WESPC Valve Spring T417885 For Perkins 1004-4 1006-6 135TI 1106 Family Diesel Engines

WESPC Valve Spring T417885 For Perkins 1004-4 1006-6 135TI 1106 Family Diesel Engines

Application:

T417885 is the inner valve spring used on the intake and exhaust valves of Perkins 1004-4, 1006-6, 135TI and 1106 family diesel engines. It is installed in the cylinder heads of JCB 3CX/4CX back-hoe loaders, Claas Lexion combines, Terex TA6 dumpers, Manitou MLT tele-handlers and FG Wilson P110-P165 generator sets where it works together with the outer spring T417880 to control valve motion under high boost and EGR conditions.

Technical specifications:

Free length 55 mm, installed length 37 mm, outer diameter 22 mm, wire diameter 3.2 mm. The spring delivers 95 N seat load at 37 mm and 220 N open load at 26 mm lift, giving a rate of 10 N/mm. Solid height is 24 mm with a safety margin of 0.4 mm to coil bind.

Material & performance features:

The wire is chrome-silicon alloy steel (SAE 9254) shot-peened to 0.18 mmA intensity and stress-relieved at 280 °C for 30 min to achieve 48–52 HRC surface hardness. A blue-oxide finish provides 96 h salt-spray protection per ASTM B117. The spring is preset to eliminate length relaxation during the first 50 h of operation, guaranteeing <1 % load loss over the 12 000 h engine overhaul interval.

Interchange part numbers:

Perkins T417885, 31744133, 740465M1, 02/101969; Vapormatic VPA2014; Landini 02/101969.

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.