U-Groove Spark Plug Header Plug

ACCEL U-groove performance spark plugs produce a larger spark for more power at high RPMs. Improves throttle response and fuel economy, less fouling. Purified alumina insulator prevents arcing. Machine rolled threads protect heads.

Features:

• Header-Box
• U-Groove Ground Electrode
• Five-Rib Aluminum Insulator
• Copper Core Nickel/Chrome Steel
• Electric Heat Seal
• Copper-Glass Gas-Tight Seal
• Less Flame Dissipation

U-Groove Spark Plug Header Plug | 14mm Thread | .460 in. Reach | Heat Range 5 | Tapered Seat | 5/8 Hex | Projected Tip | Resistor | 4 Pack |