Overview — 6C Cylinder Head Assembly 4938632RX-A
4938632RX-A is the complete cylinder head assembly for CUMMINS 6C-series engines, supplied as a ready-to-fit unit for overhaul and rebuild work. We can supply this assembly as well as related CUMMINS 6C engine components, in stock or available on order — welcome to enquire by part number.
Parts Characteristics
The assembly comprises the cylinder head casting fitted with the valve train and combustion components required for installation, matched to the original CUMMINS 6C specification. Valve seats, guides, injector bores and cooling passages are machined to factory tolerances, and the assembled components are checked so the head can be fitted directly after the specified gasket and fastener set is supplied. The deck face is prepared to the original flatness limit for a reliable head gasket joint, and the assembly carries the oil and coolant galleries in the original positions. As a complete assembly, it removes the risk of assembling individual head components incorrectly during a rebuild.
Applicable Models & Applications
This cylinder head assembly is used on CUMMINS 6C-series engines fitted in construction, industrial, generator and marine applications. The 6C family operates across a range of ratings, and the assembly suits the builds that share the same combustion, valve and injector configuration. Typical applications include full overhauls, head replacement after cracking or warping, and exchange programs where a complete, tested head shortens the time the engine is out of service. Confirm the engine serial range and the exact component specification of your engine before ordering.
Maintenance & Replacement
Fit the replacement head as part of a complete overhaul: check the block deck for flatness, fit new head bolts or studs as specified, and tighten in the sequence and torque steps given in the service manual. Verify the valve clearances and injector settings after installation, and pressure-test the cooling system before the engine is loaded. Because a head assembly is only as good as the surrounding rebuild, use new gaskets, filters and lubricants at the same time, and follow the running-in procedure specified for the engine. Correct installation restores compression, cooling and oil control for a full service interval.
Price Reference (USD)
The reference price for this 6C Cylinder Head Assembly (4938632RX-A) is approximately USD 600 – 1500 per unit depending on condition grade, quantity and shipping destination. This is a planning estimate only — confirm current pricing and availability with our sales team before ordering.
Value & Service
A complete head assembly saves hours of rebuild time and removes the risk of assembling individual components incorrectly, which is why we verify 4938632RX-A against the original CUMMINS 6C specification and check the assembly before dispatch. We support the supply with clear quality checks and responsive after-sales help, and our team can confirm the matching gasket and fastener sets for your 6C engine serial range. Worldwide shipping with tracking is available, and quantity pricing is offered to rebuild shops and fleet operators.
Racer Machinery is a dedicated construction-machinery parts supplier — send us your part number and engine model, and we will confirm fitment, price and lead time for this cylinder head assembly and related CUMMINS 6C overhaul components.






