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

Menu

Call Us330-331-2003 ChatLive Chat Text Us!
0 Shopping Cart
Your Vehicle

No Vehicle selected
Please select your vehicle below.

    • 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
garage-red
Your Vehicle Please tap 'Select' to pick a vehicle
Your Vehicle Please tap 'Select' to pick a vehicle
Select

BMW E34 Belt Tensioners

Sort By
Filter By
Return to Top

Mechanical Alternator Belt Tensioner Assembly

ES#2866914 - 11281427252 - Mechanical Alternator Belt Tensioner Assembly - Tensions the belt connecting the water pump, alternator, and power steering pump. Includes roller. - Febi - BMW

Tensions the belt connecting the water pump, alternator, and power steering pump. Includes roller. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
Febi - Corporate Logo
ES#:
2866914
Mfg#:
11281427252
Ships on Oct 16, 2026
$78.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Hydraulic Alternator Belt Tensioner

ES#2575507 - 11281717188 - Hydraulic Alternator Belt Tensioner - Hydraulic tensioner for alternator belt, ideal for servicing high mileage tensioner - Ruville - BMW

Hydraulic tensioner for alternator belt, ideal for servicing high mileage tensioner

Brand:
Ruville - Corporate Logo
ES#:
2575507
Mfg#:
11281717188
Back Ordered
$81.99

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

$78.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Idler Pulley

ES#2534803 - 11281731220 - Idler Pulley - Runs on water pump and alternator belt - URO - BMW

Runs on water pump and alternator belt 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2534803
Mfg#:
11281731220
Ships in 2 Business Days
$22.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

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 6 Business Days
$67.99 USD
Free Shipping
This product is lifetime replacement eligible Lifetime Replacement

Idler Pulley

ES#2158251 - 11281731220 - Idler Pulley - Runs on water pump and alternator belt - Ina - BMW

Runs on water pump and alternator belt We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
2158251
Mfg#:
11281731220
Ships in 2 Business Days
$59.12 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump/Alternator Tensioner Pulley

ES#2534804 - 11281731838 - Water Pump/Alternator Tensioner Pulley - Keep your alternator turning properly. - URO - BMW

Keep your alternator turning properly. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2534804
Mfg#:
11281731838
Ships in 2 Business Days
$17.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump/Alternator Tensioner Pulley

ES#2866943 - 11281731838 - Water Pump/Alternator Tensioner Pulley - Keep your alternator turning properly - Febi - BMW

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

Brand:
Febi - Corporate Logo
ES#:
2866943
Mfg#:
11281731838
Ships on Oct 16, 2026
$25.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Idler Pulley

ES#3235023 - 11281731220 - Idler Pulley - Runs on water pump and alternator belt - Gates - BMW

Runs on water pump and alternator belt

Brand:
Gates - Corporate Logo
ES#:
3235023
Mfg#:
11281731220
Ships on Aug 10, 2026
$43.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Water Pump/Alternator Tensioner Pulley

ES#3215671 - 11281731838 - Water Pump/Alternator Tensioner Pulley - Keep your alternator turning properly. - Ina - BMW

Keep your alternator turning properly. We Price Match - Give Us A Call or Chat!

Brand:
Ina - Corporate Logo
ES#:
3215671
Mfg#:
11281731838
In Stock at Vendor
$41.38

This product was last offered at the strikethrough price on
06-09-2026

$41.35 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Idler Pulley

ES#2813359 - 11281731220 - Idler Pulley - Runs on water pump and alternator belt - Hamburg Tech - BMW

Runs on water pump and alternator belt We Price Match - Give Us A Call or Chat!

Brand:
Hamburg Tech - Corporate Logo
ES#:
2813359
Mfg#:
11281731220
Ships in 2 Business Days
$31.99 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

A/C Tensioner Pulley

ES#21643 - 11281702013 - A/C Tensioner Pulley - Keep your A/C belt tight and turning. - Genuine BMW - BMW

Keep your A/C belt tight and turning.

Brand:
Genuine BMW - Corporate Logo
ES#:
21643
Mfg#:
11281702013
Ships in 10 Business Days
3% off MSRP

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

$490.99

This product was last offered at the strikethrough price on
07-20-2026

$474.99 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

Tensioner Pulley Assembly

ES#2534800 - 11281736724 - Tensioner Pulley Assembly - Keep your alternator turning properly. - URO - BMW

Keep your alternator turning properly. 2X Entries For Our 25th Anniversary Sweepstakes!
We Price Match - Give Us A Call or Chat!

Brand:
URO - Corporate Logo
ES#:
2534800
Mfg#:
11281736724
Back Ordered
$35.99 USD
Free Shipping
on orders $49 and up
This product is lifetime replacement eligible Lifetime Replacement

Let us help you find the parts that fit your BMW

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