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BMW E46 323i M52 2.5L

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BMW E46 323i M52 2.5L Engine Pulley Parts

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Belt tensioner base plate

ES#21659 - 11281726774 - Belt tensioner base plate - Used to mount the belt tensioner to the engine - Genuine BMW - BMW

Used to mount the belt tensioner to the engine

Brand:
Genuine BMW - Corporate Logo
ES#:
21659
Mfg#:
11281726774
Ships in 5 Business Days
$67.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Mechanical A/C Belt Tensioner Assembly

ES#2813356 - 11281433571 - Mechanical A/C Belt Tensioner Assembly - Complete tensioner assembly with roller - Hamburg Tech - BMW

Complete tensioner assembly with roller We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813356
Mfg#:
11281433571
Ships in 1 Business Day
$52.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt - Air Conditioning Compressor

ES#21618 - 11281437450 - Accessory Belt - Air Conditioning Compressor - Keep your A/C system operating properly. - Genuine BMW - BMW

Keep your A/C system operating properly.

Brand:
Genuine BMW - Corporate Logo
ES#:
21618
Mfg#:
11281437450
In Stock
ON SALE!
$42.99

This product was last offered at the strikethrough price on
06-25-2026

$41.55 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic Alternator Belt Tensioner Roller

ES#2873663 - 11281748131 - Hydraulic Alternator Belt Tensioner Roller - Replacement is recommend with every belt service - Febi - BMW

Replacement is recommend with every belt service 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2873663
Mfg#:
11281748131
Ships on Oct 15, 2026
$31.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic Alternator Belt Tensioner Roller

ES#4069663 - 11281748131 - Hydraulic Alternator Belt Tensioner Roller - Replacement is recommend with every belt service - Meyle - BMW

Replacement is recommend with every belt service 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4069663
Mfg#:
11281748131
Ships on Nov 27, 2026
$23.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Idler Pulley

ES#3673270 - 11287841228 - Idler Pulley - Runs on water pump and alternator belt, used on both mechanical and hydraulic tensioner systems - JL Germany - BMW

Runs on water pump and alternator belt, used on both mechanical and hydraulic tensioner systems

Brand:
JL Germany
ES#:
3673270
Mfg#:
11287841228
Special Order: No Guaranteed ETA
$20.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Mechanical Alternator Belt Tensioner Pulley Cover

ES#21612 - 11281435114 - Mechanical Alternator Belt Tensioner Pulley Cover - Seals the front of the pulley from debris - Genuine BMW - BMW MINI

Seals the front of the pulley from debris

Brand:
Genuine BMW - Corporate Logo
ES#:
21612
Mfg#:
11281435114
In Stock
$5.99

This product was last offered at the strikethrough price on
03-04-2026

$2.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic Alternator Belt Tensioner Roller

ES#2813365 - 11281748131 - Hydraulic Alternator Belt Tensioner Roller - Replacement is recommend with every belt service - Hamburg Tech - BMW

Replacement is recommend with every belt service We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813365
Mfg#:
11281748131
Ships in 1 Business Day
$15.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Accessory Belt - Air Conditioning Compressor

ES#4332887 - 11281744986 - Accessory Belt - Air Conditioning Compressor - Keep your BMWs air conditioning system running at peak efficiency with this dependable. - Meyle - BMW

Keep your BMW’s air conditioning system running at peak efficiency with this dependable. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Meyle - Corporate Logo
ES#:
4332887
Mfg#:
11281744986
Ships on Nov 27, 2026
$9.99 USD
Free Shipping
on orders $49 and up

Turner Motorsport Ultimate Power Pulley And Drive Belt Overhaul System

ES#3521793 - uppke46tuBKT - Turner Motorsport Ultimate Power Pulley And Drive Belt Overhaul System - Includes Accessory Belt System! - Assembled By ECS - BMW

Includes Accessory Belt System! 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with Bosch alternator only

Brand:
Assembled By ECS - Corporate Logo
ES#:
3521793
Mfg#:
UPPKE46TUBKT
In Stock
ON SALE!
$634.19

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

$578.58 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Mechanical A/C Belt Tensioner Assembly

ES#1892307 - 11281433571 - Mechanical A/C Belt Tensioner Assembly - This replacement mechanical A/C belt tensioner assembly from Febi Bilstein restores the precise, constant tension your accessory drive system requires. - Febi - BMW

This replacement mechanical A/C belt tensioner assembly from Febi Bilstein restores the precise, constant tension your accessory drive system requires. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
1892307
Mfg#:
11281433571
Ships in 1 day
$64.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic Alternator Belt Tensioner Assembly

Hydraulic tensioner assembly for alternator/water pump belt, does not come with roller/pulley 10X Entries For Our 25th Anniversary Sweepstakes!

Brand:
Bremmen Parts - Corporate Logo
ES#:
5480937
Mfg#:
11287838797
Ships on Sep 28, 2026
Auto Notify
$59.99 USD
This product is lifetime replacement eligible Lifetime Replacement

More About Engine Pulley Parts

Pulleys drive accessories essential to vehicle operation. Whether you need to install a stock original equipment pulley during a repair, or improve engine performance and appearance with a lightweight aluminum or underdrive pulley, count on ECS Tuning for pulley solutions that work.

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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