SKU: RHP823-12-08-2
UPC: 810465013909
MPN: 823-12-08-2
The REDHORSE PERFORMANCE 12AN 45-Degree Male Adapter connects -12 AN male fittings to 1/2 inch national pipe thread male ports at a 45-degree angle. Machined from aluminum with a black anodized finish, this adapter serves builders routing fuel lines, oil cooler plumbing, or coolant systems where straight fittings create clearance problems. The 45-degree bend allows hose runs to clear headers, frame rails, and other obstructions without kinking or excessive stress on connections. For shops and enthusiasts working on high-performance builds, this adapter bridges the gap between AN-style racing hardware and the threaded ports found on factory and aftermarket components.
This adapter uses the AN (Army-Navy) specification on one end, featuring the flare-style connection that racing and performance applications demand for vibration resistance and repeated disassembly. The opposite end terminates in a 1/2 inch national pipe thread male fitting, compatible with cast aluminum manifolds, steel bungs, and aftermarket accessories using standard tapered pipe threads. Black anodizing provides corrosion resistance while maintaining a clean appearance in engine bays where aesthetics matter. The male-to-male configuration means both ends thread into female ports rather than accepting hoses directly, making this piece ideal for transitioning between fitting standards at junction points in your plumbing system.
Use this adapter where your -12 AN hard lines or braided hoses need to connect with 1/2 inch pipe thread ports on fuel rails, oil filter housings, transmission coolers, or power steering reservoirs. The 45-degree angle works particularly well in tight engine compartments where space constraints make straight adapters impractical. Install with appropriate thread sealant on the tapered pipe thread side and ensure the AN connection seats properly against its mating flare surface. Browse our parts and accessories selection for related fittings, or check our firearms inventory while you are here.
AN fittings use a 37-degree flare that seals metal-to-metal without tape or sealant, designed for vibration resistance and easy disassembly. Pipe thread fittings use tapered threads that create a seal as they tighten, requiring thread sealant. This adapter lets you connect systems using both standards.
Only on the pipe thread end. The AN side seals through the flare connection against a matching AN female fitting, requiring no sealant. The tapered pipe thread side needs PTFE tape or pipe thread sealant to prevent leaks at the threaded junction.
The black anodized aluminum construction handles common automotive fluids including gasoline, diesel, engine oil, transmission fluid, coolant, and power steering fluid. For specialty fuels like E85 or methanol, verify compatibility with all system components.
The 45-degree angle reduces hose stress and improves routing in tight spaces. Straight fittings can force hoses into sharp bends that restrict flow or cause premature wear. Angled adapters let hoses follow natural paths around engine components.
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