Power Steering Gear Box1964-1976 Buick, Chevy, GMC, Oldsmobile, Pontiac, AMC, & Jeep4 Turns Lock to Lock13/16 in.-36 Spline Input Shaft with Flat & GrooveVariable Steering Ratio: 12.73:1-15.39:1Black Painted Finish JEGS 60743 pre-lubed Power Steering Box for select 1964-1976 AMC, GM, and Jeep models is a direct replacement upgrade that will require a (32-spline plus four master splines) pitman arm for your application. This variable ratio steering box assists in cornering and highway driving, allowing for a quicker steering ratio with more steering angle input and a slower steering ratio for straight-line driving; for a more gentle drive.JEGS 555-60743 Power Steering Gear Box Features: Cast iron construction (4) Mounting holes (Thread size: 3/8 in.-16) Pressure port thread size: 11/16 in.-18 inverted flare Return port thread size: 5/8 in.-18 inverted flare 1 1/4 in.-32 spline pitman shaft + 4 master splines Includes Pitman shaft nut and lock washerReplacement for Part Number(s): 19321358 358938 3996779 3996780 3996781 6258460 6260559 7826336 6260560 6272004 7809529 7813599 7818137 7818138 7818141 7818145 7818886 7819389 JEGS 555-60743 Power Steering Gear Box Vehicle Fitment: 1965-1974 AMC Ambassador 1964-1969 AMC American 1969-1970 AMC AMX 1970-1978 AMC Gremlin 1970-1977 AMC Hornet 1968-1974 AMC Javelin 1971-1976 AMC Matador 1966-1970 AMC Rebel 1975 Buick Apollo 1973-1976 Buick Century ...