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Lexus GS400 Replacement Oxygen Sensor Information


One of the many sensors used by the engine control module (ECU), the name given to the central computer responsible for monitoring the performance of your Lexus GS400, is the oxygen sensor. Your car has four of these oxygen sensors fitted into the exhaust system, two before and two after the catalytic converters. The ones in front, called upstream, measure the amount of O2 in the exhaust coming out of the exhaust manifolds. The ones behind the cat converters, called downstream, measure the amount of O2 in the exhaust after it has passed through these converters. Upstream units tell the computer how well the air/fuel mixture is being utilized. Downstream units tell the ECU how efficiently the catalytic converters are working. Faulty O2 sensors will trigger the check engine light and show a diagnostic code for exactly which unit needs to be replaced. Only high-quality replacement sensors should be used.


They are available for the following Lexus GS400 years: 2000, 1999, 1998, 00, 99, 98. This part is also sometimes called Lexus GS400 O2 Sensor. We stock oxygen sensor parts for most Lexus models including GS300, IS300, ES300, LS400, RX300, LX470, LS430, SC300, SC400, SC430, GX470, LX450, RX330, GS430, ES350, RX350, ES330, IS250, IS350, GS350, IS F, RX450h, LS460, RX400h, ES250, LX570, GS450h, GX460, GS460, HS250h and LS600h.

We stock these Oxygen Sensor brands for the Lexus GS400: Denso, Walker Products Inc., Bosch, Acera, Standard Motor Products and Walker.



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Denso 234-4623
Oxygen Sensor
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Sale Price: $56.63
(19) In Stock
Product SKU: 234-4623
Product Note: OE Style
Features:
  • Designed to detect the amount of oxygen in the exhaust system
  • Constructed from high quality material
  • Features double protection layer, aluminum oxide trap layer, PTFE filter and stainless steel housing
  • Manufactured with precision to meet OE standards
  • Easy installation
Position of Product: Downstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground

Additional Fitment Information: Warehouse: C
Vehicle Engine
• 1999 (99) Lexus GS400 4.0L V8 


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Denso 234-4169
Oxygen Sensor
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Sale Price: $43.63
(>35) In Stock
Product SKU: 234-4169
Product Note: OE Style
Features:
  • Designed to detect the amount of oxygen in the exhaust system
  • Constructed from high quality material
  • Features double protection layer, aluminum oxide trap layer, PTFE filter and stainless steel housing
  • Manufactured with precision to meet OE standards
  • Easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground

Additional Fitment Information: Warehouse: C
Vehicle Engine
• 1998 (98) Lexus GS400 4.0L V8 


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Denso 234-4169
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $43.63
(>35) In Stock
Product SKU: 234-4169
Product Note: OE Style
Features:
  • Designed to detect the amount of oxygen in the exhaust system
  • Constructed from high quality material
  • Features double protection layer, aluminum oxide trap layer, PTFE filter and stainless steel housing
  • Manufactured with precision to meet OE standards
  • Easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground

Additional Fitment Information: Warehouse: C
Vehicle Engine
• 1999 (99) Lexus GS400 4.0L V8 


Click to Enlarge

Denso 234-4623
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $56.63
(19) In Stock
Product SKU: 234-4623
Product Note: OE Style
Features:
  • Designed to detect the amount of oxygen in the exhaust system
  • Constructed from high quality material
  • Features double protection layer, aluminum oxide trap layer, PTFE filter and stainless steel housing
  • Manufactured with precision to meet OE standards
  • Easy installation
Position of Product: Downstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground

Additional Fitment Information: Warehouse: C
Vehicle Engine
• 1998 (98) Lexus GS400 4.0L V8 


Click to Enlarge

Denso 234-4169
Oxygen Sensor
Close
Loading Reviews...
Sale Price: $43.63
(>35) In Stock
Product SKU: 234-4169
Product Note: OE Style
Features:
  • Designed to detect the amount of oxygen in the exhaust system
  • Constructed from high quality material
  • Features double protection layer, aluminum oxide trap layer, PTFE filter and stainless steel housing
  • Manufactured with precision to meet OE standards
  • Easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground

Additional Fitment Information: Warehouse: C
Vehicle Engine
• 2000 (00) Lexus GS400 4.0L V8 


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(Read reviews)
Retail Price:
$251.62
Sale Price: $68.23
(1) In Stock
Product SKU: W0133-1896446
Product Note: OE Connector
Position of Product: Downstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground, Overnight, 2 Day

