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Audi B5 A4 Quattro 1.8T

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Audi B5 A4 Quattro 1.8T Performance Engine Parts

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Throttle Body Adapter

ES#4029400 - 034-112-1000 - Throttle Body Adapter - Includes gaskets and all hardware needed. - 034Motorsport - Audi Volkswagen

Includes gaskets and all hardware needed. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
4029400
Mfg#:
034-112-1000
Ships in 2 Business Days
ON SALE! SAVE 10%
$129.00

This product was last offered at the strikethrough price on
06-28-2026

$116.10 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Forge Splitter Valve Blanking Cap - Black

ES#3419995 - FMSPLCAPB - Forge Splitter Valve Blanking Cap - Black - Replace your lost blanking cap on your Forge Splitter valve (FMDVSPLTR) - Forge - Audi Volkswagen

Replace your lost blanking cap on your Forge Splitter valve (FMDVSPLTR) affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Forge - Corporate Logo
ES#:
3419995
Mfg#:
FMSPLCAPB
Ships in 3 Business Days
ON SALE! SAVE 11%
$25.99

This product was last offered at the strikethrough price on
07-01-2026

$23.20 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hobb's Switch

ES#3520735 - ACC-HOBBS - Hobb's Switch - 15 PSI - Fuel-It! - Audi BMW Volkswagen Mercedes Benz MINI Porsche

15 PSI affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Fuel-It! - Corporate Logo
ES#:
3520735
Mfg#:
ACC-HOBBS
Ships on Jul 22, 2026
$55.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Port Injection Plugs

ES#4690214 - PRINJPLGS - Port Injection Plugs - Use these in replacement of any standard short body EV14 style injector. - Precision Raceworks - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Use these in replacement of any standard short body EV14 style injector. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Precision Raceworks - Corporate Logo
ES#:
4690214
Mfg#:
PRINJPLGS
Ships in 9 Business Days
Starting at $9.99 USD
Customize
Free Shipping
on orders $49 and up

Performance Snub Mount With Bracket

ES#3432388 - 034-509-2001 - Performance Snub Mount With Bracket - Greatly reduces unwanted engine movement with only a slight increase in vibration - 034Motorsport - Audi

Greatly reduces unwanted engine movement with only a slight increase in vibration affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For AWM engine code only

Brand:
034Motorsport - Corporate Logo
ES#:
3432388
Mfg#:
034-509-2001
Ships in 2 Business Days
ON SALE! SAVE 10%
$118.00

This product was last offered at the strikethrough price on
06-28-2026

$106.20 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Diverter Valve - Black

ES#2917783 - DV20 - Diverter Valve - Black - Keep your turbo boosting like it should - Euro Sport Acc - Audi Volkswagen

Keep your turbo boosting like it should affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Euro Sport Acc - Corporate Logo
ES#:
2917783
Mfg#:
DV20
Ships in 3 Business Days
$99.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Water/Methanol Nozzle - 2.5GPH

ES#4476204 - SN0-N0250 - Water/Methanol Nozzle - 2.5GPH - Snow Performance Hyper-Sonic water-methanol injection nozzle - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Snow Performance Hyper-Sonic water-methanol injection nozzle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4476204
Mfg#:
SN0-N0250
In Stock at Vendor
$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

No-Toil Foam Filter Oil

ES#3546630 - nt0-aerosolKT - No-Toil Foam Filter Oil - For use with ITG foam filters - No T-oil - Audi BMW Volkswagen Mercedes Benz MINI Porsche

For use with ITG foam filters affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
No T-oil
ES#:
3546630
Mfg#:
NT0-AEROSOLKT
In Stock
$17.00

This product was last offered at the strikethrough price on
05-27-2026

$16.99 USD
Free Shipping
on orders $49 and up

FP34 Surge Tank Hardware Kit - Nipple Connections

ES#3419781 - 034-106-Z024 - FP34 Surge Tank Hardware Kit - Nipple Connections - Allows for connections to factory style nipple connections for 5/16" or 8mm hose - 034Motorsport - Audi Volkswagen

Allows for connections to factory style nipple connections for 5/16" or 8mm hose affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3419781
Mfg#:
034-106-Z024
Ships in 2 Business Days
ON SALE! SAVE 10%
$91.00

This product was last offered at the strikethrough price on
06-28-2026

$81.90 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Boost Switch

ES#2826277 - 81014 - Boost Switch - Adjustable (1-15 PSI) to engage at the appropriate amount of boost pressure for your application. - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Adjustable (1-15 PSI) to engage at the appropriate amount of boost pressure for your application. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
2826277
Mfg#:
81014
In Stock at Vendor
$36.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Forge Splitter Valve Blanking Cap - Alloy

ES#3419959 - FMSPLCAP - Forge Splitter Valve Blanking Cap - Alloy - Replace your lost blanking cap on your Forge Splitter valve (FMDVSPLTR and FMBSPLTR) - Forge - Audi Volkswagen

Replace your lost blanking cap on your Forge Splitter valve (FMDVSPLTR and FMBSPLTR) affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Forge - Corporate Logo
ES#:
3419959
Mfg#:
FMSPLCAP
Ships on Jul 28, 2026
ON SALE! SAVE 11%
$25.99

This product was last offered at the strikethrough price on
07-01-2026

$23.20 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Snub Mount with hardware

ES#2966506 - 001578ECS01AKT1 - Performance Snub Mount with hardware - Reduce driveline lash with a full polyurethane mount - Assembled By ECS - Audi

Reduce driveline lash with a full polyurethane mount affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For AWM engine code only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2966506
Mfg#:
001578ECS01AKT1
Ships in 1 day
ON SALE! SAVE 24%
$87.99

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

$67.26 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Performance Snub Mount with hardware

ES#2966505 - 001578ECS01AKT - Performance Snub Mount with hardware - Reduce driveline lash with a full polyurethane mount - Assembled By ECS - Audi

Reduce driveline lash with a full polyurethane mount affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For AEB & ATW engine code only

Brand:
Assembled By ECS - Corporate Logo
ES#:
2966505
Mfg#:
001578ECS01AKT
Ships in 1 day
ON SALE! SAVE 23%
$86.00

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

$66.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Optional Blue Spring R1 DV For 23-30 PSI. (Blue Springs Are Only Needed For Stage 3 Or Higher.)

ES#3021167 - Z1001791 - Optional Blue Spring R1 DV For 23-30 PSI. (Blue Springs Are Only Needed For Stage 3 Or Higher.) - DV100001 optional blue spring for 23-30 psi - APR - Audi Volkswagen

DV100001 optional blue spring for 23-30 psi Call In Or Chat For Best Price! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 5X Entries For Our 25th Anniversary Sweepstakes!

Brand:
APR - Corporate Logo
ES#:
3021167
Mfg#:
Z1001791
Ships in 5 Business Days
11% off MSRP

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

$35.99

This product was last offered at the strikethrough price on
07-06-2026

$31.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Billet 100 Micron Water Methanol Filter

ES#4608740 - SN0-38FIL - Billet 100 Micron Water Methanol Filter - 100 Micron Water-Methanol Filter - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

100 Micron Water-Methanol Filter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4608740
Mfg#:
SN0-38FIL
Special Order: No Guaranteed ETA
$61.99 USD
Free Shipping

More About Performance Engine Parts

Our name says it all. That's why ECS Tuning is dedicated to providing our customers with the broadest possible assortment of engine tuning options at a range of prices and options to fit any budget. Start small and grow your car into something special with performance engine upgrades from a company that has tuning in its name and its blood.

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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