WESPC Valve Spring T417885 For Perkins 1004-4 1006-6 135TI 1106 Family Diesel Engines Brand Name WESPC Place of Origin China Part Number T417885 After-sales Service Provided Video Technical Support, Online Support Marketing Type Ordinary Product Certificate ISO9001 Warranty 1 Year Stock Yes 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