3an Male Union Fitting Stainless Steel

The 3AN male union fitting stainless steel by EARLS is an essential component for any serious automotive fuel, oil, or coolant system modification. Whether you're building a custom fuel system for a high-performance engine, upgrading your cooling lines, or integrating aftermarket gauges, this union fitting provides a secure, leak-free connection point that withstands the demands of modified vehicles. Mechanics and enthusiasts rely on EARLS fittings because they eliminate guesswork and deliver predictable performance under pressure and temperature cycling.

Constructed from premium stainless steel, the 3AN male union fitting resists corrosion and oxidation—critical for longevity in engine bays exposed to heat, moisture, and vibration. The 3AN sizing indicates a -3 hose ID (approximately 3/16 inch), a common spec in modern fuel systems and auxiliary cooling circuits where space and weight matter. The male union design threads directly onto female -3AN ports, creating a positive mechanical lock that won't weep or fail under pulsation. Stainless construction ensures this fitting maintains integrity through thermal expansion cycles and resists damage from brake fluid, gasoline, and synthetic coolants.

Installation is straightforward for anyone with basic mechanical skill: thread the fitting into a prepared -3AN female port using appropriate wrenches to avoid stripping, then connect your -3AN hose or hard line. This fitting is ideal for fuel rails, pressure gauges, coolant bypass lines, and auxiliary heater setups on street performance and race vehicles. Compact dimensions (1.2 × 0.85 × 2.95 inches) and minimal weight (0.05 lbs) make it suitable for tight engine compartments where space is at a premium. Always verify hose and port compatibility before installation to ensure a proper seal.