WESPC Valve Seat T400757 For Perkins 1506A E88TAG 1104 1004 Series

WESPC Valve Seat T400757 For Perkins 1506A E88TAG 1104 1004 Series

Application:

T400757 is an exhaust-valve seat ring that is pressed into the cylinder heads of Perkins 1506A/E88TAG 6-cylinder diesels (8.8 L) as well as the 1004/1104 4-cylinder family (4.0–4.4 L) used in 150–250 kW generator sets, combine harvesters, MF 6400-series tractors and marine auxiliary engines. It provides the 45 ° sealing surface for 38 mm exhaust valves, maintaining blow-by below 1 % and keeping exhaust temperature within EU Stage IIIA limits after 12 000 h of full-load duty.

Technical specifications:

OD 46.0 mm, ID 38.5 mm, thickness 7.0 mm, seat angle 45 °, interference fit 0.06–0.10 mm in aluminium head, depth in pocket 7.5 mm. Material is low-carbon (0.15 %) steel billet that is copper-infiltrated and sintered to 7.2 g cm⁻³ density, giving 350 HB hardness and thermal conductivity 45 W m⁻¹ K⁻¹ for rapid heat rejection.

Material & performance features:

The copper-infiltrated matrix resists valve micro-welding and transfers heat away from the 21-4N stainless valve head, keeping seat temperature below 220 °C even when exhaust gas reaches 700 °C. Controlled 0.25 µm Ra surface finish beds in within 50 h, maintaining blow-by <1 % for the engine’s full life.

Interchange part numbers:

PERKINS T400757, 222230, 4484632/6, KMP T400757, CORTECO 82316912, FAI VT400757, AJUSA 810400757, GLYCO VS-Per 1506, MAHLE VS-T400757, AE T400757, CLEVITE VS-T400757, TOPLINE T400757, VMC T400757, MARINE D’USTRIE T400757, KINGSLAND T400757, AIC T400757, WDPART T400757.

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.