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2006 Cadillac STS Spark Plug

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AC Delco Spark Plug
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Sale Price: $3.73
(>35) In Stock
Part Number: 18643-09006511
Notes: Professional Conventional -- Gap .050
Condition: New

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Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

AC Delco Spark Plug
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Sale Price: $8.08
(>35) In Stock
Part Number: 18643-05006398
Notes: Professional Double Platinum -- Gap .040
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.4L V8 

AC Delco Spark Plug
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AC Delco 41-950
Spark Plug
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Sale Price: $8.08
(>35) In Stock
Part Number: 18643-05006416
Notes: Professional Double Platinum -- Gap .050
Condition: New

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Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

AC Delco Spark Plug
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Sale Price: $8.08
(>35) In Stock
Part Number: 18643-05006424
Notes: Professional Double Platinum -- Original Equipment
Condition: New

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Vehicle Sub Model Engine
• 2006 Cadillac STS AWD  3.6L V6 VIN: 7 
• 2006 Cadillac STS RWD  3.6L V6 VIN: 7 

AC Delco Spark Plug
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Sale Price: $8.08
(>35) In Stock
Part Number: 18643-05006421
Notes: Professional Double Platinum -- Original Equipment; Gap .040
Condition: New

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Vehicle Sub Model Engine
• 2006 Cadillac STS AWD  4.6L V8 VIN: A 
• 2006 Cadillac STS RWD  4.6L V8 VIN: A 

AC Delco Spark Plug
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Sale Price: $9.73
(8) In Stock
Part Number: 18643-09006478
Notes: Professional Double Platinum -- Original Equipment; Gap .040
Condition: New

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Vehicle Sub Model Engine
• 2006 Cadillac STS RWD  4.4L V8 VIN: D 

AC Delco Spark Plug
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Sale Price: $8.08
(>35) In Stock
Part Number: 18643-05006423
Notes: Professional Iridium -- Gap .044
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 3.6L V6 

AC Delco Spark Plug
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Retail Price:
$10.52
Sale Price: $9.48
(4) In Stock
Part Number: W0133-2102458
Notes: Professional Platinum - Platinum
Condition: New

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Vehicle Engine
• 2006 Cadillac STS 3.6L V6 

AC Delco Spark Plug
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Retail Price:
$10.06
Sale Price: $8.48
(6) In Stock
Part Number: W0133-1866247
Notes: Professional Platinum - Platinum
Condition: New

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Vehicle Engine
• 2006 Cadillac STS 3.6L V6 

AC Delco Spark Plug
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Sale Price: $6.08
(>35) In Stock
Part Number: 18643-05448231
Notes: Professional Rapidfire -- Gap .040
Condition: New

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Vehicle Engine
• 2006 Cadillac STS 4.4L V8 

AC Delco Spark Plug
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Sale Price: $6.08
(>35) In Stock
Part Number: 18643-05448247
Notes: Professional Rapidfire -- Gap .044
Condition: New

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Vehicle Engine
• 2006 Cadillac STS 3.6L V6 

AC Delco Spark Plug
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Sale Price: $6.08
(>35) In Stock
Part Number: 18643-05448231
Notes: Professional Rapidfire -- Gap .050
Condition: New

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Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

Bosch Spark Plug
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Retail Price:
$10.52
Sale Price: $9.48
(13) In Stock
Part Number: W0133-1941840
Notes: OE Fine Wire Iridium
Detailed Notes: Do not gap; Gap is pre-set
Features:
  • OE design for optimum fit and function
  • Center electrode is an ultra fine wire design.
  • Provides broader heat range to resist pre-ignition and fouling
  • Delivers exceptional ignitability and performance
  • Tapered shape ground electrode
  • Laser welded iridium-platinum alloy inlay
  • Nickel-plated shell with rolled threads
  • Anti-seize and corrosion protection
Condition: New

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This Product Fits the Following: Warehouse: A
Vehicle Engine
• 2006 Cadillac STS 3.6L V6 

