Inline Shut Off Valve 12AN Male Inlet/Outlet

The Inline Shut Off Valve 12AN Male Inlet/Outlet from REDHORSE PERFORMANCE is an essential flow control component for any serious fuel system, coolant loop, or fluid transfer application in custom automotive builds. Whether you're tuning a high-performance engine, installing a secondary cooling circuit, or designing a custom fuel system for forced induction, this inline valve allows you to isolate sections of your system without breaking hard-line connections. Built for vehicles running aftermarket fuel pumps, turbocharged engines, or dual-battery setups, this valve eliminates the need for destructive disconnections during maintenance or troubleshooting.

Engineered with 12AN (size 12 JIC or AN) male ports for both inlet and outlet, this valve integrates seamlessly into existing -12 hose or hard-line systems using standard AN fittings and adapters. The compact design—measuring 4.65 inches in length with minimal footprint—fits tight engine bays and custom chassis builds where space is critical. REDHORSE PERFORMANCE's precision manufacturing ensures leak-free sealing under pressure, while the manual shut-off mechanism provides positive flow control without relying on electrical solenoids or complex electronics that can fail under heat stress or vibration.

This valve is ideal for street machines, race cars, and performance trucks where reliability and serviceability matter most. Use it to isolate fuel rails during engine-out service, gate secondary cooling loops during low-load driving, or protect fuel cells during storage and transport. Compatible with all -12 AN hose assemblies and hard-line systems running gasoline, diesel, coolant, or other fluids common to automotive applications, this component pays for itself the first time you avoid breaking a pressed fitting or spilling fuel across an engine bay. Weighing only 0.465 pounds, it adds negligible weight while delivering rugged functionality for decades of use.