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BMW E39 525i M54 2.5L

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BMW E39 525i M54 2.5L Performance Engine Parts

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Boost Cooler Stage 2 Progressive Water/Methanol Injection Kit

ES#4350144 - 20010-BRD - Boost Cooler Stage 2 Progressive Water/Methanol Injection Kit - Engine mounted, stainless steel braided line, 4AN fittings - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Engine mounted, stainless steel braided line, 4AN fittings affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4350144
Mfg#:
20010-BRD
In Stock at Vendor
$625.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

High Flow Water-Methanol Solenoid Upgrade - Quick-Connect Fittings

ES#4147674 - SN0-40060 - High Flow Water-Methanol Solenoid Upgrade - Quick-Connect Fittings - Robust protection for your WMI installation to ensure peace of mind - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Robust protection for your WMI installation to ensure peace of mind affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4147674
Mfg#:
SN0-40060
In Stock
$73.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turner Baffled Oil Catch Can - Standard Flow 8oz

ES#4369815 - 022798TMS01-02 - Turner Baffled Oil Catch Can - Standard Flow 8oz - A 4 chamber, baffled oil catch can with a bottom drain option - Turner Motorsport - BMW

A 4 chamber, baffled oil catch can with a bottom drain option affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4369815
Mfg#:
022798TMS01-02
Ships on Jul 1, 2026
Auto Notify
ON SALE! SAVE 25%
$213.99

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

$160.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Injen X-Pedal Pro Black Edition Throttle Controller - BMW

ES#4304635 - PT0008B - Injen X-Pedal Pro Black Edition Throttle Controller - BMW - Tune out the delayed throttle response from the factory with Injens X-Pedal Pro Black Edition and revamp your driving experience! - Injen - BMW MINI

Tune out the delayed throttle response from the factory with Injen’s X-Pedal Pro Black Edition and revamp your driving experience! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Injen - Corporate Logo
ES#:
4304635
Mfg#:
PT0008B
In Stock at Vendor
ON SALE! SAVE 15%
$243.99

This product was last offered at the strikethrough price on
05-15-2026

$207.19 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Density Line Performance Transmission Mount Set

ES#3143399 - 034-509-4050-SD - Density Line Performance Transmission Mount Set - Increase performance and durability without sacrificing comfort - an ECS Tuning exclusive! - 034Motorsport - BMW

Increase performance and durability without sacrificing comfort - an ECS Tuning exclusive! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3143399
Mfg#:
034-509-4050-SD
In Stock
$66.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

AEM V3 Water/Methanol Injector Kit (Qty 2)

ES#4307641 - 30-3313 - AEM V3 Water/Methanol Injector Kit (Qty 2) - Swappable swirl generators for 250/500/1000cc configurations! - AEM Electronics - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Swappable swirl generators for 250/500/1000cc configurations! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
AEM Electronics - Corporate Logo
ES#:
4307641
Mfg#:
30-3313
In Stock
$110.99

This product was last offered at the strikethrough price on
03-31-2026

$108.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Supersprint Tubolare Long-Tube Performance Headers

ES#3024734 - 785501 - Supersprint Tubolare Long-Tube Performance Headers - More flow for less restrictions, don't let your exhaust be the weak point of power - Supersprint - BMW

More flow for less restrictions, don't let your exhaust be the weak point of power affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supersprint - Corporate Logo
ES#:
3024734
Mfg#:
785501
In Stock
$1678.99 USD
Free Shipping

ECS Tuning Baffled Oil Catch Can - 6oz

ES#4369811 - 003779ECS05-01 - ECS Tuning Baffled Oil Catch Can - 6oz - Capture harmful oil vapors and keep your intake tract clean. Now featuring an easy to empty drain plug! - ECS - Audi BMW Volkswagen MINI

Capture harmful oil vapors and keep your intake tract clean. Now featuring an easy to empty drain plug! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For use with custom plumbing and ECS universal mounting bracket kit

Brand:
ECS - Corporate Logo
ES#:
4369811
Mfg#:
003779ECS05-01
In Stock
ON SALE! SAVE 46%
$233.99

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

$126.78 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Supersprint Section 1 Metallic Sport Cats

ES#3054658 - 785502 - Supersprint Section 1 Metallic Sport Cats - A more free flowing option - Supersprint - BMW

