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35570-75 Heavy Duty "D" Clutch Backing Plate, ZF8HP55/ZF8HP70/ZF8HP75
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SONNAXPART NUMBER: 852-35570-75

35570-75 Heavy Duty "D" Clutch Backing Plate, ZF8HP55/ZF8HP70/ZF8HP75

$3499
More than 10 available
ShippingShips on Sep 14, 2026
Lowest PriceLowest Price Guarantee

GM
    Heavy Duty "D" Clutch Backing Plate
  • ZF8HP55/ZF8HP70/ZF8HP75

    Sonnax 35570-75 Features:

    The “D” clutch in ZF8HP55, ZF8HP70 and ZF8HP75 transmissions has a thin, stamped OE backing plate that allows flexing and bowing (coning) of the clutch pack. This wears the clutches unevenly, generating and concentrating extra heat which leads to clutch burnup. The result is slipping or no 4th through 8th and Reverse Gears, as well as ratio codes. Sonnax heavy duty “D” clutch backing plate 35570-75 is designed to prevent flexing when the clutch is applied, eliminating a leading cause of “D” clutch failure.

  • 2X thicker than weak, stamped OE backing plate for significantly improved protection against burnup
  • Easy to install, no special tools or machining required
  • Prevent comebacks by installing in units that have not yet failed
  • Specs:

  • Material: Billet Steel

    Replace Weak OE Automatic Transmission Parts

    Replace thin and weak OE clutch backing plates with thicker and stiffer units from Sonnax. Great for daily drivers and street/strip machines, Sonnax Clutch Backing plate provide added durability and will reduce clutch distortion and burn up.

Part TypeAutomatic Transmission Clutch Backing Plate
Product LineSonnax Clutch Backing Plates
BrandSONNAX
Package Height0.55
Package Width7.3
Package Length7.65
Weight0.73 PG
Part CategoryPerformance Parts
Part FitmentSemi Universal
Vendor Part Number35570-75
Package Qty1
Package TypeEA
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Some parts are not legal for use in California or other states with similar laws / regulations
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