Spark Plugs 4pk 576s

The ACCEL Spark Plugs 4pk 576s is a matched set of four shorty spark plugs engineered for small-displacement and high-revving engines where compact design and reliable ignition are essential. With a 14mm thread size and 0.460-inch reach, these resistor-type plugs deliver consistent firing across the RPM range while fitting applications requiring minimal clearance under the valve cover or in tight engine bays.

Each plug features a tapered seat design that creates a secure, leak-free seal without requiring a washer—a specification critical for older carbureted engines and modern sealed combustion systems alike. The resistor construction suppresses radio frequency interference, making these plugs suitable for both street and motorsport applications where ignition noise suppression improves engine electronics performance. The four-pack format ensures you have a complete matched set for four-cylinder engines, maintaining balanced combustion across all cylinders and simplifying inventory management for enthusiasts and technicians performing scheduled maintenance.

These shorty plugs are favored in vintage motorcycle engines, small-displacement racing mills, and equipment engines where factory specifications call for compact reach plugs. Buyers sourcing ACCEL 576s spark plugs for replacement or performance tuning value the brand's long track record in ignition systems and the precision manufacturing that ensures consistent performance across the set.

TacticalSurplusUSA stocks genuine ACCEL ignition components and OEM-equivalent spark plugs for a wide range of applications. Whether you're rebuilding a classic engine, maintaining high-performance equipment, or stocking shop inventory, verify that the 14mm thread and 0.460-inch reach match your specific engine's spark plug requirements before installation.