3934864

3934864 is catalogued as CUMMINS ISC CONNECTING ROD NUT. 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. It is catalogued here against the Cummins ISM / ISX.

We hold no alternate or superseded numbers against this part.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.

On the ISM and ISX, fitment for fuel system and electronic parts follows the ECM calibration rather than the engine serial alone. Send the calibration where it can be read.

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.