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Generator Spark Plug

Generator spark plug R5B12-77C match for GI3-1, GI3-5/ FB77WPCC replace 243-4291

G3600 series generator spark plug match for 243-4291 Cummins Q19G

Wartsila Generator Spark Plug , Nickel Plated Copper Spark Plugs 77 Heat Range

Spark Plugs match for 243-4291 for Denso GI3-1 Champion FB77WPC Cummins Q19G

Corrosion Resist Double Iridium Spark Plugs Champion FB77WPCC Natural Gas Engine

Generator Spark Plugs Nickel Copper with Iridium spark plug match for Denso GI3-1 Champion RB77WPC

Apply For:Guascor Wartsila Cummins WaukeshaFit For:243-4291 Champion FB77WPCC Denso GI3-5
Electode:J TypeThread:M18x1.5
Hex:7/8”(22.2mm)Reach:20.6mm (13/16”)
Heat Range:77Resistor:Yes
Gap:0.3mmElectrode Materical:Iridium

What is spark plug:

A spark plug is a device used in an internal combustion engine — that is, an engine that derives its power via exploding gases inside a combustion chamber — to ignite the air-fuel mixture.

Cars typically have four-stroke gasoline engines, which means there are four strokes, or movements, to the moving parts inside the engine per rotation. Inside each cylinder is a piston, which moves up and down within the cylinder to compress the gas for combustion, and pushes the exhaust gases out after combustion. The piston is operated by an arm that attaches to the crankshaft, a shaft that extends through the bottom of the engine. The piston goes up and down twice during each rotation, hence the four strokes -- up, down, up, down.

The spark plug is positioned at the top of the cylinder, where the air-fuel ratio is compressed. The tip of the plug sits inside the engine, recessed into the side of the cylinder wall. The other end remains outside the engine and is attached to a wire that is also attached to the distributor.

Thread SizeM18x1.5
Reach20.6mm (13/16”)
Seat TypeGasket
Heat Range77
Electrode Type"J" Gap industrial electrode
Center Electrode MatericalNickel Copper with Iridium
Ground Electrode MaterialNickel with Iridium





Advantages for the Ordinary spark plugs:

1. ISO standard wiring terminal post: combined with coating at high temperature, specific corrosion resistance and stamping resistance, to ensure reliable connection with high voltage wire, non-destructive conduction of electric energy;


2. High density insulating ceramic, using high content alumina composition, ultra-fine powder formula, isostatic pressing molding process, to ensure the insulation and mechanical properties in extreme environment;


3. Automatic metal shell production process and high nickel plating ratio, to ensure good torsion resistance and corrosion resistance;


4. Labyrinth memory outer sealing gasket to ensure the sealing ability and installation flexibility of the cylinder cover;


5. Using laser welding technology to ensure the firmness of precious metals; extremely thin ignition electrode, ignition energy is more concentrated, reduce the voltage required for ignition, start faster, accelerate faster, idling speed is more stable, and fuel is more economical.

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