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1978 Lincoln Mark V Spark Plug

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AC Delco Spark Plug
AC Delco logo AC Delco Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $1.90
(99) In Stock
Part Number: 5634-05008414
Notes: Professional Conventional -- New; Gap .050
Condition: New

Shipping Options:
Ground
Must be purchased in quantities of 4
This Part Fits: Catalog: B
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

AC Delco Spark Plug
AC Delco logo AC Delco Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $6.44
(99) In Stock
Part Number: 5634-05006405
Notes: Professional Double Platinum -- New; Gap .050"
Condition: New

Shipping Options:
Ground
Must be purchased in quantities of 8
This Part Fits: Catalog: B
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

AC Delco Spark Plug
AC Delco logo AC Delco Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $3.74
(99) In Stock
Part Number: 5634-05005918
Notes: Professional RAPIDFIRE -- New; Gap .050"
Condition: New

Shipping Options:
Ground
Must be purchased in quantities of 4
This Part Fits: Catalog: B
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

NGK Spark Plug
NGK logo NGK Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $2.73
(61) In Stock
Part Number: 5634-05292008
Notes: G-Power Spark Plug -- Gap 0.050"
Features:
  • NGK G-Power Platinum spark plugs are an economical upgrade option from traditional spark plugs. Fine wire platinum center electrode provides excellent performance and fuel efficiency.
Condition: New

Core Copper Core
Tip Platinum

Shipping Options:
Ground
This Part Fits: Catalog: B
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

NGK Spark Plug
NGK logo
NGK Spark Plug
Click to Enlarge
(Read reviews)
Our List Price: $6.28
(8) In Stock
Part Number: 5634-03344076
Notes: Iridium IX Spark Plug -- Gap 0.050"
Features:
  • NGK Iridium IX spark plugs are designed specifically for the performance enthusiast. Iridium IX spark plugs offer extreme ignitibility, improved throttle response and superior anti-fouling.
Condition: New

Core Copper Core
Tip Iridium

Shipping Options:
Ground
This Part Fits: Catalog: F
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

NGK Spark Plug
NGK logo NGK Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $1.75
(99) In Stock
Part Number: 5634-05174473
Notes: V-Power Spark Plug -- Gap 0.050"
Features:
  • Original equipment manufacturer approved and an excellent upgrade from standard spark plugs, NGK V-Power spark plugs feature a special V-Groove center electrode and concave ground electrode to increase ignitibility.
Condition: New

Core Copper Core
Tip Nickel with V-Groove

Shipping Options:
Ground
This Part Fits: Catalog: B
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

E3 Spark Plugs Spark Plug
E3 Spark Plugs logo E3 Spark Plugs Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $6.11
(41) In Stock
Part Number: 5634-05343289
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 Part Fits: Catalog: B
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

Motorcraft Spark Plug
Motorcraft logo Motorcraft Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $1.86
(99) In Stock
Part Number: 5634-05778031
Notes: Spark Plug -- Gap: .050; Type - Standard Service Plug; -425
Condition: New

Shipping Options:
Ground
This Part Fits: Catalog: B
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

Denso Spark Plug
Denso logo Denso Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $5.33
(96) In Stock
Part Number: 5634-05169633
Notes: Iridium Power -- Gap 0.044; 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

Ground Electrode Tip Design Tapercut, U-Groove
Ground Electrode Core Material Nickel
Electrode Tip Iridium Rhodium Alloy

Shipping Options:
Ground
Must be purchased in quantities of 4
This Part Fits: Catalog: B
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

Denso Spark Plug
Denso logo Denso Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $6.09
(99) In Stock
Part Number: 5634-05445068
Notes: Iridium TT -- Gap 0.040; Iridium TT - Ultimate Endurance and Power, 0.4mm Iridium and 0.7mm Platinum Twin-Tip Technology
Condition: New

Ground Electrode Tip Design Platinum Twin-Tip
Ground Electrode Core Material Nickel
Electrode Tip Iridium Rhodium Alloy

Shipping Options:
Ground
Must be purchased in quantities of 4
This Part Fits: Catalog: B
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

