Description

Cummins 6CTA Cylinder Head Replacement—Loaded Diesel Head (C3973493) When it comes to diesel engine reliability, the cylinder head is one of the most critical components. This Cummins 6CTA cylinder head replacement offers an OEM-quality solution for restoring your engine’s performance. Designed to meet or exceed Cummins factory standards, this head (part number C3973493) comes fully loaded and ready to install—saving you time, money, and hassle during engine rebuilds or replacements. This loaded Cummins 6CTA cylinder head includes pre-installed components such as valves, valve springs, valve guides, retainers, and seals. All components are professionally assembled and thoroughly tested to ensure durability, longevity, and excellent performance under high-load diesel conditions. The head is built from high-strength cast iron for maximum structural integrity and thermal resistance. All surfaces are CNC-machined to ensure a perfect fit, proper sealing, and optimal combustion chamber efficiency. With tighter tolerances and higher-quality assembly, this loaded cylinder head is a dependable choice for fleets, contractors, and heavy-duty equipment operators. Whether your 6CTA is in a bus, a construction machine, a truck, or a generator, this OEM Cummins 6CTA cylinder head replacement is designed to help your engine perform at its peak—mile after mile or hour after hour. This Cummins 6CTA cylinder head replacement (OEM part # C3973493) fits a wide variety of 8.3L Cummins 6CTA diesel engines used in: Freightliner, International, and other medium-duty trucks Construction equipment (loaders, graders, excavators) Transit buses and school buses Industrial generators and stationary engines Marine propulsion and auxiliary engines