Description:

O.S. glow plugs have always been tough enough to take the heat ? and Speed P3 and P4 Gold Turbo Plugs with 24K gold plating take O.S. innovation to new levels! They?re the perfect complement for .18-.28 cu. in. turbo head off-road racing engines. Even more important, Speed P3 and P4 plugs boast many performance upgrades like being easier to tune, more low-mid range power, faster acceleration and more.
Features:

• Easier to tune
• More low-to-middle range power
• Quicker throttle response
• Faster acceleration
• Better mileage
• Crisper idling, with a difference you can hear
• Increased longevity
• Speed P3 ideal for ultra-hot applications