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BMW E39 525i M54 2.5L

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

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Spal Electric Fan Harness with Relay

ES#4147343 - FRH - Spal Electric Fan Harness with Relay - Electric Fan Relay - 40 amp, 12V, single pole wiring harness kit - Spal - Audi BMW MINI

Electric Fan Relay - 40 amp, 12V, single pole wiring harness kit

Brand:
Spal - Corporate Logo
ES#:
4147343
Mfg#:
FRH
Ships in 3 Business Days
12% off MSRP

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

$112.99

This product was last offered at the strikethrough price on
09-25-2026

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

Magnum FORCE Pro Dry S Stage 1 Air Intake System

ES#519214 - 51-10601 - Magnum FORCE Pro Dry S Stage 1 Air Intake System - Oil-free filter - more flow, less maintenance! +4hp & +5lb/ft! - AFE - BMW

Oil-free filter - more flow, less maintenance! +4hp & +5lb/ft! CARB certified for sale in all 50 states

Brand:
AFE - Corporate Logo
ES#:
519214
Mfg#:
51-10601
EO#:
D-550-3
Ships in 3 Business Days
20% off MSRP

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

$498.99

This product was last offered at the strikethrough price on
09-25-2026

$399.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Magnum FORCE Pro 5R Stage 1 Air Intake System

ES#519369 - 54-10601 - Magnum FORCE Pro 5R Stage 1 Air Intake System - Excellent sound & power - the ultimate performance intake! +4hp & +5lb/ft! - AFE - BMW

Excellent sound & power - the ultimate performance intake! +4hp & +5lb/ft! CARB certified for sale in all 50 states

Brand:
AFE - Corporate Logo
ES#:
519369
Mfg#:
54-10601
EO#:
D-550-2
Ships in 3 Business Days
20% off MSRP

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

$483.99

This product was last offered at the strikethrough price on
09-25-2026

$387.00 USD
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coil, 4-Pack

ES#5435316 - MMIG-BMW-0204 - Ignition Coil, 4-Pack - Designed to restore the factory performance and fuel efficiency of a wide range of BMW models from 2002 to 2016. - Mishimoto - BMW

Designed to restore the factory performance and fuel efficiency of a wide range of BMW models from 2002 to 2016.

Brand:
Mishimoto - Corporate Logo
ES#:
5435316
Mfg#:
MMIG-BMW-0204
Ships in 3 Business Days
$123.99 USD
Free Shipping
on orders $49 and up

Transmission Mount Bushing - Heritage Series

ES#5471032 - PFF5-4655H - Transmission Mount Bushing - Heritage Series - Slate-grey polyurethane mounts stop transmission twist for crisp, precise shifting. - Powerflex - BMW

Slate-grey polyurethane mounts stop transmission twist for crisp, precise shifting.

Brand:
Powerflex - Corporate Logo
ES#:
5471032
Mfg#:
PFF5-4655H
Back Ordered
$118.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Polyurethane Differential Bushing - Front Position

ES#4030638 - 026808ECS01 - Performance Polyurethane Differential Bushing - Front Position - ECS engineered to improve power application and provide superior service life over factory rubber bushings - ECS - BMW

ECS engineered to improve power application and provide superior service life over factory rubber bushings 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4030638
Mfg#:
026808ECS01
In Stock
ON SALE! SAVE 25%
$67.99

This product was last offered at the strikethrough price on
06-13-2026

$50.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Turner Motorsport Power Pulley Kit - Bosch Alternator pulley

ES#3027872 - PPK-E39-M54 - Turner Motorsport Power Pulley Kit - Bosch Alternator pulley - Possibly the best horsepower-per-dollar available anywhere. No downsides, no compromises! - Turner Motorsport - BMW

Possibly the best horsepower-per-dollar available anywhere. No downsides, no compromises! 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Turner Motorsport - Corporate Logo
ES#:
3027872
Mfg#:
PPK-E39-M54
In Stock
ON SALE! SAVE 15%
$382.99

This product was last offered at the strikethrough price on
06-13-2026

$325.54 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

AGA Tools Performance Clutch Pin - Grooved

ES#4464332 - AGA-CPP-223-328 - AGA Tools Performance Clutch Pin - Grooved - An essential upgrade for every manual transmission equipped BMW! - AGA Tools - BMW

An essential upgrade for every manual transmission equipped BMW!

