Comprehensive carburetor O‑ring and seal set for Traxxas TRX nitro engines (including TRX 2.5, 2.5R, and 3.3). Includes a mix of rubber O‑rings, crush washers, and a carburetor level seal with brass installation tools to ensure proper sealing and prevent air or fuel leaks in your carburetor assembly. Perfect for routine maintenance, rebuilding a carburetor, or restoring optimal fuel delivery and performance.