Performance Drive Belt Tensioner Kit for Dodge Ram 1500 (2009-2010) 5.7L

Heavy-Duty Serpentine Drive Belt and Tensioner Kit for 2009-2010 Dodge Ram 1500 (DS)

What it Does: The Performance Drive Belt Tensioner Kit restores precise accessory drive belt alignment and optimal tension on the 2009-2010 Dodge Ram 1500 to prevent belt slip, parasitic drag, and accessory component failure.

The Stock Dodge Ram 1500 Accessory Drive Weakness

Under repeated thermal cycling and prolonged towing loads, the factory accessory drive on the 5.7L HEMI Eagle engine experiences severe dampener fatigue. The factory mechanical spring inside the stock tensioner gradually loses torsional strength, inducing internal arm oscillation and harmonic instability. Concurrently, factory composite idler bearings suffer grease dry-out and micro-pitting under engine bay heat soak, resulting in belt walk, edge shredding, alternator charging fluctuations, and prominent cold-start squeal.

The Engineering Solution

This comprehensive refresh kit replaces fatigue-prone drive components with precision-engineered replacements designed to withstand severe duty cycles. Featuring a reinforced internal torsional spring, the upgraded tensioner assembly stabilizes dynamic dampening across the entire RPM band. The assembly integrates a high-grade 6PK2020 EPDM serpentine belt resistant to thermal cracking, rib separation, and elongation. Paired with heavy-duty steel-cased bearings in the replacement idler pulley, the system guarantees proper tracking, reduced friction, and quiet power delivery under high accessory loads.

What's Included

• 1 Serpentine Belt (Part # 6PK2020)
• 1 Idler Pulley (Part # 38018)
• 1 Tensioner Assembly (Part # 38323)

Technical Specifications

Compatibility

• 2009 Dodge Ram 1500 5.7L V8
• 2010 Dodge Ram 1500 5.7L V8

Frequently Asked Questions & Fitment Warnings

Does this fit the DS Ram 1500?

Yes, this is a direct fit for the 2009-2010 Dodge Ram 1500 equipped with the 5.7L HEMI V8 engine. This kit does not fit 3.7L V6 or 4.7L V8 engine configurations.

Should the idler pulley and tensioner always be replaced alongside the serpentine belt?

Yes; replacing all three components simultaneously prevents premature failure, as worn bearings and weak tensioners rapidly destroy newly installed drive belts.

The Dodge Truck Standard

Engineered to handle severe duty cycles, heavy payload hauling, and high-temp towing, this drive system refresh ensures dependable auxiliary charging and cooling performance under demanding real-world truck usage.