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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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BMW - Engine/Cooling

ES#4900639 - 11531437040 - BMW - Engine/Cooling - A common item to crack causing leaks - Meyle - BMW

A common item to crack causing leaks 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! For vehicles with production date from 09/1998

Brand:
Meyle - Corporate Logo
ES#:
4900639
Mfg#:
11531437040
Special Order: No Guaranteed ETA
$75.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Coolant Temperature Sensor

ES#5456617 - 3141362103 - Coolant Temperature Sensor - Built with thermistor technology to maintain signal integrity under extreme temperature cycles, preventing overheating and poor fuel economy. - Meyle - BMW

Built with thermistor technology to maintain signal integrity under extreme temperature cycles, preventing overheating and poor fuel economy. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 2X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Meyle - Corporate Logo
ES#:
5456617
Mfg#:
3141362103
Special Order: No Guaranteed ETA
$8.99 USD
Free Shipping
on orders $49 and up

OEM BMW Engine Air Pump

Common source of emissons related issues affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Pierburg - Corporate Logo
ES#:
3032195
Mfg#:
11721433959
Special Order: No Guaranteed ETA
$250.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

CP-Carrillo Forged Piston Set - M54B25 Std. Size

ES#4758876 - M54B25-CPP-84 - CP-Carrillo Forged Piston Set - M54B25 Std. Size - Upgrade to CP-Carrillo's Forged Pistons in Your M54B25 Powered BMW! - 5150 Autosport - BMW

Upgrade to CP-Carrillo's Forged Pistons in Your M54B25 Powered BMW! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For Vehicles With M54B25 Engine Only

Brand:
5150 Autosport - Corporate Logo
ES#:
4758876
Mfg#:
M54B25-CPP-84
Back Ordered
Starting at $1349.99 USD
Customize
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

ECS Cooling Maintenance Kit - Level 3

ES#3246841 - ECSE391155p - ECS Cooling Maintenance Kit - Level 3 - The ultimate cooling refresh kit - with aftermarket components, featuring an ECS Aluminum Pulley and a Stewart High Performance Water Pump - Assembled By ECS - BMW

The ultimate cooling refresh kit - with aftermarket components, featuring an ECS Aluminum Pulley and a Stewart High Performance Water Pump affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with production date from 09/2002

Brand:
Assembled By ECS - Corporate Logo
ES#:
3246841
Mfg#:
ECSE391155P
Back Ordered
Auto Notify
ON SALE!
$1030.99

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

$1022.04 USD
This product is lifetime replacement eligible Partial Replacement

Oxygen Sensor - Priced Each

ES#2873855 - 11781742050 - Oxygen Sensor - Priced Each - 2 required in each application - Febi - BMW

2 required in each application 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:
Febi - Corporate Logo
ES#:
2873855
Mfg#:
11781742050
Special Order: No Guaranteed ETA
$110.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

"Cold Climate" Crankcase Pressure Regulator Valve

ES#4327299 - 11617533400 - "Cold Climate" Crankcase Pressure Regulator Valve - Commonly referred to as the "oil separator" - Meyle - BMW

Commonly referred to as the "oil separator" 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:
Meyle - Corporate Logo
ES#:
4327299
Mfg#:
11617533400
Special Order: No Guaranteed ETA
$69.99 USD
Free Shipping
on orders $49 and up

Upper Oil Separator Vent Tube

ES#3672460 - 11617504535 - Upper Oil Separator Vent Tube - Runs from the top of the oil separator up to intake manifold. Made in Germany. - Meyle - BMW

Runs from the top of the oil separator up to intake manifold. Made in Germany. 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:
Meyle - Corporate Logo
ES#:
3672460
Mfg#:
11617504535
Special Order: No Guaranteed ETA
$37.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

BMW - Engine/Cooling

ES#4900640 - 11531705224 - BMW - Engine/Cooling - Includes retaining clips - Meyle - BMW

Includes retaining clips 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:
Meyle - Corporate Logo
ES#:
4900640
Mfg#:
11531705224
Special Order: No Guaranteed ETA
$35.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Vacuum Control Valve

ES#4745361 - 11747810831 - Vacuum Control Valve - Used in emissions and noise reduction systems. - URO - BMW MINI

Used in emissions and noise reduction systems. 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#:
4745361
Mfg#:
11747810831
Back Ordered
$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Air Temperature Sensor

ES#3514986 - 64118391392 - Air Temperature Sensor - URO - BMW

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#:
3514986
Mfg#:
64118391392
Back Ordered
$7.99 USD
Free Shipping
on orders $49 and up

Camshaft Position Sensor

ES#4841504 - 12147539165 - Camshaft Position Sensor - A camshaft position sensor is a crucial engine component that monitors the position and rotational speed of the camshaft, enabling the engine control unit to optimize fuel injection and ignition timing for improved performance and efficiency. - URO - BMW

A camshaft position sensor is a crucial engine component that monitors the position and rotational speed of the camshaft, enabling the engine control unit to optimize fuel injection and ignition timing for improved performance and efficiency. 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#:
4841504
Mfg#:
12147539165
Back Ordered
Auto Notify
$18.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Crankcase Pressure Regulator Valve - Cold Climate Version

Commonly referred to as the "oil separator" affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Superior performance for both warm and cold climates

Brand:
Atlantic Enterprises
ES#:
2602981
Mfg#:
11617533400
Back Ordered
$71.99

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

$69.99 USD
Free Shipping
on orders $49 and up

CP Forged Piston Set - BMW M54B25 - 84mm Bore - 8.5:1 CR

Designed for high-horsepower turbo engine builds affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
CP Carrillo - Corporate Logo
ES#:
5396063
Mfg#:
CPFPSM54B25848.5
Back Ordered
$1399.99 USD
Free Shipping
on orders $49 and up

Valve Cover Gasket Set

Replacement Valve Cover Gasket Set from Corteco affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date from 09/2002

Brand:
Corteco - Corporate Logo
ES#:
4070812
Mfg#:
11120030496
Back Ordered
$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Engine Oil Pump Chain

Keep your BMW running strong, replace that worn out or damaged timing chain with this OEM Timing Chain from INA. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Ina - Corporate Logo
ES#:
4920336
Mfg#:
ZC0128
Back Ordered
$13.99 USD
Free Shipping
on orders $49 and up

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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