This is the Replacement O-ring header gasket for the Traxxas 2.5 Engine.   
                 This is located on the header of the engine.                  
                                                                               
FEATURES: Red silicone construction.                                           
                                                                               
INCLUDES: One 12.2x1mm o-ring.                                                 
                                                                               
REQUIRES: Nothing.  This is a direct replacement part.