Denso Spark Plug
Denso logo Denso Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $2.59
(99) In Stock
Part Number: 5634-05169543
Notes: Platinum TT -- Gap 0.040; Platinum TT - Twin-Tip Technology Design with Platinum Center Electrode and Titanium Enhanced Ground Strap
Condition: New

Ground Electrode Tip Design Titanium Enhanced Twin-Tip
Ground Electrode Core Material Nickel
Electrode Tip Platinum

Shipping Options:
Ground
Must be purchased in quantities of 4
This Part Fits: Catalog: B
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

Denso Spark Plug
Denso logo Denso Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $1.53
(99) In Stock
Part Number: 5634-05052088
Notes: U-Groove Conventional -- Gap 0.044; O.E. Recommended Resistor Plug with Patented U-Groove Design
Features:
  • T16PR-U11
  • Increases engine performance and throttle response
  • Efficient fuel consumption
  • Improved cold-starting
  • Stable combustion during idling
Condition: New

Ground Electrode Tip Design U-Groove
Ground Electrode Core Material Nickel
Electrode Tip Nickel

Shipping Options:
Ground
Must be purchased in quantities of 4
This Part Fits: Catalog: B
Vehicle Engine
1978 Lincoln Mark V 7.5L V8 

Denso Spark Plug
Denso logo Denso Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $1.53
(37) In Stock
Part Number: 5634-05052089
Notes: U-Groove Conventional -- Gap 0.060; O.E. Recommended Resistor Plug with Patented U-Groove Design
Condition: New

Ground Electrode Tip Design U-Groove
Ground Electrode Core Material Nickel
Electrode Tip Nickel

Shipping Options:
Ground
Must be purchased in quantities of 4
This Part Fits: Catalog: B
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 

Champion Spark Plug
Champion logo Champion Spark Plug Click to Enlarge
(1 Reviews)
5 Stars
Champion 18
Spark Plug
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Our List Price: $1.56
(29) In Stock
Part Number: 5634-09023460
Notes: Copper Plus -- Plug Type RV15YC4; Gap .050"; OE Type
Features:
  • Champion Copper Plus
Condition: New

Center Electrode Tip Material Nickel Copper Alloy
Thread Diameter 0.551 in
Thread Diameter 14.000 mm

Shipping Options:
Ground
This Part Fits: Catalog: H
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

Champion Spark Plug
Champion logo Champion Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $4.56
(6) In Stock
Part Number: 5634-09023565
Notes: Double Platinum Power -- Plug Type RV17PMP4; Gap .050"
Features:
  • Champion Double Platinum
Condition: New

Center Electrode Tip Material Platinum Firing Tip
Thread Diameter 0.551 in
Thread Diameter 14.000 mm

Shipping Options:
Ground
This Part Fits: Catalog: H
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

Champion Spark Plug
Champion logo Champion Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $2.14
(8) In Stock
Part Number: 5634-09023474
Notes: Platinum Power -- Plug Type RV17PMC4; Gap .050"
Features:
  • Champion Platinum Power
Condition: New

Center Electrode Tip Material Platinum Firing Tip
Thread Diameter 0.551 in
Thread Diameter 14.000 mm

Shipping Options:
Ground
This Part Fits: Catalog: H
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

Autolite Spark Plug
Autolite logo Autolite Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $1.39
(99) In Stock
Part Number: 5634-09182950
Notes: Copper Resistor Spark Plug -- .050 Gap; OE Style
Features:
  • Autolite Copper Core plugs are designed to meet or exceed OES design requirements.
Condition: New

Center Electrode Core Copper
Center Electrode Tip Material Nickel
Ground Electrode Tip Material Nickel

Shipping Options:
Ground
This Part Fits: Catalog: H
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

Autolite Spark Plug
Autolite logo Autolite Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $4.35
(45) In Stock
Part Number: 5634-09183057
Notes: Double Platinum Spark Plug -- .050 Gap
Features:
  • Autolite Double Platinum plugs feature platinum-to-platinum firing which virtually eliminates gap erosion, reduces misfires and increases durability of the plug.
Condition: New

Center Electrode Core Copper
Center Electrode Tip Material Platinum
Ground Electrode Tip Material Platinum

