Cummins Valves & Plungers — part numbers

205 numbers covering intake and exhaust valves, valve guides, seats, springs, collets, and the plunger and barrel assemblies used in the mechanical fuel systems on the older Cummins families.

The category groups two quite different kinds of part. Valve train components are overhaul parts, ordered as part of a head rebuild, and the ordering variables are the same as elsewhere in an overhaul — size, whether the head has been machined before, and what was fitted last time. Plunger and barrel assemblies are fuel system parts, matched sets, and calibration-dependent in the same way injectors are.

On the valve train side, the practical advice is to order guides and seals with valves as a matter of course. A new valve running in a worn guide wears rapidly and unevenly, and the guides are inexpensive relative to opening the head a second time. If you are quoting a head rebuild, quote the complete set.

On plungers and barrels, these are lapped matched pairs and must not be mixed between assemblies. If you are ordering replacements for a multi-cylinder engine, order the full set rather than individual elements unless you are certain of the condition of the rest.

Tier availability differs between the two halves. Valve train components have good branded aftermarket options which we quote openly. Plunger and barrel assemblies we supply genuine or from a named fuel system specialist with test documentation, because the lapping tolerances are the whole product.

For a quotation, send the engine serial, the CPL, and for fuel system parts the pump code stamped on the body.