BMW Drive Belts & V-Belts for BMW 3 Series E46 (1999-2005)

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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
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:363707
Part#: 001977ECS03A
In Stock
Sale - Save 10% $ 104.99

This product was last offered at the strikethrough price on
11-07-2026

$ 94.49 USD
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Sale - Save 10%
$ 104.99

This product was last offered at the strikethrough price on
11-07-2026

$ 94.49 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 Accessory Belt - Water Pump & Alternator - E9X M3 S65 4.0L, E46 M3 S54 3.2L
ECS Tuning Performance Kevlar Reinforced Accessory Belt - Water Pump ...
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:20979672
Part#: 6PK1460
Ships in 9 Business Days
Sale - Save 15% $ 33.99

This product was last offered at the strikethrough price on
11-11-2026

$ 28.89 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 15%
$ 33.99

This product was last offered at the strikethrough price on
11-11-2026

$ 28.89 USD
Free Shipping on orders $49 and up
Add to Wish List
Replaces BMW # 11287837898 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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E46 M3, Z4M ECS Tuning Aluminum Water Pump Pulley
E46 M3, Z4M ECS Tuning Aluminum Water Pump Pulley
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:367060
Part#: 002778ECS01
Ships on Dec 18, 2026
Sale - Save 15% $ 100.99

This product was last offered at the strikethrough price on
11-07-2026

$ 85.84 USD
Free Shipping
Add to Wish List
Sale - Save 15%
$ 100.99

This product was last offered at the strikethrough price on
11-07-2026

$ 85.84 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 S54 engine in the E46 M3, MZ3, and Z4M. It's the same size and 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 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...
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:639025
Part#: 6PK1538
In Stock
Sale - Save 30% $ 35.99

This product was last offered at the strikethrough price on
11-11-2026

$ 25.19 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 30%
$ 35.99

This product was last offered at the strikethrough price on
11-11-2026

$ 25.19 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 - BMW E46 E39 E53 Z3 M52TU M54
ECS Tuning Performance Kevlar Reinforced Accessory Belt - A/C - BMW ...
For vehicles with production date up to 09/2002
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:21693590
Part#: 5PK863
Ships in 9 Business Days
Sale - Save 35% $ 26.99

This product was last offered at the strikethrough price on
11-11-2026

$ 17.54 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 35%
$ 26.99

This product was last offered at the strikethrough price on
11-11-2026

$ 17.54 USD
Free Shipping on orders $49 and up
Add to Wish List
Replaces BMW # 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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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...
For vehicles with production date from 09/2002
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:20979670
Part#: 4PK863
In Stock
Sale - Save 40% $ 26.99

This product was last offered at the strikethrough price on
11-11-2026

$ 16.19 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 40%
$ 26.99

This product was last offered at the strikethrough price on
11-11-2026

$ 16.19 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.
Show More Show Less
ECS Tuning Performance Kevlar Reinforced Accessory Belt - A/C - E46 M3, Z4M, Z3M S54 3.2L
ECS Tuning Performance Kevlar Reinforced Accessory Belt - A/C - E46 M...
10X Entries Into Our F80 M3 Sweepstakes 10X Entries For Our Spin To Win Sweepstakes!
ECS - Corporate Logo
T#:23416515
Part#: 5PK830
In Stock
Sale - Save 35% $ 26.99

This product was last offered at the strikethrough price on
11-11-2026

$ 17.54 USD
Free Shipping on orders $49 and up
Add to Wish List
Sale - Save 35%
$ 26.99

This product was last offered at the strikethrough price on
11-11-2026

$ 17.54 USD
Free Shipping on orders $49 and up
Add to Wish List
Replaces BMW # 11287830946 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.
Show More Show Less

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