Shipping Options:
Ground
This Part Fits: Catalog: H
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

Autolite Spark Plug
Autolite logo
Autolite Spark Plug
Click to Enlarge
(Read reviews)
Our List Price: $4.26
(16) In Stock
Part Number: 5634-03651177
Notes: Iridium Spark Plug -- Iridium Enhanced Center Electrode. Proprietary V-trimmed Platinum side wire. 0.6mm finewire design.; .050 Gap
Features:
  • Our best spark plug! Autolite Iridium XP spark plugs feature an iridium-enhanced 0.6mm finewire design and patented platinum sidewire technology to provide better overall durability and a more focused ignition.
Condition: New

Center Electrode Core Copper
Center Electrode Tip Material Iridium
Ground Electrode Tip Material Platinum

Shipping Options:
Ground
This Part Fits: Catalog: F
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

Autolite Spark Plug
Autolite logo Autolite Spark Plug Click to Enlarge
(Read reviews)
Our List Price: $2.43
(90) In Stock
Part Number: 5634-09183019
Notes: Platinum Spark Plug -- .050 Gap
Features:
  • Autolite Platinum plugs provide a center wire platinum firing tip which provides reduced gap erosion, fewer misfires, better performance and increased durability.
Condition: New

Center Electrode Core Copper
Center Electrode Tip Material Platinum
Ground Electrode Tip Material Nickel

Shipping Options:
Ground
This Part Fits: Catalog: H
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

Accel Spark Plug
Accel logo
Accel Spark Plug
Click to Enlarge
(Read reviews)
Our List Price: $27.97
(1) In Stock
Part Number: 5634-07892540
Notes: HP Copper Spark Plug -- Stock Heat Range; 0.032 in. Gap; 5 / 8 in. Hex Size; .460 in. Reach; Resistor; Tapered Seat Type; 1.25mm Thread Pitch; 14mm Thread Size; 8 Pack Of PN [0576]; 0.044 in. Plug Gap
Features:
  • Copper Core Is A Better Conductor Than Iridium Or Platinum Plugs
  • Copper Dissipates Heat Much Better Than Other Materials
  • C-Cut Design/Un-Shrouding The Spark Kernel
  • Gapable Unlike Iridium Or Platinum
  • Machine Rolled Threads-Precise Thread Engagement
  • Stock Heat Range
  • On The Street Or Strip; Accel Hp Copper Core Spark Plugs Deliver!
Condition: New

Shipping Options:
Ground
This Part Fits: Catalog: C
Vehicle
1978 Lincoln Mark V

Accel Spark Plug
Accel logo
Accel Spark Plug
Click to Enlarge
(Read reviews)
Our List Price: $27.97
(1) In Stock
Part Number: 5634-07892540
Notes: HP Copper Spark Plug -- Stock Heat Range; 0.032 in. Gap; 5 / 8 in. Hex Size; .460 in. Reach; Resistor; Tapered Seat Type; 1.25mm Thread Pitch; 14mm Thread Size; 8 Pack Of PN [0576]; 0.050 in. Plug Gap
Features:
  • Copper Core Is A Better Conductor Than Iridium Or Platinum Plugs
  • Copper Dissipates Heat Much Better Than Other Materials
  • C-Cut Design/Un-Shrouding The Spark Kernel
  • Gapable Unlike Iridium Or Platinum
  • Machine Rolled Threads-Precise Thread Engagement
  • Stock Heat Range
  • On The Street Or Strip; Accel Hp Copper Core Spark Plugs Deliver!
Condition: New

Shipping Options:
Ground
This Part Fits: Catalog: C
Vehicle
1978 Lincoln Mark V

Accel Spark Plug
Accel logo
Accel Spark Plug
Click to Enlarge
Accel Spark Plug
Click to Enlarge
(1 Reviews)
5 Stars
Accel 8199
Spark Plug
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Our List Price: $34.54
(10) In Stock
Part Number: 5634-07803680
Notes: U-Groove Spark Plug Header Plug -- 14mm Thread; .460 in. Reach; Tapered Seat; 5 / 8 Hex; Projected Tip; Resistor; 2 Of PN [0576S-4]; 8 Pack; 0.044 in. Plug Gap
Features:
  • Shorty Spark Plugs For Tubular Exhaust Headers
  • Eliminates Dimpling Headers For Added Clearance
  • Shorter Overall Plug Length Vs. OE Style Plug
  • Copper Core Center Electrode
  • Projected Tip
  • Helps Eliminate Burned Spark Plug Boots
  • Shorty Header Spark Plug
Condition: New

