Collection: Weld on fittings - Speedflow

SS Racetech Rods & Customs stocks a comprehensive range of Speedflow weld-on fittings — essential components for creating robust, leak-free connections in custom automotive fabrication. Whether you're building a fuel tank, oil system, or custom headers, we have the right fitting for your application.

Filler Cap & Weld Bung Assemblies — Non-vented cap with internal O-ring for a secure, hand-tightened seal. Ergonomic finger grips for easy operation. Ideal for tanks, oil fillers, and custom applications.

990 Series Female ORB Weld Bung — Available in steel or aluminium to suit your specific application. A reliable port weld bung for professional fabrication.

997 Series Female NPT Weld Bung — Precision-machined for a secure, leak-free NPT connection. The go-to choice for custom setups and existing system upgrades.

989 Series O2 Sensor Weld Bung — M18 x 1.5 weld fitting designed to accept standard M18 O2 sensors. Perfect for custom headers, engine management, and data logging applications.

999 Series Stainless Steel Male Weld Bung — Precision-machined from high-quality stainless steel for superior corrosion resistance in demanding environments.

999 Series AN Male Hex Weld Bung — Aluminium — Lightweight 6061-T6 aluminium construction with superior weldability and corrosion resistance. Build your custom setup with confidence.