BMW Drive Belts & V-Belts for BMW G01 X3 xDrive30i B46 2.0L

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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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Genuine BMW Accessory Belt Service Kit - B38 B46/48 B58
Genuine BMW Accessory Belt Service Kit - B38 B46/48 B58
Genuine BMW - Corporate Logo
T#:577317
Part#: 11288613707KT
In Stock
$ 227.99 USD
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$ 227.99 USD
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Avoid inconvenience and roadside issues with ECS Tuning's comprehensive kit designed for BMW owners. Don't get stranded due to a failed accessory belt impacting the alternator's charging ability. Over time, the tensioner and belt wear out, leading to potential failure. ECS Tuning's kit is assembled to address this concern, including a Genuine BMW accessory belt, belt tensioner assembly, and necessary hardware. Keep your BMW's belt drive system in optimal condition with this convenient, all-inclusive kit.

Key Benefits:

  • Prevents inconvenience from belt failure
  • Comprehensive kit for servicing the belt drive system
  • Includes Genuine BMW parts for reliability
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Genuine BMW Mechanical Accessory Belt Tensioner - BMW B46/48 B58
Genuine BMW Mechanical Accessory Belt Tensioner - BMW B46/48 B58 ...
Genuine BMW - Corporate Logo
T#:573281
Part#: 11288580360
In Stock
4% off MSRP $ 197.99

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

$ 190.99 USD
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4% off MSRP
$ 197.99

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

$ 190.99 USD
Free Shipping
Add to Wish List
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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OEM Accessory Belt Service Kit - B46/48 B58
OEM Accessory Belt Service Kit - B46/48 B58
10X Entries Into Our F80 M3 Sweepstakes
Packaged by Turner - Corporate Logo
T#:587399
Part#: 112886137071ABKT
In Stock
Sale - Save 19% $ 121.99

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

$ 98.77 USD
Free Shipping
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Sale - Save 19%
$ 121.99

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

$ 98.77 USD
Free Shipping
Add to Wish List
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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Genuine BMW Engine Harmonic Balancer & Crank Pulley - BMW Gen1 B46 (B46A)
Genuine BMW Engine Harmonic Balancer & Crank Pulley - BMW Gen1 B46 (B...
For early models with the Gen1 B46 (B46A) engine only
Genuine BMW - Corporate Logo
T#:535740
Part#: 11238638446
Ships in 1-2 days
8% off MSRP $ 782.99

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

$ 716.99 USD
Free Shipping
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8% off MSRP
$ 782.99

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

$ 716.99 USD
Free Shipping
Add to Wish List
Harmonic balancers protect your engine from vibrations caused by the combustion process. If your balancer is showing signs of failure and your engine is vibrating excessively, it is best to replace this as soon as possible to prevent damage to the crankshaft and internal engine components.
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