Polyforce Belt Tensioner

#KMR689406

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:

20490732, 3281583, 3565151, 38516, 3914095, 3917440, 3934821, 3936205, 3936213, 3937555, 3945527, 3945849, 3957434, 3969564, 3973819, 3976831, 3976834, 49521, 689406, 87436755, 89406, 914086, D1186-2406, RE164876, VKM910021, 38627, 3976831, 3976834, 20490732, 3917440, D1186-2406, 38627, 914086, 3937555, 3936213, 3936205, 87436755, 3945849, 89406, 689406, 38516, VKM910021, 3957434, 3945527, 3973819, 49521, 3565151, RE164876, 3281583, 3914095, 3934821, 3969564