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Audi B5 A4 Quattro 1.8T Engine Parts & Accessories

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ES#2731898 - 4B0121055J - Radiator Hose - Lower - Connects the lower radiator port to the water pump and expansion tank - Rein - Audi Volkswagen

Connects the lower radiator port to the water pump and expansion tank 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2731898
Mfg#:
4B0121055J
Back Ordered
$103.99

This product was last offered at the strikethrough price on
10-22-2026

$54.89 USD
Free Shipping
on orders $49 and up
ES#4743207 - 034-105-Z021 - High Flow Exhaust Manifold Hardware Kit (1.8T) - Direct replacement installation hardware kit for securing your 034Motorsport High Flow Exhaust Manifold, ensuring a leak-free seal and preventing bolts from backing out under extreme turbo heat. - 034Motorsport - Audi Volkswagen

Direct replacement installation hardware kit for securing your 034Motorsport High Flow Exhaust Manifold, ensuring a leak-free seal and preventing bolts from backing out under extreme turbo heat. 2X Entries Into Our F80 M3 Sweepstakes

Brand:
034Motorsport - Corporate Logo
ES#:
4743207
Mfg#:
034-105-Z021
Ships in 2 Business Days
$27.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3189917 - 82571 - Brake Fluid Reservoir Cap - Clean up your engine bay with a new cap - Dorman - Audi Volkswagen

Clean up your engine bay with a new cap

Brand:
Dorman - Corporate Logo
ES#:
3189917
Mfg#:
82571
Ships in 4 Business Days
$53.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2102470 - SEAT-H1000 - SuperTech Valve Seat - Priced Each - Supertech - Audi Volkswagen

Brand:
Supertech - Corporate Logo
ES#:
2102470
Mfg#:
SEAT-H1000
Ships in 8 Business Days
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#260091 - N90353501 - Intermediate Shaft O-Ring - Seals the guide ring the to the intermediate shaft - Victor Reinz - Audi Volkswagen

Seals the guide ring the to the intermediate shaft Engine codes AEB & ATW

Brand:
Victor Reinz - Corporate Logo
ES#:
260091
Mfg#:
N90353501
Ships in 1 Business Day
$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#276926 - 053105229A - Torx Screw - Priced Each - Install new hardware with your new parts. M6x16 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6x16 Secures the impulse rotor to the crankshaft

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
276926
Mfg#:
053105229A
In Stock
Limited Qty Sale
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3956 - 06B109243B - Timing Belt Tensioner Roller - Also known as the Tensioning roller - NTN - Audi Volkswagen

Also known as the Tensioning roller From VIN 8D-1-042385, split is in the 2001 model year

Brand:
NTN - Corporate Logo
ES#:
3956
Mfg#:
06B109243B
Special Order: No Guaranteed ETA
$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2627317 - 8D0121055T - Radiator Hose - Lower - Connects the lower radiator port to the thermostat housing - Rein - Audi Volkswagen

Connects the lower radiator port to the thermostat housing 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
2627317
Mfg#:
8D0121055T
Ships in 3 Business Days
$37.99

This product was last offered at the strikethrough price on
10-22-2026

$26.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2804121 - 058121132KT - Cooling Flange Replacement Kit - Cure the common coolant leak coming from the back of your engine compartment - Assembled By ECS - Audi

Cure the common coolant leak coming from the back of your engine compartment 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with AEB & ATW engine codes with square coolant temp sensor

Brand:
Assembled By ECS - Corporate Logo
ES#:
2804121
Mfg#:
058121132KT
Ships on Apr 29, 2027
ON SALE!
$55.99

This product was last offered at the strikethrough price on
08-13-2026

$52.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#248362 - 035906149a - Fuel Injector O-Ring - Priced Each - Keep your injector from leaking. 7.52x3.53 - Victor Reinz - Audi Volkswagen

Keep your injector from leaking. 7.52x3.53 Fits the upper position

Brand:
Victor Reinz - Corporate Logo
ES#:
248362
Mfg#:
035906149A
In Stock
$2.99

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

$2.03 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#8803 - N0102724 - Hex Bolt - Priced Each - Install new hardware with your new parts. M8x26 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M8x26

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
8803
Mfg#:
N0102724
In Stock
13% off MSRP

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

$2.90

This product was last offered at the strikethrough price on
11-05-2026

$2.51 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#5457103 - 058260511 - A/C Belt Tensioner - Keep your drive belt tight - Bremmen Parts - Audi Volkswagen

Keep your drive belt tight 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bremmen Parts - Corporate Logo
ES#:
5457103
Mfg#:
058260511
In Stock
ON SALE! SAVE 15%
$30.99

This product was last offered at the strikethrough price on
09-16-2026

$26.34 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#2575555 - 06A103213F - Crankcase Breather Hose  - Connects the oil filter adapter to the three-way valve housing - Hamburg Tech - Audi Volkswagen

Connects the oil filter adapter to the three-way valve housing We Price Match - Give Us A Call or Chat!
Engine code AWM

Brand:
Hamburg Tech - Corporate Logo
ES#:
2575555
Mfg#:
06A103213F
In Stock
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#251240 - AWMABK - Accessory Belt Kit - Replace both of your drive belts at once - Assembled By ECS - Audi

Replace both of your drive belts at once 10X Entries Into Our F80 M3 Sweepstakes
Engine code AWM

Brand:
Assembled By ECS - Corporate Logo
ES#:
251240
Mfg#:
AWMABK
In Stock
ON SALE! SAVE 14%
$29.99

This product was last offered at the strikethrough price on
09-04-2026

$25.94 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4004627 - N10354602 - Torx Screw - Priced Each - Install new hardware with your new parts. M5x16 - Rein - Audi Volkswagen

Install new hardware with your new parts. M5x16 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!
Secure the a/c condenser fan to the bracket

Brand:
Rein - Corporate Logo
ES#:
4004627
Mfg#:
N10354602
Back Ordered
$7.99

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

$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3463362 - 8D0819371H - Heater Core Hose - Supply - Connects the heater core to the cylinder head flange - Hudson - Audi Volkswagen

Connects the heater core to the cylinder head flange

Brand:
Hudson - Corporate Logo
ES#:
3463362
Mfg#:
8D0819371H
Ships in 3 Business Days
$25.70 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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