A more free flowing option affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supersprint - Corporate Logo
ES#:
3054658
Mfg#:
785502
Ships in 3 Business Days
$3260.99 USD
Free Shipping

E39 525/528 Luft-Technik Intake System

ES#4900070 - 054268LA11 - E39 525/528 Luft-Technik Intake System - Increase air flow and add a growling induction noise to bring back the excitement of driving your E39! - ECS - BMW

Increase air flow and add a growling induction noise to bring back the excitement of driving your E39! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
4900070
Mfg#:
054268LA11
Ships in 10 Business Days
Auto Notify
ON SALE! SAVE 10%
$399.99

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

$359.99 USD
Free Shipping

Turner Motorsport Double Wall Slash Cut Exhaust Tip - 2.75 Inlet - 3.5 OD - Stepped Left - Titanium Black Chrome

ES#4146846 - 026732TMS03-10 - Turner Motorsport Double Wall Slash Cut Exhaust Tip - 2.75 Inlet - 3.5 OD - Stepped Left - Titanium Black Chrome - Left - Titanium Black Chrome Slash Cut Exhaust Tip - 2.75 Inlet - 3.5 OD - Turner Motorsport - BMW MINI

Left - Titanium Black Chrome Slash Cut Exhaust Tip - 2.75 Inlet - 3.5 OD affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Not vehicle specific. You MUST measure prior to purchasing!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4146846
Mfg#:
026732TMS03-10
In Stock
ON SALE! SAVE 22%
$136.99

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

$106.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

-10AN ORB X 3/4" Hose Barb Fitting Assembly - Priced Each

ES#3187875 - 003779ECS10 - -10AN ORB X 3/4" Hose Barb Fitting Assembly - Priced Each - Universal fitting for ECS Tuning Catch can to use a 3/4" Hose - ECS - Audi BMW Volkswagen MINI

Universal fitting for ECS Tuning Catch can to use a 3/4" Hose affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
3187875
Mfg#:
003779ECS10
In Stock
ON SALE! SAVE 35%
$38.99

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

$25.34 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Upgraded Valve Stem Seal Kit

ES#4346287 - vs-vbm6-6cylKT - Upgraded Valve Stem Seal Kit - Includes all the valve stems needed for repairing, replacing, or upgrading your BMW's valves and stem seals! - Supertech - BMW

Includes all the valve stems needed for repairing, replacing, or upgrading your BMW's valves and stem seals! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supertech - Corporate Logo
ES#:
4346287
Mfg#:
VS-VBM6-6CYLKT
In Stock
$27.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

3.5" Universal Exhaust Tip w/ Brushed Finish - Priced Each

ES#4039313 - 026374TMS04-01 - 3.5" Universal Exhaust Tip w/ Brushed Finish - Priced Each - Stainless Steel exhaust tip featuring a 2.5" Inlet & a 3.5" Single Wall, Straight Cut Outlet - Turner Motorsport - BMW MINI

Stainless Steel exhaust tip featuring a 2.5" Inlet & a 3.5" Single Wall, Straight Cut Outlet affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Not vehicle specific. You MUST measure prior to purchasing!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4039313
Mfg#:
026374TMS04-01
In Stock
ON SALE! SAVE 10%
$69.99

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

$62.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turner Motorsport Double Wall Slash Cut Exhaust Tip - 3.0 Inlet - 3.5 OD - Stepped Left - Brushed Stainless

ES#4146849 - 026732TMS06-16 - Turner Motorsport Double Wall Slash Cut Exhaust Tip - 3.0 Inlet - 3.5 OD - Stepped Left - Brushed Stainless - Left - Brushed Stainless Slash Cut Exhaust Tip - 3.0 Inlet - 3.5 OD - Turner Motorsport - BMW MINI

Left - Brushed Stainless Slash Cut Exhaust Tip - 3.0 Inlet - 3.5 OD affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Not vehicle specific. You MUST measure prior to purchasing!

Brand:
Turner Motorsport - Corporate Logo
ES#:
4146849
Mfg#:
026732TMS06-16
Ships on Jul 15, 2026
Auto Notify
ON SALE! SAVE 33%
$149.99

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

$99.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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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