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Proflow Cylinder Head Ford Thermactor Port Threaded Insert Accessory Bush 5/8-11 od To 7/16-14 id Steel Black Oxide Set of 4 Don’t Miss Out
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Proflow Cylinder Head Ford Thermactor Port Threaded Insert Accessory Bush 5/8-11 od To 7/16-14 id Steel Black Oxide Set of 4 Don’t Miss Out

Original price was: $21.50.Current price is: $10.75.

SKU: SK1035087-US20260126-092757 Category: Tag:

Description

Proflow Small Block Ford Thermactor Inserts

These small block Ford thermactor inserts are designed to thread into your heads to change the thread size. These inserts thread right into the existing cylinder head thermsctorports to allow use of the factory accessory drive bolts.

Also required for many aftermarket cylinder heads to reduce from 5/8 thread down to 7/16 for mounting factory accessories,eg:AFR-1422

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