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Audi A4 Engine Service & Maintenance Parts

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Accessory Belt Kit

ES#3648456 - 06e903137jkt3KT - Accessory Belt Kit - Includes belt, tensioner, & hardware to ensure that your belt is tight and reliable. - Genuine Volkswagen Audi - Audi

Includes belt, tensioner, & hardware to ensure that your belt is tight and reliable.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
3648456
Mfg#:
06E903137JKT3KT
Ships in 3 Business Days
$350.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling System Refresh Kit - Level 3

ES#3648516 - 06D121132CKT4 - Cooling System Refresh Kit - Level 3 - Replace critical cooling system components and perform a proper coolant system flush! - Assembled By ECS - Audi

Replace critical cooling system components and perform a proper coolant system flush! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3648516
Mfg#:
06D121132CKT4
Ships in 3 Business Days
ON SALE!
$385.99

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

$350.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Oxygen Sensor - Priced Each

ES#1853396 - 1K0998262 - Oxygen Sensor - Priced Each - Keep your engine running efficiently - Genuine Volkswagen Audi - Audi Volkswagen

Keep your engine running efficiently

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1853396
Mfg#:
1K0998262
Ships in 1-2 days
7% off MSRP

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

$374.99

This product was last offered at the strikethrough price on
08-17-2026

$349.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#1853398 - 1K0998262AB - Oxygen Sensor - Priced Each - Keep your engine running efficiently - Genuine Volkswagen Audi - Audi Volkswagen

Keep your engine running efficiently For engine code ATQ, fits left and right position

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1853398
Mfg#:
1K0998262AB
Ships in 4 Business Days
7% off MSRP

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

$374.99

This product was last offered at the strikethrough price on
08-17-2026

$349.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor - Priced Each

ES#1853401 - 1K0998262E - Oxygen Sensor - Priced Each - Keep your engine running efficiently - Genuine Volkswagen Audi - Audi Volkswagen

Keep your engine running efficiently

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1853401
Mfg#:
1K0998262E
Ships in 5 Business Days
7% off MSRP

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

$374.99

This product was last offered at the strikethrough price on
08-17-2026

$349.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oxygen Sensor 4 Pin - Black

ES#1853403 - 1K0998262R - Oxygen Sensor 4 Pin - Black - Located after the catalytic converter - Genuine Volkswagen Audi - Audi Volkswagen

Located after the catalytic converter For models with BGN engine code only - Fits left and right sides

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1853403
Mfg#:
1K0998262R
Ships in 8 Business Days
7% off MSRP

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

$374.99

This product was last offered at the strikethrough price on
08-17-2026

$349.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Zerex Ht-12 Pink

ES#5435259 - 904683 - Zerex Ht-12 Pink - Si-OAT technology specifically engineered for modern BMW, VW, Audi, and Porsche vehicles. - Zerex - Audi Volkswagen

Si-OAT technology specifically engineered for modern BMW, VW, Audi, and Porsche vehicles.

Brand:
Zerex - Corporate Logo
ES#:
5435259
Mfg#:
904683
In Stock at Vendor
$25.99

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

$24.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

2.0T Coil Pack Conversion Kit - Stage 2

ES#2713397 - 002598ECS07KT - 2.0T Coil Pack Conversion Kit - Stage 2 - Includes wrinkle black conversion plate -w- black 2.0T coils and red hold down kit - ECS - Audi Volkswagen

Includes wrinkle black conversion plate -w- black 2.0T coils and red hold down kit 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2713397
Mfg#:
002598ECS07KT
Ships in 3 Business Days
ON SALE!
$366.99

This product was last offered at the strikethrough price on
06-13-2026

$348.64 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Timing Belt Kit - Ultimate Plus With Gates Racing Timing Belt

ES#2569814 - 06B109119FKT1 - Timing Belt Kit - Ultimate Plus With Gates Racing Timing Belt - Looking for the best timing belt kit on the market? Look no further than ECS Tuning - Assembled By ECS - Audi

Looking for the best timing belt kit on the market? Look no further than ECS Tuning 10X Entries For Our 25th Anniversary Sweepstakes!
From VIN 8D-1-042385, split is in the 2001 model year - For vehicles with AWM head

