The 3142A051 Exhaust Valve is precision-engineered for 4.4-liter, 6.0-liter, and 6.6-liter inline diesel engine platforms, specifically compatible with 1004, 1006, 6.354, and A6.354 series power units. This valve is extensively utilized across heavy-duty agricultural machinery, construction equipment, material handling systems, and power generation units.
The valve efficiently expels combustion gases from the combustion chamber, ensuring optimal engine breathing and preventing exhaust gas recirculation that could reduce power output. It is compatible with naturally aspirated and turbocharged diesel engines, supporting reliable operation in high-demand farming, earthmoving, and stationary power applications. The valve maintains critical sealing integrity during high-temperature exhaust cycles, contributing to improved engine efficiency and reduced emissions.
Head Hardness: Optimized for high-temperature creep resistance
Quantity per Engine: 4 units (4-cylinder engines) or 6 units (6-cylinder engines)
Valve Guide Compatibility: Precision-matched to 3343J021 exhaust valve guides
Material & Performance Features
The exhaust valve is manufactured from high-grade 21-4N austenitic heat-resistant stainless steel (containing 21% chromium, 4% nickel, and nitrogen additions) or bi-metal construction featuring chrome-manganese-nickel steel, providing exceptional creep resistance, thermal fatigue strength, and high-temperature oxidation resistance. The material composition ensures superior hot hardness and corrosion resistance against lead oxide and sulfur compounds present in exhaust gases.
The valve features a chrome-plated valve stem with hardened valve stem tip, significantly improving wear resistance, scuffing resistance, and fatigue life under cyclic high-temperature operating conditions. This surface treatment ensures minimal stem-to-guide wear and maintains precise valve seating geometry over extended service intervals, even when exposed to exhaust gas temperatures exceeding 700°C.