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Audi A4 Engine Parts & Accessories

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Thermostat/Water Pump Kit - With Belt

ES#5425238 - 06L121111J - Thermostat/Water Pump Kit - With Belt - Advanced design with fewer moving parts and lower weight - without sacrificing cooling performance or warm-up temperature curve. Includes thermostat, water pump, union, and belt. - Bremmen Parts - Audi Volkswagen Porsche

Advanced design with fewer moving parts and lower weight - without sacrificing cooling performance or warm-up temperature curve. Includes thermostat, water pump, union, and belt. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5425238
Mfg#:
06L121111J
In Stock
$270.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Upgraded diverter Valve 06H145710D with hardware

ES#2823251 - 06H145710Dkt4 - Upgraded diverter Valve 06H145710D with hardware - Upgrade to the piston style diverter valve with installation hardware - Assembled By ECS - Audi Volkswagen

Upgrade to the piston style diverter valve with installation hardware 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2823251
Mfg#:
06H145710DKT4
In Stock
ON SALE!
$56.99

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

$53.96 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Tuning Street Shield Aluminum Skid Plate Kit

ES#2771912 - 003251ECS01AKT2 - ECS Tuning Street Shield Aluminum Skid Plate Kit - Protect your vehicle's oil pan & electronic steering rack with this 4mm thick aluminum skid plate - ECS - Audi

Protect your vehicle's oil pan & electronic steering rack with this 4mm thick aluminum skid plate 10X Entries For Our 25th Anniversary Sweepstakes!
Fits B8 chassis A4/S4/A5/S5 models from the 2013 model year

Brand:
ECS - Corporate Logo
ES#:
2771912
Mfg#:
003251ECS01AKT2
In Stock
ON SALE!
$416.99

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

$396.14 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

APR Iridium Pro Spark Plug - Set Of Four

ES#4616188 - z1003100-4KT - APR Iridium Pro Spark Plug - Set Of Four - An excellent upgrade for tuned engines. 14X26.5X16mm - Heat Range 9 - APR - Audi Volkswagen Porsche

An excellent upgrade for tuned engines. 14X26.5X16mm - Heat Range 9 Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
APR - Corporate Logo
ES#:
4616188
Mfg#:
Z1003100-4KT
In Stock
$127.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4 2.0T Non Valved Exhaust System - Cat Back

ES#4703829 - 049103LA01 - Audi B9 A4 2.0T Non Valved Exhaust System - Cat Back - Experience your driving passion with our ECS Exhaust System! - ECS - Audi

Experience your driving passion with our ECS Exhaust System! 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles up through the 2018 model year only (Pre-Facelift)

Brand:
ECS - Corporate Logo
ES#:
4703829
Mfg#:
049103LA01
In Stock
ON SALE!
Starting at $967.63 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Ignition Service Kit

ES#2539447 - 06E905115EKTN - Ignition Service Kit - Includes four Original Equipment red coil packs and four NGK iridium spark plugs (BKR8EIX - One heat range colder) - Assembled By ECS - Audi Volkswagen

Includes four Original Equipment red coil packs and four NGK iridium spark plugs (BKR8EIX - One heat range colder) 10X Entries For Our 25th Anniversary Sweepstakes!
Beneficial to cars with basic performance upgrades

Brand:
Assembled By ECS - Corporate Logo
ES#:
2539447
Mfg#:
06E905115EKTN
In Stock
ON SALE!
$171.12 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Street Density Line Motor Mount Kit - 60 Durometer

ES#4619953 - 034-509-5041 - Street Density Line Motor Mount Kit - 60 Durometer - Void-free and fluid-free, eliminating the slop associated with the factory mounts - 034Motorsport - Audi

Void-free and fluid-free, eliminating the slop associated with the factory mounts

Brand:
034Motorsport - Corporate Logo
ES#:
4619953
Mfg#:
034-509-5041
In Stock
$480.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Intake Manifold with Installation Kit

ES#3194908 - 06H133201ANkt - Intake Manifold with Installation Kit - Everything you need to replace your Intake manifold - Assembled By ECS - Audi

Everything you need to replace your Intake manifold 10X Entries For Our 25th Anniversary Sweepstakes!
For models without Flex Fuel or metal manifold.

