![Red -4 to 7/16 20UNF Straight [AN Male to Male Union Adapter] Oil/Fuel AN Fitting HTST-3F-400-BLK A regulator keeps a certain](https://cdn.shopify.com/s/files/1/1267/2379/products/XUR-FT-4904-001-RD_7ca761f1-aada-45e3-87d4-5fb9aa67712f.jpg?v=1575934042)
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A regulator keeps a certain amount of fuel pressure in the rail and then sends the rest back to the tank
OD: 1-7/8" (48mm)
6" Long High Temp 4-ply Reinforced Black Silicone Hump Coupler Hose meet and exceed SAEJ20 industry standards
Fits Mazda 89-92 RX7 FC3S 1
Technical Specification: SAE # 16
Red -4 to 7/16 20UNF Straight [AN Male to Male Union Adapter] Oil/Fuel AN Fitting HTST-3F-400-BLK A regulator keeps a certainThe AN thread is a type of fitting that is used to connect flexible hoses and rigid metal tubing that supplies fluid. It gained popularity in professional racing due to the ease with which new lines could be easily customized. Its use spread to the aftermarket automotive performance field due to its ease of adaptability, upgradability, and durability.
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