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Audi B5 S4 2.7T

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Audi B5 S4 2.7T Engine Parts & Accessories

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Diverter Valve

ES#5492288 - 06A145710P - Diverter Valve - Direct OE replacement pneumatic bypass valve to cure boost leaks, restore lost power, and eliminate that notorious deceleration "honk." - Febi - Audi Volkswagen

Direct OE replacement pneumatic bypass valve to cure boost leaks, restore lost power, and eliminate that notorious deceleration "honk." Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Febi - Corporate Logo
ES#:
5492288
Mfg#:
06A145710P
Special Order: No Guaranteed ETA
$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Control Unit

ES#2586581 - 8D0997551DXKT - Engine Control Unit - Price includes a $300 core charge - Genuine Volkswagen Audi - Audi

Price includes a $300 core charge Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Manual transmission up to VIN 8D-Y-200000, split is in the 2000 model year

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2586581
Mfg#:
8D0997551DXKT
Back Ordered
$1455.99 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Remanufactured Starter

ES#2531684 - 078911023DXKT - Remanufactured Starter - Price includes $80 refundable core charge - Genuine Volkswagen Audi - Audi Volkswagen

Price includes $80 refundable core charge Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
For vehicles that came with Bosch starters - Please check existing part # before ordering

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2531684
Mfg#:
078911023DXKT
Back Ordered
$717.99

This product was last offered at the strikethrough price on
08-31-2026

$691.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Complete Engine Mount Kit

ES#2587617 - 8D0199339PKT1 - Complete Engine Mount Kit - Restore a smooth running engine with new mounts and hardware - Genuine Volkswagen Audi - Audi

Restore a smooth running engine with new mounts and hardware Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2587617
Mfg#:
8D0199339PKT1
Back Ordered
$520.99

This product was last offered at the strikethrough price on
08-31-2026

$503.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

JE Forged Stroker Piston Sets - 83mm Bore

ES#4883055 - JE-PVD-2 - JE Forged Stroker Piston Sets - 83mm Bore - Increased displacement to 3.0 liters is accomplished by using a larger 92.8mm stroke crankshaft and 154X21 connecting rod. - Integrated Engineering - Audi

Increased displacement to 3.0 liters is accomplished by using a larger 92.8mm stroke crankshaft and 154X21 connecting rod. Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Requires Audi factory 3.0L 30V (AVK) crankshaft & IE 154x21 Forged Connecting Rods

Brand:
Integrated Engineering - Corporate Logo
ES#:
4883055
Mfg#:
JE-PVD-2
Back Ordered
$1529.99 USD
Free Shipping
on orders $49 and up

Cat-Back Exhaust System

ES#2613791 - 16769 - Cat-Back Exhaust System - 2.5" stainless steel with dual 3.5" polished stainless tips - Magnaflow - Audi

2.5" stainless steel with dual 3.5" polished stainless tips Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Avant models only

Brand:
Magnaflow - Corporate Logo
ES#:
2613791
Mfg#:
16769
Back Ordered
$1196.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Oil Filter - Priced Each

ES#3970157 - 078115561J - Oil Filter - Priced Each - Keep debris out of your oil and keep your engine running healthily - Meyle - Audi Volkswagen

Keep debris out of your oil and keep your engine running healthily 5X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
3970157
Mfg#:
078115561J
Back Ordered
$28.99 USD
Free Shipping
on orders $49 and up

Crankcase Breather Gasket

ES#11826 - 078103547f - Crankcase Breather Gasket - Seals the crankcase breather to the engine block - Original Equipment Supplier - Audi

Seals the crankcase breather to the engine block Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Original Equipment Supplier - Corporate Logo
ES#:
11826
Mfg#:
078103547F
Back Ordered
6% off MSRP

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

$48.99

This product was last offered at the strikethrough price on
10-27-2026

$45.99 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 Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

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

Supertech Stainless Steel Valve Kit

ES#4315245 - st-aivn-1106s2KT - Supertech Stainless Steel Valve Kit - +1mm oversized valve head diameter, single groove keeper setup for high RPM use - Supertech - Audi

+1mm oversized valve head diameter, single groove keeper setup for high RPM use Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
*Oversized valves require extra machine work to the cylinder head.*

Brand:
Supertech - Corporate Logo
ES#:
4315245
Mfg#:
ST-AIVN-1106S2KT
Back Ordered
$1202.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

VW | Intake Hose, air filter

ES#4859812 - 078129627P - VW | Intake Hose, air filter - Vaico - Audi

Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
4859812
Mfg#:
078129627P
Special Order: No Guaranteed ETA
$63.99 USD
Free Shipping
on orders $49 and up

Vacuum Check Valve

ES#2878682 - 078611933B - Vacuum Check Valve - Multiple line check valve that sits in the back of the intake manifold - Vaico - Audi

Multiple line check valve that sits in the back of the intake manifold Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
We Price Match - Give Us A Call or Chat!
Automatic Transmission Vehicles - Up To VIN 8D-1-053000, Split is in the 2001 model year - Manual Transmission Vehicles - Works on all model years

Brand:
Vaico - Corporate Logo
ES#:
2878682
Mfg#:
078611933B
Special Order: No Guaranteed ETA
$16.99 USD
Free Shipping
on orders $49 and up

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 Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

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

Shouldered Hex Nut - Priced Each

Install new hardware with your new parts. M8 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
Used to secure the engine mounts (upper position)

Brand:
Bremmen Parts - Corporate Logo
ES#:
4992163
Mfg#:
N01508315
Special Order: No Guaranteed ETA
ON SALE! SAVE 46%
$2.99

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

$1.62 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat - 87C

Prevent overheating and premature engine wear 10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

Brand:
Bremmen Parts - Corporate Logo
ES#:
4940301
Mfg#:
078121113F
Special Order: No Guaranteed ETA
ON SALE! SAVE 29%
$16.99

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

$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Alternator - 120 Amps

Includes a $250 refundable core charge Earn 5% back in ECS Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply
For cars that came with Bosch alternators. Please check existing alternator part number before ordering

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
2580828
Mfg#:
038903018FXKT
Back Ordered
$1001.99

This product was last offered at the strikethrough price on
08-31-2026

$976.99 USD
Free Shipping
on orders $49 and up
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.

ECS Tuning is not affiliated with any automobile manufacturers.
Manufacturer names and/or part numbers are used only for identification purposes.

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