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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 |
