Number 3 No 3 1.2v RC Nitro Engine Glow Plugs .12 - .28
70117 No 3 Glow Plug for all Models 1/10 HSP Upgrades Number 3 Hot
70117 No 4 Glow Plug for all Models 1/10 HSP Upgrades Number 4 Warm - Medium
Number 4 No 4 1.2v RC Nitro Engine Glow Plugs .12 - .28
YA-0273BK RC Nitro Engine Turbo Glow Plug Protector 4 Black Alloy
YA-0272BK RC Nitro Engine Standard Glow Plug Protector x 1 Black Alloy