RADIUM Engineering Banjo Bolt and Fitting

RADIUM Engineering Banjo Bolts & Fittings: Precision Where It Counts

When routing high-performance fuel lines and oil plumbing through tight engine bays, the quality of every connection matters. RADIUM Engineering has built a reputation since 2010 for applying serious engineering discipline to every component they produce, and their banjo bolt and fitting lineup is a perfect example of that philosophy in action. Since 2010, Radium Engineering's goal has been to design and produce the highest-quality aftermarket automotive products, relying on a core team with a passion for innovation and designing everything in-house using the latest computer simulation and modeling techniques.

Two Distinct Banjo Fitting Families

RADIUM's banjo bolt and fitting offerings split into two clear families, each engineered to solve a specific routing challenge:

• Fixed-Position Low-Profile Banjo Fittings – RADIUM Engineering banjo fittings were specifically designed to have a lower profile than other 90° forged AN adapter fittings on the market, making them excellent for tight areas. They offer 360° swiveling flexibility before the bolt is tightened, but once tight, they do not swivel. This makes them ideal for locking in a precise hose angle during final installation without sacrificing routing flexibility during assembly.
• Low-Profile Swiveling Banjo Fittings – These banjo fittings have the ability to rotate 360 degrees even after installation, are an excellent option for 90-degree connections, are very low profile, and are suitable for use in high-pressure fuel and oil systems up to 400 psi. They are CNC-machined aluminum with an anodized finish, O-ring sealed, and swivel after installation.

Specific Products and Application Coverage

Notable RADIUM banjo bolt offerings include a 10AN Male Press-Fit fitting engineered for all Toyota 2JZ exhaust applications, as well as the 10AN Male Swivel Banjo 13.5mm Press Fit design. The fixed-position fittings can also be used in -10AN ORB ports that share the same 7/8"-14 threads — such as RADIUM Engineering catch cans and fuel filters. For builders who need to maintain or replace sealing components, RADIUM offers a dedicated service kit (20-0723) that includes all the necessary parts to fully service any of the various low-profile banjo fittings.

Construction and Finish Quality

Every RADIUM banjo fitting reflects the brand's commitment to both function and aesthetics. Fittings are machined from 6061 aluminum, with the banjo itself finished in black anodize and the banjo bolt in RADIUM's signature green anodize, and each piece is laser engraved with the logo and torque specification. That laser-engraved torque spec is a small but meaningful detail — it keeps critical installation data right on the part, eliminating guesswork in the shop or at the track.

Why RADIUM Stands Out in This Category

RADIUM leads the market with their unique offering of swiveling fittings. All RADIUM products are carefully planned with thorough R&D and designed in-house using the latest computer simulation and modeling techniques, and extensive testing ensures performance exceeds consumer expectations — which is why top motorsports competitors and enthusiasts worldwide rely on RADIUM Engineering products. Whether you're plumbing a catch can, building a custom fuel rail, or routing oil lines on a turbocharged build, RADIUM's banjo fittings deliver the precision, low profile, and finish quality that serious builders demand.