
Required to obtain proper clearance for reliable operation of uprated engines. Background: My machine is out of stock and I need to close the gap 0.004" below standard. This tool + pen allows me to set the gap with surgical precision. Clearance is now fun and fast.

Sunex 884504: High-Quality 3/8-Inch Drive Thin Wall Spark Plug Socket - Metric CR-MO Construction
9 Review

π§ Enhanced OTC 6900 Spark Plug Socket for Ford F-150
9 Review

π§ CTA Tools 2376 - Premium 14mm x 12 Point Spark Plug Socket for Efficient Vehicle Maintenance
9 Review

π§ Effortless Spark Plug Boot Removal Tool for Mercedes Benz V6 V8 - EWK 17mm Wrench
9 Review