Product Descriptions Fitment: Fit for 1996-1999 GM Full Size 2WD / 4WD Trucks and Vans, for Suburbans with 6.5L Diesel Engine Features: 1) Use to loosen and tighten injection pump retaining bolts when pump timing adjustment/pump service is required. Similar to Kent-Moore J-41711 and J-41089. 2) Wrenches are 15 mm, 12-point, double box-end type, two specially bent wrenches are needed due to the location of the throttle, cruise control, T.V. cable bracket, cooling system crossover pipe and bracket, and the thermostat housing on vans and pickups. .