Description
Product Overview
Part Name: Timing Belt Pulley Tensioner
Part Numbers: 38667 / A4722000170 / A4722000270 / EA4722000470
Vehicle Compatibility: Suitable for Freightliner Cascadia, Coronado, and Columbia trucks equipped with Detroit Diesel DD13, DD15 and DD16 engines, manufactured between 2008–2024. Designed to maintain precise belt tension for stable engine timing and reliable operation of front-end accessory systems.
Configuration: High-strength pulley tensioner featuring a sealed heavy-duty bearing, reinforced steel bracket, vibration-resistant tension spring, and precision-machined pulley surface for stable belt tracking and long service life under heavy-duty load conditions.
Function: Maintains correct belt tension, stabilizes belt alignment, prevents slippage, reduces vibration and ensures consistent timing performance of camshaft, crankshaft and accessory drives in DD-series engines.
Technical Specifications
Type: Engine belt tensioner pulley
Material: Hardened steel pulley with high-performance sealed bearing
Application: Fits Freightliner trucks using Detroit Diesel DD13/DD15/DD16 engines with part numbers 38667, A4722000170, A4722000270 and EA4722000470
Cross-Reference: Matches equivalent pulleys sharing identical diameter, bearing type, belt-groove profile and mounting configuration in DD-series engines
Installation: Recommended during belt replacement or when experiencing belt noise, misalignment, bearing wear, vibration or inconsistent belt tension
Service Interval: Replace with every major belt service interval or when bearing noise or tension issues occur
Delivery & Availability
Stock Options: Tensioner pulleys available in ready stock
Delivery Time: 3–7 days internationally
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