#4 Cap

The #4 Cap from TRIPLE X RACE COMPONENTS is a precision-engineered fluid containment component designed for high-performance racing and modified vehicle applications. This small but critical fitting serves as a protective closure for hydraulic, coolant, or fuel system ports on race engines and transmission assemblies. Whether you're building a competition drag car, street machine, or professional motorsports vehicle, the #4 cap ensures reliable sealing and prevents fluid loss or contamination during operation and storage.

Manufactured from aluminum and zinc-alloy, this cap features a compact design with dimensions of 2.8 x 0.85 x 2.9 inches and weighs just 0.03 pounds, making it an ideal lightweight solution for any race platform where component mass matters. The design provides secure attachment without vibration or loosening under extreme engine loads, g-forces, and thermal cycling. Triple X Race Components engineered this cap to withstand harsh underhood environments while maintaining a positive seal against fluid leakage or pressure loss.

Mechanics and engine builders installing aftermarket cooling systems, custom fuel rails, or high-flow transmission coolers will rely on caps like this to complete system integrity. The #4 designation indicates compatibility with standard race component ports and quick-connect fittings commonly found on Triple X race vehicles. This cap is essential for ensuring optimal performance and reliability in high-stakes racing environments.