Bosch Spark Plug
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Bosch 9617
Spark Plug
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Sale Price: $7.73
(>35) In Stock
Part Number: 18643-09119549
Notes: OE Fine Wire Iridium -- Do Not Gap, Gap is Preset
Condition: New

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Vehicle Engine
• 2006 Cadillac STS 3.6L V6 

Bosch Spark Plug
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Bosch 9606
Spark Plug
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Sale Price: $7.73
(>35) In Stock
Part Number: 18643-09021090
Notes: OE Fine Wire Iridium -- Do Not Gap, Gap is Preset
Condition: New

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Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

Bosch Spark Plug
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Retail Price:
$10.52
Sale Price: $9.48
(18) In Stock
Part Number: W0133-1933511
Notes: OE Finewire Iridium
Detailed Notes: Do not gap; Gap is pre-set
Features:
  • OE design for optimum fit and function
  • Center electrode is an ultra fine wire design.
  • Provides broader heat range to resist pre-ignition and fouling
  • Delivers exceptional ignitability and performance
  • Tapered shape ground electrode
  • Laser welded iridium-platinum alloy inlay
  • Nickel-plated shell with rolled threads
  • Anti-seize and corrosion protection
Condition: New

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This Product Fits the Following: Warehouse: A
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

Bosch Spark Plug
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Sale Price: $11.08
(>35) In Stock
Part Number: 18643-05351429
Notes: OE/Specialty -- Do Not Gap, Gap is Preset
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 3.6L V6 

Bosch Spark Plug
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Sale Price: $3.08
(1) In Stock
Part Number: 18643-05215667
Notes: PLATINUM
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 VIN: A 

Bosch Spark Plug
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Sale Price: $9.08
(5) In Stock
Part Number: 18643-05021012
Notes: Platinum Ir Fusion -- Do Not Gap, Gap is Preset; Original Equipment Is Platinum
Features:
  • Patented fused iridium and platinum center electrode, sintered into an extended insulator nose, provides exceptional wear resistance and reaches
  • Revolutionary surface air gap firing technology featuring Bosch's unique four ground electrode design, delivers the most powerful spark for the most efficient combustion and optimum horsepower without increasing the voltage requirement
  • Four yttrium-enhanced ground electrodes resist spark plug wear and oxidation for exceptional performance life
  • Factory pre-set gap set to provide ease of installation - never requires adjustment
  • Contains one spark plug
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

Bosch Spark Plug
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Sale Price: $4.73
(2) In Stock
Part Number: 18643-09020454
Notes: Platinum Plus -- Gap 0.040 in; Original Equipment Is Platinum
Features:
  • Exclusive platinum technology in the center electrode for quicker starts, smoother acceleration and increased fuel efficiency
  • Tapered, yttrium enhanced v-profile ground electrode provides a 25% longer performance life
  • Lower ignition voltage requirement provides reliable cold weather starting and superior operation under all driving conditions
  • Factory-set gap once the proper gap is set, there's no need to re-gap
  • Contains one spark plug
Condition: New

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Vehicle Engine
• 2006 Cadillac STS 4.6L V8 VIN: A 

Bosch Spark Plug
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Sale Price: $6.08
(8) In Stock
Part Number: 18643-05527784
Notes: Platinum+2 -- Do Not Gap, Gap is Preset; Original Equipment Is Platinum
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

Bosch Spark Plug
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Bosch 4458
Spark Plug
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Sale Price: $6.08
(>35) In Stock
Part Number: 18643-05021003
Notes: Platinum+4 -- Do Not Gap, Gap is Preset; Original Equipment Is Platinum
Features:
  • Revolutionary surface air gap firing technology featuring four yttrium-enhanced ground electrodes delivers the longest, most powerful spark for ultimate engine performance
  • Four yttrium-enhanced ground electrodes provide optimum access to the air/fuel mixture for the most efficient combustion, plus the yttrium alloy ground electrodes reduce gap wear and oxidation for extended performance life
  • Electrode gap is factory set to provide ease of installation - never requires adjustment
  • Never requires gapping,the electrode gap is factory-set and never requires adjustment
  • Provides ease of installation - never requires adjustment
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

