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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Hydraulic Alternator Belt Tensioner Assembly
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URO - Corporate Logo
T#:396757
Part#: 11287838797
In Stock
$ 53.99 USD
Free Shipping on orders $49 and up
Mechanical A/C Belt Tensioner Assembly
For vehicles with production date up to 09/2002
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Bremmen Parts - Corporate Logo
T#:26305100
Part#: 11281433571
In Stock
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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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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URO Aluminum Water Pump Pulley - E39, E46, E53, E60, E83, Z3, Z4 ...
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URO - Corporate Logo
T#:340641
Part#: 11511436590
In Stock
$ 45.99 USD
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$ 45.99 USD
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An upgrade over commonly failing plastic pulley

Water Pump Pulley
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URO - Corporate Logo
T#:638798
Part#: 11517840403
Ships in 2 Business Days
$ 57.99 USD
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Mechanical A/C Belt Tensioner Assembly
For vehicles with production date from 09/2002
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Bremmen Parts - Corporate Logo
T#:32350880
Part#: 11287512758
In Stock
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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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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Rein - Corporate Logo
T#:591711
Part#: 11511436590
In Stock
$ 50.99

This product was last offered at the strikethrough price on
10-22-2026

$ 46.99 USD
Free Shipping on orders $49 and up
$ 46.99 USD
Free Shipping on orders $49 and up
A common failing piece due to the plastic design.

Mechanical Alternator Belt Tensioner Assembly
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URO - Corporate Logo
T#:371980
Part#: 11281427252
Ships in 2 Business Days
$ 50.99 USD
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$ 50.99 USD
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Tensions the belt connecting the water pump, alternator, and power steering pump. Includes roller.
Hydraulic Alternator Belt Tensioner Assembly
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Bremmen Parts - Corporate Logo
T#:55030822
Part#: 11287838797
In Stock
New Item
Sale - Save 20% $ 59.99

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

$ 47.99 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 59.99

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

$ 47.99 USD
Free Shipping on orders $49 and up

Mechanical A/C Belt Tensioner Assembly
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URO - Corporate Logo
T#:384308
Part#: 11287512758
Ships in 2 Business Days
$ 43.99 USD
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Complete tensioner assembly with roller

Belt Tensioner Conversion Kit
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URO - Corporate Logo
T#:600039
Part#: 11287838797K
Back Ordered
$ 82.99 USD
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Update from a mechanical tensioner to a hydraulic style tensioner
Rein - Corporate Logo
T#:53750207
Part#: PKP0124
In Stock
New Item
$ 41.99 USD
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$ 41.99 USD
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Upgrade the Plastic Pulley in Your BMW with an All Aluminum Construction Replacement from Rein
Mechanical A/C Belt Tensioner Assembly
For vehicles with production date up to 09/2002
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URO - Corporate Logo
T#:361998
Part#: 11281433571
Ships in 2 Business Days
$ 53.99 USD
Free Shipping on orders $49 and up
$ 53.99 USD
Free Shipping on orders $49 and up
Complete tensioner assembly with roller


Rein - Corporate Logo
T#:38161721
Part#: 11237513862
Ships in 4 Business Days
$ 92.99 USD
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Hydraulic Alternator Belt Tensioner Roller - 11281748131
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Bremmen Parts - Corporate Logo
T#:30629659
Part#: 11281748131
In Stock
Sale - Save 30% $ 18.99

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

$ 13.29 USD
Free Shipping on orders $49 and up
Sale - Save 30%
$ 18.99

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

$ 13.29 USD
Free Shipping on orders $49 and up

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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Drive Belt Pulley Cap
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URO - Corporate Logo
T#:639224
Part#: 11281727159
In Stock
$ 3.99 USD
Free Shipping on orders $49 and up
Replace that missing protective cap and protect your belt tensioner bearing from debris.

Idler Pulley
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Bremmen Parts - Corporate Logo
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
Free Shipping on orders $49 and up
Sale - Save 25%
$ 19.99

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

$ 14.99 USD
Free Shipping on orders $49 and up

Rein Vibration Damper - 11231438995 - E36, E46, E39, E53
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Rein - Corporate Logo
T#:38195378
Part#: 11231438995
Ships in 4 Business Days
$ 112.99 USD
Free Shipping on orders $49 and up
Water Pump Pulley
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Bremmen Parts - Corporate Logo
T#:58782363
Part#: 11511436590
Ships on Feb 10, 2027
New Item
Sale - Save 20% $ 35.99

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

$ 28.79 USD
Free Shipping on orders $49 and up
Sale - Save 20%
$ 35.99

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

$ 28.79 USD
Free Shipping on orders $49 and up