O.S. P4 Gold Turbo Glow Plug
The O.S. P4 Gold "Super 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
Some other things to keep in mind are:
- The smaller the engine, the hotter the plug.
- The higher the nitro content, the colder the plug.
- The hotter the day, the colder the plug.
|P5||Very Hot||For V-Spec and most .18-.28 off-road racing Turbo head engines, especially when the temperature is high or for leaner needle settings and high-nitro/high-rpm running|
|P4||Super Hot||For V-Spec and most .18-.28 off-road racing Turbo head engines|
|P3||Ultra Hot||For V-Spec and most .18-.28 off-road racing Turbo head engines|