4an HS79/ProPlus Crimp Collar - Black

The 4AN HS79/ProPlus Crimp Collar in Black is a precision hose fitting component designed for high-performance fuel and fluid delivery systems in modified vehicles. Whether you're building a custom fuel system for a turbo setup, installing a braided stainless steel line kit, or upgrading your cooling or brake lines, this crimp collar ensures a leak-free, vibration-resistant connection that holds under demanding conditions. Mechanics and engine builders rely on XRP-XTREME RACING PRODUCTS components to maintain system integrity in race cars, street performance builds, and daily-driven modifications where reliability is non-negotiable.

The 4AN sizing indicates this collar is engineered for -4 AN hose (1/4-inch inner diameter), one of the most common fuel and fluid line sizes in automotive applications. The HS79/ProPlus designation identifies this as an advanced crimp collar design that seats firmly onto pre-flared hose ends, creating a mechanically robust joint that resists thermal cycling, pressure surges, and vibration. The black finish provides corrosion resistance and clean aesthetics while the compact form factor—weighing just 0.03 lbs—adds negligible mass to your fuel or cooling system assembly. This collar works in conjunction with matching AN fittings and requires a proper crimping tool for installation, ensuring the connection stays secure through sustained operating pressures up to system design limits.

Performance-focused mechanics, fabricators, and DIY builders choose the 4AN HS79/ProPlus Crimp Collar for fuel system upgrades, turbocharger feed and return lines, nitrous plumbing, and auxiliary cooling circuits. The -4 AN standard is ideal for moderate-flow fuel delivery on four and six-cylinder engines and as a return or auxiliary line on larger displacement builds. Installation requires a dedicated AN hose crimper and matching -4 AN fittings; ensure your hose has been properly flared before assembly and apply the collar with firm, even pressure until fully seated. This component is compatible with all reputable AN hose brands and pairs seamlessly with braided stainless, rubber, or PTFE-lined hoses in both street and race applications.