The Detroit Truetrac was the first helical gear differential ever introduced into the automotive aftermarket as an Eaton brand. It remains the leading helical gear-type limited slip differential in the industry. Detroit Truetrac's proven helical gear design eliminates the need for wearable parts, resulting in maintenance free traction recognized not only for its toughness, but its smooth and quiet operation as well.Proven design, low cost and effective performance all make the Detroit Truetrac limited slip differential the ideal choice for a wide variety of vehicle applications. No maintenance - Just Traction.

Vehicle Fitment

Years	Make	Model	Trim
1985–1991	Chevrolet	Astro	Base
1985–1991	Chevrolet	Astro	CL
1985–1991	Chevrolet	Astro	CS
1987–1991	Chevrolet	Astro	LT
1983	Chevrolet	G10	Base
1975–1991	Chevrolet	G10	Beauville
1981–1984, 1986–1987	Chevrolet	G10	Bonaventure
1975–1991	Chevrolet	G10	Chevy VAN
1975–1991	Chevrolet	G10	Sportvan
1975–1991	Chevrolet	G20	Beauville
1983–1984	Chevrolet	G20	Bonaventure
1975–1991	Chevrolet	G20	Chevy VAN
1978–1981	Chevrolet	G20	Nomad
1975–1991	Chevrolet	G20	Sportvan
1975–1991	Chevrolet	G30	Beauville
1983–1984	Chevrolet	G30	Bonaventure
1975–1991	Chevrolet	G30	Chevy VAN
1975–1991	Chevrolet	G30	HI-Cube
1975–1991	Chevrolet	G30	Sportvan
1990–1991	Chevrolet	Lumina APV	Base
1990–1991	Chevrolet	Lumina APV	CL
1966–1971	Chrysler	300	Base
1966–1967	Chrysler	Imperial	Base
1966–1970	Chrysler	Imperial	Crown
1966–1972	Chrysler	Imperial	Lebaron
1966–1972	Chrysler	NEW Yorker	Base
1972	Chrysler	NEW Yorker	Brougham
1966–1971	Chrysler	Newport	Base
1967–1972	Chrysler	Newport	Custom
1971–1972	Chrysler	Newport	Royal
1966–1972	Chrysler	Town & Country	Base
1970–1972	Dodge	Challenger	Base
1970–1971	Dodge	Challenger	R/T
1972	Dodge	Challenger	Rallye
1970	Dodge	Challenger	T/A
1969–1971	Dodge	Charger	500
1966–1972	Dodge	Charger	Base
1969	Dodge	Charger	Daytona
1967–1971	Dodge	Charger	R/T
1969	Dodge	Charger	SE
1971–1972	Dodge	Charger	Special Edition
1971	Dodge	Charger	Super BEE
1971–1972	Dodge	Colt	Base
1966–1970	Dodge	Coronet	440
1966–1970	Dodge	Coronet	500
1966–1967, 1970–1972	Dodge	Coronet	Base
1971	Dodge	Coronet	Brougham
1971–1972	Dodge	Coronet	Crestwood
1971–1972	Dodge	Coronet	Custom
1966, 1968–1970	Dodge	Coronet	Deluxe
1967–1970	Dodge	Coronet	R/T
1968–1970	Dodge	Coronet	Super BEE
1966–1968	Dodge	Dart	270
1966–1972	Dodge	Dart	Base
1969–1972	Dodge	Dart	Custom
1971–1972	Dodge	Dart	Demon
1971–1972	Dodge	Dart	Demon 340
1966–1969	Dodge	Dart	GT
1968–1969	Dodge	Dart	GTS
1971–1972	Dodge	Dart	Special
1969–1972	Dodge	Dart	Swinger
1967–1968	Dodge	Monaco	500
1966–1972	Dodge	Monaco	Base
