SKU: AERFCM2931
UPC: 678146007018
MPN: FCM2931
The #4 To 1/2-20 Inverted Steel Adapter by AEROQUIP is a precision hydraulic fitting designed to connect a #4 SAE port to a 1/2-20 NPT thread. This adapter is particularly useful for those fabricating custom fuel delivery setups or assembling performance hydraulic lines. It is ideal for engine builders and tuners working on high-performance vehicles.
Constructed from steel, this adapter is built to withstand the thermal cycling and pressure spikes common in turbocharged and supercharged applications. The inverted design allows for a more compact installation, reducing the overall footprint in tight engine bays. This feature facilitates cleaner line routing around critical components such as alternators and power steering pumps.
This adapter is perfect for fuel system tuners and fabricators looking to install fuel rails, intercooler circuits, or auxiliary cooling loops. It is compatible with -4 AN hose or hard-line fittings on the SAE side and threads directly into various components on the NPT side. The robust construction ensures reliability under sustained pressures, making it a valuable addition to any performance setup.
WARNING ⚠️ You must be 18 or older to purchase shotgun or rifle ammunition and 21 or older to purchase handgun ammunition and firearms. Please reference our requirements for ammunition orders to "restricted" states HERE. Always make sure you use the correct ammunition for your firearms. Ammo cannot be shipped to a PO Box. Please reference state & local laws before making a firearm or ammunition purchase.