WESPC Exhaust Valve T403169 for Perkins 1004-4 1006-6 1104C-44 Diesel Engines - 150mm Length, 38mm Head Diameter

This exhaust valve is engineered for Perkins 1004-4, 1004-4T, 1006-6, 1006-6T, 1104C-44, and 1104C-44T diesel engines (4.0-6.0 L capacity) powering 55-70 kW generator sets, Massey Ferguson 3000/6400 tractors, JCB 3CX back-hoe loaders, and combine harvesters. Installed in cylinder-head exhaust ports, it withstands 850°C combustion temperatures while maintaining seat concentricity within 0.02 mm TIR, ensuring blow-by remains below 1% after 12,000 hours of cyclic operation.

• Overall Length: 150 mm
• Head Diameter: 38 mm
• Stem Diameter: 9 mm
• Seat Face Angle: 45°
• Margin Thickness: 2.5 mm
• Stem Tip Hardness: 55 HRC (induction-hardened)
• Material: 21-4N (UNS S63015) austenitic stainless steel
• Heat Treatment: Solution-treated at 1050°C and age-hardened to 30 HRC

The 21-4N alloy composition includes 9% Mn, 4% Cr, 3% Ni, and 0.45% C, delivering continuous hot strength up to 850°C and resistance to lead/sulphur corrosion when using low-grade fuels. Chrome plating reduces stem wear groove depth to less than 0.02 mm after 6,000 hours, while the roll-burnished fillet extends thermal-fatigue cracking resistance by 30%.

PERKINS T403169, T400745, T403170, T400744, U20176391, 3142A101, 301-03673, KMP T403169, FPS VT403169, EMMARK EM5788, SPARETO T403169, AGRI DOCTOR AD-T403169, WDPART T403169