Polyforce Belt Tensioner
#KMR689478
Product Overview
PolyForce Belt Tensioners by Kit Masters replace the traditional spring with a longer-lasting, Polymer Torsion Core. They also feature upgraded pulley bearings to drastically extend the life of the belt tensioner.
Features & Benefits
- No Springs Attached - Conventional belt tensioners use springs to hold their position and tension. However, springs can only flex so many times before they fail. PolyForce™ Belt Tensioners replace this spring with a longer lasting, new and unique Polymer Torsion Core. A compressed silicone replaces the spring, thereby eliminating the primary cause of failure.
- Improved Bearings - The other common failure point in a belt tensioner is the bearing. The pulley bearing absorbs a huge amount of vibration and can often fail too soon. PolyForce™ Belt Tensioners have dramatically improved pulley bearings to give them extended life. Our bearing is designed specifically for pulley applications with Outer Ring Rotation and Anti-Vibration Grease (won’t separate).
- No Spring = Less Heat - To demonstrate the difference between tensioners, we ran a PolyForce belt tensioner and a competitor’s belt tensioner along an oblong pulley, which causes it to flex back and forth. After 20 minutes the competitor’s belt tensioner was 62.5% hotter than the PolyForce belt tensioner. Less heat leads directly to longer lasting components and assists in achieving lower under-hood temperatures.
- 2 Year/200,000 Mile Warranty
Interchanges & Equivalent parts:
38504, 3904370, 3907469, 3908163, 3911315, 3912246, 3914086, 3918944, 3922900, 3933725, 3934817, 3934818, 3934831, 3936201, 3936202, 3936203, 3937553, 3973822, 3973823, 3978022, 49501, 689478, 89478, D1186-2445, 6731-62-4110, VKM910015, D1186-2445, 3936201, 49501, 3922900, VKM910015, 3907469, 3936202, 6731-62-4110, 3918944, 3937553, 3912246, 3904370, 89478, 3908163, 3914086, 3936203, 3934818, 38504, 3973822, 3934831, 3911315, 689478, 3934817, 3978022, 3933725, 3973823
