V-Power Spark Plug

The NGK 4177 TR6 V-Power spark plug is engineered to enhance ignitability and performance. Its design incorporates a 90-degree V-Groove center electrode, which allows the spark to occur closer to the outer edges of both the center and ground electrodes. This configuration promotes better flame expansion, reduces quenching, and ultimately improves the spark's ignitability. Constructed with a high-grade alumina silicate ceramic insulator, this spark plug offers increased strength to minimize dielectric punch-through. The center electrode features a copper core with a nickel tip, while the ground electrode is also made of nickel, contributing to efficient electrical conductivity and durability. The spark plug has a "Mid Projection" center electrode design and a "Standard" ground electrode tip design. Trivalent metal plating provides superior anti-corrosion and anti-seizing properties, eliminating the need for anti-seize compound. Additionally, cold-rolled threads help prevent cross-threading and cylinder head damage during installation. This spark plug comes pre-gapped to 0.040" (1.0 mm) but may require minor adjustments to match specific engine requirements using a spark plug gap tool. For optimal engine performance, gaps should remain within ±0.004" of the OE-recommended value. The NGK 4177 TR6 is classified as one heat range colder, often recommended for engines with significant horsepower increases (100+ HP) or for forced induction/nitrous applications. It is identified by its "TR6" part number and "4177" stock number. This V-Power spark plug is part of NGK's copper/nickel series, offering a balance of performance and durability.