BMW Deflection Pulley 11288511737 | Genuine BMW

Genuine BMW Accessory Drive Belt Idler Pulley 11288511737

The Genuine BMW Deflection Pulley 11288511737 is an important component of the BMW accessory belt drive system. Also known as an idler pulley, guide pulley or serpentine belt pulley, it helps guide the ribbed accessory belt through its correct routing and supports smooth operation of the belt-drive system.

BMW OE 11 28 8 511 737 is listed as a deflection pulley and is used in accessory belt systems on selected BMW vehicles, particularly 3.0-litre diesel applications.

BMW Part Details

Part Number: 11288511737
BMW OE Number: 11 28 8 511 737
Part Description: Deflection Pulley
Also Known As: Idler Pulley, Accessory Belt Idler Pulley, Serpentine Belt Idler Pulley, Guide Pulley
Part Type: Accessory Drive Belt Component
Brand: Genuine BMW

Compatible BMW Models

Depending on engine and vehicle configuration, BMW part 11288511737 is listed for applications including:

BMW 5 Series F10 – 535d / 535d xDrive
BMW 7 Series F02 – 740Ld xDrive
BMW X5 F15 – xDrive35d
Selected BMW 5 Series, 6 Series, 7 Series, X5 and X6 diesel applications
Selected N57/N57N/N57Z/N57X engine configurations

BMW’s parts catalogue also shows this part across various F07, F10, F11, F12, F13, F06, F01/F02, E70, F15, E71 and F16 applications. Exact compatibility depends on the engine and accessory-belt configuration.

What Does the BMW Deflection Pulley Do?

The deflection pulley guides the ribbed accessory/serpentine belt around the engine’s accessory drive system. It works together with the belt and tensioner to maintain correct belt routing and smooth rotation.

On applicable BMW diesel models, the belt drive can serve systems including the air-conditioning and power-steering drive.

Symptoms of a Worn BMW Idler Pulley

A worn or damaged deflection pulley can contribute to:

Squealing or unusual belt-area noises
Grinding or humming sounds
Excessive pulley movement or play
Accessory belt vibration
Uneven belt wear
Incorrect belt tracking
Premature accessory belt failure

When replacing the pulley, it is recommended to inspect the serpentine belt and belt tensioner at the same time.

Buy BMW 11288511737 in Nairobi, Kenya

Looking for a BMW deflection pulley 11288511737 in Nairobi?

Bavarian Trading Company supplies BMW spare parts in Nairobi and Kenya, with a garage and parts shop conveniently located at Adams Arcade, off Ngong Road.

We can also assist with BMW diagnostics, parts identification, installation and servicing.

Order BMW 11288511737 today. Send us your BMW VIN/chassis number before ordering and we can help confirm whether this is the correct deflection pulley for your BMW.

Important Fitment Note

BMW accessory belt systems differ between engines, production dates and vehicle specifications. Always confirm fitment using your VIN/chassis number before purchasing.