4 Pack Spark Plug Adapters For Compression Test Includes M10x1.0 M12x1.25 M16x1.5 M18x1.5 Thread Sizes With O Ring Seals Engine Diagnostic Tool 10mm 12mm 16mm 18mm Cylinder Adapters Heavy Duty Quick Fit
✔️ Includes M10x1.0, M12x1.25, M16x1.5, and M18x1.5 thread sizes
These compression tester spark plug adapters let you connect a gauge to multiple spark plug thread sizes, so you can test the compression in a wide range of gasoline engines. They're ideal for automotive, motorcycle, snowmobile, and small marine diagnostics.
✅ Four adapters included: M10×1.0, M12×1.25, M16×1.5, M18×1.5; heights 1.25" (31.75 mm), 1.25" (31.75 mm), 2.02" (51.31 mm), 1.25" (31.75 mm)
✅ High-purity copper construction for durability and heat resistance
✅ Black rubber O-ring seals ensure airtight compression readings
✅ Compatible with W80577 testers and other gauges with M14×1.25 external threads
💡 What is a compression tester spark plug adapter used for in engine testing? This handy tool lets you seal and connect a gauge to spark plug threads of different sizes for accurate cylinder readings.
- handy for quick diagnostics on motorcycles, snowmobiles, boats, and cars
- ensures airtight seals with O-rings to minimize reading errors
- made from pure copper for wear resistance and heat tolerance
- fits W80577 and many testers with M14×1.25 external threads