Additional Fitment Information: Warehouse: A
Vehicle
• 1999 (99) Lexus GS400


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Walker Products Inc. W0133-1894316
Oxygen Sensor
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Retail Price:
$168.55
Sale Price: $62.23
(2) In Stock
Product SKU: W0133-1894316
Product Note: OE Connector
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground, Overnight, 2 Day

Additional Fitment Information: Warehouse: A
Vehicle
• 1999 (99) Lexus GS400


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Denso 234-4209
Oxygen Sensor
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Sale Price: $34.63
(>35) In Stock
Product SKU: 234-4209
Product Note: Universal
Features:
  • Manufactured to the highest O.E. quality, guaranteed to fit right
  • Aluminum oxide trap, this extra layer helps to protect from silicone and lead poisoning
  • Stainless steel housing and porous Teflon filter all contribute to make a long life
  • Improved engine performance and greater fuel efficiency
  • Prevents premature sensor failure
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground

Additional Fitment Information: Warehouse: C
Vehicle Engine
• 1998 (98) Lexus GS400 4.0L V8 


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Bosch 15733
Oxygen Sensor
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Sale Price: $37.63
(>35) In Stock
Product SKU: 15733
Product Note: Universal Oxygen Sensor
Features:
  • Revolutionary patented submersible connection system protects against water and contamination and withstands the effects of extreme temperature and engine vibration
  • Special heat-resistant Posi-Lock connectors ensure easy installation
  • User-friendly instructions eliminate the need to call a hotline for assistance
  • Coated threads for easy installation
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground

Additional Fitment Information: Warehouse: C
Vehicle Engine
• 2000 (00) Lexus GS400 4.0L V8 


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Bosch 13441
Oxygen Sensor
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Sale Price: $41.63
(>35) In Stock
Product SKU: 13441
Product Note: Oxygen Sensor
Features:
  • Designed to determine the oxygen content of the exhaust gas
  • Improves fuel economy and lowers emission
  • Includes three OE heated wires
  • Advanced ceramic technology for consistent performance and long life
  • Features a Platinum Power-Grid that produces a precise voltage signal for the engine ECU
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground

Additional Fitment Information: Warehouse: C
Vehicle Engine
• 1999 (99) Lexus GS400 4.0L V8 


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(Read reviews)
Retail Price:
$168.55
Sale Price: $71.23
(1) In Stock
Product SKU: W0133-1607800
Product Note: OE Connector - Production: 08/01/1997-
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground, Overnight, 2 Day

Additional Fitment Information: Warehouse: A
Vehicle Production Range
• 1998 (98) Lexus GS400 Fr:08-01-97 


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(Read reviews)
Retail Price:
$168.55
Sale Price: $49.23
(1) In Stock
Product SKU: W0133-1969674
Product Note: OE Connector - Production: -06/30/2000
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground, Overnight, 2 Day

Additional Fitment Information: Warehouse: A
Vehicle Production Range
• 2000 (00) Lexus GS400 To:06-30-00 


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(Read reviews)
Sale Price: $76.63
(3) In Stock
Product SKU: SG358
Product Note: Oxygen Sensor
Position of Product: Downstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground

Additional Fitment Information: Warehouse: C
Vehicle
• 2000 (00) Lexus GS400


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(Read reviews)
Sale Price: $72.23
(25) In Stock
Product SKU: 250-24623
Product Note: Walker
Position of Product: Downstream Left
Inventory: In Stock
Condition: New

Shipping Options:
Ground

Additional Fitment Information: Warehouse: B
Vehicle Engine
• 2000 (00) Lexus GS400 4.0L V8 1UZFE FI Naturally Aspirated GAS 


Click to Enlarge

(Read reviews)
Retail Price:
$168.55
Sale Price: $49.23
(1) In Stock
Product SKU: W0133-1969674
Product Note: OE Connector
Position of Product: Upstream
Inventory: In Stock
Condition: New

Shipping Options:
Ground, Overnight, 2 Day

Additional Fitment Information: Warehouse: A
Vehicle
• 1999 (99) Lexus GS400


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Some of our Customer Reviews
Very Satisfied
Reviewer: satheeshkedari

10/28/08 05:58 PM

This parts are good and Quick delivery.

Order Date | 10/20/08

Very Satisfied
Reviewer: elcid01

11/6/10 04:58 PM

item as described. very prompt shipment. very good job. thank you.

Order Date | 10/30/10





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