This is a replacement 12.2x1mm header O-ring for the Traxxas 2.5 and 2.5R engines. This small O-ring goes inside the exhaust manifold to properly seal the manifold to the back of the engine.


Replacement part for these models:

Jato

Revo

Slayer Pro 4X4

T-Maxx

TRX 2.5R

TRX 3.3