Eastern Tools & Equipment Spark Plug Thread Insert

Eastern Tools & Equipment spark plug thread inserts (also called spark plug thread repair inserts or spark plug rethreaders) restore stripped or damaged spark plug threads in the cylinder head. They give you a way to repair the hole without replacing the head.

Key Features:

• Replaces damaged spark plug threads on aluminum cylinder heads only
• Installs a new threaded insert at the original thread location
• Made to be used with a matching spark plug insert reamer/tap, which opens up the damaged threads before the insert goes in
• Available in more than one insert length to suit different head thread depths

A thread insert repair is a cost-effective fix for cross-threaded, stripped, or worn spark plug holes. It helps the spark plug seat and seal properly again. Choose the insert length that matches your spark plug hole and thread depth.