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Belt Tensioner Cummins 3400885 | 38521, 89418, 49527, 3570333
Keep your heavy-duty engine running smoothly with this premium belt tensioner for Cummins L10, M11, ISM, and QSM engines. Engineered to maintain optimal serpentine belt tension, it prevents slippage and extends accessory drive life.
Description
Keep Your Engine Accessories Running Smoothly with the Cummins 3400885 Belt Tensioner
The Cummins 3400885 Belt Tensioner is a heavy-duty automatic tensioner engineered to maintain precise tension on your engine’s serpentine belt. By providing consistent, reliable tension, this assembly prevents belt slippage, reduces vibration, and protects critical accessory drive componentsāsuch as the alternator, water pump, and fan driveāfrom premature wear and failure.
Key Features & Benefits
- Optimal Tension Control: Automatically adjusts to maintain the correct belt tension, minimizing wear and maximizing belt life.
- Heavy-Duty Construction: Built with a robust cast housing and high-strength internal spring to resist cracking, fatigue, and harsh under-hood temperatures.
- Premium Bearings: Features high-quality, lubricated bearings with dust shields to prevent contamination and ensure smooth, quiet operation.
- Direct Replacement: Manufactured to match precise factory dimensions for a hassle-free installation and perfect fitment.
Engine Compatibility & Applications
This belt tensioner is designed for heavy-duty Cummins diesel engines, including:
- Cummins L10 Series
- Cummins M11 Series
- Cummins ISM / ISM11 Series
- Cummins QSM / QSM11 Series
- Select Cummins ISX15 applications
Product Specifications
- Part Number: 3400885
- Pulley Outside Diameter: 2.95 in (75 mm)
- Pulley Width: 1.69 in (43 mm)
- Contact Surface: Smooth
- Pulley Material: Steel
