FEBI BILSTEIN 21905 V-Ribbed Belt Tensioner

Compatible with AUDI COUPE B3 (89, 8B3) , AUDI 80 B4 Sedans (8C2) , AUDI 80 B4 Avant (8C5) Show more info
Ensures optimal tension for your V-ribbed belt, maintaining efficient accessory drive performance. Designed for reliable operation and longevity.
44.45 EUR
inc. VAT 21%
In stock 5
Delivery 1 day (30.03.2026)
PN 21905
Make FEBI BILSTEIN
EAN 4027816219057

This FEBI BILSTEIN V-ribbed belt tensioner, part number 21905, is engineered to provide consistent and accurate tension to your vehicle's V-ribbed belt. Proper belt tension is crucial for the smooth and efficient operation of accessories such as the alternator, power steering pump, and air conditioning compressor. A worn or improperly tensioned belt can lead to reduced performance of these accessories, premature belt wear, and potential noise. This tensioner is designed to maintain the correct tension throughout its service life, ensuring optimal power transfer and preventing slippage. FEBI BILSTEIN is known for its commitment to quality and precision engineering. This tensioner is manufactured to meet or exceed original equipment specifications, offering a dependable solution for your vehicle's needs. Installation is straightforward, making it a practical choice for maintenance or repair. By replacing a faulty tensioner with this high-quality part, you can restore proper function to your accessory drive system, prevent further damage to the belt and other components, and ensure the reliable operation of your vehicle's essential systems.

  • Maintains optimal V-ribbed belt tension
  • Ensures efficient accessory drive operation
  • Promotes longer belt life
  • Designed for reliable and consistent performance
  • High-quality manufacturing by FEBI BILSTEIN
  • Meets or exceeds OE specifications
  • Helps prevent belt slippage and noise
  • Essential for alternator, power steering, and A/C function
Roller support surface width [mm]
+25
Housing material
Aluminum
Roller material
Metal
Outer diameter [mm]
76
Operating mode
automatic
OE-number
078 903 133 AB
  • AUDI
    • COUPE B3 (89, 8B3)
      • 2.6 (110kW/150PS)
      • 2.8 (128kW/174PS)
      • 2.6 quattro (110kW/150PS)
      • 2.8 quattro (128kW/174PS)
    • 80 B4 Sedans (8C2)
      • 2.6 (110kW/150PS)
      • 2.8 (128kW/174PS)
      • 2.6 quattro (110kW/150PS)
      • 2.8 quattro (128kW/174PS)
    • 80 B4 Avant (8C5)
      • 2.6 (110kW/150PS)
      • 2.6 quattro (110kW/150PS)
      • 2.8 quattro (128kW/174PS)
      • 2.8 (128kW/174PS)
    • CABRIOLET B3 (8G7)
      • 2.6 (110kW/150PS)
      • 2.8 (128kW/174PS)
    • A8 D2 (4D2, 4D8)
      • 2.8 (128kW/174PS)
      • 2.8 quattro (128kW/174PS)
      • 2.8 (142kW/193PS)
      • 2.8 quattro (142kW/193PS)
      • 2.8 (120kW/163PS)
      • 2.8 quattro (120kW/163PS)
    • A4 B5 (8D2)
      • 2.6 (110kW/150PS)
      • 2.8 (128kW/174PS)
      • 2.6 quattro (110kW/150PS)
      • 2.8 quattro (128kW/174PS)
      • 2.8 (142kW/193PS)
      • 2.8 quattro (142kW/193PS)
      • 2.4 (121kW/165PS)
      • 2.4 quattro (121kW/165PS)
      • 1.9 TDI quattro (85kW/116PS)
      • 2.4 (120kW/163PS)
      • 2.4 quattro (120kW/163PS)
    • A6 C4 (4A2)
      • 2.6 (110kW/150PS)
      • 2.8 (128kW/174PS)
      • 2.6 quattro (110kW/150PS)
      • 2.8 quattro (128kW/174PS)
      • 2.6 (102kW/139PS)
    • A6 C4 Avant (4A5)
      • 2.6 (110kW/150PS)
      • 2.8 (128kW/174PS)
      • 2.8 quattro (128kW/174PS)
      • 2.6 quattro (110kW/150PS)
      • 2.6 (102kW/139PS)
    • A4 B5 Avant (8D5)
      • 2.6 (110kW/150PS)
      • 2.6 quattro (110kW/150PS)
      • 2.8 (142kW/193PS)
      • 2.8 quattro (142kW/193PS)
      • 2.4 (121kW/165PS)
      • 2.4 quattro (121kW/165PS)
      • 1.9 TDI (85kW/115PS)
      • 1.9 TDI quattro (85kW/115PS)
      • RS4 quattro (280kW/380PS)
      • 2.4 (120kW/163PS)
      • 2.4 quattro (120kW/163PS)
    • A6 C5 (4B2, 4B4)
      • 2.4 (121kW/165PS)
      • 2.4 quattro (121kW/165PS)
      • 2.8 (142kW/193PS)
      • 2.8 quattro (142kW/193PS)
      • 2.4 (100kW/136PS)
      • 2.4 (125kW/170PS)
      • 2.4 quattro (125kW/170PS)
      • 2.7 T quattro (184kW/250PS)
      • 2.4 (120kW/163PS)
    • A6 C5 Avant (4B5, 4B6)
      • 2.8 quattro (142kW/193PS)
      • 2.4 (121kW/165PS)
      • 2.8 (142kW/193PS)
      • 2.4 quattro (121kW/165PS)
      • 2.4 (100kW/136PS)
      • 2.4 (125kW/170PS)
      • 2.4 quattro (125kW/170PS)
      • 2.7 T quattro (184kW/250PS)
      • 2.4 (120kW/163PS)
    • ALLROAD C5 (4BH)
      • 2.7 T quattro (184kW/250PS)
    • A4 B6 (8E2)
      • 2.4 (125kW/170PS)
      • 2.4 (120kW/163PS)
    • A4 B6 Avant (8E5)
      • 2.4 (125kW/170PS)
      • 2.4 (120kW/163PS)
    • A4 B6 Kabriolets (8H7)
      • 2.4 (125kW/170PS)
      • 2.4 (120kW/163PS)
  • VW
    • PASSAT B5 (3B2)
      • 2.8 V6 Syncro/4motion (142kW/193PS)
      • 2.8 V6 (142kW/193PS)
    • PASSAT B5 Variant (3B5)
      • 2.8 V6 (142kW/193PS)
      • 2.8 V6 Syncro/4motion (142kW/193PS)
    • PASSAT B5.5 (3B3)
      • 2.8 4motion (142kW/193PS)
      • 2.8 (142kW/193PS)
      • 2.8 (140kW/190PS)
      • 2.8 4motion (140kW/190PS)
    • PASSAT B5.5 Variant (3B6)
      • 2.8 4motion (142kW/193PS)
      • 2.8 (142kW/193PS)
      • 2.8 (140kW/190PS)
      • 2.8 4motion (140kW/190PS)
  • SKODA
    • SUPERB I (3U4)
      • 2.8 V6 (142kW/193PS)
      • 2.8 V6 (140kW/190PS)
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