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Audi B5 S4 2.7T Engine Parts & Accessories

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3in. To 3.5in. Silicone Transition Coupler - Black

ES#4752879 - MMCP-3035B - 3in. To 3.5in. Silicone Transition Coupler - Black - High-quality silicone transition coupler for use with air intakes, intercooler piping, and more! - Mishimoto - Audi BMW Volkswagen Mercedes Benz MINI

High-quality silicone transition coupler for use with air intakes, intercooler piping, and more! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Mishimoto - Corporate Logo
ES#:
4752879
Mfg#:
MMCP-3035B
In Stock
$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Expansion Tank Cap - Black

ES#3690266 - 5Q0121321 - Expansion Tank Cap - Black - Keep proper pressure in your coolant system - Vaico - Audi Volkswagen Porsche

Keep proper pressure in your coolant system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Vaico - Corporate Logo
ES#:
3690266
Mfg#:
5Q0121321
Back Ordered
$18.99

This product was last offered at the strikethrough price on
04-02-2026

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

Radiator Stop-Leak - 250mL

ES#3514566 - 20132 - Radiator Stop-Leak - 250mL - Put a stop to that coolant leak! - Liqui-Moly - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Put a stop to that coolant leak! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
3514566
Mfg#:
20132
In Stock
ON SALE! SAVE 10%
$11.49

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

$10.34 USD
Free Shipping
on orders $49 and up

Magnetic Fender Cover & LED Telescoping Mirror With Telescoping Magnet & 2 Magnetic Parts Trays

ES#4849778 - 006192ECS01A2KT - Magnetic Fender Cover & LED Telescoping Mirror With Telescoping Magnet & 2 Magnetic Parts Trays - This kit of accessories that should be in every toolbox includes a telescoping magnet, 2 magnetic parts trays, an ECS magnetic fender cover and a telescoping LED mirror! - Enthusiast Bundles - Audi BMW Volkswagen Mercedes Benz MINI Porsche

This kit of accessories that should be in every toolbox includes a telescoping magnet, 2 magnetic parts trays, an ECS magnetic fender cover and a telescoping LED mirror! Don't See A Bundle You Want - Give Us A Call Or Chat - We Will Make One! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Enthusiast Bundles - Corporate Logo
ES#:
4849778
Mfg#:
006192ECS01A2KT
Ships in 3 Business Days
ON SALE! SAVE 28%
$122.99

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

$89.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Lithium US 4.3 Amp 12 Volt Battery Charger - CTEK

ES#4810341 - 56-926 - Lithium US 4.3 Amp 12 Volt Battery Charger - CTEK - The LITHIUM US is a versatile, microprocessor-controlled charger designed for recharging and maintaining Lithium-Iron (LiFePO4) batteries, featuring automatic operation, and multiple safety protections. - CTEK - Audi BMW Volkswagen Mercedes Benz MINI Porsche

The LITHIUM US is a versatile, microprocessor-controlled charger designed for recharging and maintaining Lithium-Iron (LiFePO4) batteries, featuring automatic operation, and multiple safety protections. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CTEK - Corporate Logo
ES#:
4810341
Mfg#:
56-926
Back Ordered
$137.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Boost Cooler Stage 2.5 Progressive Water/Methanol Injection Kit - no tank

Unlock 50-70 HP on your boosted vehicle while decreasing your air temps by up to 100 degrees! Stainless Steel Braided Line, 4AN Fittings, no tank included! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4608739
Mfg#:
SN0-210-BRD-T
In Stock at Vendor
$687.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Schwaben 7mm Hose Clamp Flexible Driver

ES#2816859 - 010658SCH01A - Schwaben 7mm Hose Clamp Flexible Driver - Some jobs require being flexible, Hard to get straight onto that hose clamp nut? No problem - Schwaben - Audi BMW Volkswagen Mercedes Benz MINI Porsche
ECS Tuning recommends this product.

