Instructions for Installing Thin Wall (14-mm) Spark Plug Thread Repair Inserts
Full-Torque® thread repair inserts are made of hard anodized aluminum for spark plug holes in aluminum cylinder heads and steel, for cast iron heads. FFT-Style Deep Reach inserts match the Ford Triton 4.6, 5.4 and 6.8 liter engines. Inserts for aluminum heads are made of hard anodized aluminum for optimum heat transfer.
When installing just one insert, such as in an in-frame repair, use the matching style Deep Reach Insert. If the heads are off the vehicle, you should replace them all with the Fully Threaded Style to upgrade the head to Fully Threaded spark plugs. This prevents future failures of the other plug holes and warranty claims.
PLEASE NOTE:
The same installation tools work for the fully threaded or Short Style inserts on all 14mm spark plug holes in Cast Iron and Aluminum heads. Steel or stainless steel inserts or coils should not*be used in aluminum heads, because of differences in heat transfer.
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