WESPC Valve Spring 3174A031 for Perkins 1104D-44 1104C-44T Diesel Engine - 50mm Length 31mm Diameter

This 3174A031 outer valve spring is designed for 4-cylinder Perkins 1104D-44, 1104D-44TA, 1104C-44T and Caterpillar C4.4 industrial diesel engines (4.4 L). It is installed around both inlet and exhaust valves in engines that power JCB 3CX/4CX back-hoe loaders, Case Maxxum MX tractors, 45-70 kVA "Vista A" generator sets and MF 5400-series farm tractors. The spring maintains correct valve motion up to 3,000 min⁻¹ while meeting EU Stage IIIA / EPA Tier 4-final emission limits.

The 50CrV4 alloy (0.5% C, 1% Cr, 0.15% V) provides 1,600 MPa tensile strength and 8% elongation, resisting surge-set when exhaust temperature reaches 700°C. Controlled shot-peening induces 400 MPa compressive stress on the outer surface, delaying fatigue crack initiation and extending service life to 12,000 hours.

• PERKINS: 3174A031, T417479, T408677
• AGCO: 4224856M1, 4224856V1
• KMP: 3174A031
• FPS: VS3174A031
• ITM: VOE3174A031
• FAI: VS3174A031
• AJUSA: 8103174A031
• GLYCO: VS-Per 1104
• MAHLE: VS-3174A031
• AE: 3174A031
• CLEVITE: VS-3174A031
• TOPLINE: 3174A031
• VMC: 3174A031
• MARINE D'USTRIE: 3174A031
• KINGSLAND: 3174A031
• AIC: 3174A031
• WDPART: 3174A031