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Audi C7 S6 Quattro 4.0T Oxygen Sensors & Replacement Parts

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7/8"(22mm) Flexible Oxygen Sensor Wrench

ES#240942 - FO-78 - 7/8"(22mm) Flexible Oxygen Sensor Wrench - The proper tool to remove difficult-to-reach oxygen sensors - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

The proper tool to remove difficult-to-reach oxygen sensors affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
240942
Mfg#:
FO-78
Ships on Jun 23, 2026
Auto Notify
ON SALE! SAVE 30%
$48.99

This product was last offered at the strikethrough price on
05-02-2026

$34.29 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal 4-Wire Oxygen Sensor - Priced Each

ES#2532224 - 15733 - Universal 4-Wire Oxygen Sensor - Priced Each - Four wire universal OBD-II Oxygen sensor - Bosch - Audi BMW Volkswagen

Four wire universal OBD-II Oxygen sensor affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
2532224
Mfg#:
15733
In Stock
$82.99

This product was last offered at the strikethrough price on
02-16-2026

$74.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor Tool - Angled Handle - 7/8" - Bavarian Autosport

ES#3673911 - B8800066 - Oxygen Sensor Tool - Angled Handle - 7/8" - Bavarian Autosport - Slotted, pivoting head has both hexagon and double hexagon drive. Angled handle reaches around obstructions. - Bav Auto Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

Slotted, pivoting head has both hexagon and double hexagon drive. Angled handle reaches around obstructions. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bav Auto Tools - Corporate Logo
ES#:
3673911
Mfg#:
B8800066
In Stock
ON SALE! SAVE 25%
$49.99

This product was last offered at the strikethrough price on
05-02-2026

$37.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor Tool - 22mm

ES#3673912 - B8800067 - Oxygen Sensor Tool - 22mm - 1/2" Drive - 7/8" x 6" - Extra Long - Bav Auto Tools - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

1/2" Drive - 7/8" x 6" - Extra Long affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bav Auto Tools - Corporate Logo
ES#:
3673912
Mfg#:
B8800067
Ships on Aug 10, 2026
Auto Notify
ON SALE! SAVE 20%
$29.99

This product was last offered at the strikethrough price on
05-02-2026

$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#4818209 - 4H0906262L - Oxygen Sensor - Priced Each - Rear Right - Downstream - Bosch - Audi

Rear Right - Downstream affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
4818209
Mfg#:
4H0906262L
In Stock
$153.99

This product was last offered at the strikethrough price on
01-12-2026

$145.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Oxygen Sensor - Priced Each

ES#3420004 - 4H0906262H - Front Oxygen Sensor - Priced Each - Keep your engine running efficiently - Bosch - Audi

Keep your engine running efficiently affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Fits left side

Brand:
Bosch - Corporate Logo
ES#:
3420004
Mfg#:
4H0906262H
In Stock at Vendor
$102.34 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

Rear Left - Downstream affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
4818210
Mfg#:
4H0906262M
In Stock at Vendor
$181.99

This product was last offered at the strikethrough price on
04-10-2026

$166.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#4818207 - 4H0906262P - Oxygen Sensor - Priced Each - Front Right - Upstream - Bosch - Audi

Front Right - Upstream affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
4818207
Mfg#:
4H0906262P
In Stock at Vendor
$161.99

This product was last offered at the strikethrough price on
04-10-2026

$153.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#3420002 - 4H0906265B - Oxygen Sensor - Priced Each - Located behind the catalytic converter - Bosch - Audi

Located behind the catalytic converter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Fits right side

Brand:
Bosch - Corporate Logo
ES#:
3420002
Mfg#:
4H0906265B
In Stock at Vendor
$151.99

This product was last offered at the strikethrough price on
05-07-2026

$146.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#3496678 - 4H0906262M - Oxygen Sensor - Priced Each - Located behind the catalytic converter - Genuine Volkswagen Audi - Audi

Located behind the catalytic converter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bank 2 (left side turbo) rear position

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3496678
Mfg#:
4H0906262M
Ships in 1 day
8% off MSRP

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

$330.00

This product was last offered at the strikethrough price on
02-26-2026

$301.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#3496677 - 4H0906262L - Oxygen Sensor - Priced Each - Located behind the catalytic converter - Genuine Volkswagen Audi - Audi

Located behind the catalytic converter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Bank 1 (right side turbo) rear position

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3496677
Mfg#:
4H0906262L
Ships in 1 day
8% off MSRP

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

$320.00

This product was last offered at the strikethrough price on
02-26-2026

$292.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#3420003 - 4H0906265C - Oxygen Sensor - Priced Each - Located behind the catalytic converter - Bosch - Audi

Located behind the catalytic converter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!
Fits left side

Brand:
Bosch - Corporate Logo
ES#:
3420003
Mfg#:
4H0906265C
In Stock
Limited Qty Sale
$128.99

This product was last offered at the strikethrough price on
05-02-2026

$109.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Front Oxygen Sensor - Priced Each

ES#3708336 - 4H0906262N - Front Oxygen Sensor - Priced Each - Keep your engine running efficiently - Genuine Volkswagen Audi - Audi

Keep your engine running efficiently affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits left side

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3708336
Mfg#:
4H0906262N
Ships in 2 Business 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.

$610.99

This product was last offered at the strikethrough price on
02-26-2026

$558.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Front Oxygen Sensor - Priced Each

ES#3708337 - 4H0906262P - Front Oxygen Sensor - Priced Each - Keep your engine running efficiently - Genuine Volkswagen Audi - Audi

Keep your engine running efficiently affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits right side

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3708337
Mfg#:
4H0906262P
Ships in 1 day
8% off MSRP

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

$606.99

This product was last offered at the strikethrough price on
02-26-2026

$555.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Innovate LC-2 Wideband O2 Controller Kit

ES#4809696 - 38770 - Innovate LC-2 Wideband O2 Controller Kit - Includes Lambda cable & 8-foot sensor cable. - Innovate Motorsports - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Includes Lambda cable & 8-foot sensor cable. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Innovate Motorsports - Corporate Logo
ES#:
4809696
Mfg#:
38770
In Stock
$212.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor Socket - 22mm

ES#4490396 - 4680-1 - Oxygen Sensor Socket - 22mm - Properly remove stubborn o2 sensors. - Hazet - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Properly remove stubborn o2 sensors. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Hazet - Corporate Logo
ES#:
4490396
Mfg#:
4680-1
Ships in 1 Business Day
$118.99

This product was last offered at the strikethrough price on
05-07-2026

$115.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Oxygen Sensors & Replacement Parts

A common source of check engine lights is a failed or failing oxygen sensor. When the O2 sensor can't register oxygen content before and after your catalytic converter, it doesn't know what to do with the fuel mixture and will default to run rich. Replace old failing oxygen sensors with OEM O2 sensors or quality aftermarket O2 sensors if you're looking to save a few bucks.

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

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