Bosch Spark Plug
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Sale Price: $3.08
(>35) In Stock
Part Number: 18643-05212362
Notes: Super Plus -- Gap 0.040 in; Original Equipment Is Platinum
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

Denso Spark Plug
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Sale Price: $7.08
(>35) In Stock
Part Number: 18643-05052102
Notes: Double Platinum -- DENSO is O.E. Manufacturer / O.E. Recommended Double Platinum Plug - Extra Long Life Double Platinum Plug with Platinum Ground Strap
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 VIN: A FI Naturally Aspirated GAS 

Denso Spark Plug
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Denso 5068
Spark Plug
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Sale Price: $7.08
(>35) In Stock
Part Number: 18643-05052098
Notes: Double Platinum -- O.E. Recommended Double Platinum Plug - Extra Long Life Double Platinum Plug with Platinum Ground Strap
Features:
  • PT16VR13
  • Increases engine performance and throttle response
  • Efficient fuel consumption
  • Improved cold-starting
  • Stable combustion during idling
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 3.6L V6 VIN: 7 FI Naturally Aspirated GAS 

Denso Spark Plug
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Denso 5325
Spark Plug
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Sale Price: $8.08
(>35) In Stock
Part Number: 18643-05169630
Notes: Iridium Power -- Iridium Power - Performance Upgrade with World's Smallest Center Electrode (0.4 mm Dia.) & Tapered Tip Patented U-Groove Design & Patented Iridium Alloy (90% Iridium)
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 VIN: A FI Naturally Aspirated GAS 

Denso Spark Plug
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Denso 5338
Spark Plug
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Sale Price: $8.08
(>35) In Stock
Part Number: 18643-05052108
Notes: Iridium Power -- Iridium Power - Performance Upgrade with World's Smallest Center Electrode (0.4 mm Dia.) & Tapered Tip Patented U-Groove Design & Patented Iridium Alloy (90% Iridium)
Features:
  • Low fuel consumption
  • Excellent acceleration and performance
  • Stable combustion during idling
  • Long life and high reliability
  • Features iridium with high melting point
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 3.6L V6 VIN: 7 FI Naturally Aspirated GAS 

Denso Spark Plug
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Sale Price: $8.08
(>35) In Stock
Part Number: 18643-05169632
Notes: Iridium Power -- Iridium Power - Performance Upgrade with World's Smallest Center Electrode (0.4 mm Dia.) & Tapered Tip Patented U-Groove Design & Patented Iridium Alloy (90% Iridium)
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Sub Model Engine
• 2006 Cadillac STS 4.4L V8 VIN: D FI Supercharged GAS 

Denso Spark Plug
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Sale Price: $8.08
(>35) In Stock
Part Number: 18643-05445079
Notes: Iridium TT -- Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 3.6L V6 VIN: 7 FI Naturally Aspirated GAS 

Denso Spark Plug
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Sale Price: $8.08
(>35) In Stock
Part Number: 18643-05445066
Notes: Iridium TT -- Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 VIN: A FI Naturally Aspirated GAS 

Denso Spark Plug
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Denso 4511
Spark Plug
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Sale Price: $4.08
(>35) In Stock
Part Number: 18643-05169545
Notes: Platinum TT -- Platinum TT Plug - Twin-Tip Technology Design with Platinum Center Electrode and Titanium Enhanced Ground Strap
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 VIN: A FI Naturally Aspirated GAS 

Denso Spark Plug
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Sale Price: $4.08
(>35) In Stock
Part Number: 18643-05169547
Notes: Platinum TT -- Platinum TT Plug - Twin-Tip Technology Design with Platinum Center Electrode and Titanium Enhanced Ground Strap
Condition: New

Shipping Options:
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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 3.6L V6 VIN: 7 FI Naturally Aspirated GAS 

