468-8824

The Caterpillar 468-8824 Engine Head Inlet Valve is a high-temperature, fluid-dynamic combustion control hardware component. It is engineered to manage precision air intake, maintain tight positive sealing under extreme compression pressures, and regulate emission control standards across high-displacement internal combustion engines subject to relentless mechanical pounding and high-thermal loading.

Core Dimensions & Fastener Specs
Valve Head Outside Diameter (OD): 56.00 mm (2.20 in)
Stem Design: Hard chromium plated stem for high-frequency low-friction reciprocating movement
Component Type: Engine Head Inlet / Intake Valve
Application Target: Cylinder head intake valvetrain assembly
Material & Manufacturing Specs
Material Grade: Premium heat-resistant alloy steel and chromium base construction.
Coating & Finish: Hard chromium plating on the structural stem to eliminate micro-galling, localized frictional heat spikes, and premature guide wear.
Manufacturing Standards: Fully engineered to meet strict Caterpillar emissions control tolerances and structural hardness thresholds under ISO 9001 certified protocols.
Equipment & System Compatibility
This high-durability cylinder head intake valve is standard heavy-duty hardware deployed across a vast selection of large-scale Caterpillar heavy machinery, earthmovers, marine crafts, and industrial gas power generation platforms:
Engine Platforms: Deployed heavily inside the cylinder head assemblies of Caterpillar 3500-series and G3500-series large-bore diesel and natural gas configurations, explicitly supporting 3508, 3508B, 3508C, 3512, 3512B, 3512C, 3516, 3516B, 3516C, G3508, G3508B, G3512, G3516, G3516B, and G3520B engine builds.
Heavy Earthmovers & Track Dozers: Widely used within the main power units of ultra-class crawler fleets and heavy infrastructure machines, including the Caterpillar D11N and D11R track-type tractor divisions.
Ultra-Class Mining Trucks & Loaders: Deployed across high-horsepower mining equipment groups, including primary propulsion networks for CAT 777, 785, 789, 793, 797 mechanical-drive haul trucks, and 992G, 994, 994D, 994F, 994H wheel loader fleets.
Part Cross-References
Alternative Part Names: Engine Head Inlet Valve, Intake Valve, Valve-Inlet.
Alternative Part Numbers: 4688824, 468-8824.