Tube End 3/4-16 LH 1-1/4in x .120in

The Tube End 3/4-16 LH 1-1/4in x .120in from ALLSTAR PERFORMANCE is a precision weld-on threaded tube fitting engineered for high-performance racing and fabrication applications. This left-hand female thread connector is designed to terminate chromoly tubing in fuel systems, brake lines, and custom chassis builds where reliability and structural integrity are non-negotiable. Built to withstand the demands of competition and extreme motorsports environments, this fitting delivers dependable performance for fabricators and racers who require precise, repeatable connections.

Machined from chromoly steel and finished in natural (uncoated) condition, the Tube End 3/4-16 LH accommodates 1-1/4 inch diameter tubing with 0.120 inch wall thickness, making it ideal for mid-wall and heavy-wall applications. The left-hand 3/4-16 female thread provides a secure, weld-compatible interface that resists vibration loosening in high-vibration environments typical of race vehicles and performance builds. The weld-on design eliminates the need for mechanical fasteners at the tube terminus, creating a permanent, leak-free connection with superior fatigue resistance compared to slip-fit or crimped alternatives.

This tube end is essential for custom tube fabrication projects, race car construction, and OEM-style component replacement in fuel system, cooling system, and pneumatic line assemblies. Installers should verify tube dimensions and wall thickness prior to ordering, then weld the fitting using appropriate chromoly welding procedures to ensure joint integrity. The compact footprint (measuring 1.35 x 4.1 x 7.05 inches overall) and lightweight design (0.4 lbs) make it suitable for weight-conscious racing platforms while maintaining the structural strength required for competition-level durability and reliability.