Denso Spark Plug
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Sale Price: $3.08
(>35) In Stock
Part Number: 18643-05052085
Notes: STD -- Resistor Plug with Patented U-Groove Design
Features:
  • T16EPR-U
  • Increases engine performance and throttle response
  • Efficient fuel consumption
  • Improved cold-starting
  • Stable combustion during idling
Condition: New

Shipping Options:
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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 VIN: A FI Naturally Aspirated GAS 

Denso Spark Plug
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Retail Price:
$10.06
Sale Price: $8.48
(8) In Stock
Part Number: W0133-1832660
Notes: w/ Platinum Design
Product Remark: PT16EPR10 ND
Features:
  • Platinum center electrode
  • Platinum ground electrode
  • Premium shell construction with machine-rolled threads
  • Sustained spark performance over 60,000 miles
  • Reduced secondary required voltage, increased ignition efficiency DENSO engineering studies show that Double Platinum plugs can run longer with reduced erosion, minimizing spark gap growth throughout the life of the plug.
Condition: New

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OEM
This Product Fits the Following: Warehouse: A
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

NGK Spark Plug
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Retail Price:
$22.24
Sale Price: $11.48
(2) In Stock
Part Number: W0133-1829024
Notes: Laser Iridium - Platinum
Product Remark: ILTR6B11 NGK
Condition: New

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This Product Fits the Following: Warehouse: A
Vehicle Engine
• 2006 Cadillac STS 3.6L V6 

Champion Spark Plug
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Sale Price: $7.08
(8) In Stock
Part Number: 18643-05277474
Notes: Champion Iridium -- Plug Type RE10WYPB5; Gap .044
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 3.6L V6 

Champion Spark Plug
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Sale Price: $7.08
(26) In Stock
Part Number: 18643-05267367
Notes: Champion Iridium -- Plug Type RS12WYPB4; Gap .040
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

Champion Spark Plug
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Sale Price: $7.08
(1) In Stock
Part Number: 18643-05398303
Notes: Champion Iridium -- Plug Type RS8WYPB5; Gap .040
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.4L V8 

Champion Spark Plug
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Sale Price: $3.08
(>35) In Stock
Part Number: 18643-05027492
Notes: Copper Plus -- Plug Type RS12YC; Gap .040
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

Champion Spark Plug
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Champion 304
Spark Plug
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Sale Price: $3.08
(>35) In Stock
Part Number: 18643-05027466
Notes: Copper Plus -- Plug Type RS9YC; Gap .040
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.4L V8 

Champion Spark Plug
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Champion 7963
Spark Plug
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Sale Price: $7.08
(>35) In Stock
Part Number: 18643-05027551
Notes: Double Platinum Power -- Plug Type RS12PYPB5; Gap .040
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

Champion Spark Plug
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Sale Price: $7.08
(17) In Stock
Part Number: 18643-05529287
Notes: Double Platinum Power -- Plug Type RS9PYP4; Gap .040; OE Type
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.4L V8 

Champion Spark Plug
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Sale Price: $4.08
(>35) In Stock
Part Number: 18643-05027464
Notes: Platinum Power -- Plug Type RE10PMC5; Gap .044
Condition: New

Shipping Options:
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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 3.6L V6 

Champion Spark Plug
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Champion 3401
Spark Plug
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Sale Price: $4.08
(>35) In Stock
Part Number: 18643-05027479
Notes: Platinum Power -- Plug Type RS10PYC4; Gap .040
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

E3 Spark Plugs Spark Plug
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E3 Spark Plugs E3.54
Spark Plug
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Sale Price: $7.08
(>35) In Stock
Part Number: 18643-05343295
Notes: Spark Plug
Features:
  • More Horsepower
  • Improved Fuel Efficiency
  • Reduced Engine Emissions
  • Longer Engine Life
  • Better Conductive Heat Transfer
  • Easier starts in all weather conditions
Condition: New

Shipping Options:
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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

E3 Spark Plugs Spark Plug
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E3 Spark Plugs E3.53
Spark Plug
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Sale Price: $7.08
(>35) In Stock
Part Number: 18643-05343294
Notes: Spark Plug
Features:
  • More Horsepower
  • Improved Fuel Efficiency
  • Reduced Engine Emissions
  • Longer Engine Life
  • Better Conductive Heat Transfer
  • Easier starts in all weather conditions
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.4L V8 

