1965–1973 Mustang Flexplate – 157 Tooth, 28 oz. for C4 Transmission

Part Number: TRA-650-711
OEM Reference #: C3AZ-6375L
OEM-Style Reproduction for Classic Ford V8 Applications

This 157-tooth, 28oz externally balanced flexplate is a direct replacement for Ford part number C3AZ-6375L, designed to work with C4 automatic transmissions behind small-block V8 engines. It's built to factory specs for reliable starter engagement, proper balance, and long-term durability in restoration or conversion projects.

Important: This flexplate is designed specifically for use with C4 transmissions. 

Key Features:

• OEM-style 157-tooth ring gear

• 28oz external balance for 289 and early 302 small block V8s

• Designed for small bellhousing C4 transmissions

• Matches 10.5" torque converter bolt pattern

• High-quality steel construction

• Factory-style fit and function

• Direct replaces Ford part #C3AZ-6375L

C4 Bellhousing Compatibility

C4 transmissions were produced with two different bellhousing sizes.

• The small bellhousing uses a 157-tooth flexplate (this part)

• The large bellhousing requires a 164-tooth flexplate (not compatible)

Please verify bellhousing size and tooth count before ordering.

Fits the Following Applications:

• 1965–1968 Mustang 289, C4 A/T

• 1968–1973 Mustang 302, C4 

• 1967–1968 Cougar 289/302, C4

• 1963–1964 Falcon 289-2V 

• 1965–1968 Falcon 289

• 1968–1970 Falcon (before 1/1/70), 302, C4

• 1964–1964 Fairlane 289-2V

• 1966–1968 Fairlane & Torino, 289

• 1968–1971 Fairlane, Torino, and 70½ Falcon, 302, C4

• 1969–1978 F-100 to F-350 with 302

• 1966–1968 Bronco 289, C4