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Audi A4 Engine Parts & Accessories

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Radiator

ES#4836243 - 8W0121251AK - Radiator - Ensure proper cooling for your engine with a new radiator. - TYC - Audi

Ensure proper cooling for your engine with a new radiator.

Brand:
TYC - Corporate Logo
ES#:
4836243
Mfg#:
8W0121251AK
In Stock at Vendor
$201.99

This product was last offered at the strikethrough price on
05-07-2026

$195.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Oil Filter Cover

ES#4159250 - 06E115433C - Oil Filter Cover - Replace your cracked or damaged filter housing - Hamburg Tech - Audi

Replace your cracked or damaged filter housing We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
4159250
Mfg#:
06E115433C
In Stock
Limited Qty Sale
$31.99

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

$27.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator

ES#2901824 - 8K0121251T - Radiator - Keep your cooling system operating properly - Vemo - Audi

Keep your cooling system operating properly Automatic transmission vehicles only

Brand:
Vemo - Corporate Logo
ES#:
2901824
Mfg#:
8K0121251T
In Stock at Vendor
$402.99

This product was last offered at the strikethrough price on
05-07-2026

$390.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Alternator - 150amp

ES#2725353 - 06B903016QX - Alternator - 150amp - New alternator with no core charge - Valeo - Audi

New alternator with no core charge We Price Match - Give Us A Call or Chat!

Brand:
Valeo - Corporate Logo
ES#:
2725353
Mfg#:
06B903016QX
Ships on Sep 10, 2026
$389.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Cylinder Head Gasket

ES#277551 - 058103383Q - Cylinder Head Gasket - Stop leaks and restore engine power - Genuine Volkswagen Audi - Audi Volkswagen

Stop leaks and restore engine power

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
277551
Mfg#:
058103383Q
Ships on Sep 3, 2026
7% off MSRP

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

$208.99

This product was last offered at the strikethrough price on
08-18-2026

$194.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Electric Cooling Fan - Left (400mm)

ES#3438640 - 8E0959455k - Electric Cooling Fan - Left (400mm) - Keep your cooling system operating properly - Hamburg Tech - Audi

Keep your cooling system operating properly We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
3438640
Mfg#:
8E0959455K
In Stock
$129.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Diverter Valve - Polished

ES#2917784 - DV25 - Diverter Valve - Polished - Keep your turbo boosting like it should - Euro Sport Acc - Audi Volkswagen

Keep your turbo boosting like it should

Brand:
Euro Sport Acc - Corporate Logo
ES#:
2917784
Mfg#:
DV25
Ships in 3 Business Days
$129.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2535175 - 8D0121403L - Coolant Expansion Tank - Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank - URO - Audi Volkswagen

Clean up your engine bay or replaced your cracked unit with a new coolant expansion tank 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Fits vehicles from VIN# 8D-W-007 800, Split is in model year 1998

Brand:
URO - Corporate Logo
ES#:
2535175
Mfg#:
8D0121403L
In Stock
$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt - Alternator

ES#547 - 5PK-1300 - Accessory Belt - Alternator - Replace your cracked or worn belt - Continental - Audi Volkswagen

Replace your cracked or worn belt We Price Match - Give Us A Call or Chat!

Brand:
Continental - Corporate Logo
ES#:
547
Mfg#:
5PK-1300
In Stock
$17.99

This product was last offered at the strikethrough price on
06-04-2026

$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Aluminum Magnetic Oil Drain Plug - Priced Each

ES#5341313 - HWU1014 - Aluminum Magnetic Oil Drain Plug - Priced Each - Includes crush washer. M14x1.5 - Rein - Audi Volkswagen

Includes crush washer. M14x1.5 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Rein - Corporate Logo
ES#:
5341313
Mfg#:
HWU1014
In Stock
$14.99 USD
Free Shipping
on orders $49 and up

Hex Bolt - Priced Each

ES#468612 - N10610001 - Hex Bolt - Priced Each - Install new hardware with your new parts. M8x90 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M8x90 Secures the alternator to the mounting bracket

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
468612
Mfg#:
N10610001
In Stock
$9.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Pipe O-Ring - Priced Each

ES#471191 - N90925001 - Coolant Pipe O-Ring - Priced Each - Provides seal from metal to plastic cooling line end fitting. 17x3 - Genuine Volkswagen Audi - Audi

Provides seal from metal to plastic cooling line end fitting. 17x3

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
471191
Mfg#:
N90925001
In Stock
17% off MSRP

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

$5.99

This product was last offered at the strikethrough price on
08-18-2026

$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Stage 1

Average gain of 45 horsepower and 60 lb-ft of torque on 91 Octane @ 16 PSI For vehicles with AEB engine code from the 2000 model year only

Brand:
Tunezilla - Corporate Logo
ES#:
3097321
Mfg#:
18T-20V-150-1
Ships in 7 Business Days
$389.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 1

Average gain of 38 horsepower and 69 lb-ft of torque on 91 Octane @ 18 PSI For vehicles with ATW & AWM engine codes only

Brand:
Tunezilla - Corporate Logo
ES#:
3097325
Mfg#:
18T-20V-170-1
Ships in 7 Business Days
$389.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Leak Detection Pump

ES#452225 - 8K0906271 - Leak Detection Pump - Tests the fueling system for leaks - Genuine Volkswagen Audi - Audi

Tests the fueling system for leaks Up to production date 3/5/2012

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
452225
Mfg#:
8K0906271
Ships in 1-2 days
8% off MSRP

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

$425.00

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

$388.99 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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