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Audi B5 A4 Quattro 1.8T Engine Parts & Accessories

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ES#3235744 - 4B0121055J - Radiator Hose - Lower - Connects the lower radiator port to the water pump and expansion tank - Gates - Audi Volkswagen

Connects the lower radiator port to the water pump and expansion tank

Brand:
Gates - Corporate Logo
ES#:
3235744
Mfg#:
4B0121055J
Ships on Nov 24, 2026
$142.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#1543 - AWMTBKEV - Timing Belt Kit - Standard - Includes the basic components to service your timing belt - Assembled By ECS - Audi

Includes the basic components to service your timing belt 10X Entries Into Our F80 M3 Sweepstakes
Up to VIN 8D-1-042384, split is in the 2001 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
1543
Mfg#:
AWMTBKEV
In Stock
ON SALE!
$142.17 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2712768 - 078906265AA - Oxygen Sensor - Priced Each - Located behind the catalytic converter - Vemo - Audi Volkswagen

Located behind the catalytic converter

Brand:
Vemo - Corporate Logo
ES#:
2712768
Mfg#:
078906265AA
Ships in 1 Business Day
$141.67 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#1600384 - 0000531126 - Split Valve Keeper - Priced Each - Engine Valve Spring Retainer Keeper - Split cotter for intake or exhaust valve. Two required per valve - Genuine Mercedes Benz - Audi Volkswagen

Engine Valve Spring Retainer Keeper - Split cotter for intake or exhaust valve. Two required per valve

Brand:
Genuine Mercedes Benz - Corporate Logo
ES#:
1600384
Mfg#:
0000531126
In Stock
$2.76 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2661314 - 058131101B - EGR Valve - Also known as the 'combi valve' - Pierburg - Audi Volkswagen

Also known as the 'combi valve' Engine code ATW

Brand:
Pierburg - Corporate Logo
ES#:
2661314
Mfg#:
058131101B
Ships in 1-2 days
$139.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#2872399 - 8D0121101K - Radiator Hose - Upper - Connects the upper radiator port to the hard water pipe - Febi - Audi Volkswagen

Connects the upper radiator port to the hard water pipe We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2872399
Mfg#:
8D0121101K
In Stock
Limited Qty Sale
$23.99

This product was last offered at the strikethrough price on
10-30-2026

$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2901738 - 8D0959481B - Auxiliary Fan Switch - 4 Pin - Located on the lower radiator hose connection - Vemo - Audi Volkswagen

Located on the lower radiator hose connection

Brand:
Vemo - Corporate Logo
ES#:
2901738
Mfg#:
8D0959481B
Ships in 1 Business Day
$19.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2582050 - 058103385B - Cylinder Head Bolt Set - A full set to secure your cylinder head - Elring - Audi Volkswagen

A full set to secure your cylinder head 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
2582050
Mfg#:
058103385B
In Stock
$23.99

This product was last offered at the strikethrough price on
08-07-2026

$13.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3141663 - N90945002KT - Water Pump Hardware Kit - Complete hardware kit for replacing the water pump - Assembled By ECS - Audi

Complete hardware kit for replacing the water pump 10X Entries Into Our F80 M3 Sweepstakes
AWM engine code

Brand:
Assembled By ECS - Corporate Logo
ES#:
3141663
Mfg#:
N90945002KT
In Stock
ON SALE!
$13.99

This product was last offered at the strikethrough price on
06-15-2026

$12.68 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2575153 - 038903803EX - Remanufactured Voltage Regulator - Includes a $10 refundable core charge - Genuine Volkswagen Audi - Audi Volkswagen

Includes a $10 refundable core charge For 120 amp alternators from VIN 8D-X-200001, split is in the 1999 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2575153
Mfg#:
038903803EX
Ships in 8 Business Days
$146.99

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

$138.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#258767 - 06B109244 - Timing Belt Idler Roller - Lower - Replace with timing belt service - Genuine Volkswagen Audi - Audi Volkswagen

Replace with timing belt service

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
258767
Mfg#:
06B109244
Ships in 1-2 days
12% off MSRP

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

$77.99

This product was last offered at the strikethrough price on
10-05-2026

$68.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2813040 - 06B109477A - Timing Belt Damper - Applies pressure to the tensioning roller - Hamburg Tech - Audi Volkswagen

Applies pressure to the tensioning roller We Price Match - Give Us A Call or Chat!
From VIN 8D-1-042385, split is in the 2001 model year

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813040
Mfg#:
06B109477A
Ships in 1 Business Day
$45.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2873334 - 068103085E - Front Crankshaft/Camshaft Seal - Priced Each - Stop oil leaks and prevent internal engine damage. 47x10 - Febi - Audi Volkswagen

Stop oil leaks and prevent internal engine damage. 47x10 We Price Match - Give Us A Call or Chat!
Engine codes AEB & ATW. Seals the intermediate shaft to the guide ring

Brand:
Febi - Corporate Logo
ES#:
2873334
Mfg#:
068103085E
In Stock
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4338186 - 037906461C - Mass Air Flow Sensor (MAF) - Restore fuel economy and performance - Bremi - Audi Volkswagen

Restore fuel economy and performance From VIN 8D-W-080001, split is in the 1998 model year

Brand:
Bremi - Corporate Logo
ES#:
4338186
Mfg#:
037906461C
Ships in 1 Business Day
$146.99

This product was last offered at the strikethrough price on
07-15-2026

$135.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4846042 - 06B121065AC - Coolant Pipe - Return  - Main return pipe that connects to the water pump and the heater core - Vaico - Audi

Main return pipe that connects to the water pump and the heater core We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4846042
Mfg#:
06B121065AC
Back Ordered
$93.99

This product was last offered at the strikethrough price on
10-26-2026

$67.99 USD
Free Shipping
on orders $49 and up
ES#6416 - 4A0805121A - Plastic Dowel Pin - Priced Each - Secures the belly pan to the fender liners - Genuine Volkswagen Audi - Audi

Secures the belly pan to the fender liners

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
6416
Mfg#:
4A0805121A
Ships in 5 Business Days
3% off MSRP

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

$11.67

This product was last offered at the strikethrough price on
09-30-2026

$11.32 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.

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