Brand:
Assembled By ECS - Corporate Logo
ES#:
3194908
Mfg#:
06H133201ANKT
In Stock
ON SALE! SAVE 23%
$403.13

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

$309.59 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Complete Valve Cover Gasket Kit

ES#3662304 - 06b103831jKT - Complete Valve Cover Gasket Kit - Includes gaskets, hardware, and silicone sealant for an all-inclusive service kit - Assembled By ECS - Audi

Includes gaskets, hardware, and silicone sealant for an all-inclusive service kit 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3662304
Mfg#:
06B103831JKT
In Stock
ON SALE! SAVE 18%
$241.99

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

$198.20 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Coil Pack - Set Of Four

ES#3245923 - 06E905115Fkt - Coil Pack - Set Of Four - Dress up your engine bay and restore power with these red top coil packs - Bosch - Audi Volkswagen

Dress up your engine bay and restore power with these red top coil packs 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
3245923
Mfg#:
06E905115FKT
In Stock
$172.99

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

$131.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B7 A4 2.0T Luft-Technik Intercooler and Charge Pipe Kit

ES#3698662 - 017623ecs01-01 - Audi B7 A4 2.0T Luft-Technik Intercooler and Charge Pipe Kit - Full kit to upgrade your intercooler, charge pipes, and power steering cooler! - ECS - Audi

Full kit to upgrade your intercooler, charge pipes, and power steering cooler! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3698662
Mfg#:
017623ECS01-01
In Stock
ON SALE! SAVE 10%
$917.99

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

$826.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Genuine Oil Service Kit (5w-40)

ES#2776767 - 06l115562KT - Genuine Oil Service Kit (5w-40) - Includes 5w-40 Genuine oil, filter and drain plug - Genuine Volkswagen Audi - Audi Volkswagen

Includes 5w-40 Genuine oil, filter and drain plug

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2776767
Mfg#:
06L115562KT
In Stock
$115.99

This product was last offered at the strikethrough price on
07-17-2026

$114.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

3" High Flow Catalytic Converter

ES#2972519 - EXH-TDP-004-B8HF - 3" High Flow Catalytic Converter - Designed to seamlessly fit in place of factory catalytic converter - CTS - Audi

Designed to seamlessly fit in place of factory catalytic converter

Brand:
CTS - Corporate Logo
ES#:
2972519
Mfg#:
EXH-TDP-004-B8HF
Back Ordered
Auto Notify
ON SALE! SAVE 10%
$299.99

This product was last offered at the strikethrough price on
07-10-2026

$269.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Turbocharger with ECS Installation Kit

ES#3195155 - 8K0253115HKT2 - Turbocharger with ECS Installation Kit - Restore your boost levels and get going! - Assembled By ECS - Audi

Restore your boost levels and get going! 10X Entries For Our 25th Anniversary Sweepstakes!
Up to the 2012 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
3195155
Mfg#:
8K0253115HKT2
In Stock
$1274.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Audi B9 A4/S4/A5 Engine Street Shield Aluminum Skid Plate

ES#3411957 - 019207ecs01KT - Audi B9 A4/S4/A5 Engine Street Shield Aluminum Skid Plate - Protect your vehicle's plastic oil pan with this 4mm thick aluminum skid plate - ECS - Audi

Protect your vehicle's plastic oil pan with this 4mm thick aluminum skid plate 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3411957
Mfg#:
019207ECS01KT
In Stock
$391.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

High Performance Genuine Engine Oil (5w-40) - 1 Quart

ES#4871642 - GC555401QDSP - High Performance Genuine Engine Oil (5w-40) - 1 Quart - Meets Volkswagen & Audi 502.00 / 505.00 specification - Genuine Volkswagen Audi - Audi Volkswagen

Meets Volkswagen & Audi 502.00 / 505.00 specification

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
4871642
Mfg#:
GC555401QDSP
In Stock
$15.29

This product was last offered at the strikethrough price on
07-16-2026

$14.99 USD
Free Shipping
on orders $49 and up

More About Engine Parts & Accessories

Whether you're maintaining or repairing your stock engine or looking for added horsepower, we have one of the most comprehensive inventories of engine parts and accessories for German cars. From hard engine parts like connecting rods, pistons, cylinder heads, short blocks, and engine timing parts to performance engine software upgrades; we have you covered.

Let us help you find the parts that fit your Audi

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