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Audi A4 Engine Parts & Accessories

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Hex Head Bolt - Priced Each

ES#471534 - N91005902 - Hex Head Bolt - Priced Each - Secures crankshaft pulley to crank. M8x25 - Genuine Volkswagen Audi - Audi Volkswagen

Secures crankshaft pulley to crank. M8x25

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471534
Mfg#:
N91005902
In Stock
20% off MSRP

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

$9.99

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

$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

OE+ Upgraded Aluminum Coolant Hose Flange

ES#4907691 - 06D121132C - OE+ Upgraded Aluminum Coolant Hose Flange - Located rear engine, this flange houses the temp sensor - Rein - Audi

Located rear engine, this flange houses the temp sensor 2X Entries Into Our F80 M3 Sweepstakes

Brand:
Rein - Corporate Logo
ES#:
4907691
Mfg#:
06D121132C
In Stock
$44.99 USD
Free Shipping
on orders $49 and up

Performance Valvetrain Kit

ES#259702 - SPRK-AUDI18 - Performance Valvetrain Kit - Includes springs, retainers, and spring seats - Supertech - Audi Volkswagen

Includes springs, retainers, and spring seats

Brand:
Supertech - Corporate Logo
ES#:
259702
Mfg#:
SPRK-AUDI18
Back Ordered
20% off MSRP

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

$784.99

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

$628.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

AWE Touring to Track Conversion Kit - B9 A4/A5

ES#4044017 - 3820-31002 - AWE Touring to Track Conversion Kit - B9 A4/A5 - Looking to crank it up a notch? - AWE - Audi

Looking to crank it up a notch? 2X Entries Into Our F80 M3 Sweepstakes

Brand:
AWE - Corporate Logo
ES#:
4044017
Mfg#:
3820-31002
In Stock
5% off MSRP

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

$352.99

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

$335.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

APR Carbon Fiber Cold Air Intake System

ES#2137103 - CI100021 - APR Carbon Fiber Cold Air Intake System - Great performance and looks for your B8 - APR - Audi

Great performance and looks for your B8 Call In Or Chat For Best Price!
CARB certified for sale in all 50 states

Brand:
APR - Corporate Logo
ES#:
2137103
Mfg#:
CI100021
EO#:
d-783-2
Back Ordered
11% off MSRP

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

$806.99

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

$716.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Performance Ignition Coils - Set Of Four

ES#5338625 - 056059la08-4KT - ECS Performance Ignition Coils - Set Of Four - Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! - ECS - Audi Volkswagen

Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! 10X Entries Into Our F80 M3 Sweepstakes
For Vehicles with Engine Codes ATW and AEB (Bolt-In Style Ignition Coils)

Brand:
ECS - Corporate Logo
ES#:
5338625
Mfg#:
056059LA08-4KT
In Stock
ON SALE! SAVE 15%
$143.99

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

$122.37 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Fuel Injector Service Kit - With Service Tool - Intake Manifold Gasket

Includes all 4 injectors with installation kits, and Intake Manifold Gasket 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
5481431
Mfg#:
06H906036GKT1KT3
Ships on Oct 22, 2026
ON SALE!
$416.92 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Bolt Set

ES#2568874 - 06D198385D - Cylinder Head Bolt Set - A full set 10 head bolts to secure your cylinder head. M10x1.5x112 - Victor Reinz - Audi Volkswagen

A full set 10 head bolts to secure your cylinder head. M10x1.5x112

Brand:
Victor Reinz - Corporate Logo
ES#:
2568874
Mfg#:
06D198385D
In Stock
$35.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Pump

ES#4785750 - 06D145100H - Vacuum Pump - Generates vacuum when under positive pressure - URO - Audi Volkswagen

Generates vacuum when under positive pressure 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4785750
Mfg#:
06D145100H
In Stock
$160.98 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Supertech Inconel Exhaust Valve Kit

ES#3647521 - ST-AEVI-1103KT - Supertech Inconel Exhaust Valve Kit - Stock sized valve head diameter, factory triple groove keeper setup - Includes Supertech valves and IE valve seals - Assembled By ECS - Audi Volkswagen

Stock sized valve head diameter, factory triple groove keeper setup - Includes Supertech valves and IE valve seals 10X Entries Into Our F80 M3 Sweepstakes
*Existing factory triple-groove valve keepers are to be reused*

Brand:
Assembled By ECS - Corporate Logo
ES#:
3647521
Mfg#:
ST-AEVI-1103KT
Ships in 4 Business Days
$382.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Wiseco Performance Piston Set

ES#2794029 - WIS18TK563M815 - Wiseco Performance Piston Set - Includes rings, wire locks, and wrist pins - 81.5mm bore, 9:1 CR, 86.4mm stroke (stock) - Wiseco - Audi Volkswagen

Includes rings, wire locks, and wrist pins - 81.5mm bore, 9:1 CR, 86.4mm stroke (stock) *For use with 20mm wrist pin connecting rods*

Brand:
Wiseco - Corporate Logo
ES#:
2794029
Mfg#:
WIS18TK563M815
In Stock at Vendor
$827.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Billet Aluminum Oil Filter Housing Kit - Black Anodized

ES#2723777 - 003602ECS01A02A - Billet Aluminum Oil Filter Housing Kit - Black Anodized - Aluminum oil filter housing replacement for plastic OE housing - ECS - Audi Volkswagen

Aluminum oil filter housing replacement for plastic OE housing 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
2723777
Mfg#:
003602ECS01A02A
In Stock
ON SALE!
$144.99

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

$137.74 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Double Platinum Spark Plug - Priced Each

ES#10235 - 0242240627 - Double Platinum Spark Plug - Priced Each - Popular Bosch alternative to factory NGK plugs - Bosch - Audi Volkswagen

Popular Bosch alternative to factory NGK plugs We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
10235
Mfg#:
0242240627
In Stock
$10.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cooler Kit

ES#3183650 - 06e117021gKT - Oil Cooler Kit - Includes oil cooler, gasket, and hardware for a complete swap - Assembled By ECS - Audi

Includes oil cooler, gasket, and hardware for a complete swap 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Assembled By ECS - Corporate Logo
ES#:
3183650
Mfg#:
06E117021GKT
In Stock
ON SALE! SAVE 23%
$122.99

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

$94.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

JE Performance Forged Piston Set

ES#3675520 - 345812 - JE Performance Forged Piston Set - Includes rings, wire locks, and 22mm wrist pins - 82.5mm bore (stock), 9.6:1 CR, 92.8mm stroke (stock) - JE Piston - Audi Volkswagen

Includes rings, wire locks, and 22mm wrist pins - 82.5mm bore (stock), 9.6:1 CR, 92.8mm stroke (stock) To be used with connecting rods that accept 22mm wrist pins

Brand:
JE Piston - Corporate Logo
ES#:
3675520
Mfg#:
345812
In Stock
Limited Qty Sale
$899.99

This product was last offered at the strikethrough price on
09-03-2026

$817.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Balance Shaft Repair Set

ES#2631750 - 06H198205N - Balance Shaft Repair Set - Shafts necessary for balance shaft failure repair - Genuine Volkswagen Audi - Audi Volkswagen

Shafts necessary for balance shaft failure repair

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2631750
Mfg#:
06H198205N
In Stock
14% off MSRP

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

$815.99

This product was last offered at the strikethrough price on
06-25-2026

$699.99 USD
Free Shipping
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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Manufacturer names and/or part numbers are used only for identification purposes.

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