Belt Tensioner Idler Alloy Steel Drive Belt Tensioner Pulley 3976834 3957434 for Cummins B3.9L 4BT

About this item

• Feature: 1. Applicable Model: This belt tensioner idler is suitable for Cummins B3.9L 4BT 6BT 5.9L 6B 6BTA 4BT 4BTA 6D107, with perfect compatibility. 2. Premium Steel Made: Our belt tensioner idler is made of excellent steel, the surface is quenched and heat treated to improve the hardness, wear resistance and fatigue strength. 3. Keep Stable: This pulley could eliminate engine shake, reduce abnormal noise, which automatically adjust the belt to tighten the engine timing belt to maintain normal power. 4. Best State: With the help of damping system, the belt tensioner idler increases the tension and reduces the energy to natural frequency, ensuring that the belt is in the best tension state for long term use. 5. Meet Standards: The performance standard meets the design requirements of the original vehicle, and the matching is good, you can use it at ease. Specification: Item Type: Belt Tensioner Idler Material: Alloy Steel Model: 3976834 3957434 Applicable: For Cummins B3.9L 4BT 6BT 5.9L 6B 6BTA 4BT 4BTA 6D107. Package List: 1 x Belt Tensioner IdlerApplicable Model: This belt tensioner idler is suitable for Cummins B3.9L 4BT 6BT 5.9L 6B 6BTA 4BT 4BTA 6D107, with perfect compatibility. Premium Steel Made: Our belt tensioner idler is made of excellent steel, the surface is quenched and heat treated to improve the hardness, wear resistance and fatigue strength. Keep Stable: This pulley could eliminate engine shake, reduce abnormal noise, which automatically adjust the belt to tighten the engine timing belt to maintain normal power. Best State: With the help of damping system, the belt tensioner idler increases the tension and reduces the energy to natural frequency, ensuring that the belt is in the best tension state for long term use. Meet Standards: The performance standard meets the design requirements of the original vehicle, and the matching is good, you can use it at ease.