HUMBL — Performance & OE Car Parts, Tools, Coilovers, Exhausts & Sensors. Enthusiast-run auto parts store shipping worldwide from the USA, every part tested on our own project cars.

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BMW F82 M4 Belt Tensioner Pulley

SKU F82-M4-TENS
Price

$79.99

The belt tensioner pulley keeps constant, correct tension on the serpentine belt that drives your alternator, power steering, and air conditioning compressor. A worn tensioner lets the belt slip, squeal, or flap under load, and can eventually strand you with a dead battery or overheated engine.

This tensioner pulley is built to fit the BMW F82 M4 with the S55 twin-turbo inline-six, matching the factory mounting points and pulley diameter for a straightforward swap during belt service.

Direct OEM-fitment design and a durable bearing and spring assembly mean smooth, quiet belt operation and long service life, so you can restore proper tension with confidence rather than guesswork.

Reference: OE/interchange SK39389

Quantity

New

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Happy Humbl Customers

What they’re saying

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"The socket set is top-tier quality. Heavy-duty steel that handles real torque without slipping. Better than the big box store brands honestly."

 Jason M., Ohio

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Ordered brake pads and rotors for my truck. Everything fit perfectly right out of the box. Saved me cash and shipping was surprisingly fast."
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"Incredible service. Needed a specific sensor fast and it arrived a day early. The site is simple to use. Finally found a reliable parts source!"
Mike T., Florida
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