Valve Lifter for Cummins ISB / QSB Series

Technical Overview
The valve lifter for Cummins ISB and QSB Series engines transfers camshaft motion to the valve system, maintaining timing accuracy and consistent performance. Specifically designed for engines built before 2003, this lifter provides long-term reliability under OEM-equivalent standards.

Detailed Features
• Base diameter 1.15”, neck length 2.15”.
• For Cummins ISB4.5, ISB6.7, QSB4.5, QSB6.7 engines built before 2003.
• Hardened-steel construction ensures durability and precision valve operation.

FAQ

1. What is the function of this part?
A valve lifter (tappet) for Cummins ISB/QSB engines transfers camshaft motion to the valves, ensuring precise timing and optimal performance.

2. Which engines does it fit?
This valve lifter fits Cummins ISB4.5, ISB6.7, QSB4.5, and QSB6.7 engines manufactured before 2003.

3. What material is used?
Built from hardened steel, providing superior wear and heat resistance for extended service life.

4. Is installation complex?
Installation is straightforward when following Cummins ISB/QSB service procedures. A qualified technician is recommended.

5. Is it OEM or aftermarket?
This is an OEM-quality replacement valve lifter engineered to match original Cummins ISB/QSB specifications.

Diesel Pro ensures this component meets OEM standards, with fast international shipping and up to 12 months of warranty.