Vaico V20-2637 Accessory Drive Belt Tensioner Assembly

Vaico V20-2637 Accessory Drive Belt Tensioner

The Vaico V20-2637 accessory drive belt tensioner assembly is built for BMW belt drive service where correct belt tension and pulley alignment matter. With a 65 mm outer diameter, 154 mm length, 106 mm height, and 88 mm width, this assembly is sized for direct-fit replacement in confirmed BMW applications.

VAICO product line parts are developed for OE-style service work, with application-specific fitment and dimensional accuracy for maintenance on the accessory drive belt system. This tensioner assembly is listed for BMW 328d, 328d xDrive, X3, X5, and 535d applications across 2014-2018 model years.

• Accessory drive belt tensioner assembly for BMW belt system service
• 65 mm outer diameter for pulley-driven accessory belt routing
• Dimensions: 154 mm length, 106 mm height, 88 mm width
• Fits select BMW 328d, 328d xDrive, X3, X5, and 535d applications
• OE-style replacement from Vaico, part number V20-2637

Use this tensioner assembly when servicing the serpentine belt system on BMW diesel applications that require stable belt tension and proper pulley tracking. This part cross-references Dorman HELP 57607 and Four Seasons 37552 for the same application. The part number V20-2637 is also referenced in interchange listings for related OE and aftermarket catalog numbers.

Fitment Details

• Fits 2018 BMW 328d, N/A, with OE No. 11287810807; VAICO
• Fits 2018 BMW 328d xDrive, N/A, with OE No. 11287810807; VAICO
• Fits 2018 BMW X5, N/A, with OE No. 11287810807; VAICO
• Fits 2014-2017 BMW 328d, N/A, Grade: OEM - Made in Germany (Q+); Incl. Drive Belt Idler Pulley; VAICO
• Fits 2014-2017 BMW 328d xDrive, N/A, Grade: OEM - Made in Germany (Q+); Incl. Drive Belt Idler Pulley; VAICO
• Fits 2015-2017 BMW X3, N/A, Grade: OEM - Made in Germany (Q+); Incl. Drive Belt Idler Pulley; VAICO
• Fits 2015-2017 BMW X5, N/A, Grade: OEM - Made in Germany (Q+); Exc. Dynamic Drive; VAICO
• Fits 2014-2016 BMW 535d, N/A, Grade: OEM - Made in Germany (Q+); Exc. Dynamic Drive; VAICO
• Fits 2014-2016 BMW 535d xDrive, N/A, Grade: OEM - Made in Germany (Q+); Exc. Dynamic Drive; VAICO
• Fits 2015 BMW X3, N/A, Grade OEM Engine Crankcase Breather Hose manufactured in Germany.; VAICO
• Fits 2014-2015 BMW X5, N/A, Grade: OEM - Made in Germany (Q+); For vehicles Without Active steering; For vehicles Without Adaptive suspension package Dynamic; VAICO

Common Replacement Symptoms

• Belt squeal or chirping from the accessory drive system
• Uneven belt tracking or visible pulley wobble
• Loss of proper belt tension during engine operation
• Accessory drive noise from a worn tensioner assembly
• Service needs on BMW diesel belt drive components

Installation Notes

Verify OE number 11287810807 and confirm the vehicle notes before ordering, especially for Dynamic Drive, active steering, and adaptive suspension package differences. Match the existing belt routing and inspect the idler pulley, belt condition, and adjacent accessory drive components during installation. The V20-2637 should be installed only on the BMW applications listed above.

Quality Assurance

Vaico and the VAICO product line are used for OE-style replacement parts with application-specific cataloging for European vehicles. This accessory drive belt tensioner assembly is listed with precise dimensional data and confirmed BMW fitment for 2014-2018 diesel applications.