WESPC Valve Seat Insert 3314A251 For Perkins 1104A-44 1104C-44 1104D-44 1106C-70 Diesels Engine

WESPC Valve Seat Insert 3314A251 For Perkins 1104A-44 1104C-44 1104D-44 1106C-70 Diesels Engine

Application:

3314A251 is the inlet-valve seat for Perkins 1104A-44, 1104C-44, 1104D-44, 1106C-70 and 1106D-70 engines as well as Caterpillar C7.1, C6.6 and 320D2 industrial packs. It is therefore used in 80-250 kVA generator sets (FG Wilson P88-5, P110-3, Atlas-Copco QAS 200), mid-range wheel loaders, excavators, combine harvesters and material-handling forklifts that share the same cylinder-head machining.

Technical specifications:

OD 44.45 mm (1.750 in), depth 8.0 mm, 30° seat angle, 2.0 mm seating width; interference fit 0.05-0.07 mm for cast-iron heads. The insert is finish-turned to 41.3 mm throat diameter and the 0.3 mm corner radius eliminates galling during press-fit while the 0.02 mm concentricity tolerance prevents valve run-out under 220 bar peak pressure.

Material & performance features:

Vacuum-sintered Co-Cr-Mo tool steel (≥48 HRC) containing 30 % Cr, 1.2 % Mo, 0.8 % V, tempered at 580 °C to retain 38 HRC at 700 °C. A controlled 0.05 % P addition promotes secondary graphite for self-lubrication, while the lapped 30° face (Ra 0.6 µm) beds in within 15 min and resists low-sulphur diesel, biodiesel and 20 % HVO, giving >12 000 h service before re-cut.

Interchange part numbers:

Perkins 3314A251, 3683627M2, 3854872M91, Landini 1922341M1, Fiat 3856213, Weichai WG3314A251 and KMP 3314A251.

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.