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    7 Products

    Compression Testers

    Image of Product. Front orientation. Compression Testers. Compression Testers, Dial Readout.
    Image of Product. Front orientation. Compression Testers. Compression Testers, Digital Readout.

    Dial Readout

    Digital Readout

    Check engine compression to maintain top performance.
    Add an adapter if you tester does not come with an adapter that matches your engine's spark plug thread size.
    Quick-Release Coupler—Testers with a quick-release coupler make it easy to connect and disconnect the gauge and the hose.
    Hose
    Readout
    Type
    Measurement Unit
    Pressure
    Range, psi
    Accuracy
    Digital Display
    Type
    Dial
    Dia.
    Case
    Material
    Lg.
    Material
    Reinforcement
    Batteries
    Included
    Includes
    Features
    Container
    Type
    Each
    For Gasoline Engines
    DialPounds per Square Inch, Kilograms per Square Centimeter, Bar, Kilopascals0 to 300±2%—3"—15"Rubber
    		Fiber Braid—M14×1.25 mm Spark Plug Adapter, Replacement Valve CoreQuick-Release Coupler—0000000000000
    DialPounds per Square Inch, Bar0 to 300±3%—2 3/4"—24"Rubber
    		——M10×1 mm Spark Plug Adapter, M12×1.25 mm/M16×1.5 mm Spark Plug Adapter on 12" Hose, M14×1.5 mm Spark Plug Adapter on 12" Hose, M14×1.5 mm Long Thread Spark Plug Adapter on 12" Hose, 8" Extension Tube, 24" Extension Hose, Repair Parts—Plastic Case00000000000000
     
    For Diesel, Gasoline Engines
    DigitalPounds per Square Inch0 to 300±1%LED—Plastic18"Rubber
    		—Yes1 Spark Plug Adapter, 1 Glow Plug AdapterQuick-Release Coupler—0000000000000
     
    Compression Tester Adapters
    Image of Product. Front orientation. Compression Tester Adapters.
    For Engine
    Type
    Thread Size
    Each
    GasolineM10 x 1 mm0000000000000
    GasolineM12 x 1.25 mm0000000000000

    Cylinder Leak Testers

    Image of Product. Front orientation. Compression Testers. Cylinder Leak Testers.
    Test how well your engine cylinder holds compressed air. Often used after getting a low reading from a compression tester, these leak testers show the percentage of the air leaking out of your cylinder. Remove all spark plugs from your engine and rotate it so the cylinder being tested is at the top. Make sure the cylinder is top dead center on its stroke, with both valves closed. Connect one end of these testers to the spark plug hole, and the other to a compressed air source. Fill the cylinder to its specified air pressure, and the gauge on these testers will show how much air is leaking out.
    Hose
    Air Connection
    Readout
    Type
    Measurement Unit
    Pressure
    Range, psi
    Accuracy
    Dial
    Dia.
    Lg.
    Material
    Quick-Disconnect
    Style
    Coupling
    Size
    Includes
    Features
    Container
    Type
    Each
    For Gasoline Engines
    DialPounds per Square Inch, Bar0 to 100±3%2 3/4"26"Rubber
    		Industrial1/4M14×1.5 mm Spark Plug Adapter, M14×1.5 mm Long Thread Spark Plug AdapterLeak Percentage Dial, Quick-Release CouplerPlastic Case00000000000000
     
    Whistles
    Image of Product. Front orientation. Cylinder Leak Tester Whistles.
    Add a whistle to help pinpoint the location of a leak. If the sound of the whistle changes while the cylinder moves through its stroke, you’ve found the leak. Connect to the end of the hose or adapter on a leak tester.
    Hose
    For Engine
    Type
    Thread Size
    Lg.
    Material
    Each
    GasolineM14 × 1.5 mm
    M18 × 1.5 mm    		24"Rubber
    		0000000000000
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