WESPC Exhaust Valve Stem Seal 120406050 For Perkins 403D-11 403D-15 403D-17 404D-15

WESPC Exhaust Valve Stem Seal 120406050 For Perkins 403D-11 403D-15 403D-17 404D-15

Application:

120406050 is the exhaust-valve stem seal for Perkins 403D-11, 403D-15, 403D-17, 404D-15, 404D-22 and 404D-22T three- and four-cylinder diesels. It is therefore fitted to JCB 802-803, Cat C1.1-C1.5, Linde forklifts, FG Wilson P13-5 to P22-5 generator sets, Massey-Ferguson 1700E tractors and LiuGong 906/908 mini-excavators that share the same cylinder-head machining.

Technical specifications:

Nitrile-rubber lip seal with spring-loaded 8 mm ID, 14 mm OD, 7 mm height; operating −30 °C to 120 °C in 15W-40 oil mist, withstands 0.5 bar crank-case pulse and 24 h salt-spray without loss of elasticity. The lip is moulded to Ra 0.4 µm to micro-seal the 8 mm exhaust-valve stem and prevent oil carry-over into the exhaust port.

Material & performance features:

FKM/nitrile blend is asbestos-free and bonded to a steel carrier for 25 % tear strength vs. cork substitutes; compression set <15 % after 70 h at 120 °C, providing >8 000 h leak-free life in 24/7 generator duty before replacement is required.

Interchange part numbers:

120406050 crosses directly with U20406140, 120406070, 10000-65742, 915-562, 915-563, 440-5104 and SBA120406050.

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.