Adapter Fitting Aluminum 4AN to 1/8 NPT 90 Deg

The Adapter Fitting Aluminum 4AN to 1/8 NPT 90 Deg from ALLSTAR PERFORMANCE is a critical hydraulic or fuel line adapter for custom engine builds, fuel system modifications, and performance cooling circuits. This 90-degree elbow fitting solves a common plumbing challenge when space is tight around the engine bay or fuel cell compartment—allowing you to change line direction without relying on awkward bent tubing or multiple fittings. Whether you're building a carbureted hot rod, a modern EFI swap, or a nitrous-assisted drag car, this adapter bridges the gap between AN (JIC) and NPT (National Pipe Thread) standards, giving you flexibility in sourcing compatible components.

Constructed from lightweight aluminum, this fitting weighs just 0.045 lbs and measures 3.6 × 0.65 × 4.55 inches, making it compact enough for tight engine compartments without sacrificing durability. The 4AN port accepts standard -4 hose and fittings (common in fuel lines and small-displacement cooling systems), while the 1/8 NPT female thread connects to gauges, sensors, or NPT-threaded components. The 90-degree angle eliminates the need for additional elbows, reducing potential leak points and saving real estate on your firewall or chassis. ALLSTAR PERFORMANCE's reputation for precision ensures consistent thread seal and reliable pressure ratings—critical when working with fuel or boost circuits where failure isn't an option.

This adapter is ideal for engine builders, fabricators, and DIY enthusiasts tackling fuel system upgrades, intercooler plumbing, or gauging installations. It pairs seamlessly with aftermarket fuel pumps, pressure regulators, and turbo/supercharger cooling loops where NPT sensor ports are standard. Installation is straightforward—apply appropriate thread sealant (PTFE tape or liquid threadlocker) to the 1/8 NPT end, hand-tighten, then use a wrench on the aluminum body to avoid stripping. Verify your hose size and pressure rating before purchase to ensure this 4AN-to-1/8 NPT configuration matches your system specifications.