E3 Spark Plugs Spark Plug
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Sale Price: $7.08
(>35) In Stock
Part Number: 18643-05572952
Notes: Spark Plug
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 3.6L V6 

Motorcraft Spark Plug
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Sale Price: $3.08
(>35) In Stock
Part Number: 18643-05156384
Notes: Spark Plug -- Plug Material: Copper; Gap: .050; Type - Alternative Plg
Condition: New

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This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

NGK Spark Plug
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Sale Price: $4.73
(>35) In Stock
Part Number: 18643-09083083
Notes: G-Power Spark Plug -- Gap 0.040"
Condition: New

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This Product Fits the Following: Warehouse: H
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

NGK Spark Plug
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Sale Price: $9.73
(>35) In Stock
Part Number: 18643-09083490
Notes: Iridium IX Spark Plug -- Gap 0.040"
Condition: New

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This Product Fits the Following: Warehouse: H
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

NGK Spark Plug
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Sale Price: $9.73
(>35) In Stock
Part Number: 18643-09083123
Notes: Iridium IX Spark Plug -- Gap 0.040"
Condition: New

Shipping Options:
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This Product Fits the Following: Warehouse: H
Vehicle Engine
• 2006 Cadillac STS 4.4L V8 

NGK Spark Plug
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NGK 6509
Spark Plug
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Sale Price: $9.73
(>35) In Stock
Part Number: 18643-09083415
Notes: Iridium IX Spark Plug -- Gap 0.044"
Condition: New

Shipping Options:
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This Product Fits the Following: Warehouse: H
Vehicle Engine
• 2006 Cadillac STS 3.6L V6 

NGK Spark Plug
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Sale Price: $10.73
(17) In Stock
Part Number: 18643-09134943
Notes: Laser Iridium Spark Plug -- Gap 0.044"
Condition: New

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This Product Fits the Following: Warehouse: H
Vehicle Engine
• 2006 Cadillac STS 3.6L V6 

NGK Spark Plug
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NGK 3784
Spark Plug
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Sale Price: $10.73
(24) In Stock
Part Number: 18643-09083131
Notes: Laser Platinum Spark Plug -- Gap 0.040"
Condition: New

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Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

MSD Spark Plug - Iridium Tip Spark Plug - 4 Pack - Plug Type 1IR5Y - [Available While Supplies Last];0.043 in. Plug Gap

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Sale Price: $35.96
(9) In Stock
Part Number: 18643-03287538
Notes: Iridium Tip Spark Plug; 4 Pack; Plug Type 1IR5Y; [Available While Supplies Last];0.043 in. Plug Gap
Condition: New

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This Product Fits the Following: Warehouse: F
Vehicle Sub Model Engine
• 2006 Cadillac STS Base  4.6L V8 

MSD Spark Plug - Iridium Tip Spark Plug - 4 Pack - Plug Type 5IR6Y - [Available While Supplies Last];0.032 in. Plug Gap

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Sale Price: $35.96
(10) In Stock
Part Number: 18643-03287592
Notes: Iridium Tip Spark Plug; 4 Pack; Plug Type 5IR6Y; [Available While Supplies Last];0.032 in. Plug Gap
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: F
Vehicle Sub Model Engine
• 2006 Cadillac STS Base  3.6L V6 

NGK Spark Plug

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Sale Price: $3.98
(>15) In Stock
Part Number: 18643-03343874
Notes: V-Power Spark Plug -- .040
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: F
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 

Bosch Spark Plug
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(Read reviews)
Sale Price: $3.08

Out of Stock
Part Number: 18643-05244457
Notes: SUPER
Condition: New

Shipping Options:
Ground
This Product Fits the Following: Warehouse: B
Vehicle Engine
• 2006 Cadillac STS 4.6L V8 VIN: A 

4.8 stars - (29 Reviews)
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