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Audi A4 Engine Parts & Accessories

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Accessory Belt Idler Pulley

ES#1928557 - 06E903341G - Accessory Belt Idler Pulley - Also referred to as the 'relay roller' - Genuine Volkswagen Audi - Audi

Also referred to as the 'relay roller'

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1928557
Mfg#:
06E903341G
In Stock
15% off MSRP

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

$100.00

This product was last offered at the strikethrough price on
09-20-2026

$84.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt Tensioner

ES#3214745 - 06L903133D - Accessory Belt Tensioner - Keep your drive belt tight - Ina - Audi Volkswagen

Keep your drive belt tight We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
3214745
Mfg#:
06L903133D
Back Ordered
$67.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Forged H-Beam Connecting Rods

ES#2794314 - IERHVC1 - Forged H-Beam Connecting Rods - Set of 4 - Integrated Engineering - Audi Volkswagen

Set of 4 Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!

For use with factory pistons only

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794314
Mfg#:
IERHVC1
In Stock
$542.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Forged Piston And Connecting Rod Kit

ES#5444939 - CMBMVL027JG042 - Forged Piston And Connecting Rod Kit - For VW/Audi 1.8L 20V 81.5mm - SPA Performance - Audi Volkswagen

For VW/Audi 1.8L 20V 81.5mm

Brand:
SPA Performance - Corporate Logo
ES#:
5444939
Mfg#:
CMBMVL027JG042
In Stock at Vendor
ON SALE!
$949.99

This product was last offered at the strikethrough price on
08-31-2026

$902.41 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mahle PowerPak Piston Set - 83mm Bore

ES#3476219 - MAHFSI197800168 - Mahle PowerPak Piston Set - 83mm Bore - Forged alloy pistons - 83mm Bore (+.5mm overbore), 20mm wrist pins, 9.25:1 compression ratio - Integrated Engineering - Audi Volkswagen

Forged alloy pistons - 83mm Bore (+.5mm overbore), 20mm wrist pins, 9.25:1 compression ratio Buy Integrated Engineering Software from 9/3/26 - 9/30/26 for a chance to win your Software for FREE!

Brand:
Integrated Engineering - Corporate Logo
ES#:
3476219
Mfg#:
MAHFSI197800168
In Stock
$899.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

JE Performance Forged Piston Set

ES#3612517 - 284779 - JE Performance Forged Piston Set - Includes rings, wrist pins, and pin locks - 82.5mm bore, 9.5:1 CR - JE Piston - Audi Volkswagen

Includes rings, wrist pins, and pin locks - 82.5mm bore, 9.5:1 CR

Brand:
JE Piston - Corporate Logo
ES#:
3612517
Mfg#:
284779
In Stock
$899.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Aluminum Oil Filter Adapter

ES#5435534 - 06E115405KPRM - Aluminum Oil Filter Adapter - Secures to the engine block for housing the oil filter - URO - Audi Volkswagen Porsche

Secures to the engine block for housing the oil filter 2X Entries Into Our F80 M3 Sweepstakes

Brand:
URO - Corporate Logo
ES#:
5435534
Mfg#:
06E115405KPRM
In Stock
$107.99 USD
Free Shipping
on orders $49 and up

Engine Oil Pump

ES#2718712 - 06A115105B - Engine Oil Pump - Keeps oil flowing through the engine - Vaico - Audi Volkswagen

Keeps oil flowing through the engine We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
2718712
Mfg#:
06A115105B
In Stock
ON SALE!
$85.99

This product was last offered at the strikethrough price on
08-03-2026

$81.69 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Rear Oxygen Sensor - Priced Each

ES#4069386 - 06E906265Q - Rear Oxygen Sensor - Priced Each - Fits left and right side - Bosch - Audi

Fits left and right side We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
4069386
Mfg#:
06E906265Q
In Stock
$192.18 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Head Gasket - Big Bore 1.8T

ES#4316142 - 034-201-3027 - Head Gasket - Big Bore 1.8T - Finally, a big bore MLS head gasket option for the 1.8T! - 034Motorsport - Audi Volkswagen

Finally, a big bore MLS head gasket option for the 1.8T! 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4316142
Mfg#:
034-201-3027
In Stock
$112.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Liqui Moly MolyGen - Oil Service Kit - With ECS Magnetic Drain Plug

ES#3439004 - PLSOILKT5 - Liqui Moly MolyGen - Oil Service Kit - With ECS Magnetic Drain Plug - Includes standard Hengst oil filter and Liqui Moly 5w-40 oil with MolyGen technology - Assembled By ECS - Audi Volkswagen

Includes standard Hengst oil filter and Liqui Moly 5w-40 oil with MolyGen technology 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3439004
Mfg#:
PLSOILKT5
In Stock
ON SALE! SAVE 11%
$107.99

This product was last offered at the strikethrough price on
08-31-2026

$96.00 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Intake Manifold Runner Position Sensor

ES#2831954 - 07L907386B - Intake Manifold Runner Position Sensor - Located on the side of the intake manifold - Genuine Volkswagen Audi - Audi Volkswagen

Located on the side of the intake manifold

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2831954
Mfg#:
07L907386B
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.

$171.99

This product was last offered at the strikethrough price on
09-20-2026

$157.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Engine Wiring Harness

ES#453037 - 8K1971072FK - Engine Wiring Harness - Complete harness for the engine - Genuine Volkswagen Audi - Audi

Complete harness for the engine For 6-Speed manual transmission only up to the 2012 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
453037
Mfg#:
8K1971072FK
Ships on Oct 6, 2026
6% off MSRP

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

$2845.99

This product was last offered at the strikethrough price on
08-31-2026

$2683.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Audi B8 A4/S4 Pre-Facelift Carbon Fiber Radiator Support Cover

ES#3974236 - 024713ecs01KT - Audi B8 A4/S4 Pre-Facelift Carbon Fiber Radiator Support Cover - Carbon fiber, front and center! - ECS - Audi

Carbon fiber, front and center! 10X Entries Into Our F80 M3 Sweepstakes

Fits pre-facelift models up to 2013

Brand:
ECS - Corporate Logo
ES#:
3974236
Mfg#:
024713ECS01KT
In Stock
ON SALE! SAVE 10%
$425.99

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

$383.39 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Timing Belt Damper

ES#2535081 - 06B109477A - Timing Belt Damper - Applies pressure to the tensioning roller - URO - Audi Volkswagen

Applies pressure to the tensioning roller 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
From VIN 8D-1-042385, split is in the 2001 model year

Brand:
URO - Corporate Logo
ES#:
2535081
Mfg#:
06B109477A
In Stock
$60.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Replacement Kit

ES#4017845 - CHS0646 - Coolant Flange Replacement Kit - A comprehensive kit designed to service the commonly failing cooling system components in a single repair. - Rein - Audi

A comprehensive kit designed to service the commonly failing cooling system components in a single repair. 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4017845
Mfg#:
CHS0646
In Stock
$148.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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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