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Audi A4 Engine Parts & Accessories

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Intake Manifold Gasket - Manifold To Head (Priced Each)

ES#253100 - 078129717A - Intake Manifold Gasket - Manifold To Head (Priced Each) - Gasket between lower intake manifold and cylinder head - Victor Reinz - Audi

Gasket between lower intake manifold and cylinder head

Brand:
Victor Reinz - Corporate Logo
ES#:
253100
Mfg#:
078129717A
Ships in 1-2 days
$3.99

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

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turbo Oil Line Gasket - Priced Each

ES#3139055 - 058145757C - Turbo Oil Line Gasket - Priced Each - Seals the oil return line to the turbocharger - Hudson - Audi Volkswagen

Seals the oil return line to the turbocharger

Brand:
Hudson - Corporate Logo
ES#:
3139055
Mfg#:
058145757C
Ships in 3 Business Days
$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

O-Ring - Priced Each (24x3)

ES#2602600 - N90380002 - O-Ring - Priced Each (24x3) - O-ring used in various areas on your European vehicle - Corteco - Audi

O-ring used in various areas on your European vehicle 24x3 O-ring that is seated between the hard coolant pipe and thermostat housing

Brand:
Corteco - Corporate Logo
ES#:
2602600
Mfg#:
N90380002
Back Ordered
$3.99

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

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump O-Ring

ES#4144993 - 06A121119 - Water Pump O-Ring - Ensure a proper seal when installing a new water pump. 53x4mm - Rein - Audi Volkswagen

Ensure a proper seal when installing a new water pump. 53x4mm 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
4144993
Mfg#:
06A121119
Back Ordered
$3.99

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

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Drain Plug

Used for quick removal of coolant

Brand:
JL Germany
ES#:
4044479
Mfg#:
8D0121100
Back Ordered
$3.99

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

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Cooling Hose Retaining Clip - Priced Each

ES#4941347 - 1J0121142 - Cooling Hose Retaining Clip - Priced Each - Secures the radiator hose flange in place. 32mm - Bremmen Parts - Audi Volkswagen

Secures the radiator hose flange in place. 32mm 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4941347
Mfg#:
1J0121142
Back Ordered
Auto Notify
ON SALE! SAVE 57%
$1.99

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

$0.86 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat Housing

ES#2207846 - 030121121B - Thermostat Housing - Located on the water pump assembly - URO - Audi Volkswagen

Located on the water pump assembly 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2207846
Mfg#:
030121121B
Ships in 1 Business Day
$7.13

This product was last offered at the strikethrough price on
06-12-2026

$2.20 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Cap

ES#2090873 - 06A103485F - Oil Cap - Clean up your engine bay with a new cap - MTC - Audi Volkswagen

Clean up your engine bay with a new cap

Brand:
MTC - Corporate Logo
ES#:
2090873
Mfg#:
06A103485F
Back Ordered
$2.03 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Flange Plug - Priced Each

ES#2815649 - 357121140 - Coolant Flange Plug - Priced Each - Clip and o-ring sold separately - Hamburg Tech - Audi Volkswagen

Clip and o-ring sold separately We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2815649
Mfg#:
357121140
Ships in 1 Business Day
$1.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Stage I Performance Chip - Fully Loaded

ES#2792692 - B8.520TSTG1CHP-4 - Stage I Performance Chip - Fully Loaded - Gains up to 57HP & 85TQ on 93 Octane, 85HP & 134TQ on E85 - APR - Audi

Gains up to 57HP & 85TQ on 93 Octane, 85HP & 134TQ on E85 Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
This upgrade must be performed at ECS Tuning's facility in Ohio.
From the 2013 model year.

Brand:
APR - Corporate Logo
ES#:
2792692
Mfg#:
B8.520TSTG1CHP-4
In Stock
ON SALE! SAVE 10%
$499.90

This product was last offered at the strikethrough price on
07-31-2026

$449.91 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Stage 1+ Performance Upgrade - Direct Port

ES#2918519 - b6a4stg1upgrdKT - Stage 1+ Performance Upgrade - Direct Port - Does not include injectors - Gains of up to 55 HP & 100 LB-FT torque on 93 octane! - APR - Audi

Does not include injectors - Gains of up to 55 HP & 100 LB-FT torque on 93 octane! Call In Or Chat For Best Price! 5X Entries For Our 25th Anniversary Sweepstakes!
This upgrade must be performed at ECS Tuning's facility in Ohio.
For existing Stage 1 customers upgrading to Stage 1+. Drive your vehicle to our location

Brand:
APR - Corporate Logo
ES#:
2918519
Mfg#:
B6A4STG1UPGRDKT
In Stock
ON SALE! SAVE 10%
$150.00

This product was last offered at the strikethrough price on
07-31-2026

$135.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Service Kit - With ECS Magnetic Drain Plug

ES#6902 - 058198001 - Oil Service Kit - With ECS Magnetic Drain Plug - Everything you need to perform an engine oil service - Assembled By ECS - Audi Volkswagen

Everything you need to perform an engine oil service 10X Entries For Our 25th Anniversary Sweepstakes!
Engine code AEB up to VIN 8D-X-199999, split is in the 1999 model year (with the original oil pan)

Brand:
Assembled By ECS - Corporate Logo
ES#:
6902
Mfg#:
058198001
In Stock
$116.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Cooling System Refresh Kit

ES#2762652 - 06E121111MKT2 - Cooling System Refresh Kit - Replace your thermostat and temp sensor with one kit! - Assembled By ECS - Audi

Replace your thermostat and temp sensor with one kit! 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
2762652
Mfg#:
06E121111MKT2
In Stock
$232.99

This product was last offered at the strikethrough price on
06-18-2026

$230.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Oil Service Kit - With ECS Magnetic Drain Plug

ES#261661 - PRMOIL2 - Oil Service Kit - With ECS Magnetic Drain Plug - Includes large Mann oil filter and Motul 5w-40 oil - Assembled By ECS - Audi Volkswagen

Includes large Mann oil filter and Motul 5w-40 oil 10X Entries For Our 25th Anniversary Sweepstakes!
Engine code AEB up to VIN 8D-X-199999, split is in the 1999 model year (with the original oil pan).

Brand:
Assembled By ECS - Corporate Logo
ES#:
261661
Mfg#:
PRMOIL2
In Stock
$62.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

40k Scheduled Service Kit

ES#4011 - B5A4V630V40KSK - 40k Scheduled Service Kit - Everything you need to perform 40k service. - Assembled By ECS - Audi

Everything you need to perform 40k service. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4011
Mfg#:
B5A4V630V40KSK
In Stock
ON SALE!
$212.99

This product was last offered at the strikethrough price on
02-26-2026

$212.02 USD
Free Shipping
This product is lifetime replacement eligible Partial 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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