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BMW E46 325Ci M54 2.5L

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BMW E46 325Ci M54 2.5L Engine Parts & Accessories

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Hydraulic Alternator Belt Tensioner Assembly

Hydraulic tensioner assembly for alternator/water pump belt, does not come with roller/pulley affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5480937
Mfg#:
11287838797
Ships on Oct 23, 2026
Auto Notify
$59.99 USD
This product is lifetime replacement eligible Lifetime Replacement

Oil Temperature Sensor And Gauge Kit - Green/White

ES#3173689 - oiltempgaugeKT - Oil Temperature Sensor And Gauge Kit - Green/White - The perfect combination for your oil temperature needs, a Turner oil sensor flange with a Prosport gauge! - Assembled By ECS - BMW

The perfect combination for your oil temperature needs, a Turner oil sensor flange with a Prosport gauge! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3173689
Mfg#:
OILTEMPGAUGEKT
Ships on Nov 6, 2026
ON SALE!
$196.99

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

$193.26 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Oil Temperature Sensor And Gauge Kit - Blue/Red

ES#3173690 - oiltempgaugeBRKT - Oil Temperature Sensor And Gauge Kit - Blue/Red - The perfect combination for your oil temperature needs, a Turner oil sensor flange with a Prosport gauge! - Assembled By ECS - BMW

The perfect combination for your oil temperature needs, a Turner oil sensor flange with a Prosport gauge! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
3173690
Mfg#:
OILTEMPGAUGEBRKT
Ships on Nov 6, 2026
ON SALE!
$196.99

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

$193.26 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Coolant Hose (Lower Right)

ES#4900637 - 11531436408 - Coolant Hose (Lower Right) - Maintain your BMWs performance and cooling reliability with the Meyle lower right coolant hose a dependable solution for consistent engine health. - Meyle - BMW

Maintain your BMW’s performance and cooling reliability with the Meyle lower right coolant hose – a dependable solution for consistent engine health. 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#:
4900637
Mfg#:
11531436408
Special Order: No Guaranteed ETA
$32.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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

Spark Plug Boot - Priced Each

ES#4327364 - 12139067831 - Spark Plug Boot - Priced Each - Connects coil pack to spark plug - Meyle - BMW

Connects coil pack to spark plug 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#:
4327364
Mfg#:
12139067831
Special Order: No Guaranteed ETA
$15.99 USD
Free Shipping
on orders $49 and up

Oil Pressure Switch

Restore your vehicle’s critical engine monitoring system with this premium replacement Oil Pressure Switch from Meyle. 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#:
4327478
Mfg#:
12618611273
Special Order: No Guaranteed ETA
$6.99 USD
Free Shipping
on orders $49 and up

Coolant Temperature Sensor

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

Oxygen Sensor - Priced Each

2 required in each application affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Pierburg - Corporate Logo
ES#:
4726449
Mfg#:
11781247406
Special Order: No Guaranteed ETA
$55.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Air Intake Boot Kit & ECS High-Flow Air Filter

ES#4752824 - M52TUBTFLTRKT - Air Intake Boot Kit & ECS High-Flow Air Filter - Solve vacuum leaks while increasing intake air flow - Assembled By ECS - BMW

Solve vacuum leaks while increasing intake air flow affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Assembled By ECS - Corporate Logo
ES#:
4752824
Mfg#:
M52TUBTFLTRKT
Ships on Nov 30, 2026
ON SALE! SAVE 19%
$167.99

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

$136.79 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

E46 325i/Ci Power Pack

ES#3980994 - 2532708ktKT - E46 325i/Ci Power Pack - Improve your cars performance with this effective and simple upgrade kit! - Assembled By ECS - BMW

Improve your cars performance with this effective and simple upgrade kit! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with production date after 02/2003 with Bosch alternator

Brand:
Assembled By ECS - Corporate Logo
ES#:
3980994
Mfg#:
2532708KTKT
Back Ordered
Auto Notify
ON SALE!
$1955.99

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

$1862.86 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

E46 325i/Ci Power Pack

ES#3980993 - 787406kKT - E46 325i/Ci Power Pack - Improve your cars performance with this effective and simple upgrade kit! - Assembled By ECS - BMW

Improve your cars performance with this effective and simple upgrade kit! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with production date up to 02/2003 with Bosch alternator

Brand:
Assembled By ECS - Corporate Logo
ES#:
3980993
Mfg#:
787406KKT
Back Ordered
Auto Notify
ON SALE!
$1955.99

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

$1862.86 USD
Free Shipping
This product is lifetime replacement eligible Partial Replacement

Accessory Belt - Alternator/Water Pump/Power Steering Belt

ES#4342998 - 11281437475 - Accessory Belt - Alternator/Water Pump/Power Steering Belt - Febi - 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:
Febi - Corporate Logo
ES#:
4342998
Mfg#:
11281437475
Special Order: No Guaranteed ETA
$18.99 USD
This product is lifetime replacement eligible Lifetime 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!
For vehicles with production date from 09/1998

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

Timing Chain Kit

ES#2597202 - 11311432176KT4 - Timing Chain Kit - Everything needed to get the job done using genuine BMW components. Includes coolant, oil and a filter - Genuine BMW - BMW

Everything needed to get the job done using genuine BMW components. Includes coolant, oil and a filter affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
For vehicles with production date from 09/2002

Brand:
Genuine BMW - Corporate Logo
ES#:
2597202
Mfg#:
11311432176KT4
Back Ordered
$732.99 USD
Free Shipping
This product is lifetime replacement eligible Partial 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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