HOW DO I “READ” A SPARK PLUG? Being able to “read” a SPARK PLUG can be a valuable tuning aid. By examining the insulator firing nose color, an experienced engine tuner can determine a great deal about the engine’s overall operating condition. In general, a light tan/gray color tells you that the SPARK PLUG is operating at optimum temperature and that the engine is in good…

Gapping and Indexing   GAPPING Since the gap size has a direct effect on the voltage necessary to jump the gap and ionize (light) the air-fuel mixture, careful attention is required. While plugs are pre-gapped from the factory, the gap may need to be adjusted for the vehicle that the SPARK PLUG is intended for. Those with modified engines must remember that higher compression or forced induction…

Wire Sets Installation STEP 1: Remove the old SPARK PLUG wires, one at a time, replacing them with the new NGK wires. Follow the numbers clearly shown on each wire. STEP 2: Use the existing clamps and follow the original wire paths. STEP 3: Press the boot end of the wire onto the SPARK PLUG until it snaps on securely. Insert the other end firmly into the proper terminal on the distributor cap. STEP…

SPARK PLUG Installation Torque is one of the most critical aspects of SPARK PLUG installation. Torque directly affects the ability of the SPARK PLUG firing end to dissipate heat to the cylinder head. A SPARK PLUG that is under-torqued will not be fully seated in the cylinder head and heat dissipation will be slowed. As a result, the firing end of the SPARK PLUG can overheat and pre-ignition can occur.…

Wire Sets Basics NGK variable pitch resistor cables provide uniform resistance and ensure outstanding electrical conductivity in high-quality cables. This produces the impedance necessary to suppress radio interference throughout the entire frequency spectrum. The radio-frequency interference (RFI) noise is generated by ignition systems and can interfere with computer controls and on-board electronic…

SPARK PLUG Basics SPARK PLUGs have been around as long as internal combustion engines have and are often a misunderstood component. This basic guide is designed to assist the technician, hobbyist or race technician in understanding, using and troubleshooting SPARK PLUGs. SPARK PLUGs are a “window” into the engine and can be a valuable diagnostic tool. The SPARK PLUG displays the condition…

Get the same NGK quality and performance for all of your vehicles. Our line for non-automotive applications includes SPARK PLUGs and other ignition parts for snowmobiles, motorcycles, jet skis, lawn mowers and more. Power Sports   SPARK PLUGs Featuring a 98% pure copper core and high-grade alumina silicate ceramic for improved throttle response, service life and performance. Cold-rolled threads…

NGK SPARK PLUGs come standard on more vehicles in North America than any other manufacturer. The OE-style SPARK PLUG line brings that original equipment SPARK PLUG to the automotive aftermarket, delivering OE fit, form, function and performance for your engine.

NGK nickel SPARK PLUGs feature a specially designed v-groove center electrode, improving ignitability and reducing quenching. The 98% pure copper core delivers increased heat dissipation for more reliable starts and reduced risk of overheating. Cold-rolled threads prevent cross-threading and damage to cylinder heads Trivalent plating eliminates need for anti-seize High-grade alumina silicate ceramic…

G-Power® NGK G-Power® platinum SPARK PLUGs feature a single platinum tip, 98% pure copper core and a .6 mm fine-wire center electrode for more focused sparks and better ignitability. Trapezoidal ground electrode reduces quenching High-grade alumina silicate ceramic for stronger insulation Cold-rolled threads prevent cross-threading and damage to cylinder heads Laser Platinum Laser Platinum is designed…