120166380 Inlet valve for FG Wilson 6.8KVA-13.5KVA for Perkins 403 engine

120166380 Inlet valve for FG Wilson 6.8KVA-13.5KVA for Perkins 403 engine

Application: The 120166380 intake valve is engineered for Perkins T4.236 and AT4.236 turbocharged diesel engines (4.0 L), widely used across agricultural tractors, combine harvesters, generator sets, and industrial machinery. This valve regulates the precise flow of fresh air into the combustion chamber, ensuring optimal volumetric efficiency, clean combustion, and consistent power delivery under the high‐speed, high‐boost conditions characteristic of the Perkins 4.236 family.
Agricultural tractors: Massey Ferguson 265, 275, 290, 390T, 398; Landini 10000 Series; Fiat 640—tractors that depend on the T4.236’s robust mid‐range torque and fuel efficiency for deep tillage, planting, and heavy transport, requiring a high‐flow intake valve to maintain engine responsiveness across varying engine speeds.
Combine harvesters: Massey Ferguson 750, 760, 850; White 8600 Series—harvesters operating in long, continuous cycles where stable air induction and minimal backflow are critical to keeping cylinder temperatures in check and reducing smoke during high‐load harvesting.
Generator sets: Perkins T4.236 gen‐sets by FG Wilson, KOHLER, and Fairbanks Morse, typically rated between 60 kVA and 100 kVA. In these applications, the 120166380 intake valve helps maintain steady air‐fuel ratios and smooth engine idle stability, supporting reliable electrical output in standby and prime power service.
Industrial machinery: Stationary pumps, compressors, and hydraulic power units powered by Perkins T4.236 engines in irrigation,manufacturing, and remote power installations. The intake valve’s tight sealing and precision guide clearance minimize oil carryover and ensure efficient breathing under continuous or cyclical heavy‐duty loads.
Technical specifications: Valve head diameter: 29.50 mm; valve stem diameter: 7.94 mm; overall length: 110.00 mm; seat angle: 45°;stem tip hardness: ≥ 50 HRC.
Material & performance features: Forged from premium heat‐resistant alloy steel and precision-machined for concentricity, the valve undergoes induction hardening and a stellite coating on the head face to resist pitting and thermal fatigue. The upper stem is gas-nitrided for superior wear resistance, while the lower stem is chrome-plated to reduce friction in the valve guide. Final stages include mirror polishing of the sealing face and stem to guarantee smooth valve movement, reduced guide wear, and long service intervals even under high exhaust gas recirculation rates.
Interchange part number: PERKINS 120166380; MASSEY FERGUSON 3665421M92; LANDINI 3152321M91; FIAT 84387910; WG 1106560.