ACCEL 0574S-4 U-Groove Spark Plug Header Plug 0574S-4
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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.
|Dimensions||3.4 × 3.5 × 1 in|