Spark Plug Gap Tool

The ALLSTAR PERFORMANCE Spark Plug Gap Tool (ALL 96515) is a precision aluminum gauging instrument designed for quick and accurate spark plug electrode spacing. Built with gold anodized aluminum construction, this tool delivers reliable spark plug gap measurement and adjustment for engine tuning and maintenance across a broad range of automotive and small engine applications. The compact, ergonomic design fits easily into any technician's toolkit.

Proper spark plug gap is critical to engine performance, fuel efficiency, and ignition reliability. Too wide a gap causes misfire and weak ignition; too narrow a gap wastes fuel and reduces combustion efficiency. This spark plug gap tool eliminates guesswork by providing direct measurement against calibrated gap specifications. The gold anodized finish resists corrosion and provides visibility of measurement markings, while the aluminum body remains lightweight yet durable enough for repeated shop use. The single-unit design ensures consistency across multiple spark plugs in a single job.

This tool is essential for engine builders, mechanics, performance tuners, and serious DIY automotive enthusiasts. Whether setting gaps on street engines, racing engines, small-displacement generators, lawn equipment, or marine engines, accurate gap measurement is fundamental to proper combustion and engine longevity. ALLSTAR PERFORMANCE has built a reputation for precision motorsports tools, and this gap tool reflects that commitment to straightforward, dependable functionality.

A spark plug gap tool should be a permanent fixture in any serious mechanic's kit. Its low cost and singular function make it one of the highest-value diagnostic tools available. Paired with quality spark plugs and proper timing, accurate gapping ensures starting reliability, optimal idle quality, and peak engine efficiency across all operating conditions.