4PCS Compression Tester Automotive Adapter,Thickened O-Ring Airtight Seal Cylinder Compression Tester Adapter,Anti-Rust Spark Plug Testers Adaper for Gas Engine,Motorcycle

Four adapters. One clean reading. No guessingProduct AttributesColors: Brass ColorSizes: 10mm x 1.0 Adapter: 1.26*0.71*0.71 inch12mm x 1.25 Adapter: 1.26*0.71*0.71 inch16mm x 1.5 Adapter: 2.03*0.71*0.71 inch18mm x 1.5 Adapter: 1.26*0.94*0.94 inchWeight: 3.93 ozMaterial: BrassPackaging: 4*Spark Plug AdapterPackage Sizes: 4.33*3.34*0.83 inchProduct Feature & FunctionsCovers Four Thread SizesIncludes 10mm×1.0, 12mm×1.25, 16mm×1.5, and 18mm×1.5. Works with most compression testers that use 14mm×1.25 threads – check your setup before orderingTight Threads + Rubber SealPrecision‑cut threads screw in smoothly and stay snug. A rubber ring helps seal the connection and protects threads during repeated useSolid Brass BuildBrass resists wear and holds up to repeated tightening. Won't strip or deform easily over time

• Four Thread Sizes: You receive 4 car compression tester adapters with thread specs: 10mm × 1.0, 12mm × 1.25, 18mm × 1.5, and 16mm × 1.5. Multiple sizes cover various engine types. Check your thread specs before buying to confirm compatibility
• Gas Engine Coverage: This car engine compression tester adapter kit works on many gas engines. Motorcycles, snowmobiles, outboard motors, and lawn mowers are included. Compatible with testers that have a 14mm × 1.25 thread (like model W80579). Verify fit before purchase
• Precision Thread Build: These spark plug adapters use a precision-cut thread design. A strong connection is created. The spark plug fits tightly against the compression tester. A rubber ring adds sealing performance. Repeated use will not damage the threads
• Brass Material Strength: Our car compression tester adapter is made from brass. High strength and hardness are provided. The structure stays sturdy and stable. Wear resistance and durability are built in. High-temperature environments are handled for long-term stable use
• Simple to Use: No extra tools or complicated steps are needed. Install the adapter onto the threaded connector. Connect to the corresponding engine port. Start testing. Accurate compression readings are given. An essential choice for car engine maintenance