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Audi B6 A4 Quattro 1.8T

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Audi B6 A4 Quattro 1.8T Engine Parts & Accessories

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Emissions Service Kit

ES#2219685 - 06A103245F - Emissions Service Kit - Complete PCV Kit for your engine - Assembled By ECS - Audi

Complete PCV Kit for your engine 10X Entries For Our 25th Anniversary Sweepstakes!
From VIN 8E-4-000001, split is in the 2004 model year - with 25mm relief valve

Brand:
Assembled By ECS - Corporate Logo
ES#:
2219685
Mfg#:
06A103245F
Back Ordered
ON SALE!
$563.57

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

$511.11 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Radiator Installation Kit

ES#3659151 - 4b3121276aktKT - Radiator Installation Kit - Install new hardware with your new radiator - Assembled By ECS - Audi

Install new hardware with your new radiator 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3659151
Mfg#:
4B3121276AKTKT
Back Ordered
$57.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Emissions Service Kit

ES#2219683 - 06A103213AM - Emissions Service Kit - Don't let a clogged PCV system ruin your engine - Assembled By ECS - Audi

Don't let a clogged PCV system ruin your engine 10X Entries For Our 25th Anniversary Sweepstakes!
From VIN 8E-4-000001, split is in the 2004 model year - with 20mm relief valve

Brand:
Assembled By ECS - Corporate Logo
ES#:
2219683
Mfg#:
06A103213AM
Back Ordered
ON SALE! SAVE 10%
$485.99

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

$439.45 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Street Sport Transmission Mount – 50 Durometer

ES#4830808 - CTS-TM-AUDI4-50D - Street Sport Transmission Mount 50 Durometer - A significant upgrade to performance and feel over the stock mount. - CTS - Audi

A significant upgrade to performance and feel over the stock mount. Early B6 A4 w/ 5-Speed Manual Transmissions only.

Brand:
CTS - Corporate Logo
ES#:
4830808
Mfg#:
CTS-TM-AUDI4-50D
Special Order: No Guaranteed ETA
$84.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

JE Pistons 9.25:1 Kit Set Of 4 Pistons

ES#4810539 - 295743 - JE Pistons 9.25:1 Kit Set Of 4 Pistons - Equip your engine with the best-forged pistons. - JE Piston - Audi

Equip your engine with the best-forged pistons.

Brand:
JE Piston - Corporate Logo
ES#:
4810539
Mfg#:
295743
Back Ordered
$899.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Fuel Filter

ES#3559529 - 8E0201511J - Fuel Filter - With pressure regulator - Kolbenschmidt - Audi

With pressure regulator Up to VIN 8E-5-065000, split is in the 2005 model year

Brand:
Kolbenschmidt - Corporate Logo
ES#:
3559529
Mfg#:
8E0201511J
Back Ordered
$48.99

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

$47.99 USD
Free Shipping
on orders $49 and up

Mahle Performance Piston Set

ES#2794055 - H18TAUD287209I12 - Mahle Performance Piston Set - Includes rings, wire locks, and wrist pins - 81.5mm bore, 8.5:1 CR, 86.4mm stroke (stock) - Mahle - Audi Volkswagen

Includes rings, wire locks, and wrist pins - 81.5mm bore, 8.5:1 CR, 86.4mm stroke (stock) *For use with 20mm wrist pin connecting rods*

Brand:
Mahle - Corporate Logo
ES#:
2794055
Mfg#:
H18TAUD287209I12
Back Ordered
$955.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coil - Priced Each

ES#3979005 - 06C905115M - Ignition Coil - Priced Each - Keep your engine running smooth and looking good! - Meyle - Audi Volkswagen

Keep your engine running smooth and looking good! 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
3979005
Mfg#:
06C905115M
Special Order: No Guaranteed ETA
$33.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Upper Radiator Mount - Priced Each

ES#2587497 - 4B3121276A - Upper Radiator Mount - Priced Each - Stabilizes the radiator within the core support - OE Aftermarket - Audi

Stabilizes the radiator within the core support

Brand:
OE Aftermarket - Corporate Logo
ES#:
2587497
Mfg#:
4B3121276A
Back Ordered
$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Lower Radiator Mount - Priced Each

ES#2587495 - 4B3121275 - Lower Radiator Mount - Priced Each - Stabilizes the radiator within the core support - OE Aftermarket - Audi

Stabilizes the radiator within the core support

Brand:
OE Aftermarket - Corporate Logo
ES#:
2587495
Mfg#:
4B3121275
Back Ordered
$13.99

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

$12.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Supply Hose

ES#4039683 - 8E1819371P - Coolant Supply Hose - Supplies coolant to provide heat for the heater core - Vaico - Audi

Supplies coolant to provide heat for the heater core We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4039683
Mfg#:
8E1819371P
Special Order: No Guaranteed ETA
$67.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Return Hose

ES#4055340 - 8E1819373P - Coolant Return Hose - Returns coolant from the heater core - Vaico - Audi

Returns coolant from the heater core We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4055340
Mfg#:
8E1819373P
Special Order: No Guaranteed ETA
$67.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Diverter Valve

ES#2878542 - 06A145710P - Diverter Valve - Cure the boost leak and restore power - Vaico Q+ - Audi Volkswagen

Cure the boost leak and restore power

Brand:
Vaico Q+ - Corporate Logo
ES#:
2878542
Mfg#:
06A145710P
Special Order: No Guaranteed ETA
$62.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Intercooler - Right

ES#2901763 - 8E0145806M - Intercooler - Right - Cools the charge air for your engine - Vemo - Audi

Cools the charge air for your engine

Brand:
Vemo - Corporate Logo
ES#:
2901763
Mfg#:
8E0145806M
Special Order: No Guaranteed ETA
$105.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Supertech Performance Valvetrain Upgrade Kit

This high-performance engine kit combines an upgraded dual-spring valvetrain, Inconel and nitrided valves, a top-end gasket set, and premium tri-metal race main bearings. 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
5481342
Mfg#:
SPRK-AUDI18VKT
Back Ordered
Auto Notify
$1702.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BorgWarner EFR 6258-G Turbo - 0.80 A/R, T4 Twin Scroll

EFR delivers quick boost response, powerful performance and reliable durability - 0.80 A/R, T4 Twin Flow Flange, 49mm Compressor Inducer Dia, 62mm Compressor Wheel O.D., 58mm Turbine Wheel O.D. *To be used with custom turbocharger applications only - T4 flange manifold, custom fueling, tuning/software, and internals necessary*

Brand:
BorgWarner - Corporate Logo
ES#:
4143465
Mfg#:
11589880036
Back Ordered
22% off MSRP

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

$3723.99

This product was last offered at the strikethrough price on
07-27-2026

$2898.99 USD
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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Manufacturer names and/or part numbers are used only for identification purposes.

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