The 07K 903 315T is a Gates OE-quality accessory drive belt tensioner for Volkswagen models equipped with the 2.5L inline 5-cylinder (BGP/BGQ) engine — including the Beetle, Golf, Jetta, Passat, and Rabbit. As the current VAG supersession of 07K 903 315S / N / J / G, this tensioner maintains correct serpentine belt tension through a durable spring mechanism and precision sealed pulley bearing, keeping belt-driven accessories running quietly and reliably with no modifications required.
$55.00
1 in stock
The 07K 903 315T Drive Belt Tensioner by Gates is an OE-quality accessory drive tensioner for Volkswagen models powered by the 2.5L inline 5-cylinder (BGP/BGQ) engine. This tensioner mounts on the accessory belt drive and automatically maintains the correct belt tension as the engine runs — compensating for belt stretch and damping vibration to keep the belt tracking properly across the alternator and A/C compressor pulleys.
Because the tensioner spring and pulley bearing work continuously under heat, vibration, and belt load, they degrade with mileage. A weakening spring gradually loses its ability to hold consistent belt tension, while the pulley bearing develops roughness and noise. Together, these failures cause belt squeal, erratic belt tracking, and accelerated belt wear. Left unaddressed, a failed tensioner can allow belt slip or complete belt loss — disabling the alternator and A/C compressor simultaneously. Replacing the worn unit with this 07K 903 315T from Gates restores proper belt tension, quiet operation, and protects the entire accessory drive system.
Gates Corporation is one of the world’s leading OE suppliers for belt drive systems, with over a century of engineering experience across automotive, industrial, and commercial applications. Gates engineers the 07K 903 315T to meet Volkswagen’s original specifications for the BGP/BGQ 2.5L 5-cylinder accessory drive — ensuring the tensioner arm geometry, spring rate, and pulley bearing all match factory tolerances precisely. As the current production supersession of 07K 903 315S / N / J / G, this unit incorporates the latest VAG engineering refinements for the application. Furthermore, Gates sources and validates the spring and bearing materials to withstand the thermal and vibration demands of the VW 2.5L engine bay across the full service life of the belt — making it the most current and trusted tensioner replacement available for this engine family.
Catching tensioner failure early prevents belt loss and costly accessory drive damage. Watch for these warning signs:
Belt squeal or chirping from the front of the engine — especially on startup or under A/C load
Belt flutter or oscillation visible at idle or during acceleration
Roughness, resistance, or wobble when spinning the tensioner pulley by hand with the engine off
The tensioner arm fails to maintain firm, consistent pressure against the belt
Uneven or accelerated wear across the width of the accessory belt
If any of these indicators appear, replace the tensioner promptly to avoid belt failure.
OEM Reference: 07K 903 315T (current VAG supersession)
Brand: Gates — OE-quality belt drive supplier
Durable spring mechanism maintains consistent belt tension under heat and vibration
Precision sealed pulley bearing for smooth, quiet rotation throughout service life
OE-spec arm geometry and spring rate for correct belt deflection and tracking
Direct-fit replacement — no modifications required
Helps eliminate belt squeal, flutter, and premature accessory belt wear
First, replace the accessory belt when installing a new tensioner — both components wear in tandem, and a new tensioner paired with a worn belt is an incomplete repair
Next, inspect all idler pulleys on the accessory drive for bearing noise, resistance, or wobble; replacing them together with the tensioner ensures a complete, lasting service
Also, confirm the tensioner arm pivots smoothly throughout its full range of motion after installation — any stiffness or binding indicates a defective unit
Finally, verify correct belt routing and confirm the belt seats fully in all pulley grooves before starting the engine
Always verify fitment by VIN before ordering. Multiple variants may exist within the same model year.
07K 903 315T (VAG OEM — current supersession)
07K 903 315S / 07K 903 315N / 07K 903 315J / 07K 903 315G (VAG OEM — superseded)
Gates 38315
| Weight | 2.2 lbs |
|---|---|
| Dimensions | 7.0 × 5.0 × 4.0 in |
| Year | Make | Model | Engine | Notes |
|---|---|---|---|---|
| 2012-2013 | Audi | TT RS | 2.5T | |
| 2006, 2012 | Volkswagen | Beetle | 2.5L | |
| 2010, 2014 | Volkswagen | Golf VI | 2.5L | |
| 2005, 2008 | Volkswagen | Jetta V | 2.5L | |
| 2009, 2014 | Volkswagen | Jetta VI | 2.5L | |
| 2012, 2014 | Volkswagen | Passat | 2.5L | |
| 2006, 2009 | Volkswagen | Rabbit | 2.5L |
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