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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

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T#:363707

Part#: 001977ECS03A

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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

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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 ...

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T#:20979672

Part#: 6PK1460

Ships in 4 Business Days

Sale - Save 15% $ 33.99

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

$ 28.89 USD

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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

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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

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$ 100.99

This product was last offered at the strikethrough price on
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$ 85.84 USD

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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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Mechanical A/C Belt Tensioner Assembly

For vehicles with production date up to 09/2002

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T#:26305100

Part#: 11281433571

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Sale - Save 25% $ 60.99

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

$ 45.74 USD

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This product was last offered at the strikethrough price on
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ECS Performance Kevlar Reinforced Accessory Belt - E46 E39 E53 E63 E8...

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T#:639025

Part#: 6PK1538

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Sale - Save 30% $ 35.99

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

$ 25.19 USD

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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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Mechanical A/C Belt Tensioner Assembly

For vehicles with production date from 09/2002

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T#:32350880

Part#: 11287512758

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Sale - Save 30% $ 52.99

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

$ 37.09 USD

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Hydraulic Alternator Belt Tensioner Assembly

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T#:55030822

Part#: 11287838797

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Sale - Save 20% $ 59.99

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

$ 47.99 USD

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ECS Tuning Performance Kevlar Reinforced Accessory Belt - A/C - BMW ...

For vehicles with production date up to 09/2002

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T#:21693590

Part#: 5PK863

Ships in 4 Business Days

Sale - Save 35% $ 26.99

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

$ 17.54 USD

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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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Meyle Idler Pulley

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T#:369422

Part#: 11287841228

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Sale - Save 62% $ 33.99

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

$ 13.00 USD

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

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!

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

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Sale - Save 40%

$ 26.99

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

$ 16.19 USD

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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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Hydraulic Alternator Belt Tensioner Roller - 11281748131

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T#:30629659

Part#: 11281748131

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Sale - Save 30% $ 18.99

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

$ 13.29 USD

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$ 18.99

This product was last offered at the strikethrough price on
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$ 13.29 USD

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This pulley is mounted along with the hydraulic belt tensioner but can be replaced on its own. It is used for the main drive belt on the M50-M54 family engines (M50, M50TU, M52, S52, M52TU, M54, M56, and S54 engines). This is the same belt that covers the water pump/alternator/power steering systems. Replacement is a very easy procedure (requires fan removal) and will have your engine purring in no time. Belt replacement is strongly recommended at the same time. If you have a mechanical belt tensioner, the pulley can only be replaced with a new tensioner.

This high-quality replacement from Bremmen Parts is designed for exact fitment on your BMW. Whether you're looking to complete much-needed preventative maintenance, or replacing a failed roller, choose this component from Bremmen Parts for a lasting repair.

If you need the hydraulic belt tensioner, click here.

This item is 70mm Diameter. Please check the diameter before ordering.

This tensioner pulley fits the following BMWs: 1991-1995 E34 525i (M50 engine) 1992-1999 E36 325i, 325is, 328i, 328is, 323is 1995-1999 E36 M3 (M3 3.0 & M3 3.2 liter) 1997-2003 E39 525i, 528i, 530i - Only for Hydraulic Tensioner 1999-2000 E46 323i, 323Ci, 328i, 328Ci - Only for Hydraulic Tensioner 2001-2005 E46 325i, 325Ci, 325xi, 330i, 330Ci, 330xi - Only for Hydraulic Tensioner 2001-2006 E46 M3 coupe & convertible - Only for Hydraulic Tensioner 2000-2006 X5 3.0 liter (E53 chassis) 2004 E60 525i, 530i (M54 engine) 1997-2002 Z3 & MZ3 2.5, 2.8, 3.0, M Roadster, M Coupe 2003-2009 Z4 M Coupe and Roadster

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Idler Pulley

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T#:30629656

Part#: 11287841228

In Stock

Sale - Save 25% $ 19.99

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

$ 14.99 USD

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Sale - Save 25%

$ 19.99

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

$ 14.99 USD

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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!

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

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Qty

Sale - Save 35%

$ 26.99

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

$ 17.54 USD

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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.

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Water Pump Pulley

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T#:58782363

Part#: 11511436590

Ships on Feb 1, 2027

Sale - Save 20% $ 35.99

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

$ 28.79 USD

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Qty

Sale - Save 20%

$ 35.99

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

$ 28.79 USD

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