116 – ATS Sure-Gap Spark Plug Gapper Tool (Massive Electrode Aircraft)
Available Now on Airparts.aero
Overview
The 116 Spark Plug Gapper Tool, known as the "Sure-Gap," is a precision tool designed for massive-electrode aviation spark plugs (18 mm threads). It enables exact electrode gap settings, eliminating the need for guesswork and protecting igniter integrity. Widely trusted by pilots, mechanics, and flight departments, the tool ensures maximum engine performance, smoother starts, and optimal fuel efficiency.
Technical Specifications
- Part Number: 116
- Compatibility: 18 mm massive-electrode spark plugs (Champion, Tempest, Woodward)
- Material: Durable aluminum body with knurled brass thumb screw
- Gap Range: Factory calibrated for precise electrode spacing (typically .018"–.022")
- Dimensions: ~2.4″ × 1.2″ × 0.5″
- Weight: Approx. 0.1 lb (45 g)
- Usage: Manual operator for closing/increasing spark plug gap by turning the knob
- Shipping Weight: ~0.5 lb
- Certification: Aviation-grade tool — safe for use on certified aircraft systems
- Packaging: Individually bagged, includes easy-to-read instructions
Aircraft & Ignition System Use
- Suitable for Lycoming and Continental engines using massive-electrode plugs
- Commonly used on Cessna, Piper, Beechcraft, Mooney, and experimental aircraft
- Works seamlessly with Champion, Tempest, Woodward, and aftermarket spark plugs
Key Benefits
- Accurate Gapping: Ensures OEM-specified electrode distance, optimizing combustion and fuel economy
- Protects Plug Integrity: Avoids electrode damage that can lead to misfires or early failure
- Simplifies Maintenance: Quick, reliable tool for engine builders, A&Ps, and field mechanics
- Cost-Effective: Extends spark plug life, reducing replacement frequency and downtime
- User-Friendly Design: Knurled thumb screw provides tactile control for precise gap adjustment
Critical Use Cases
- Scheduled Engine Inspections: Check or adjust gap every 50 flight hours during routine inspections
- Pre-Flight Maintenance: Fine-tune gapping after spark plug cleaning or replacement
- Overhaul Preparation: Standard tool in engine rebuild kits to ensure plug readiness
- Training Operations: Ideal for flight schools and GA fleets to maintain engine health and training reliability
Order the 116 Spark Plug Gapper Tool Today
Ensure your engine runs efficiently and reliably with precise spark plug electrode spacing. The 116 Gapper Tool is in stock at Airparts.aero, ready to ship with FAA-compliant documentation and expert aviation support.
