Brand: PowerTraxLOCK-RIGHT FORD 7.5" 28 SPLINEApp/Model: Ford 7.5Axle Shaft Diameter: 1.2 InchCalifornia Proposition 65: Cancer and Reproductive Harm - www.P65Warnings.ca.govDifferential Model: Ford 7.5Ring Gear Bolt Quantity: 10Spline Quantity: 28Taxonomy A: LD DifferentialTaxonomy B: Differential Lockers & SpoolsTaxonomy C: Drop-in LockersTaxonomy D: RearType: OpenFor Ford 7.5" (10 Bolt); 28 Spline; For Open Differential; Only Recommended Up to 4.10 Ratio - Will Have To Clearance Teeth On Ring Gear; 4.56 and Numerically Higher Is Not Recommended As Too Much Material Might Have To Be RemovedInstallation InstructionsTechnical BulletinWarranty Period: 2 Years or 100,000 MilesReplaces: Transtar Industries: 761A715 Eaton: 912A316 PowerTrax: 9206752805 Ford: M4204C75 Applications: 1986-1997 Ford Aerostar 1984-1990 Ford Bronco II 1978-1983 Ford Fairmont 1981-1982 Ford Granada 1979-1986 Ford LTD 1979-2014 Ford Mustang 1983-2013 Ford Ranger 1980-1997 Ford Thunderbird 1982-1987 Lincoln Continental 1984-1987 Lincoln Mark VII 1994-1997 Mazda B2300 1998-2001 Mazda B2500 1994-1997 Mazda B3000 1994-1997 Mazda B4000 1979-1986 Mercury Capri 1980-1997 Mercury Cougar 1979-2011 Mercury Grand Marquis 1979-1986 Mercury Marquis 1979-1980 Mercury Monarch 1978-1983 Mercury Zephyr