Brand:
AGA Tools - Corporate Logo
ES#:
4464332
Mfg#:
AGA-CPP-223-328
In Stock
$45.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump

ES#5435337 - MMWP-M50-92 - Water Pump - Engineered as a superior alternative to the factory water pumps found in many 19922006 BMW models. - Mishimoto - BMW

Engineered as a superior alternative to the factory water pumps found in many 1992–2006 BMW models.

Brand:
Mishimoto - Corporate Logo
ES#:
5435337
Mfg#:
MMWP-M50-92
In Stock
$72.99 USD
Free Shipping
on orders $49 and up

Supertech BMW S52 Steel Spring Retainer - Set Of 24

ES#4675741 - RET-HBK-ST-24 - Supertech BMW S52 Steel Spring Retainer - Set Of 24 - Rev higher and drive faster with confidence. - Supertech - BMW

Rev higher and drive faster with confidence.

Brand:
Supertech - Corporate Logo
ES#:
4675741
Mfg#:
RET-HBK-ST-24
In Stock at Vendor
20% off MSRP

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

$352.99

This product was last offered at the strikethrough price on
09-25-2026

$281.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Service Kit - With Service Tools

ES#4352359 - 12131712219KT6 - Ignition Service Kit - With Service Tools - Everything you need to service your ignition system including Bosch ignition coils and Bosch Platinum+4 spark plugs - Assembled By ECS - BMW

Everything you need to service your ignition system including Bosch ignition coils and Bosch Platinum+4 spark plugs 10X Entries Into Our F80 M3 Sweepstakes
Kit includes all necessary service tools

Brand:
Assembled By ECS - Corporate Logo
ES#:
4352359
Mfg#:
12131712219KT6
In Stock
ON SALE!
$273.30 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

ECS Catch Can O-ring

ES#3097721 - N1.50X051 - ECS Catch Can O-ring - Replacement ECS catch can O-ring - ECS - Audi BMW Volkswagen MINI

Replacement ECS catch can O-ring 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
3097721
Mfg#:
N1.50X051
In Stock
ON SALE! SAVE 25%
$5.99

This product was last offered at the strikethrough price on
06-13-2026

$4.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BMC Performance Air Filter

ES#3195193 - FB132/01 - BMC Performance Air Filter - Lifetime high-flow air filter that's a direct replacement - BMC - BMW

Lifetime high-flow air filter that's a direct replacement

Brand:
BMC - Corporate Logo
ES#:
3195193
Mfg#:
FB132/01
Back Ordered
$84.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Transmission Mount Bushing - Black Series

ES#5471031 - PFF5-4655BLK - Transmission Mount Bushing - Black Series - Track-spec transmission mounts eliminate drivetrain deflection for laser-precise shifting - Powerflex - BMW

Track-spec transmission mounts eliminate drivetrain deflection for laser-precise shifting

Brand:
Powerflex - Corporate Logo
ES#:
5471031
Mfg#:
PFF5-4655BLK
In Stock
$118.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Universal 14" Electric Fan - Black

ES#4147278 - 30100385 - Universal 14" Electric Fan - Black - 1038 CFM. High performance puller fan with curved blades. - Spal - Audi BMW MINI

1038 CFM. High performance puller fan with curved blades.

Brand:
Spal - Corporate Logo
ES#:
4147278
Mfg#:
30100385
In Stock at Vendor
15% off MSRP

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

$130.99

This product was last offered at the strikethrough price on
09-25-2026

$111.99 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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