CM660BK-CLH0A

CM660BK-CLH0A is catalogued as CUMMINS ISLE CYLINDER HEAD ASSY. In service this component carries load in the rotating or reciprocating assembly. Parts in this group are dimensional: they are matched to a size, and the size fitted at the last overhaul governs what fits now. This number is not mapped to a single engine family in our catalogue, which usually means it spans several builds — send the engine serial and we will confirm fitment against your unit specifically.

We hold no alternate or superseded numbers against this part. That usually means it is current, but it is not proof: if the number stamped on the part you are removing differs from this one, send a photograph of the markings before ordering rather than assuming the two are equivalent.

Buyers usually reach this number for one of a small set of reasons: low or falling oil pressure, particularly at idle when hot; a deep knock that follows load rather than speed; metal in the oil filter or on the sump magnet; oil consumption and blow-by rising together; coolant loss with no external leak, on liner seal failure.

Bearings have a strong branded aftermarket, and several manufacturers who supply original equipment sell the same component under their own name. Where that is the case we will say so and quote it. For liners we lean toward genuine, because block fit and seal groove tolerances are exactly where aftermarket variation shows up in service.

This is a heavy or bulky line. Sea freight LCL through Dubai to Berbera is the economic route and the one we quote by default; air cargo is available where a set is down and the cost is justified. We will normally give you both prices and both dates and let you decide, and where an order mixes urgent and non-urgent lines we will split the shipment rather than hold everything for the slowest item.

To quote this line accurately we need the engine serial, the CPL, whether the block has been bored, and what sizes were fitted at the last overhaul. Photographs of the old shells with the markings visible are often faster than paperwork. Orders are confirmed with a 50% deposit, balance on shipment.