Review on Boost Engine Performance with Big-Sert OverSized Spark Plug Kit M14x1.25 p/n 5141S by Eric Weber

Name: Boost Engine Performance with Big-Sert OverSized Spark Plug Kit M14x1.25 p/n 5141S
Item: Boost Engine Performance with Big-Sert OverSized Spark Plug Kit M14x1.25 p/n 5141S
Rating: 5

September 01, 2022

Use for previously repaired HeliCoil spark plugs

This wasn't a 30 minute fix for me. The instructions were easy to follow, the quality of the tool is top notch, and the solution saved me over $1,000. Used on a previously remanufactured Toyota 4Runner HeliCoil head.

Pros