Sonnax 74574-HD Heavy Duty Overrun Clutch Hub 4L60, 4L60-E, 4L65-E, 4L70-E Alto (1) Pressure Switch Manifold (includes

(1)  Pressure Switch Manifold (includes fluid temperature sensor)

Interchange Part Number: HV 064

New style Forward Piston Return Spring Assembly (ACDelco - enables use of bonded piston in pre-97 units)

Pump noise

Sonnax 74574-HD Heavy Duty Overrun Clutch Hub 4L60, 4L60-E, 4L65-E, 4L70-E Alto (1) Pressure Switch Manifold (includesOther Part Number: 3587255620 Product Name: Automatic Transmission Clutch Hub Fitment Type: Performance Custom Items Included: Heavy Duty Overrun Clutch Hub Manufacturer Part Number: 74574 HD UPC: Does not apply Material: Steel Vintage Part: No Brand: Sonnax Series: High Performance Department: Performance Type: Clutch Hub Product Type: Performance Transmission Parts Universal Fitment: Yes Product Details: Performance Automatic Transmission Clutch Hub