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Casting Repair Products > Full-Torque Products > Spark Plug Hole Thread Inserts > Spark Plug Thread Repair Kits - Inserts > Order # FFT4S10100L-5  
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Order # FFT4S10100L-5, Spark Plug Thread Repair Kits - Inserts

Inserts used for cast iron cylinder heads are made of steel for proper heat transfer. Inserts used for aluminum heads are made of aluminum and hard anodized for proper heat transfer and thread strength.


Shipping Weight

0.80 oz

Thread Size

10mm x 1.00


14.5 mm


11.4 mm


13.1 mm

Piloted Tap



Aluminum (SHORT)

Units Per Package



Discounts applied to multiple packages of inserts
All inserts work with both tapered seat and gasket seal type spark plugs


·  Deep Reach Style

·  Spark Plug Thread Repair Kits - A

·  Spark Plug Thread Repair Kits - B

·  Spark Plug Thread Repair Kits - C