• Patented lip makes sure there is no loss of compression
• Permanent fix to damaged Cylinder threads
• Replacement insert for the MTN9200 repair kit
• Replacement spark plug insert for Ford engines
• Used to repair damaged cylinder heads with blown spark plugs

Used to repair damaged cylinderheads with blown spark plugs this replacement insert has a patented lip to makesure there is no loss of compression. It is a permanent fix to damaged cylinderthreads. Replacing the insert for the MTN9200 repair kit. Specifically made forFord engines.