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Audi D4 A8 4.2

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Audi D4 A8 4.2 Exhaust Emission Parts

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Oxygen Sensor Wrench 3/8" drive

ES#2949705 - SLY88750B - Oxygen Sensor Wrench 3/8" drive - O2 Sensor Socket - Schley - Audi Volkswagen Mercedes Benz MINI

O2 Sensor Socket

Brand:
Schley - Corporate Logo
ES#:
2949705
Mfg#:
SLY88750B
Ships on Aug 18, 2026
$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket - Priced Each

ES#2800427 - 8K0253115D - Exhaust Gasket - Priced Each - Seals the catalytic converter to the downpipe - Ajusa - Audi

Seals the catalytic converter to the downpipe

Brand:
Ajusa - Corporate Logo
ES#:
2800427
Mfg#:
8K0253115D
Back Ordered
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal Oxygen Sensor Bung - Priced Each

ES#5051 - ATP-FLS-022 - Universal Oxygen Sensor Bung - Priced Each - Stainless steel weld-in nut for any O2 sensor - ATP - Audi BMW Volkswagen

Stainless steel weld-in nut for any O2 sensor

Brand:
ATP - Corporate Logo
ES#:
5051
Mfg#:
ATP-FLS-022
Ships in 6 Business Days
$12.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Dual Drive Oxygen Sensor Wrench

ES#2944218 - LIS12390 - Dual Drive Oxygen Sensor Wrench - Tool comes with both 1/2" and 3/8" drive. - Lisle - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Tool comes with both 1/2" and 3/8" drive.

Brand:
Lisle - Corporate Logo
ES#:
2944218
Mfg#:
LIS12390
Ships in 6 Business Days
$59.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Offset Oxygen Sensor Wrench- Extended

ES#4001169 - CTA2065 - Offset Oxygen Sensor Wrench- Extended - Extra length is needed sometimes - CTA Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Extra length is needed sometimes

Brand:
CTA Tools - Corporate Logo
ES#:
4001169
Mfg#:
CTA2065
Back Ordered
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket - Priced Each

ES#3448169 - 8K0253115K - Exhaust Gasket - Priced Each - Seals the catalytic converter to the downpipe - Meistersatz - Audi

Seals the catalytic converter to the downpipe

Brand:
Meistersatz - Corporate Logo
ES#:
3448169
Mfg#:
8K0253115K
Ships in 3 Business Days
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Gasket - Priced Each

ES#3690472 - 8K0253115K - Exhaust Gasket - Priced Each - Seals the catalytic converter to the downpipe - Elring - Audi

Seals the catalytic converter to the downpipe 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
3690472
Mfg#:
8K0253115K
In Stock at Vendor
$7.99

This product was last offered at the strikethrough price on
04-20-2026

$5.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Combi Valve / EGR Valve - Priced Each

Fits left and right side

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2955064
Mfg#:
079131101AN
Ships in 1-2 days
9% off MSRP

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$551.99

This product was last offered at the strikethrough price on
08-01-2026

$504.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Exhaust Emission Parts

Oxygen sensors, catalytic converters, and other critical emissions components not only cause Check Engine Lights when they fail, but they'll also keep you from registering your car. Make sure your emissions system is functioning properly so you can continue to drive your car legally.

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Manufacturer names and/or part numbers are used only for identification purposes.

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