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BMW Drive Belts & V-Belts

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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Bav Auto Ratcheting Serpentine Belt Wrench Kit

10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:580390

Part#: B8800077

Ships on Feb 1, 2027

Sale - Save 7% $ 67.99

This product was last offered at the strikethrough price on
05-03-2026

$ 62.99 USD

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Sale - Save 7%

$ 67.99

This product was last offered at the strikethrough price on
05-03-2026

$ 62.99 USD

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Used to retract your serpentine belt tensioner. This kit includes 18mm, 5/8 in, 14mm, 13mm, 12mm, sockets and 3/8 in and 1/4 in drive adapters

Bav Auto Serpentine Belt Tensioner Tool Set

10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:580361

Part#: B8800034

In Stock

$ 31.03 USD

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$ 31.03 USD

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This specialty wrench is required to retract the serpentine belt tensioner - necessary in order to remove or install your accessory drive belt. Includes tensioner locking-pin which conveniently holds your tensioner in place while changing belt.

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M7 Lightweight Crank Pulley - Stock Size

Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:12774050

Part#: 53-3M7101-0

In Stock

$ 159.99

This product was last offered at the strikethrough price on
08-31-2026

$ 140.99 USD

Limited Qty Sale

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Qty

$ 159.99

This product was last offered at the strikethrough price on
08-31-2026

$ 140.99 USD

Limited Qty Sale

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Bav Auto Stretch Belt Installer Tool

10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:580430

Part#: B8800123

In Stock

Sale - Save 5% $ 16.99

This product was last offered at the strikethrough price on
05-03-2026

$ 16.19 USD

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Qty

Sale - Save 5%

$ 16.99

This product was last offered at the strikethrough price on
05-03-2026

$ 16.19 USD

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Bav Auto's stretch belt installer tool is helpful in installing some BMW accessory belts.

Bav Auto Stretch Belt Installer Tool

10X Entries Into Our F80 M3 Sweepstakes Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:580415

Part#: B8800108

In Stock

Sale - Save 55% $ 19.99

This product was last offered at the strikethrough price on
05-03-2026

$ 8.99 USD

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Qty

Sale - Save 55%

$ 19.99

This product was last offered at the strikethrough price on
05-03-2026

$ 8.99 USD

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This universal stretch belt installer can aid in drive belt installation. Recommended in conjunction with B8800123

Vaico Mechanical Accessory Belt Tensioner - BMW B46/48 B58

Earn 5% back in Turner Rewards on orders placed 10/26/26 - 10/31/26. Redeem 11/26/26 - 12/1/26. Terms & conditions apply

T#:50346424

Part#: 11288580360

Special Order: No Guaranteed ETA

$ 68.99 USD

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$ 68.99 USD

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Accessory belt tensioners provide tension to the belt drive system, ensuring the belt is able to properly turn engine accessories without slipping. If your tensioner has failed, replace it with a brand-new unit to ensure proper water pump and alternator functionality.

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BMW Drive Belts & V-Belts

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Bav Auto Ratcheting Serpentine Belt Wrench Kit

Bav Auto Serpentine Belt Tensioner Tool Set

M7 Lightweight Crank Pulley - Stock Size

Bav Auto Stretch Belt Installer Tool

Bav Auto Stretch Belt Installer Tool

Vaico Mechanical Accessory Belt Tensioner - BMW B46/48 B58

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