HomeEngine > Valve Train ComponentsGMB 480-9850 Engine Timing Belt Idler
Part #: 480-9850

GMB 480-9850 Engine Timing Belt Idler

⚙️ 38 vehicles fit this part
🔍
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$22.53Free Shipping
🚚Free ShippingNo Cost to Continental U.S.
🔄Free Returns*Wrong fit? No cost
🛡️60-Day ReturnsMoney back guarantee
*Free return shipping only qualifies if our fitment verification tool is used.
🔥
✅ In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
🚗Fitment: Audi and Volkswagen, A4, A4 Quattro, A6, A6 Quattro, Allroad Quattro, Passat, RS4, and S4
🔄Easy Returns — Return within 60 days for a full refund
🚚Fast Shipping — Most orders ship same business day before 1pm CST

Reliable Engine Timing Belt Idler for Audi and Volkswagen Models

The GMB 480-9850 engine timing belt idler is designed to maintain proper tension and alignment of serpentine and V-belts in select Audi and Volkswagen vehicles. Engineered with a durable metal pulley, this idler supports smooth belt operation and helps prevent premature wear.

  • Compatible with Audi A4, A4 Quattro, A6, A6 Quattro, Allroad Quattro, RS4, S4, and Volkswagen Passat models
  • Metal pulley construction for enhanced durability and heat resistance
  • Single groove pulley designed for serpentine and V-belt systems
  • Drive belt pulley diameter: 1 mm
  • Part number 480-9850 ensures precise fit and function

Durable Metal Pulley with Single Groove Design

This engine timing belt idler features a metal pulley with a single groove, specifically engineered to accommodate both serpentine and V-belt configurations. The metal construction provides strength and resistance to wear caused by constant belt tension and engine heat. With a drive belt pulley diameter of 1 mm, the idler maintains optimal belt alignment and tension, contributing to the overall reliability of the engine's valve train components.

Compatible Vehicles and Applications

The GMB 480-9850 is compatible with a range of Audi and Volkswagen vehicles, including the Audi A4, A4 Quattro, A6, A6 Quattro, Allroad Quattro, RS4, S4, and the Volkswagen Passat. This part is essential for maintaining proper timing belt function in these models, ensuring smooth engine operation and preventing belt slippage or misalignment.

  • Prevents belt slippage and misalignment in timing belt systems
  • Reduces wear on serpentine and V-belts
  • Maintains proper tension for engine valve train components
  • Helps avoid engine performance issues related to belt failure
  • Supports longevity of timing belt and associated components

Installation Notes and Tips

When installing the GMB 480-9850 engine timing belt idler, ensure the belt tension is adjusted according to manufacturer specifications for your specific Audi or Volkswagen model. Inspect the serpentine and V-belts for wear or damage and replace if necessary. Proper alignment of the idler pulley is critical to prevent premature belt wear and maintain engine timing accuracy.

Quality Assurance and Warranty

GMB manufactures this engine timing belt idler to meet or exceed OEM standards, providing reliable performance for your Audi or Volkswagen vehicle. While specific warranty details are not provided, GMB parts are generally backed by quality assurance processes to ensure durability and fitment accuracy. Using part number 480-9850 helps guarantee compatibility and consistent operation within the engine valve train system.

BrandGMB
Part Number480-9850
Drive Belt Pulley Diameter (1) (mm)1
Pulley / Belt TypeSerpentine & v-belt
Pulley Groove Quantity (1)1
Pulley Material (1)Metal

This part fits 38 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005AudiAllroad Quattro2.7LV6N/A
2005VolkswagenPassat2.8LV6N/A
2004AudiA6 Quattro2.7LV6N/A
2004AudiAllroad Quattro2.7LV6N/A
2004VolkswagenPassat2.8LV6N/A
2003AudiA6 Quattro2.7LV6N/A
2003AudiAllroad Quattro2.7LV6N/A
2003VolkswagenPassat2.8LV6N/A
2002AudiA6 Quattro2.7LV6N/A
2002AudiAllroad Quattro2.7LV6N/A
2002AudiRS42.7LV6N/A
2002AudiS42.7LV6N/A
2002VolkswagenPassat2.8LV6N/A
2001AudiA42.8LV6N/A
2001AudiA4 Quattro2.8LV6N/A
2001AudiA62.8LV6N/A
2001AudiA6 Quattro2.8LV6N/A
2001AudiA6 Quattro2.7LV6N/A
2001AudiAllroad Quattro2.7LV6N/A
2001AudiS42.7LV6N/A
2001VolkswagenPassat2.8LV6N/A
2000AudiA42.8LV6N/A
2000AudiA4 Quattro2.8LV6N/A
2000AudiA62.8LV6N/A
2000AudiA6 Quattro2.7LV6N/A
2000AudiA6 Quattro2.8LV6N/A
2000AudiS42.7LV6N/A
2000VolkswagenPassat2.8LV6N/A
1999AudiA42.8LV6N/A
1999AudiA4 Quattro2.8LV6N/A
1999AudiA62.8LV6N/A
1999AudiA6 Quattro2.8LV6N/A
1999VolkswagenPassat2.8LV6N/A
1998AudiA42.8LV6N/A
1998AudiA4 Quattro2.8LV6N/A
1998AudiA62.8LV6N/A
1998AudiA6 Quattro2.8LV6N/A
1998VolkswagenPassat2.8LV6N/A

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

078109244H480985085525T41227

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.