WESPC Valve Seat 3314A101 For Perkins 1004-42 N4.421 1004.40 Four-Cylinder Diesel Engine

WESPC Valve Seat 3314A101 For Perkins 1004-42 N4.421 1004.40 Four-Cylinder Diesel Engine

Application:

Valve seat 3314A101 is the intake seat for the naturally-aspirated and turbocharged Perkins 1004-42, N4.421 and 1004.40 four-cylinder diesels (4.0 L) that power Massey Ferguson 362/365/375/383 agricultural tractors, the MF 30 and 31 combine harvesters, 40-65 kVA generator sets, JCB 530-70 Loadall tele-handlers, and a wide range of industrial sweepers, forklift trucks and irrigation pumps. The same seat is also used in the 1004.4T and AT4.40 turbo builds, making it a common service component across farms, rental fleets and construction yards worldwide.

Technical specifications:

The seat is a press-in ring 48.2 mm outside diameter, 41.3 mm inside diameter and 9.5 mm overall height, machined with a 30° conical face that mates with the intake valve head. The outside diameter is precision-ground to a 0.04 mm interference fit to guarantee positive retention in the cast-iron cylinder head, while the 2.4 mm wide seat contact band seals reliably at boost pressures up to 1.4 bar and inlet air temperatures of 200 °C.

Material & performance features:

The seat is manufactured from a low-carbon Cr-Mo-V sintered steel (Fe-2Cr-1.5Mo-0.8C) that is oil-quenched after sintering to reach a core hardness of 90 HRB, then double-tempered to relieve internal stress. The working face is high-frequency induction-hardened to 50 HRC to a depth of 1.1 mm, giving a wear index better than 900 hours in continuous 3000 rpm field tests. A manganese phosphate conversion coating (2–3 µm) is applied to the outer diameter to improve initial lubrication during press-fit and prevent micro-welding under severe thermal cycling.

Interchange part numbers:

PERKINS 3314A101, 3314A102, 3314A103, 3314A104; MASSEY FERGUSON 3638723M91, 3638723M92; LANDINI 747604M91, 747604M92; JCB 331/43029, 331/43030; LEYLAND 5L4342; KMP 3314A101-4; ITM 1158147.

WESPC(Dongguan)Tech Co., Ltd. is a wholly-owned subsidiary of WESPC Hong Kong.

The company has long been deeply engaged in the Perkins aftermarket spare parts sector, while also covering a wide range of multi-brand engines and related components. With years of professional expertise and a solid reputation, WESPC provides customers with diverse, one-stop solutions tailored to their needs.

Leveraging the global vision of its Hong Kong headquarters and the strategic location advantages of Dongguan, WESPC Dongguan is committed to building a highly efficient and reliable supply chain system, supported by professional technical expertise and comprehensive after-sales services, to continuously create greater value for its customers.

Looking ahead, the company will continue to expand its business landscape, keep pace with industry trends, and consistently enhance product and service quality—working hand in hand with global partners to achieve mutual growth and success.