PPE Idler Pulley 3.0" OD OEM Size 01-10 GM 6.6L Duramax LB7/LLY/LBZ/LMM XDP-XD474 When that's the case

When that's the case

The economy or added horsepower options are tuned by PHP and will offer the same reliability as a stock tuned FICM

once torqued to spec

The rail is constructed of 6063 Marine grade aluminum with an integrated bracket system with precision stainless steel pivot pins for rock-solid stability to support up to 600 pounds

PPE Idler Pulley 3.0" OD OEM Size 01-10 GM 6.6L Duramax LB7/LLY/LBZ/LMM XDP-XD474 When that's the caseNeed to replace a worn or noisy idler pulley on your Duramax? The PPE 3 Inch Idler Pulley is designed as a direct fit replacement for 01 10 GM 6. 6L Duramax applications, helping restore proper belt alignment, tension, and smooth accessory drive operation. A failing idler pulley can lead to belt squeal, premature belt wear, inconsistent tension, and even complete belt failure if left unchecked. By matching the factory 3. 0 inch outer diameter