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Audi B5 A4 FWD 1.8T Engine Parts & Accessories

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ES#3659371 - 078121121J - Thermostat Housing (Aluminum) - Aluminum design - Located on the front right of the engine block - URO - Audi Volkswagen

Aluminum design - Located on the front right of the engine block affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3659371
Mfg#:
078121121J
In Stock
$155.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#1073 - 0280160575sj - Fuel Pressure Regulator - 4 Bar - Commonly used in performance applications - Bosch - Audi Volkswagen

Commonly used in performance applications affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
1073
Mfg#:
0280160575SJ
In Stock
$52.99

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

$45.74 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#1895145 - G001770A2 - Fuel Additive - 90ML Gasoline additive used to clean your VW or Audi's fuel system - Genuine Volkswagen Audi - Audi Volkswagen

90ML Gasoline additive used to clean your VW or Audi's fuel system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
This item is classified as Hazardous Materials and requires special shipping and handling. We cannot ship this item out of the US or with priority shippi

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1895145
Mfg#:
G001770A2
In Stock
4% off MSRP

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

$12.29

This product was last offered at the strikethrough price on
06-09-2026

$11.78 USD
Free Shipping
on orders $49 and up
ES#2794385 - IERHVA1 - Forged H-Beam connecting rods - 144x20mm forged H-beam rods from Integrated Engineering. - Integrated Engineering - Audi Volkswagen

144x20mm forged H-beam rods from Integrated Engineering. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!
*To be used with aftermarket pistons with 20mm wrist pins*

Brand:
Integrated Engineering - Corporate Logo
ES#:
2794385
Mfg#:
IERHVA1
In Stock
$542.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3579230 - 3005 - G-Force III Electronic Boost Controller - G-Force II offers More Powerful Features, more Simplicity - Performance without the hassle! - Go Fast Bits - Audi Volkswagen

G-Force II offers More Powerful Features, more Simplicity - Performance without the hassle! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Go Fast Bits - Corporate Logo
ES#:
3579230
Mfg#:
3005
In Stock at Vendor
$412.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#1874205 - 06A121012G - Water Pump  - Keep your coolant flowing to prevent overheating - Genuine Volkswagen Audi - Audi Volkswagen

Keep your coolant flowing to prevent overheating affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
1874205
Mfg#:
06A121012G
In Stock
7% off MSRP

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

$192.99

This product was last offered at the strikethrough price on
02-18-2026

$179.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#550 - AF G001200 - G12+ Coolant - 1.5 Liter - Pink Pentosin SF Pentofrost coolant new updated G12 plus formula - Pentosin - Audi Volkswagen Porsche

Pink Pentosin SF Pentofrost coolant new updated G12 plus formula affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Pentosin - Corporate Logo
ES#:
550
Mfg#:
AF G001200
In Stock
$22.40 USD
Free Shipping
on orders $49 and up
ES#2864598 - 034-509-0007 - Density Line Street Density Motor Mount - priced each - Void-free and fluid-free, eliminating the slop associated with the factory mounts - 034Motorsport - Audi Volkswagen

Void-free and fluid-free, eliminating the slop associated with the factory mounts affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
2864598
Mfg#:
034-509-0007
In Stock
$128.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4858502 - B48-H6-L3 - Endurance Series AGM Battery - B48-H6-L3 - Designed for a wide range of demanding, high performance applications, this battery is reliable, long-lasting, and engineered for high shock and vibration applications. - Braille - Audi BMW Volkswagen Mercedes Benz Porsche

Designed for a wide range of demanding, high performance applications, this battery is reliable, long-lasting, and engineered for high shock and vibration applications. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Braille - Corporate Logo
ES#:
4858502
Mfg#:
B48-H6-L3
Ships in 5 Business Days
$398.99 USD
This product is lifetime replacement eligible Lifetime Replacement
ES#5338625 - 056059la08-4KT - ECS Performance Ignition Coils - Set Of Four - Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! - ECS - Audi Volkswagen

Designed to be a direct plug-and-play upgrade to factory coils, providing greater energy output, ensuring a stronger and more consistent spark! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For Vehicles with Engine Codes ATW and AEB (Bolt-In Style Ignition Coils)

Brand:
ECS - Corporate Logo
ES#:
5338625
Mfg#:
056059LA08-4KT
Ships in 4 Business Days
ON SALE! SAVE 15%
$139.99

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

$118.97 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3420790 - g013a8jm1kt5 - Coolant Flush Kit - Includes Schwaben coolant refill/air purge tool and 4.5 liters of G13 coolant. - Assembled By ECS - Audi Volkswagen

Includes Schwaben coolant refill/air purge tool and 4.5 liters of G13 coolant. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3420790
Mfg#:
G013A8JM1KT5
Ships in 2 Business Days
ON SALE! SAVE 18%
$181.99

This product was last offered at the strikethrough price on
01-03-2026

$149.57 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement
ES#3478518 - 03247 - Edge European Formula Full Synthetic Engine Oil (5w-40) - 5 Quart - Meets VAG 502.00/505.00 and Porsche A40 specifications - Castrol - Audi Volkswagen

Meets VAG 502.00/505.00 and Porsche A40 specifications affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Castrol - Corporate Logo
ES#:
3478518
Mfg#:
03247
In Stock
$72.58

This product was last offered at the strikethrough price on
05-19-2026

$59.55 USD
Free Shipping
on orders $49 and up
ES#4419107 - cts-ign-006KT - CTS High Performance Ignition Coil - Set Of Four - These are the perfect replacement or upgrade to your FSI/TSI/TFSI engine to keep it running at its peak performance. - CTS - Audi Volkswagen

These are the perfect replacement or upgrade to your FSI/TSI/TFSI engine to keep it running at it’s peak performance. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
To be used with 2.0T conversion plate only

Brand:
CTS - Corporate Logo
ES#:
4419107
Mfg#:
CTS-IGN-006KT
Ships in 8 Business Days
$119.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#252347 - 06A121011L - Water Pump - Featuring a metal impeller - Hepu - Audi Volkswagen

Featuring a metal impeller affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Hepu - Corporate Logo
ES#:
252347
Mfg#:
06A121011L
In Stock
$98.99

This product was last offered at the strikethrough price on
04-24-2026

$76.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#1892046 - 058145703JKT - K03 Turbocharger With ECS Installation Kit - Restore boost and get going! - BorgWarner - Audi Volkswagen

Restore boost and get going! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
BorgWarner - Corporate Logo
ES#:
1892046
Mfg#:
058145703JKT
Ships in 2 Business Days
$887.99 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.

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