Diesel Injection Pump Distributor Head Sub-Assembly

This precision fuel system component sits at the heart of the diesel injection pump. It directs high‑pressure diesel to each cylinder at the exact moment, ensuring easy starts, smooth idle, strong torque, clean emissions, and good economy. Choosing a quality unit restores factory fuel delivery and protects your engine and injectors.

Why you need it ⚙️

Without an accurate distributor head, injection timing and quantity drift. That means hard starting, loss of power on climbs, poor throttle response, and extra smoke. Replacing a worn head is a cost‑effective way to recover performance and reliability.

How it works ⛽

Driven by the pump cam, the rotor compresses fuel and the internal ports sequence the flow to each outlet. A tight clearance body, check valves, and timing passages keep pressure stable. The result: consistent atomization at every injector, every cycle.

Failure symptoms and risks ❗

Long cranking, stalling when hot, rough idle, misfire on one or more cylinders, diesel knock, gray/black smoke, metal shimmer in fuel, and leaks around the pump. Continued use can scar the pump, overheat injectors, and lead to no‑start.

Compatibility

• Coaster
• Land Cruiser
• Land Cruiser 100
• Land Cruiser S/T,H/T
• Land Cruiser Van