Color White

Shipping Options:
Ground
This Part Fits: Catalog: C
Vehicle
1978 Lincoln Mark V

Accel Spark Plug
Accel logo
Accel Spark Plug
Click to Enlarge
Accel Spark Plug
Click to Enlarge
(1 Reviews)
5 Stars
Accel 8199
Spark Plug
Close
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Our List Price: $34.54
(10) In Stock
Part Number: 5634-07803680
Notes: U-Groove Spark Plug Header Plug -- 14mm Thread; .460 in. Reach; Tapered Seat; 5 / 8 Hex; Projected Tip; Resistor; 2 Of PN [0576S-4]; 8 Pack; 0.050 in. Plug Gap
Features:
  • Shorty Spark Plugs For Tubular Exhaust Headers
  • Eliminates Dimpling Headers For Added Clearance
  • Shorter Overall Plug Length Vs. OE Style Plug
  • Copper Core Center Electrode
  • Projected Tip
  • Helps Eliminate Burned Spark Plug Boots
  • Shorty Header Spark Plug
Condition: New

Color White

Shipping Options:
Ground
This Part Fits: Catalog: C
Vehicle
1978 Lincoln Mark V

Bosch Spark Plug
Bosch logo
Bosch Spark Plug
Click to Enlarge
(Read reviews)
Our List Price: $3.13

Out of Stock
Part Number: 5634-07350708
Notes: Nickel -- Gap 0.050 in
Features:
  • Heavy-duty yttrium enhanced nickel-copper center electrode ensures superior reliability and durability for up to 50% longer performance life vs. standard copper plugs
  • Copper core provides broader heat range to resist pre-ignition and fouling
  • Nickel-plated rolled threads provide superior resistance to corrosion and do not require anti-seize - saving time
  • Angled, ribbed insulator design prevents misfire due to flash-over
  • Metal glass fused resistor maximizes interference suppression
  • Bosch Super Plus, with a heavy-duty yttrium-enhanced copper core center electrode, is the longest lasting copper core spark plug on the market.
Condition: New

Shipping Options:
Ground
This Part Fits: Catalog: P
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

MSD Spark Plug
MSD logo
MSD Spark Plug
Click to Enlarge
(Read reviews)
Our List Price: $27.14

Out of Stock
Part Number: 5634-07500952
Notes: Iridium Tip Spark Plug -- 4 Pack; Plug Type 6IR4Y; [Available While Supplies Last]; 0.035 in. Plug Gap; Available While Supplies Last
Features:
  • Outlast Performance Plugs
  • Machined Electrode
  • Yttrium Copper Core
  • Superior Design
  • Proprietary Ceramic Formula
  • 1mm Iridium Tip
  • Unique Insulator Design
  • Improves Comprehensive Drivability And Economy
Condition: New

Hex Size 0.625 in.
Length Standard
Package Quantity 4
Projected Tip Yes
Reach 0.4375 in.
Resistor Yes
Seat Type Tapered
Style Iridium
Thread Size 14mm

Shipping Options:
Ground
This Part Fits: Catalog: C
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 

Motorcraft Spark Plug
Motorcraft logo Motorcraft Spark Plug Click to Enlarge
(1 Reviews)
4 Stars
Motorcraft SP-425
Spark Plug
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Our List Price: $1.88

Out of Stock
Part Number: 5634-05048439
Notes: Copper Resistor Spark Plug -- Gap: .050; Type - Standard Service Plug; Plug Material: Copper; -425-A
Condition: New

Shipping Options:
Ground
This Part Fits: Catalog: B
Vehicle Engine
1978 Lincoln Mark V 6.6L V8 
1978 Lincoln Mark V 7.5L V8 



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