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

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
affirm financing terms & conditions
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 Most Popular Parts

Sort By
Filter By
Return to Top

Oil Separator Kit - Level 1

ES#4349927 - 11617501566S1 - Oil Separator Kit - Level 1 - The most commonly replaced components in your breather system - Bremmen Parts - BMW

The most commonly replaced components in your breather system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
4349927
Mfg#:
11617501566S1
In Stock
ON SALE! SAVE 15%
$95.99

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

$81.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat With Housing

ES#10944 - 11537509227 - Thermostat With Housing - A common item to crack causing leaks - Wahler - BMW
ECS Tuning recommends this product.

A common item to crack causing leaks affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Wahler - Corporate Logo
ES#:
10944
Mfg#:
11537509227
In Stock
$69.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

PCV Breather Hose Kit

ES#2708858 - BMM54PCVKIT - PCV Breather Hose Kit - Comes with everything needed to refresh the PCV System! - URO - BMW
ECS Tuning recommends this product.

Comes with everything needed to refresh the PCV System! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2708858
Mfg#:
BMM54PCVKIT
In Stock
$117.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

M54 Late Model High-Performance Ignition Service Kit

ES#4690388 - 12131712219TKT1 - M54 Late Model High-Performance Ignition Service Kit - Everything needed for a performance ignition service including spark plugs and Turner ignition coils! - Turner Motorsport - BMW

Everything needed for a performance ignition service including spark plugs and Turner ignition coils! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with production date from 10/2002

Brand:
Turner Motorsport - Corporate Logo
ES#:
4690388
Mfg#:
12131712219TKT1
In Stock
ON SALE! SAVE 13%
$267.77

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

$232.70 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

D4 ATF Automatic Transmission Fluid - 1 Quart

ES#251177 - 8352230504 - D4 ATF Automatic Transmission Fluid - 1 Quart - For use in many ZF automatic transmissions - Redline - Audi BMW Volkswagen Mercedes Benz MINI Porsche

For use in many ZF automatic transmissions affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Redline - Corporate Logo
ES#:
251177
Mfg#:
8352230504
In Stock
$18.99

This product was last offered at the strikethrough price on
06-15-2026

$18.79 USD
Free Shipping
on orders $49 and up

Stainless Brake Rotor Set Screw - M8x1.25x14mm - Priced Each

ES#2162802 - 6-ECS-001 - Stainless Brake Rotor Set Screw - M8x1.25x14mm - Priced Each - Made from stainless steel so it will not seize into the hub - ECS - BMW MINI

Made from stainless steel so it will not seize into the hub affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
2162802
Mfg#:
6-ECS-001
Ships on Jul 30, 2026
Auto Notify
ON SALE! SAVE 25%
$6.99

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

$5.24 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

APEX M12x1.5mm BMW 5 Lug Stud Kit - Black Finish - Hex Head

ES#4234900 - APEXM12STDKIT5HX - APEX M12x1.5mm BMW 5 Lug Stud Kit - Black Finish - Hex Head - 75mm Hex head studs - APEX Wheels - BMW

75mm Hex head studs affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
APEX Wheels - Corporate Logo
ES#:
4234900
Mfg#:
APEXM12STDKIT5HX
Ships in 2 Business Days
$160.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Aluminum BMW Jack Pad Adapter

ES#251251 - ECS10721 - Aluminum BMW Jack Pad Adapter - Convert your factory pads into a jack pad that you can use on your home car jack. Made in the USA. - ECS - BMW

Convert your factory pads into a jack pad that you can use on your home car jack. Made in the USA. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ECS - Corporate Logo
ES#:
251251
Mfg#:
ECS10721
In Stock
ON SALE! SAVE 25%
$63.99

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

$47.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Liqui Moly MolyGen Oil Change Kit / Inspection I

ES#3448029 - m50OCIlmgKT - Liqui Moly MolyGen Oil Change Kit / Inspection I - Includes Hengst filter, drain plug, and Liqui Moly oil with MolyGen technology - Assembled By ECS - BMW

Includes Hengst filter, drain plug, and Liqui Moly oil with MolyGen technology affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Next generation synthetic oil with up to 15% lower coefficient of friction. Glows green under UV light fo

Brand:
Assembled By ECS - Corporate Logo
ES#:
3448029
Mfg#:
M50OCILMGKT
In Stock
ON SALE! SAVE 15%
$110.99

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

$93.87 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Metal Plate Limited-Slip Differential - 1.5/2.0 Way

ES#2795404 - MF-TRS-10E90B - Metal Plate Limited-Slip Differential - 1.5/2.0 Way - Provides maximum traction regardless of whether accelerating or decelerating offering the same lock up in both circumstances. Ideal for those looking for maximum sports car feel. - Team MFactory - BMW

Provides maximum traction regardless of whether accelerating or decelerating offering the same lock up in both circumstances. Ideal for those looking for maximum sports car feel. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Any defects or warranty clams will have to go directly to Team M Factory
For vehicles with an automatic or manual transmission with a Final Gear Ratio of 3.15 or greater

Brand:
Team MFactory - Corporate Logo
ES#:
2795404
Mfg#:
MF-TRS-10E90B
Back Ordered
$999.99 USD
Free Shipping
on orders $49 and up

E39 BavSound Speaker Upgrade - E39

ES#4266130 - S1.E46.W.THF - E39 BavSound Speaker Upgrade - E39 - BavSound speakers are meticulously tuned for your BMW, and provide exceptional clarity, detail, and richness. - BavSound - BMW

BavSound speakers are meticulously tuned for your BMW, and provide exceptional clarity, detail, and richness. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
BavSound - Corporate Logo
ES#:
4266130
Mfg#:
S1.E46.W.THF
Ships in 3 Business Days
$499.00 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

M Valve stem caps

ES#3251083 - 36122456427 - M Valve stem caps - A set of black caps featuring the ///M logo - Genuine BMW - BMW

A set of black caps featuring the ///M logo affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
3251083
Mfg#:
36122456427
In Stock
$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Stage 1 Camber Plates - Street

ES#3149846 - 192416-1J - Stage 1 Camber Plates - Street - Easily adjust front camber for the first time, with additional caster adjustment - installs in place of stock strut mounts. Perfect for daily driven stock cars! - KMAC - BMW

Easily adjust front camber for the first time, with additional caster adjustment - installs in place of stock strut mounts. Perfect for daily driven stock cars! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
KMAC - Corporate Logo
ES#:
3149846
Mfg#:
192416-1J
In Stock
$380.00 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

New Alternator - AL0703N - 120A

ES#3647573 - 12317501690 - New Alternator - AL0703N - 120A - Brand New Alternator, Not a reman! - Bosch - BMW

Brand New Alternator, Not a reman! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Bosch - Corporate Logo
ES#:
3647573
Mfg#:
12317501690
In Stock
$526.99

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

$415.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

LED Angel Eye Bulb Set

ES#2718025 - 003585ZIZ01A - LED Angel Eye Bulb Set - Crisp, bright, modern lighting with plug & play installation - no error codes! - ZiZa - BMW

Crisp, bright, modern lighting with plug & play installation - no error codes! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
ZiZa - Corporate Logo
ES#:
2718025
Mfg#:
003585ZIZ01A
In Stock
ON SALE! SAVE 10%
$144.99

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

$130.49 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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 ECS Tuning is part of Enthusiast Auto Holdings