Sav-A-Thread Tool Kit Kit repairs spark plug holes for 14mm short or long reach plugs on aluminum heads.

Thread Insert for Big Twin Transmission Cover Heli-Coil thread inserts only for Big Twin transmission cover with locking insert and thread size of 5/16 inch x 18 and length of .469 inch. Includes 12 inserts drill size of 21/64. FITS...

Thread Insert for Case Bolt and Generator Heli-Coil thread inserts only for case bolt and generator with thread size of 5/16 inch X 24 and length of .469 inch. Includes 12 inserts drill size 21/64.

Thread Insert for Drain Plug, Chain Case, XL Transmission Heli-Coil thread inserts only for drain plug Big Twin chain case and XL transmission with thread size of 1/2 inch X 20 and length of .375 inch. Includes 6 inserts drill...

Thread Insert for Front and Rear Brake Drums Heli-Coil thread inserts only for front and rear brake drums with thread size of 3/8 inch x 20 and length of .375 inch. Includes 6 inserts drill size of 25/64. FITS Harley...

Thread Insert for Head Bolts Heli-Coil thread inserts only for head bolts with thread size of 7/16 inch X 16 and length of .656 inch. Includes 6 inserts drill size 29/64. FITS Harley Davidson FL 1948 Harley Davidson FL 1949...

Thread Insert for Multiple Applications Heli-Coil thread inserts only for special thread series with thread size of 1/4 inch X 24 and a length of .500 inch. Includes 12 inserts drill size 17/64.

Thread Insert for Multiple Applications Heli-Coil thread inserts only for special thread series with thread size of 1/4 inch X 20 and a length of .375 inch. Includes 12 inserts drill size 25/64.

Thread Insert for Multiple Applications Heli-Coil thread inserts only for special thread series with thread size of 3/8 inch X 16 and a length of .562 inch. Includes 12 inserts drill size 25/64.

Thread Insert for Multiple Applications Heli-Coil thread inserts only for special thread series with thread size of 3/8 inch X 24 and a length of .562 inch. Includes 12 inserts drill size 25/64.

Thread Insert for Pan D Rings The Heli-Coil thread inserts only for pan D rings with thread size of 10-14 and a length of .285 inch. Includes 12 inserts drill size of 13/64. FITS Harley Davidson FL 1948 Harley Davidson...

Thread Insert for Spark Plugs Heli-Coil thread inserts only for spark plugs with thread size of 16mm and a length of .500 inch. Includes 6 inserts drill size of 23/32.

Thread Insert for Timing Plug Heli-Coil thread inserts only for timing plug with thread size of 5/8 inch x 18 and a length of .325 inch. Includes 6 inserts drill size 41.64.

Thread Insert for XL Engine and Transmission Drain Plug Heli-Coil thread inserts only for engine and transmission drain plug with thread size of 1/2 inch X 13 and length of .375 inch .Includes 6 inserts drill size 17/32. FITS Harley...

Thread Repair Kit for Case Bolt and Generator The Heli-Coil thread repair kit is for case bolt and generator with thread size of 5/16 inch X 24 and length of .469 inch . This kit includes tap installation tool 12...

Thread Repair Kit for Drain Plug, Chain Case, XL The Heli-Coil thread repair kit is for drain plug Big Twin chain case and XL transmission with thread size of 1/2 inch x 20 and length of .375 inch. This kit...

Thread Repair Kit for Head Bolt The Heli-Coil thread repair kit is for head bolt threads with thread size of 7/16 inch X 16 and length of .656 inch. This kit includes tap installation tool 6 inserts and complete instructions....

Thread Repair Kit for Multiple Applications Thread size is 1/4 inch - 24 with length of .500 inch.

Thread Repair Kit for Multiple Applications Thread repair kit is for cam cover screw tappet guide oil pump stud timer and mounting threads. Thread size is 1/4 inch x 20 with length of .375 inch. This kit includes tap tool...

Thread Repair Kit for Multiple Applications Thread repair kit is for cam cover screw tappet guide oil pump stud timer and mounting threads. Thread size is 3/16 inch x 16 with length of .562 inch. This kit includes tap tool...

Thread Repair Kit for Multiple Applications Thread repair kit is for cam cover screw tappet guide oil pump stud timer and mounting threads. Thread size is 3/8 inch x 24 with length of .562 inch. This kit includes tap tool...

Thread Repair Kit for Pan D Rings The Heli-Coil thread repair kit is for pan D rings with thread size of 10-24 and length of .285 inch. This kit includes tap installation tool 12 inserts and complete instructions. FITS Harley...

Thread Repair Kit for Spark Plugs The Heli-Coil thread repair kit is for spark plugs with thread size of 18mm and length of .500 inch. This kit includes tap installation tool 24 inserts and complete instructions.

Thread Repair Kit for Transmission Cover The Heli-Coil thread repair kit is for transmission cover with locking insert with thread size of 5/16 inch X 18 and length of .469 inch. This kit includes tap installation tool 12 inserts and...