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:

• Shorty Spark Plugs For Tubular Exhaust Headers
• Eliminates Dimpling Headers For Added Clearance
• Shorter Overall Plug Length Vs. OE Style Plug
• Copper Core Center Electrode
• Projected Tip
• Helps Eliminate Burned Spark Plug Boots
• Shorty Header Spark Plug

U-Groove Spark Plug Header Plug | 14mm Thread | .460 in. Reach | Tapered Seat | 5/8 Hex | Projected Tip | Resistor | 2 Of PN[0576S-4] | 8 Pack |