WESPC Valve Spring T407116 For Perkins 1106D-70TA 1106D-E66TA Diesel Engine

Application:

T407116 is the outer (and often inner) valve spring fitted around both inlet and exhaust valves on 6-cylinder Perkins 1106D-70TA, 1106D-E66TA and Caterpillar C7.1 / 320D2 engines. It maintains correct valve motion up to 2 200 min⁻¹ in 70 kW – 130 kW applications such as CAT 320D2 excavators, JCB JS130 tracked carriers, 100 kVA “Vista A” generator sets and Claas Lexion combine harvesters while meeting EU Stage IIIA / EPA Tier 3 emission limits.

Technical specifications:

Free length 52 mm, outer diameter 32 mm, wire diameter 3.8 mm, 6.5 active coils, solid length 30 mm. Material is chrome-vanadium spring steel (50CrV4) oil-quenched and tempered to 47 HRC, then shot-peened to 0.30 mm A-intensity to raise fatigue life to 1 × 10⁷ cycles.

Material & performance features:

The 50CrV4 alloy (0.5 % C, 1 % Cr, 0.15 % V) offers 1 600 MPa tensile strength and 8 % elongation, resisting surge-set when exhaust temperature reaches 750 °C. Controlled shot-peening induces 450 MPa compressive stress on the outer surface, delaying fatigue crack initiation and extending service life to 12 000 h.

Interchange part numbers:

PERKINS T407116, 3174A015, 3174A014, AGCO 4227429M2, 4226319M2, KMP T407116, FPS VS-T407116, ITM VOET407116, FAI VS-T407116, AJUSA 810T407116, GLYCO VS-Per 1106, MAHLE VS-T407116, AE T407116, CLEVITE VS-T407116, TOPLINE T407116, VMC T407116, MARINE D’USTRIE T407116, KINGSLAND T407116, AIC T407116, WDPART T407116.

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.