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BMW E39 525i M54 2.5L

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BMW E39 525i M54 2.5L Engine Parts & Accessories

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Hydraulic Alternator Belt Tensioner Assembly

ES#2873679 - 11287838797 - Hydraulic Alternator Belt Tensioner Assembly - Hydraulic tensioner assembly for alternator/water pump belt, does not come with roller/pulley - Febi - BMW
ECS Tuning recommends this product.

Hydraulic tensioner assembly for alternator/water pump belt, does not come with roller/pulley We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2873679
Mfg#:
11287838797
Ships on Jan 12, 2027
$83.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Control Valve

ES#4069996 - 11611312737 - Vacuum Control Valve - Common source of emission related issues - Pierburg - BMW

Common source of emission related issues

Brand:
Pierburg - Corporate Logo
ES#:
4069996
Mfg#:
11611312737
Ships in 9 Business Days
$27.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Pressure Regulator Valve

ES#4304692 - 11617501566 - Crankcase Pressure Regulator Valve - Commonly referred to as the "oil separator" or PCV - Bavarian Autosport - BMW

Commonly referred to as the "oil separator" or PCV 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4304692
Mfg#:
11617501566
In Stock
ON SALE! SAVE 20%
$32.99

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

$26.39 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Ignition Coil - Priced Each

ES#1897568 - 12137599219 - Ignition Coil - Priced Each - Get your engine working flawlessly with these new ignition coils - Genuine BMW - BMW

Get your engine working flawlessly with these new ignition coils

Brand:
Genuine BMW - Corporate Logo
ES#:
1897568
Mfg#:
12137599219
Ships on Apr 5, 2027
$114.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

ECS Cooling Maintenance Kit - Level 3

ES#2739217 - ECSE391153 - ECS Cooling Maintenance Kit - Level 3 - The ultimate cooling refresh kit - with aftermarket components, featuring an ECS Aluminum Pulley and a GEBA water pump - Assembled By ECS - BMW

The ultimate cooling refresh kit - with aftermarket components, featuring an ECS Aluminum Pulley and a GEBA water pump 10X Entries Into Our F80 M3 Sweepstakes
For vehicles with production date up to 09/2002

Brand:
Assembled By ECS - Corporate Logo
ES#:
2739217
Mfg#:
ECSE391153
Back Ordered
ON SALE!
$942.99

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

$919.28 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Performance Kevlar Reinforced Accessory Belt - M54

ES#4661013 - 4PK863 - Performance Kevlar Reinforced Accessory Belt - M54 - Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. - ECS - BMW
ECS Tuning recommends this product.

Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. 10X Entries Into Our F80 M3 Sweepstakes

For vehicles with production date from 09/2002

Brand:
ECS - Corporate Logo
ES#:
4661013
Mfg#:
4PK863
In Stock
$26.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Cover Beauty Cap - Priced Each

ES#2817004 - 11121726089 - Engine Cover Beauty Cap - Priced Each - Used to cover the securing hardware for the engine cover - Vaico - BMW

Used to cover the securing hardware for the engine cover We Price Match - Give Us A Call or Chat!
2 required per cover, used on both engine covers

Brand:
Vaico - Corporate Logo
ES#:
2817004
Mfg#:
11121726089
In Stock
$5.85 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mechanical A/C Belt Tensioner Assembly

ES#2528731 - 11287512758 - Mechanical A/C Belt Tensioner Assembly - Complete tensioner assembly with roller - Ina - BMW
ECS Tuning recommends this product.

Complete tensioner assembly with roller We Price Match - Give Us A Call or Chat!
For vehicles with production date from 09/2002

Brand:
Ina - Corporate Logo
ES#:
2528731
Mfg#:
11287512758
In Stock
$56.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Battery Hold Down

ES#2697968 - 61217631587 - Battery Hold Down - Used on the edge of the battery case - Genuine BMW - BMW

Used on the edge of the battery case

Brand:
Genuine BMW - Corporate Logo
ES#:
2697968
Mfg#:
61217631587
In Stock
$25.88 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Remanufactured Starter Motor

ES#4940639 - 0986017110 - Remanufactured Starter Motor - **CLEARANCE ITEM** Remanufactured starter with no core charge - Discounted while supplies last! - Bosch - BMW

**CLEARANCE ITEM** Remanufactured starter with no core charge - Discounted while supplies last!

Brand:
Bosch - Corporate Logo
ES#:
4940639
Mfg#:
0986017110
In Stock
Limited Qty Sale
$178.99

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

$128.99 USD
Free Shipping
on orders $49 and up

Vanos Solenoid Piston

ES#23197 - 11367560298 - Vanos Solenoid Piston - Can start to stick over time - Genuine BMW - BMW

Can start to stick over time

Brand:
Genuine BMW - Corporate Logo
ES#:
23197
Mfg#:
11367560298
In Stock
2% off MSRP

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

$43.99

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

$42.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Temperature Sensor

ES#4316486 - 13621433076 - Temperature Sensor - Monitors coolant / oil temperature - Bavarian Autosport - BMW

Monitors coolant / oil temperature 10X Entries Into Our F80 M3 Sweepstakes

Brand:
Bavarian Autosport - Corporate Logo
ES#:
4316486
Mfg#:
13621433076
In Stock
ON SALE! SAVE 20%
$14.99

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

$11.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

3 Pin Connector

ES#4772596 - 12527519996 - 3 Pin Connector - Includes connector housing with terminals and seals. Commonly used for the pencil-style ignition coil connector. - ECS - BMW MINI

Includes connector housing with terminals and seals. Commonly used for the pencil-style ignition coil connector. 10X Entries Into Our F80 M3 Sweepstakes

Brand:
ECS - Corporate Logo
ES#:
4772596
Mfg#:
12527519996
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

Valve Cover Gasket Set

ES#18833 - 11129070990 - Valve Cover Gasket Set - Direct from the factory - Genuine BMW - BMW

Direct from the factory For vehicles with production date up to 09/2002

Brand:
Genuine BMW - Corporate Logo
ES#:
18833
Mfg#:
11129070990
In Stock
17% off MSRP

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

$82.52

This product was last offered at the strikethrough price on
09-10-2026

$68.89 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankshaft Pulley With Vibration Damper

ES#2873649 - 11231438995 - Crankshaft Pulley With Vibration Damper - Reduces vibrations and connects accessories - Febi - BMW

Reduces vibrations and connects accessories We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2873649
Mfg#:
11231438995
Ships in 2 Business Days
$178.99 USD
Free Shipping
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.

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