This Chevrolet Performance roller lifter follower rides the camshaft fuel pump lobe and drives the high-pressure fuel pump on Gen V LT direct-injection engines. It is a steel component supplied with its retainer and mounting hardware for a direct factory style replacement.
Specifications:
- Fuel pump roller lifter follower (valve lifter follower guide)
- Mechanical roller follower
- Steel, natural finish
- Retainer and hardware included
- Fits GM Gen V LT-Series direct-injection engines
- Sold individually (each)
- Part number: 12642273
Applications:
- GM Gen V LT-Series direct-injection engines (LT1, LT4, L83, L86)
FAQ
What does follower 12642273 do?
It rides the camshaft fuel pump lobe and drives the engine high-pressure fuel pump on Gen V LT direct-injection engines.
Is any hardware included?
Yes. The follower is supplied with its retainer and mounting hardware.
What is it made of?
It is a steel mechanical roller follower with a natural finish.
Which engines does it fit?
It fits GM Gen V LT-Series direct-injection engines such as the LT1, LT4, L83, and L86.

