ECS BMW Drive Belts & V-Belts for BMW X Series E83 (2004-2010)

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Your BMW's drive belts are wear items, and will degrade and crack over time. Don't wait until you have a belt failure... don't get stranded! Replacing your BMW's belts, such as the alternator belt, power steering belt, air conditioning AC belt, or serpentine belt is a low cost insurance policy to preventing a break down -- or worse, engine damage. We recommend checking your belts every 10,000 miles. If your belts have excessive cracks, dry rot, missing teeth and/or grooves, are cause noise, it's time for new ones.

While also inspecting your serpentine belts, also check for wear or resistance in the pulleys. The tensioner pulley and deflection pulley are the primary sources for belt squealing. The rubber-isolated pulleys can also break apart, leading to total belt failure. We sell the tensioner and deflection pulleys for the M50 engine family used in the E34, E36, E39, E46, X5, Z3, and Z4.

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E36/E46/Z3/Z4 ECS Tuning Aluminum Water Pump Pulley - Black
E36/E46/Z3/Z4 ECS Tuning Aluminum Water Pump Pulley - Black
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:363707
Part#: 001977ECS03A
In Stock
Sale - Save 5% $ 104.99

This product was last offered at the strikethrough price on
06-13-2026

$ 99.74 USD
Free Shipping
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Sale - Save 5%
$ 104.99

This product was last offered at the strikethrough price on
06-13-2026

$ 99.74 USD
Free Shipping
Add to Wish List
Most of the pulleys on your BMW engine are plastic, which become brittle and frail over time and from engine bay heat. A failed pulley could leave you stranded which is why it is vital to inspect the pulleys during routine maintenance. This is an aluminum version of the stock water pump pulley used on the M50/M52/M52TU/M54 engine in the E36, E46, Z3, Z4, and other models. It uses the same hardware and the original belt as the stock plastic pulley. But the aluminum will last much longer.
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ECS Tuning Performance Kevlar Reinforced Belt - N52
ECS Tuning Performance Kevlar Reinforced Belt - N52
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:5858454
Part#: 6PK1990
Ships on Aug 3, 2026
$ 45.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 45.99 USD
Free Shipping on orders $49 and up
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Kevlar-reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM style belts.
ECS Performance Kevlar Reinforced Accessory Belt - E46 E39 E53 E63 E83 Z3 - M52tu M54 Engine (Also for use with S54 PPK)
ECS Performance Kevlar Reinforced Accessory Belt - E46 E39 E53 E63 E8...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:639025
Part#: 6PK1538
Ships on Aug 24, 2026
$ 35.99 USD
Free Shipping on orders $49 and up
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$ 35.99 USD
Free Shipping on orders $49 and up
Add to Wish List
ECS Tuning Performance Kevlar-reinforced belts give you that extra peace of mind! Kevlar reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM style belts. ECS Tuning Performance Kevlar-reinforced belts have been put through a series of multiple tests: Tensile strength Elongation Hardness Temperature and oil resistance per standard JASO E 109-94 Flex testing per SAE J2432.
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ECS Tuning Performance Kevlar Reinforced Accessory Belt - A/C - E46 E39 E60 E83 E53 E85 M54 (09/2002+)
ECS Tuning Performance Kevlar Reinforced Accessory Belt - A/C - E46 E...
affirm Starting At 0% APR - Subject To Eligibility. See Lending Terms
ECS - Corporate Logo
T#:20979670
Part#: 4PK863
In Stock
$ 26.99 USD
Free Shipping on orders $49 and up
Add to Wish List
$ 26.99 USD
Free Shipping on orders $49 and up
Add to Wish List
Replaces BMW # 11287512762, 11281437450, and 11281437872 ECS Tuning Performance Kevlar reinforced belts give you that extra piece of mind! Kevlar reinforced belts experience less elongation over time minimizing the amount of belt adjustment needed as well as offering a higher shock and impact resistance compared to OEM style belts. ECS Tuning Performance Kevlar reinforced belts have been put through a series of multiple tests such. Tensile strength Elongation Hardness Temperature and oil resistance per standard JASO E 109-94 Flex testing per SAE J2432.
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