Brand:
Assembled By ECS - Corporate Logo
ES#:
2569814
Mfg#:
06B109119FKT1
Ships in 1-2 days
ON SALE! SAVE 14%
$405.99

This product was last offered at the strikethrough price on
03-24-2026

$348.14 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

BMC Performance Air Filter - Priced Each

ES#4039346 - FB960/04 - BMC Performance Air Filter - Priced Each - High-Flow cotton gauze filter designed to be a performer, while lasting a lifetime - BMC - Audi

High-Flow cotton gauze filter designed to be a performer, while lasting a lifetime For vehicles with CYMC engine code only

Brand:
BMC - Corporate Logo
ES#:
4039346
Mfg#:
FB960/04
In Stock at Vendor
$86.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Truck Series Oil Treatment - 500ml / 16.9oz

ES#3999021 - 20256 - Truck Series Oil Treatment - 500ml / 16.9oz - Engine Armor with MoS2 - Reduces friction and engine wear - Treats up to 7 Liters / 7.4 Quarts of Engine Oil - Liqui-Moly - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Engine Armor with MoS2 - Reduces friction and engine wear - Treats up to 7 Liters / 7.4 Quarts of Engine Oil 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
3999021
Mfg#:
20256
In Stock
35% off MSRP

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

$22.99

This product was last offered at the strikethrough price on
06-08-2026

$14.99 USD
Free Shipping
on orders $49 and up

PNP Ethanol Sensor Harness For Motiv Re|Flex Plus

ES#4882977 - 201-0410 - PNP Ethanol Sensor Harness For Motiv Re|Flex Plus - This Plug-n-Play Ethanol Sensor Harness from Precision Raceworks is certified by Motiv and directly compatible with the ReFlex+. - Precision Raceworks - Audi BMW Volkswagen Mercedes Benz

This Plug-n-Play Ethanol Sensor Harness from Precision Raceworks is certified by Motiv and directly compatible with the ReFlex+.

Brand:
Precision Raceworks - Corporate Logo
ES#:
4882977
Mfg#:
201-0410
Ships in 9 Business Days
$49.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Filter Oil & Cleaner Kit

ES#4830731 - vwr120000KT - Filter Oil & Cleaner Kit - The filter element deserves to be well looked after and be a part of your regular maintenance schedule. - Racingline - Audi Volkswagen

The filter element deserves to be well looked after and be a part of your regular maintenance schedule.

Brand:
Racingline - Corporate Logo
ES#:
4830731
Mfg#:
VWR120000KT
Back Ordered
Auto Notify
$48.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Rear Oxygen Sensor - Priced Each

ES#281028 - 06E906265Q - Rear Oxygen Sensor - Priced Each - Keep your engine running efficiently - Genuine Volkswagen Audi - Audi

Keep your engine running efficiently Fits the left and right position

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
281028
Mfg#:
06E906265Q
Ships in 5 Business Days
$340.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Ignition Service Kit - Black Coil Pack Wiring Cover & Service Tools

ES#3464405 - 06E905115FKKT6 - Ignition Service Kit - Black Coil Pack Wiring Cover & Service Tools - Assembled By ECS - Audi Volkswagen

10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3464405
Mfg#:
06E905115FKKT6
In Stock
ON SALE! SAVE 10%
$375.99

This product was last offered at the strikethrough price on
03-12-2026

$338.54 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Oil Filter Housing Hook-Up - Polished

ES#3137380 - 005887ECS01KT3 - Billet Aluminum Oil Filter Housing Hook-Up - Polished - Includes free Hengst Oil Filter with purchase of ECS Billet Oil Filter Housing - Limited time only! - Assembled By ECS - Audi

Includes free Hengst Oil Filter with purchase of ECS Billet Oil Filter Housing - Limited time only! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3137380
Mfg#:
005887ECS01KT3
In Stock
ON SALE! SAVE 19%
$137.99

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

$112.14 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

More About Engine Service & Maintenance Parts

An ounce of prevention improves engine reliability and heads off big-ticket repairs. On average, the modest cost or periodic maintenance pays handsome rewards. Plan now to put your car on a regular schedule that includes fluid and filter changes, inspections, and recommended service.

Let us help you find the parts that fit your Audi

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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