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BMW E39 525i M54 2.5L Performance Engine & Drivetrain Parts

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ES#4144931 - SN0-310 - Stage 3 Boost Cooler (EFI - Port Injection) - Nylon Line - Brings true 2D mapped water-methanol injection delivery to your EFI (Electronic Fuel Injected) and forced induction vehicle - SnowPerformance - Audi BMW Volkswagen Mercedes Benz MINI Porsche

Brings true 2D mapped water-methanol injection delivery to your EFI (Electronic Fuel Injected) and forced induction vehicle affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
SnowPerformance - Corporate Logo
ES#:
4144931
Mfg#:
SN0-310
In Stock at Vendor
$729.99 USD
Free Shipping
on orders $49 and up
ES#2597315 - 12131712219KT - Ignition Service Kit - Everything you need to service your ignition system - Genuine BMW - BMW

Everything you need to service your ignition system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
2597315
Mfg#:
12131712219KT
In Stock
$723.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3621984 - 03005-HDTZ-D - Stage 3 Clutch Kit - FX300 - Upgraded clutch plate and Sprung Hub Segmented Kevlar Disc : Dampened Disc version For aftermarket Single Mass Flywheel - Clutch Masters - BMW

Upgraded clutch plate and Sprung Hub Segmented Kevlar Disc : Dampened Disc version For aftermarket Single Mass Flywheel affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Vehicles with S5D250G-TAJS Transmission (5-Speed with 10-Spline Input Shaft)
For Vehicles with 5-Speed Transmission and 10 Spline Input Shaft

Brand:
Clutch Masters - Corporate Logo
ES#:
3621984
Mfg#:
03005-HDTZ-D
Ships in 7 Business Days
15% off MSRP

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

$850.00

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

$722.99 USD
Free Shipping
on orders $49 and up
ES#3621983 - 03005-HDKV-R - Stage 2 Clutch Kit - FX200 - Upgraded clutch plate and kevlar disc : Rigid Disc version - Clutch Masters - BMW

Upgraded clutch plate and kevlar disc : Rigid Disc version affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Vehicles with S5D250G-TAJS Transmission (5-Speed with 10-Spline Input Shaft)
For Vehicles with 5-Speed Transmission and 10 Spline Input Shaft

Brand:
Clutch Masters - Corporate Logo
ES#:
3621983
Mfg#:
03005-HDKV-R
Ships in 7 Business Days
15% off MSRP

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

$850.00

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

$722.99 USD
Free Shipping
ES#4044097 - NEX20422 - Proton Fly-By-Wire Nitrous System - Choose your bottle size to add up to 150hp. This system includes a TPS Autolearn wide open throttle module for use with all electronic fuel injected vehicles, including those with "fly by wire" electronic driven throttle bodies. - Nitrous Express - BMW

Choose your bottle size to add up to 150hp. This system includes a TPS Autolearn wide open throttle module for use with all electronic fuel injected vehicles, including those with "fly by wire" electronic driven throttle bodies. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Nitrous Express - Corporate Logo
ES#:
4044097
Mfg#:
NEX20422
Ships in 2 Business Days
Starting at $694.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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
ES#4877194 - 11537545890PRMK - Coolant Hose Connector - Metal Connector vs OEM Plastic - URO Premium - BMW

Metal Connector vs OEM Plastic affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
URO Premium - Corporate Logo
ES#:
4877194
Mfg#:
11537545890PRMK
In Stock
$24.99 USD
Free Shipping
on orders $49 and up
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
ES#3091227 - SB801 - SPEC Stage 1 Clutch Kit - The perfect clutch kit for Street, Drag, Drift, Road Race, Rallye, Pulling, and Autocross. - Spec Clutches - BMW

The perfect clutch kit for Street, Drag, Drift, Road Race, Rallye, Pulling, and Autocross. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Spec Clutches - Corporate Logo
ES#:
3091227
Mfg#:
SB801
Ships in 3 Business Days
$649.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4352360 - 12131703228IGKT7 - Ignition Service Kit - With Service Tools  - Everything you need to service your ignition system - Assembled By ECS - BMW

Everything you need to service your ignition system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Kit includes all necessary service tools

Brand:
Assembled By ECS - Corporate Logo
ES#:
4352360
Mfg#:
12131703228IGKT7
In Stock
$415.99

This product was last offered at the strikethrough price on
12-17-2025

$311.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#3493408 - k70280hdoKT1 - Stage 2 Daily Clutch Kit - Designed for the daily-driven, weekend track warrior. Conservatively rated at 385ft/lbs. - South Bend Clutch - BMW

Designed for the daily-driven, weekend track warrior. Conservatively rated at 385ft/lbs. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
South Bend Clutch - Corporate Logo
ES#:
3493408
Mfg#:
K70280HDOKT1
Ships in 1 Business Day
$618.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#3621974 - 03005-HD0F-D - FX250 Stage 2 Clutch Kit - More holding power with a sprung organic/fiber tough disc Designed for Aftermarket Single Mass Flywheel - Clutch Masters - BMW

More holding power with a sprung organic/fiber tough disc Designed for Aftermarket Single Mass Flywheel affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Vehicles with S5D250G-TAJS Transmission (5-Speed with 10-Spline Input Shaft)
For Vehicles with 5-Speed Transmission and 10 Spline Input Shaft

Brand:
Clutch Masters - Corporate Logo
ES#:
3621974
Mfg#:
03005-HD0F-D
Ships in 7 Business Days
15% off MSRP

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

$721.99

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

$613.99 USD
Free Shipping
ES#43688 - 23311224964 - Genuine BMW Shift Sleeve - 1st And 2nd Gear Shift Sleeve - Genuine BMW - BMW

1st And 2nd Gear Shift Sleeve affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
43688
Mfg#:
23311224964
Ships on Jul 7, 2026
3% off MSRP

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

$206.99

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

$199.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement
ES#4583530 - VAC-HPCD-M50-ACP - VAC Motorsports ATI A/C Pulley - The perfect addition to your VAC ATI Harmonic Damper Pulley when retaining your A/C system - VAC Motorsports - BMW

The perfect addition to your VAC ATI Harmonic Damper Pulley when retaining your A/C system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
VAC Motorsports - Corporate Logo
ES#:
4583530
Mfg#:
VAC-HPCD-M50-ACP
Ships in 9 Business Days
$149.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement
ES#4045633 - 16146752368 - Fuel Pump - Replaces the pump and includes a new seal and hardware to make installation quick and easy! - Vemo - BMW

Replaces the pump and includes a new seal and hardware to make installation quick and easy! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Vemo - Corporate Logo
ES#:
4045633
Mfg#:
16146752368
In Stock at Vendor
$199.15 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Upgrade to a Race-Inspired Chassis-Mounted Short Throw Shifter! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Fits all shift knobs with 12mm x 1.5.

Brand:
REVIN - Corporate Logo
ES#:
4810679
Mfg#:
REVSSKRE46
Back Ordered
Starting at $593.98 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

More About Performance Engine & Drivetrain Parts

Worn mounts, bushings, and other drivetrain components rob performance. Replace or upgrade your drivetrain with our extensive catalog of mounts, bushings, clutch kits, and more.

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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