This is the P5 Turbo Off-Road Very Hot Glow Plug from O.S. Engines.
FEATURES: Very hot plug for turbo cylinder head engines such as the O.S .21 VZ-B V-Spec and most .18 -.28 cu in (2.9 - 4.6 cc)...
This is the P3 Glow Plug for use in the OS Max .21 VZ-V Spec and most other .18 -.28 cu in (2.9 - 4.6 cc) turbo head racing engines.
FEATURES: Ultra Hot Type Plug, designed for reliable low speed and...