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Champion Positraction Differential Additive

Champion Positraction Differential Additive

Part #:
Replacement for OE #: 4285V
Availability: In Stock
Fitment: 1947 thru 1979
See applications below for exact details.
(No Discount / Limited Discount)
Champion Brands
Shipping Note: This item can not be shipped by air.

Limited Slip Rearend Additive
$11.99 ea.

  • Higher Performance Than OE Additive
  • Modifies Clutch  Pack Friction To Surpass Original GM Requirements 
  • Eliminate Noise, Vibration and Harshness Associated With Limited Slip Differentials
  • Works With All Standard Clutch Plate Materials
  • 4  oz. Bottle
  • Cannot Ship By Air
  • Posi rearends require an additive to be mixed with the gear lube. This is used to mediate friction in the clutch plates. If you've ever forgotten this little 4 ounce bottle when changing out your gear dope, then  you know how absolutely necessary this posi additive really is! Rear tires will chirp when going around corrners and strange clunks and noises will come out of the rear of the car. Champion has this limited slip additive that surpasses OE requirements to protect sensitive clutch packs, quiet down your posi unit and offer the best friction protection possible.


    Make / Model Series Body Notes Year
    CHEVROLET TRUCK 1947, 1948, 1949, 1950, 1951, 1952, 1953, 1954, 1955, 1956, 1957, 1958, 1959, 1960, 1961, 1962, 1963, 1964, 1965, 1966, 1967, 1968, 1969, 1970, 1971, 1972, 1973, 1974, 1975, 1976, 1977, 1978, 1979


    Combined Cancer/Birth Defect
    Prop 65 Warning

    WARNING This product can expose you to chemicals including Benzene which is known to the State of California to cause cancer on birth defects or other reproductive harm. for more information, visit