Coin-Type Spark Plug Gap Gauge 0.6–2.4mm Measuring Tool

Keep your engine running at peak efficiency with this Coin-Type Spark Plug Gap Gauge. Compact enough to slip into your pocket yet precise enough for professional use, this coin-shaped measuring tool covers a range of 0.6–2.4 mm (0.02–0.10 inch) — everything you need to set the perfect gap on virtually any spark plug type.

Key Features

• Accurate Measurement Range: Covers 0.6–2.4 mm (0.02–0.10 in), allowing you to precisely calibrate spark plug gaps for improved engine performance and fuel efficiency.
• Coin-Shaped Compact Design: At just 1.5 inches (3.8 cm) in diameter, this tool fits easily in a toolbox, glove compartment, or pocket. One-handed operation makes it ideal for working in tight engine bays.
• Universal Compatibility: Works with standard, platinum, and iridium spark plugs, making it a versatile addition to any automotive maintenance kit.
• Durable Construction: Crafted from high-hardness stainless steel or alloy steel — wear-resistant, rust-proof, and built to maintain long-term dimensional accuracy without deforming.
• Available in Multiple Finishes: Choose from Silver, Rose Gold, or Gold to suit your style.
• Essential Auto Repair Tool: Ideal for auto repair shops, dealerships, and DIY enthusiasts who want to quickly verify and adjust spark plug gaps to manufacturer specifications.

Specifications

• Measurement Range: 0.6–2.4 mm / 0.02–0.10 inch
• Material: High-hardness stainless steel / alloy steel
• Colors: Silver, Rose Gold, Gold
• Size: 1.5 inch / 3.8 cm diameter
• Compatible Plug Types: Standard, Platinum, Iridium

What's in the Box

• 1 × Coin-Type Spark Plug Gap Gauge Measurement Tool

Made in Mainland China.

Please Note: Product images are for illustration purposes only and may not reflect exact size or color. Minor measurement differences may occur due to manual measurement tolerances. Colors may vary slightly from screen to screen.

Learn more: FuelEconomy.gov driving efficiency guidance

Frequently Asked Questions

Q: What spark plug types is this coin-type gap gauge compatible with?

A: This spark plug gap gauge is designed to work with standard, platinum, and iridium spark plugs, making it suitable for a wide range of vehicle makes and models. As long as the required gap falls within the 0.6–2.4 mm (0.02–0.10 inch) measurement range, this tool will handle the job accurately.

Q: How do I use the coin-type spark plug gap gauge?

A: Simply insert the appropriately sized stepped blade or wire of the gauge between the center and ground electrode of the spark plug. The coin-shaped design lets you rotate through the incremental sizes with one hand until you find the blade that fits snugly — without forcing — at your target gap measurement. Adjust the electrode as needed to match your engine's specified gap.

Q: Is this gap gauge durable enough for regular professional use?

A: Yes. The tool is constructed from high-hardness stainless steel or alloy steel, which resists wear, corrosion, and deformation over time. This makes it well-suited for daily use in auto repair shops, dealerships, and by dedicated DIY enthusiasts.

Production & Packaging Notice

To maintain high stock availability and fast shipping times, our items are sourced from multiple verified manufacturing facilities. While the core quality, materials, and product specifications remain identical, you may notice slight variations in the packaging design, manufacturing origin, or the wording of the printed instructions.