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BMW E46 323Ci M52 2.5L

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BMW E46 323Ci M52 2.5L Engine Parts & Accessories

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Lightweight AGM Battery

ES#3617613 - B3121 - Lightweight AGM Battery - Perfect upgrade to get rid of a troublesome Lead-Acid battery and add both power and reliability at the same time! - Braille - BMW

Perfect upgrade to get rid of a troublesome Lead-Acid battery and add both power and reliability at the same time! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Braille - Corporate Logo
ES#:
3617613
Mfg#:
B3121
Ships in 6 Business Days
$270.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Density Line Performance Transmission Mount Set

ES#3143399 - 034-509-4050-SD - Density Line Performance Transmission Mount Set - Increase performance and durability without sacrificing comfort - an ECS Tuning exclusive! - 034Motorsport - BMW

Increase performance and durability without sacrificing comfort - an ECS Tuning exclusive! affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3143399
Mfg#:
034-509-4050-SD
In Stock
ON SALE! SAVE 10%
$66.00

This product was last offered at the strikethrough price on
06-28-2026

$59.40 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Idle Control Valve

ES#3559958 - 13411744713 - Idle Control Valve - An integral part of the air intake system - Hamburg Tech - BMW

An integral part of the air intake system affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
3559958
Mfg#:
13411744713
In Stock
$93.95 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic Alternator Belt Tensioner Assembly

ES#3129598 - 11287838797 - Hydraulic Alternator Belt Tensioner Assembly - Hydraulic tensioner assembly for alternator/water pump belt, does not come with roller/pulley - URO - BMW

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 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
3129598
Mfg#:
11287838797
In Stock
$53.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Rear Crankshaft Seal

ES#3478278 - 11142249533 - Rear Crankshaft Seal - Replace when doing a clutch job. - Elring - BMW

Replace when doing a clutch job. 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:
Elring - Corporate Logo
ES#:
3478278
Mfg#:
11142249533
In Stock
$24.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Relay - White Green

ES#169431 - 61368373700 - Relay - White Green - Replaces relays of the same color - Genuine BMW - BMW MINI

Replaces relays of the same color affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Genuine BMW - Corporate Logo
ES#:
169431
Mfg#:
61368373700
In Stock
4% off MSRP

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

$24.65

This product was last offered at the strikethrough price on
05-04-2026

$23.59 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Thermostat With Housing

ES#25078 - 11537509227 - Thermostat With Housing - A common item to crack causing leaks - Genuine BMW - BMW

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

Brand:
Genuine BMW - Corporate Logo
ES#:
25078
Mfg#:
11537509227
In Stock
3% off MSRP

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

$174.45

This product was last offered at the strikethrough price on
07-01-2026

$169.69 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Turner Motorsport Polyurethane Engine Mounts

ES#3546790 - 003293TMS02 - Turner Motorsport Polyurethane Engine Mounts - Performance street & track engine mounts to increase drivetrain rigidity - Turner Motorsport - BMW

Performance street & track engine mounts to increase drivetrain rigidity affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Turner Motorsport - Corporate Logo
ES#:
3546790
Mfg#:
003293TMS02
In Stock
ON SALE!
Starting at $423.99 USD
Customize
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Exhaust Manifold Gasket With Heat Shield - Priced Each

ES#2952051 - 11621732969 - Exhaust Manifold Gasket With Heat Shield - Priced Each - 2 required per vehicle - Elring - BMW

2 required per vehicle 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:
Elring - Corporate Logo
ES#:
2952051
Mfg#:
11621732969
In Stock
$42.99

This product was last offered at the strikethrough price on
03-26-2026

$30.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Supersprint Tubolare Long-Tube Performance Headers

ES#3024734 - 785501 - Supersprint Tubolare Long-Tube Performance Headers - More flow for less restrictions, don't let your exhaust be the weak point of power - Supersprint - BMW

More flow for less restrictions, don't let your exhaust be the weak point of power affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Supersprint - Corporate Logo
ES#:
3024734
Mfg#:
785501
In Stock
$1678.99 USD
Free Shipping

Crankshaft Position Sensor

ES#2570298 - 12141709616 - Crankshaft Position Sensor - Does not include O-ring - Delphi - BMW

Does not include O-ring affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
Delphi - Corporate Logo
ES#:
2570298
Mfg#:
12141709616
In Stock
$97.99

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

$94.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

VANOS Refresh Kit

ES#2763229 - 1136143253KT - VANOS Refresh Kit - Includes necessary parts to get your VANOS system sealed up and working again - Assembled By ECS - BMW

Includes necessary parts to get your VANOS system sealed up and working again 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#:
2763229
Mfg#:
1136143253KT
Ships on Aug 4, 2026
Auto Notify
ON SALE! SAVE 19%
$162.99

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

$132.62 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Complete Cooling System Hose Kit

ES#4315899 - 11531436408KT2 - Complete Cooling System Hose Kit - A complete hose kit including coolant and ECS Silicone radiator hoses! - Assembled By ECS - BMW

A complete hose kit including coolant and ECS Silicone radiator hoses! 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#:
4315899
Mfg#:
11531436408KT2
Ships on Aug 19, 2026
Auto Notify
ON SALE! SAVE 24%
$428.99

This product was last offered at the strikethrough price on
01-03-2026

$325.13 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Partial Replacement

Mechanical Alternator Belt Tensioner Assembly

ES#2162740 - 11281427252 - Mechanical Alternator Belt Tensioner Assembly - Tensions the belt connecting the water pump, alternator, and power steering pump. Includes roller. - Ina - BMW
ECS Tuning recommends this product.

Tensions the belt connecting the water pump, alternator, and power steering pump. Includes roller. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
2162740
Mfg#:
11281427252
In Stock
$54.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

034Motorsport Solid Rubber Engine And Trans Mount Set

ES#3647385 - 034-509-3646 - 034Motorsport Solid Rubber Engine And Trans Mount Set - Increase performance and durability without sacrificing comfort. True rubber mounts - a positive upgrade over cushy, factory-installed fluid-filled mounts. - 034Motorsport - BMW

Increase performance and durability without sacrificing comfort. True rubber mounts - a positive upgrade over cushy, factory-installed fluid-filled mounts. affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms

Brand:
034Motorsport - Corporate Logo
ES#:
3647385
Mfg#:
034-509-3646
In Stock
ON SALE! SAVE 10%
$276.00

This product was last offered at the strikethrough price on
06-28-2026

$248.40 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.
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