#12 45 Deg. Tube Swivel

The #12 45 Degree Tube Swivel fitting from EARLS is an essential component for custom fuel and coolant line routing in high-performance automotive builds. Whether you're fabricating a fuel system for a turbocharged engine, repositioning brake lines in a widebody conversion, or plumbing a custom cooling circuit, this swivel adapter lets you achieve precise angles without kinking or crimping hoses. Mechanics and fabricators rely on swivel fittings to eliminate the guesswork of hard-line bends and reduce system stress at connection points.

Manufactured by EARLS, a trusted name in motorsports and performance plumbing, the #12 45 Degree Tube Swivel employs a precisely machined ball-and-socket design that permits full rotational freedom while maintaining a secure, leak-free seal. The 45-degree angle allows controlled directional changes in tight engine bays where 90-degree elbows would obstruct headers, intake manifolds, or accessory brackets. EARLS fittings are engineered to handle high-pressure fuel delivery and coolant circulation in both naturally aspirated and forced-induction applications, with machined aluminum or steel construction that resists corrosion and thermal cycling.

This #12 swivel adapter suits AN12 hose systems common in LS engine swaps, Chevrolet small-blocks, and modern turbocharged platforms where custom fuel and coolant paths are standard practice. Installation is straightforward: thread the fitting into your manifold, adapter block, or hardline end, then connect your AN-rated hose and secure with a swaged ferrule and clamp. The compact 2.7 x 1.55 x 4.9 inch profile and minimal 0.19 lb weight make it ideal for space-constrained underhood layouts. Whether you're a fabricator building complete custom systems or a weekend warrior upgrading fuel delivery, EARLS swivel fittings reduce assembly time and eliminate the need for expensive custom bends.