Shop Our Clearance Sale - Up To 80% Off FREE SHIPPING on Orders $49+ *exclusions apply

Menu

Call Us330-331-2003 ChatLive Chat Text Us!
0 Shopping Cart
Your Vehicle Clear

BMW E39 525i M54 2.5L

    • Audi
    • BMW
    • Mercedes Benz
    • MINI
    • Porsche
    • Volkswagen

Saved Vehicles

My Vehicles
You currently have no stored vehicles.

Recent Vehicles

Recent Vehicles Manage Vehicles

You currently have no recent vehicles.

We'll automatically keep fully selected vehicles here for your convenience.

Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
0
Call Us330-331-2003 ChatLive Chat Text Us!
Track My Order View Order History Submit a Return Contact Us Wholesale Information Lifetime Replacement Returns and Warranty Information
Cancel
0
Sales & Specials
Enter Your Vehicle
garage-red
Your Vehicle BMW E39 525i M54 2.5L
Your Vehicle BMW E39 525i M54 2.5L
Change Clear

BMW E39 525i M54 2.5L Engine Parts & Accessories

Sort By
Filter By
Return to Top

Alternator - 90 Amp (Compact)

ES#4690100 - 12317501687 - Alternator - 90 Amp (Compact) - No core charge required! - Vaico Q+ - BMW

No core charge required!

Brand:
Vaico Q+ - Corporate Logo
ES#:
4690100
Mfg#:
12317501687
Special Order: No Guaranteed ETA
$329.99 USD
Free Shipping
on orders $49 and up

Fuel Injector O-Ring - Priced Each

ES#2725345 - 13641437487KT - Fuel Injector O-Ring - Priced Each - Fuel rail to injector O-ring - Elring - BMW MINI

Fuel rail to injector O-ring 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
Elring - Corporate Logo
ES#:
2725345
Mfg#:
13641437487KT
In Stock
$3.99 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

Alternator - 120amp

ES#2167421 - 12317501599 - Alternator - 120amp - Brand new unit with no core charge. - Valeo - BMW

Brand new unit with no core charge. We Price Match - Give Us A Call or Chat!

Brand:
Valeo - Corporate Logo
ES#:
2167421
Mfg#:
12317501599
Ships on Nov 3, 2026
$323.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Drive Belt Pulley Cap

ES#4316566 - 11281727159 - Drive Belt Pulley Cap - Replace that missing protective cap and protect your belt tensioner bearing from debris. - URO - BMW

Replace that missing protective cap and protect your belt tensioner bearing from debris. 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
4316566
Mfg#:
11281727159
In Stock
$3.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

3 Pin Connector

ES#4772586 - 12521732596 - 3 Pin Connector - Includes connector housing with terminals and seals. Commonly used for the camshaft position sensor. - ECS - BMW

Includes connector housing with terminals and seals. Commonly used for the camshaft position sensor. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4772586
Mfg#:
12521732596
In Stock
ON SALE! SAVE 25%
$10.99

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

$8.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Block Gasket Set

ES#2608414 - 11111432478 - Engine Block Gasket Set - Complete lower engine gasket set - Victor Reinz - BMW

Complete lower engine gasket set

Brand:
Victor Reinz - Corporate Logo
ES#:
2608414
Mfg#:
11111432478
Ships in 1 Business Day
$347.84

This product was last offered at the strikethrough price on
08-26-2026

$320.11 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Performance Coated Rod Bearing Set

ES#4369232 - 11-AM-RCRB-M50 - Performance Coated Rod Bearing Set - Designed for ultimate protection and performance! - Achilles Motorsports - BMW

Designed for ultimate protection and performance!

Brand:
Achilles Motorsports - Corporate Logo
ES#:
4369232
Mfg#:
11-AM-RCRB-M50
Ships in 3 Business Days
$159.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hex Bolt

ES#14585 - 07119904529 - Hex Bolt - M10x55 - Genuine BMW - BMW

M10x55

Brand:
Genuine BMW - Corporate Logo
ES#:
14585
Mfg#:
07119904529
In Stock
$10.45

This product was last offered at the strikethrough price on
04-14-2026

$9.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Secondary Air Pump Mount

ES#2534428 - 11727559515 - Secondary Air Pump Mount - 3 required per car - URO - BMW

3 required per car 2X Entries Into Our F80 M3 Sweepstakes
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2534428
Mfg#:
11727559515
In Stock
$6.99

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

$4.79 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rubber Grommet

ES#18296 - 11121730352 - Rubber Grommet - Used to space the engine cover out from the valve cover - Genuine BMW - BMW

Used to space the engine cover out from the valve cover

Brand:
Genuine BMW - Corporate Logo
ES#:
18296
Mfg#:
11121730352
In Stock
$8.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Shark Injector Performance Software

ES#3138971 - N4MS4352 - Shark Injector Performance Software - Performance software designed to unlock your BMW's potential. Removes top speed limiter, raises rev limit to 7,000rpm, improves throttle response, and improves power output: +5HP +5LB/FT gains! - Shark Injector - BMW

Performance software designed to unlock your BMW's potential. Removes top speed limiter, raises rev limit to 7,000rpm, improves throttle response, and improves power output: +5HP +5LB/FT gains!

Brand:
Shark Injector - Corporate Logo
ES#:
3138971
Mfg#:
N4MS4352
In Stock
ON SALE! SAVE 10%
$349.00

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

$314.10 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Plug Housing

ES#31215 - 12521427615 - Plug Housing - 2 POL - Genuine BMW - BMW MINI

2 POL

Brand:
Genuine BMW - Corporate Logo
ES#:
31215
Mfg#:
12521427615
In Stock
$5.99

This product was last offered at the strikethrough price on
06-08-2026

$5.20 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

SCORCHER High-Performance Ignition Coil - Priced Each

ES#4781457 - 77-92001 - SCORCHER High-Performance Ignition Coil - Priced Each - Upgrade your ignition coils to ensure optimal ignition performance - AFE - BMW

Upgrade your ignition coils to ensure optimal ignition performance

Brand:
AFE - Corporate Logo
ES#:
4781457
Mfg#:
77-92001
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.

$65.00

This product was last offered at the strikethrough price on
10-10-2026

$52.00 USD
Free Shipping
on orders $49 and up

Hydraulic Alternator Belt Tensioner

ES#21655 - 11281717188 - Hydraulic Alternator Belt Tensioner - Hydraulic tensioner for alternator belt, ideal for servicing high mileage tensioner - Genuine BMW - BMW

Hydraulic tensioner for alternator belt, ideal for servicing high mileage tensioner

Brand:
Genuine BMW - Corporate Logo
ES#:
21655
Mfg#:
11281717188
Ships in 1-2 days
6% off MSRP

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

$165.99

This product was last offered at the strikethrough price on
10-10-2026

$155.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Intake Temperature Sensor

ES#3023844 - 13621739510 - Intake Temperature Sensor - Monitors intake air temperature - Hella - BMW
ECS Tuning recommends this product.

Monitors intake air temperature

Brand:
Hella - Corporate Logo
ES#:
3023844
Mfg#:
13621739510
Back Ordered
$38.99 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.

Terms of Use Privacy Policy Your Privacy Choices Cookie Policy ECS Tuning is part of Enthusiast Auto Holdings