O.S. P3 Gold Turbo Glow Plug "Ultra Hot"


  • $17.90
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O.S. P3 Gold Turbo Glow Plug "Ultra Hot"

The O.S. P3 Gold "Ultra Hot" Turbo Glow Plug 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. The gleaming gold appearance makes these plugs really stand out, while commemorating O.S.’s 80th anniversary. Even more important, Speed P3 and P4 plugs boast many performance upgrades.


  • 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; Speed P4 ideal for super-hot applications

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