Some jobs require being flexible, Hard to get straight onto that hose clamp nut? No problem affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Schwaben - Corporate Logo
ES#:
2816859
Mfg#:
010658SCH01A
Back Ordered
Auto Notify
ON SALE! SAVE 30%
$22.99

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

$16.09 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Harmonic Balancer Puller and Installer Set

ES#4372117 - W89711 - Harmonic Balancer Puller and Installer Set - For removal and installation of harmonic balancers on most automotive and light truck applications. - Performance Tool - Audi BMW Volkswagen Mercedes Benz MINI Porsche

For removal and installation of harmonic balancers on most automotive and light truck applications. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Performance Tool - Corporate Logo
ES#:
4372117
Mfg#:
W89711
Ships in 1 Business Day
$166.09 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Leichtlauf High Tech Engine Oil (5W-40) - 20 Liters

ES#4375825 - 20122 - Leichtlauf High Tech Engine Oil (5W-40) - 20 Liters - Fully synthetic, all-season motor oil for superior performance and long engine life - Liqui-Moly - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Fully synthetic, all-season motor oil for superior performance and long engine life affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Liqui-Moly - Corporate Logo
ES#:
4375825
Mfg#:
20122
Ships in 1-2 days
30% off MSRP

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

$315.95

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

$220.00 USD
Free Shipping
on orders $49 and up

BMS Billet Water/Methanol Injection Tank Cap With Safety Check Valve

ES#4714530 - BMSWMITC - BMS Billet Water/Methanol Injection Tank Cap With Safety Check Valve - The Burger Motorsports custom billet Water/Methanol Injection (WMI) cap includes an integrated heavy-duty check valve to let much-needed air in and prevent dangerous WMI vapor/fumes and liquid from getting out! - Burger Motorsports - Audi BMW Volkswagen Mercedes Benz MINI Porsche

The Burger Motorsports custom billet Water/Methanol Injection (WMI) cap includes an integrated heavy-duty check valve to let much-needed air in and prevent dangerous WMI vapor/fumes and liquid from getting out! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Burger Motorsports - Corporate Logo
ES#:
4714530
Mfg#:
BMSWMITC
In Stock
$59.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

8 QT Dispenser with Lid and Cap

ES#2944323 - LIS19702 - 8 QT Dispenser with Lid and Cap - Keep your oils clean and ready to dispense - Lisle - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Keep your oils clean and ready to dispense affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Lisle - Corporate Logo
ES#:
2944323
Mfg#:
LIS19702
Ships in 1 Business Day
$28.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

JB4 OBDII Cable Replacement - 4 Position (Cable Only)

ES#4940110 - JB4-OBDII-4P7FCA - JB4 OBDII Cable Replacement - 4 Position (Cable Only) - Version 1. - Burger Motorsports - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Version 1. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Burger Motorsports - Corporate Logo
ES#:
4940110
Mfg#:
JB4-OBDII-4P7FCA
In Stock
$25.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Boost X UltraSafe Lithium 1250 Amp Jump Starter - NOCO

ES#4389648 - GBX45 - Boost X UltraSafe Lithium 1250 Amp Jump Starter - NOCO - X for Extreme - Boost X is the next generation in jump packs with an all-new design and more powerful jump starts. This 12V battery jumper will jump gas vehicles up to 6.5 and diesel engines up to 4.0L. - NOCO - Audi BMW Volkswagen Mercedes Benz MINI Porsche

X for Extreme - Boost X is the next generation in jump packs with an all-new design and more powerful jump starts. This 12V battery jumper will jump gas vehicles up to 6.5 and diesel engines up to 4.0L. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
NOCO - Corporate Logo
ES#:
4389648
Mfg#:
GBX45
Ships in 8 Business Days
22% off MSRP

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

$159.99

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

$124.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Oil Reminder Sticker - Pack Of 10

ES#2808806 - 009012ecs0110KT - Oil Reminder Sticker - Pack Of 10 - Be sure to remind yourself when it will be time to order again from ECS Tuning - ECS - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Be sure to remind yourself when it will be time to order again from ECS Tuning affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2808806
Mfg#:
009012ECS0110KT
In Stock
ON SALE! SAVE 40%
$25.99

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

$15.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

80 Piece Vacuum Cap Assortment

ES#3613632 - TIT45252 - 80 Piece Vacuum Cap Assortment - Great for capping unused vacuum lines. - Titan - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Great for capping unused vacuum lines. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Titan - Corporate Logo
ES#:
3613632
Mfg#:
TIT45252
In Stock
$14.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Allen Bolt - Priced Each

ES#467364 - N10080105 - Allen Bolt - Priced Each - Install new hardware with your new parts. M6x25 - Genuine Volkswagen Audi - Audi Volkswagen

Install new hardware with your new parts. M6x25 affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Secures the intake manifold to the cylinder head.

Brand:
Genuine Volkswagen Audi - Corporate Logo
ES#:
467364
Mfg#:
N10080105
In Stock
3% off MSRP

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

$3.38

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

$3.28 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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