1968–1969	Dodge	Polara	500
1966–1972	Dodge	Polara	Base
1971	Dodge	Polara	Brougham
1970–1972	Dodge	Polara	Custom
1970	Dodge	Polara	Special
1975–1978	GMC	G15	Rally
1975–1978	GMC	G15	Rally STX
1975–1978	GMC	G15	Vandura
1979–1991	GMC	G1500	Rally
1983–1984	GMC	G1500	Rally Custom
1979–1991	GMC	G1500	Rally STX
1979–1991	GMC	G1500	Vandura
1975–1978	GMC	G25	Rally
1975–1978	GMC	G25	Rally STX
1975–1978	GMC	G25	Vandura
1979–1991	GMC	G2500	Rally
1983–1984	GMC	G2500	Rally Custom
1979–1991	GMC	G2500	Rally STX
1979–1991	GMC	G2500	Vandura
1975–1978	GMC	G35	Magnavan
1975–1978	GMC	G35	Rally
1975–1978	GMC	G35	Rally Camper Special
1975–1978	GMC	G35	Rally STX
1975–1978	GMC	G35	Vandura
1975–1978	GMC	G35	Vandura Special
1979–1991	GMC	G3500	Magnavan
1979–1991	GMC	G3500	Rally
1979–1991	GMC	G3500	Rally Camper Special
1981–1988	GMC	G3500	Rally Custom
1979–1991	GMC	G3500	Rally STX
1979–1991	GMC	G3500	Vandura
1979–1991	GMC	G3500	Vandura Special
1985–1991	GMC	Safari	Base
1985–1987	GMC	Safari	SL
1985–1991	GMC	Safari	SLE
1987–1991	GMC	Safari	SLT
1985–1990	GMC	Safari	SLX
1966–1972	Plymouth	Barracuda	Base
1970–1971	Plymouth	Barracuda	Gran Coupe
1966–1971	Plymouth	Belvedere	Base
1968–1971	Plymouth	Belvedere	Satellite
1966–1967	Plymouth	Belvedere II	Base
1971–1972	Plymouth	Cricket	Base
1970–1972	Plymouth	Cuda	Base
1970–1972	Plymouth	Duster	340
1970–1972	Plymouth	Duster	Base
1966–1967	Plymouth	Fury	Base
1971	Plymouth	Fury	Custom
1968, 1970–1972	Plymouth	Fury	Custom Suburban
1970, 1972	Plymouth	Fury	Gran Coupe
1972	Plymouth	Fury	Gran Sedan
1970	Plymouth	Fury	GT
1970	Plymouth	Fury	S-23
1966–1971	Plymouth	Fury	Sport
1970–1971	Plymouth	Fury	Sport GT
1968, 1970–1972	Plymouth	Fury	Sport Suburban
1968, 1970–1972	Plymouth	Fury	Suburban
1966, 1968–1969	Plymouth	Fury	VIP
1968–1972	Plymouth	Fury I	Base
1968–1972	Plymouth	Fury I	Suburban
1966–1972	Plymouth	Fury II	Base
1968–1972	Plymouth	Fury II	Custom Suburban
1966–1972	Plymouth	Fury III	Base
1968–1972	Plymouth	Fury III	Sport Suburban
1972	Plymouth	Gran Fury	Base
1972	Plymouth	Gran Fury	Custom Suburban
1972	Plymouth	Gran Fury	Sport Suburban
1972	Plymouth	Gran Fury	Suburban
1967–1971	Plymouth	GTX	Base
1968–1972	Plymouth	Road Runner	Base
1966–1972	Plymouth	Satellite	Base
1971	Plymouth	Satellite	Brougham
1971–1972	Plymouth	Satellite	Custom
1971–1972	Plymouth	Satellite	Regent
1971–1972	Plymouth	Satellite	Sebring
1971–1972	Plymouth	Satellite	Sebring Plus
1968–1970	Plymouth	Satellite	Sport
1971–1972	Plymouth	Scamp	Base
1970	Plymouth	Superbird	Base
1968–1969	Plymouth	Valiant	100
1966	Plymouth	Valiant	200
1966–1972	Plymouth	Valiant	Base
1966–1969	Plymouth	Valiant	Signet
1967	Plymouth	VIP	Base