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Thermactor Inserts, Smog Hole Plugs, Threaded Head Insert, Accessory Bushing/Insert, SB Ford, F4ZZ-6E086-A

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Thermactor Inserts
Calculated at checkout

Product Description

Small Block Ford Smog Inserts

Thermactor Inserts, Order Quantity Required

These Replace OE # F4ZZ-6E086-A


Here you can order the Thermactor inserts alone- no tap or install tool included.

Select the desired quantity by checking the appropriate check box towards the top of the page. You can order: 1, 2, 3, 4 or 8 inserts.

The higher the quantity, the lower the price.


       Features and Sizes

  • Thermactor Inserts are made in the USA
  • Outside threads are: 1-5/8"-11 NC
  • Inside threads are: 7/16"-14 NC
  • Replaces OE # F4ZZ-6E086-A


       Available in the following Quantity

  • One Insert
  • Two Inserts
  • Three Inserts
  • Four Inserts
  • Eight Inserts


Thanks for using Alex's