Free additional power to your M3’s rear wheels without sacrificing or compromising your BMW’s reliability.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For vehicles with a production date from 05/2008+ & a counterclockwise rotating Power Steering Pump
Runs on water pump and alternator belt, used on both mechanical and hydraulic tensioner systems
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms We Price Match - Give Us A Call or Chat! For vehicles with a production date up to 04/2008
Hydraulic tensioner for water pump belt, just tensioner, does not come with relay lever assembly
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
21803
Mfg#:
11287835417
Ships in 4 Business Days
4% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$165.99
This product was last offered at the strikethrough price on 06-04-2026
Everything you need to service your belt drive system using genuine BMW components
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For vehicles with production date from 04/2008
Remove and install OAD alternator pulleys
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Brand:
ES#:
11415
Mfg#:
BTA-13PCS
In Stock
ON SALE!
SAVE 30%
$78.99
This product was last offered at the strikethrough price on 05-02-2026
Hydraulic tensioner pulley for alternator/water pump belt, does not come with tensioner.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
Brand:
ES#:
21809
Mfg#:
11287838194
In Stock
10% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$250.99
This product was last offered at the strikethrough price on 06-04-2026
Our Red Kevlar accessory Belts are both an aesthetic improvement and a performance alternative to a traditional belt. Replaces BMW # 11287837898
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
Helps guide and keep tension on the belt.
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For Vehicles With A Counterclockwise Power Steering Pump Only
Brand:
ES#:
254057
Mfg#:
11287841531
Ships in 1 day
10% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$123.99
This product was last offered at the strikethrough price on 06-03-2026
Runs on water pump and alternator belt, used on both mechanical and hydraulic tensioner systems
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes!
For vehicles with a production date up to 04/2008
Brand:
ES#:
4818523
Mfg#:
11287841228
In Stock
ON SALE!
SAVE 22%
$19.99
This product was last offered at the strikethrough price on 05-02-2026
Possibly the best horsepower-per-dollar available anywhere. No downsides, no compromises!
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms 10X Entries For Our 25th Anniversary Sweepstakes! Adds up to 10-14hp and 7-9ft/lbs torque on a stock M3 For vehicles with a production date from 05/2008+ & a counterclockwise rotating Power Steering Pump
Brand:
ES#:
3251754
Mfg#:
PPK-S65-LKT
Ships on Nov 4, 2026
ON SALE!
SAVE 30%
$535.99
This product was last offered at the strikethrough price on 05-02-2026
Runs on water pump and alternator belt, used on both mechanical and hydraulic tensioner systems
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms For vehicles with a production date up to 04/2008
Brand:
ES#:
21817
Mfg#:
11287841228
In Stock
8% off MSRP
MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.
$123.34
This product was last offered at the strikethrough price on 06-04-2026
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.
Lifetime Replacement
