1128 7598 832 Accessory Drive Belt Tensioner for BMW 1 Series F20 F21 3 Series F30 MINI

◆ This accessory drive belt tensioner is a direct replacement for the original BMW/MINI unit, designed to maintain proper tension on the serpentine belt that drives the alternator, water pump, and A/C compressor.

◆ The OEM reference number is 1128 7598 832 (11287598832). BMW‘s parts catalog designates this component as “friction wheel” (摩擦轮) . An adjacent or related reference is 11287598833 .

◆ The tensioner is engineered to OEM standard dimensions for direct fitment onto the engine front accessory drive without modification. Aftermarket pulley dimensions are approximately 75 mm diameter and 26 mm width .

◆ It is primarily designed for BMW and MINI models equipped with the N13 and related engine families, covering the 1 Series (F20/F21: 114i, 116i, 118i, 120i), 3 Series (F30/F35: 316i, 316Li, 320i ed), and MINI R55/R56/R57/R60 variants .

◆ This product is a serpentine belt tensioner assembly manufactured to meet original quality standards for tension control, bearing durability, and fit.

◆ Part Number: 1128 7598 832 / 11287598832

◆ Related Reference: 11287598833

◆ Component Type: Accessory Drive Belt Tensioner / Friction Wheel

◆ Vehicle Make: BMW / MINI

◆ Pulley Diameter: Approx. 75 mm

◆ Pulley Width: Approx. 26 mm

◆ Catalog Designation: Friction Wheel (摩擦轮)

◆ Note: Mounting bolts and belt are typically separate parts and are not included

◆ OEM Standard Fit: Manufactured to exact original specifications for a direct, hassle-free replacement.

◆ Automatic Tension Control: Spring-loaded design maintains consistent belt tension throughout the accessory drive system’s operating range.

◆ Durable Construction: Built with materials resistant to heat, friction, and engine bay conditions for long service life.

◆ Noise Reduction: Eliminates belt squeal and chirping caused by a worn or seized tensioner pulley .

◆ BMW 1 Series F20: 114i, 116i, 118i, 120i (selected years)

◆ BMW 1 Series F21: 116i (selected years)

◆ BMW 3 Series F30/F35: 316i, 316Li, 320i ed (selected years)

◆ MINI Cooper R56 LCI: One 55kW (selected markets)

◆ MINI Cooper S R55 LCI Clubman: selected variants

◆ MINI Cooper R57 Cabrio: selected variants

◆ MINI Countryman R60 One: selected variants

◆ Note: Verify against your vehicle's original part number and engine code before ordering, as fitment may vary by market and production period.

Q1: Is this a genuine BMW/MINI part?

A: The 11287598832 reference is the original equipment part number. Both genuine BMW/MINI and aftermarket equivalents (such as INA, FEBI, and Gates) are available that match the original fit and function .

Q2: How do I confirm if it fits my vehicle?

A: Check your vehicle's existing part number. If your current belt tensioner is stamped with 11287598832, this replacement will fit. Also confirm your vehicle model and engine variant against the compatibility list above. The related reference 11287598833 may also appear in cross-reference data for the same application family .

Q3: What are the symptoms of a failing belt tensioner?

A: Common signs include a squealing or chirping noise from the engine bay, especially on cold start or acceleration; visible belt wear or misalignment; and a tensioner pulley that feels loose or does not spring back properly. If the bearing dries out or the pulley wobbles, you may hear chirping or grinding, see belt dust, or notice the belt tracking off-center . Replacing the tensioner is recommended when these symptoms appear.