GM 6L80 and 6L90 transmissions often suffer failure of the 4-5-6 clutch assembly due to flexing and bowing of the backing plate (coning)—especially when your clutch-apply pressures exceed OE specifications. Sonnax clutch backing plates are designed to minimize flexing/bowing when the clutch is applied, drastically reducing the likelihood of clutch plate distortion. Their stiffer backing plate design outperforms OE and aftermarket plates.
Brand:
Manufacturer’s Part Number:
74140-01K
Part Type:
Product Line:
Summit Racing Part Number:
SOX-74140-01K
Automatic Transmission Rebuild Component Type:
Clutch backing plate
Remanufactured:
No
Quantity:
Sold as a kit.
Notes:
Fits the 3-4 clutch assembly. Designed for use with GM high energy clutch pack with seven .067 in. frictions and six .095 in. steels.
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