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BMW Drive Belts & V-Belts for BMW A90 MKV Supra B58 3.0L

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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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Accessory Belt Tensioner - Mechanical

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T#:32450133

Part#: 11288570439

In Stock

Sale - Save 20% $ 93.99

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

$ 75.06 USD

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$ 93.99

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

$ 75.06 USD

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Genuine BMW Deflection Pulley - 11287589361

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T#:33686

Part#: 11287589361

In Stock

10% off MSRP $ 82.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 74.99 USD

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10% off MSRP

$ 82.99

MSRP stands for Manufacturer's Suggested Retail Price. This is the suggested retail price provided by the manufacturer, supplier or seller.

$ 74.99 USD

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Crankshaft Pulley

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T#:586900

Part#: 11238638534

Ships in 1 Business Day

$ 545.99 USD

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$ 545.99 USD

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This is the main crankshaft pulley commonly referred to as the harmonic balancer.

OEM Accessory Belt Service Kit - B46/48 B58

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T#:587399

Part#: 112886137071ABKT

Ships in 8 Business Days

Sale - Save 20% $ 123.99

This product was last offered at the strikethrough price on
01-03-2026

$ 99.57 USD

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Sale - Save 20%

$ 123.99

This product was last offered at the strikethrough price on
01-03-2026

$ 99.57 USD

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Over time, accessory belts begin to wear out and crack. This can lead to the belt slipping, squeaking, or even snapping. Replace your belts and tensioners on a regular basis to ensure you don't end up stranded on the side of the road with a dead battery or overheated engine due to a bit of simple overlooked maintenance. This kit includes all of the items that will need to be replaced such as the belts, tensioners, and hardware.

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Bav Auto Ratcheting Serpentine Belt Wrench Kit

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T#:580390

Part#: B8800077

In Stock

Sale - Save 10% $ 67.99

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

$ 61.19 USD

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Sale - Save 10%

$ 67.99

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

$ 61.19 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

VAC Harmonic SuperDamper By ATI - B58

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T#:27605443

Part#: ATI-HPCD-B58

Ships on Jun 23, 2026

$ 389.99 USD

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$ 389.99 USD

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Understanding the criticality of harmonic resonance in BMW inline-6 engines, ATI Performance Products has collaborated with VAC Motorsports to craft revolutionary dampers. Designed for BMW 2.5L, 2.8L, 3.0L, and 3.2L straight-6 engines in E36 and E46 M3, E9X, E6X, Z3s, and Z4s, these dampers tackle harmonic vibrations, unlocking heightened horsepower, torque, and longevity. Forget about broken oil pumps and timing chains!

Pairing seamlessly with VAC accessory pulleys, these 7" diameter dampers boast OEM-style timing alignment tabs, ensuring a direct fit over OEM balancers. Notably, all ATI Super Dampers exceed SFI 18.1 Safety Certification for competitive use, making them a must-have for BMW enthusiasts. Benefits extend to eliminating vibration issues with lightweight clutch and flywheel assemblies, reducing wear on bearings, engine accessories, and oil pumps, and harmonizing with underdrive pulleys.

Plus, each package includes the lightweight VAC Billet Crankshaft Pulley, proudly made in the USA for uncompromised quality assurance.

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OEM Continental Accessory Belt - BMW B58A B58C B58D & B46D B48D ...

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T#:29765763

Part#: 6PK1153

Ships in 8 Business Days

$ 18.99 USD

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$ 18.99 USD

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Accessory drive belts keep everything turning off of the crank pulley. Generator, fans, water pumps and AC compressors all rely on this belt to keep everything working properly. If your drive belt is getting old, cracking, glazing, or squeaking, replace it. It's easy to see when the belts are beginning to wear. Visually, the belt will begin to glaze on the underside, making it far less effective. Cracks can appear on the back of the belt from “dry rot” caused by exposure to engine heat or age. Squealing is common on worn belts which basically means that the belt is slipping on pulleys. In either case, your vehicle needs a new belt. Designed for long life, this belt will keep everything turning great and all of your accessories working properly. With a worn belt, accessories aren't working at maximum efficiency. Do not wait for this belt to break to replace. Replace it as part of your next maintenance plans.

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ATI Super Damper / Harmonic Balancer - Stock Size - BMW B58A (Gen1), ...

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T#:43142742

Part#: 918573

In Stock at Vendor

$ 418.99 USD

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$ 418.99 USD

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ATI Super Damper / Harmonic Balancer - 21% Underdrive - BMW B58A (Gen...

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T#:43142744

Part#: 918351

Back Ordered

$ 418.99 USD

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$ 418.99 USD

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This ATI Super Damper is a direct replacement for the OEM Harmonic Balancer, designed to further reduce harmful engine harmonics that could lead to damage to sensitive engine components. The 21% underdrive function of this super damper is designed to greatly increase usable horsepower for racing applications by driving engine accessories slower, reducing overall parasitic power loss.

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ATI Super Damper / Harmonic Balancer - 10% Underdrive - BMW B58A (Gen...

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T#:43142743

Part#: 918352

Back Ordered

$ 451.99 USD

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$ 451.99 USD

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This ATI Super Damper is a direct replacement for the OEM Harmonic Balancer, designed to further reduce harmful engine harmonics that could lead to damage to sensitive engine components. The 10% underdrive function of this super damper is designed to increase usable horsepower by reducing parasitic power loss without greatly affecting engine accessories.

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