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Audi B5 A4 Quattro 1.8T

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Audi B5 A4 Quattro 1.8T Engine Parts & Accessories

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Oil Cooler Replacement Kit - Stage 1

ES#2718902 - 068117021Bkt - Oil Cooler Replacement Kit - Stage 1 - Everything you need to replace your leaking oil cooler - Assembled By ECS - Audi

Everything you need to replace your leaking oil cooler 10X Entries For Our 25th Anniversary Sweepstakes!
Up to VIN 8D-X-199999, split is in the 1999 model year

Brand:
Assembled By ECS - Corporate Logo
ES#:
2718902
Mfg#:
068117021BKT
Back Ordered
ON SALE! SAVE 10%
$95.47

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

$85.75 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Alternator - 90 Amps

ES#259920 - al0725xKt - Remanufactured Alternator - 90 Amps - Includes a $78 refundable core charge - Bosch - Audi Volkswagen

Includes a $78 refundable core charge 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
From VIN 8D-X-200001, split is in the 1999 model year. Please check current alternator for correct amps

Brand:
Bosch - Corporate Logo
ES#:
259920
Mfg#:
AL0725XKT
Back Ordered
$380.99

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

$372.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Auxiliary Fan Switch (87-93°C) - 3 Pin

ES#3625382 - 251959481K - Auxiliary Fan Switch (87-93C) - 3 Pin - Located on the lower side of the radiator, comes with paper gasket - FAE - Audi Volkswagen

Located on the lower side of the radiator, comes with paper gasket

Brand:
FAE - Corporate Logo
ES#:
3625382
Mfg#:
251959481K
Back Ordered
$18.99 USD
Free Shipping
on orders $49 and up
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

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

Radiator Hose - Lower

ES#4901043 - 4B0121055J - Radiator Hose - Lower - Connects the lower radiator port to the water pump and expansion tank - Meyle - Audi Volkswagen

Connects the lower radiator port to the water pump and expansion tank 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4901043
Mfg#:
4B0121055J
Special Order: No Guaranteed ETA
$44.99 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!
Updated push-down style coil pack

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

Oil Pressure Switch - 1.4 bar

ES#6497 - 068919081D - Oil Pressure Switch - 1.4 bar - Senses low engine oil pressure - Original Equipment Supplier - Audi Volkswagen

Senses low engine oil pressure Up to the 1999 model year

Brand:
Original Equipment Supplier - Corporate Logo
ES#:
6497
Mfg#:
068919081D
Back Ordered
$7.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Radiator Drain Plug

ES#250205 - 8D0121100 - Radiator Drain Plug - Used for quick removal of coolant - Original Equipment Supplier - Audi Volkswagen

Used for quick removal of coolant

Brand:
Original Equipment Supplier - Corporate Logo
ES#:
250205
Mfg#:
8D0121100
Back Ordered
$4.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Supply Line

ES#3551353 - 058145771C - Oil Supply Line - Connects the oil filter adapter to the turbo - Original Equipment Supplier - Audi Volkswagen

Connects the oil filter adapter to the turbo

Brand:
Original Equipment Supplier - Corporate Logo
ES#:
3551353
Mfg#:
058145771C
Back Ordered
$243.99

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

$236.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water Pump

ES#3149397 - 026121005L - Water Pump - Features a plastic impeller and includes a metal gasket - Rein - Audi Volkswagen

Features a plastic impeller and includes a metal gasket 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Rein - Corporate Logo
ES#:
3149397
Mfg#:
026121005L
Back Ordered
$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Expansion Tank

ES#2535174 - 8D0121403D - Coolant Expansion Tank - Includes integrated coolant level sensor - URO - Audi

Includes integrated coolant level sensor 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!
Up to VIN 8D-W-007799, split is in the 1998 model year

Brand:
URO - Corporate Logo
ES#:
2535174
Mfg#:
8D0121403D
Back Ordered
$17.99 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 From VIN 8D-X-200001, split is in the 1999 model year

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

Throttle Body

ES#2894966 - 078133063AG - Throttle Body - Cure stalling, poor idling and that CEL with this new throttle body - Vemo - Audi Volkswagen

Cure stalling, poor idling and that CEL with this new throttle body

Brand:
Vemo - Corporate Logo
ES#:
2894966
Mfg#:
078133063AG
Special Order: No Guaranteed ETA
$657.99 USD
Free Shipping
on orders $49 and up
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
07-29-2026

$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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