Ford 8.8in. 28 Spline Ected Max Selectable Locker For Use With 28 Spline Axles;For Use With All Ratios; Able To Shift From Limited Slip To Spool On The Fly; No Additional Parts Needed;Smooth Street Operation;4 Year Replacement Warranty FORD LINCOLN MERCURY AVIATOR BRONCO BRONCO II EXPEDITION EXPLORER EXPLORER SPORT TRAC F-150 F-150 HERITAGE MOUNTAINEER NAVIGATOR RANGER ADRENALIN BASE CONVENIENCE CUSTOM EDDI BAUER EDDIE BAUER EDGE EL EDDIE BAUER EL KING RANCH EL LIMITED EL XL EL XLT EV FUNKMASTER FLEX EDITION FX2 FX4 KING RANCH L L LUXURY L ULTIMATE LIMITED LUXURY PREMIER S S PLUS SPORT STX SUPER SUPER CAB SVT LIGHTNING TREMOR ULTIMATE XL XLS XLT XLT LARIAT XLT SPORT 1978 1979 1980 1981 1982 1983 1984 1985 1986 1987 1988 1989 1990 1991 1992 1993 1994 1995 1999 2000 2001 2002 2003 2004 2005 2006 2007 2008 2009 2010 2011 2012 2.2 Diesel (134) 2.3L (140) 2.3L Turbocharged Diesel (140) 2.5L (153) 2.8L 2.8L (2786cc) 2.9L (177) 2L (1989cc) 2L (1999cc) EcoBoost 3.5L (3496cc) (Duratec) 3L (2986cc) Vulcan 3V 5.4L Triton (330) 3V 5.4L Triton Flex (330) 4.6L (281) InTech 4.6L Triton (281) 4.9L (300) 4.9L LPG (300) 4L (245) 4L Flex (245) 5.4L Supercharge (330) 5.4L Triton (330) 5.4L Triton Flex (330) 5.8L (351) Windsor 5L (302) 6.6L (400) 6.9L Diesel (420) 7.5L (460) Electric DIESEL FLEX GAS LPG Auburn Gear Auburn Gear Ford 8.8in. 28 Spline Ected Max Selectable Locker - 545001 545001 Differentials