QFS Fuel Pressure Regulator/Filter with -6AN Fittings for 1973-1991 Chevy/GMC C10, K10, R10, V10 Squarebody Pickup, LS-Swap EFI Conversion, 58 PSI

Fits 1973–1991 Chevrolet & GMC C/K & R/V Series Trucks Simplify your EFI conversion with the "tried and true" fuel solution for 1973–1991 Chevy and GMC C10-C30, K10-K30, and R/V Series pickups. Whether you are swapping a Gen III/IV LS engine into a classic Squarebody or a later-model crew cab, this filter/regulator is the industry standard for providing the consistent 58psi base pressure these motors require. This unit is a must-have for builders using returnless style fuel rails or those performing the popular TBSS/NNBS Gen IV intake manifold swap. By combining a high-flow inline filter with a fixed internal regulator, you can streamline your plumbing and eliminate the need for a long return line running all the way from the engine bay. Product Features & Benefits: Precision Pressure: Delivers a fixed, non-adjustable 58psi output to satisfy factory LS injector requirements. 2-in-1 Design: Acts as both a 5-micron fuel filter and a pressure regulator in one compact housing. Simplified Routing: Designed to be mounted near the fuel tank; the feed and return lines connect to one side, while a single outlet line runs forward to the fuel rail. Clean Engine Bay: Reduces clutter by moving the regulation away from the motor, perfect for show-quality LS swaps. Vehicle Fitment: This assembly is compatible with the following 1973–1991 GM Full-Size Trucks (including 2WD, 4x4, and Crew Cab models): C-Series (2WD): C10, C20, C30 K-Series (4x4): K10, K20, K30 R-Series (2WD): R10, R20, R30, R1500, R2500, R3500 V-Series (4x4): V10, V20, V30, V2500, V3500

• QFS-F201-AN6 is a high-performance external fuel filter and 58 PSI regulator kit, pre-fitted with -6AN screw-on adapters for seamless integration with custom braided or PTFE fuel lines
• Massive Squarebody Fitment: Precision-engineered for the legendary 1973–1991 Chevrolet and GMC "Squarebody" era, including C10/C20/C30, K10/K20/K30 (4x4), and the later R/V and R1500/V2500 series pickups
• The LS-Swap Industry Standard: The essential "bypass" regulator for LS1, LS2, LS3, and LS-vortec engine conversions; provides the rock-solid 58 PSI (4 bar) fuel pressure required for modern GM EFI
• Simplified EFI Architecture: Ideal for converting classic carbureted or TBI trucks to high-pressure EFI; the integrated bypass regulator simplifies plumbing by allowing a short return line to the tank directly from the filter
• Pro-Level Plumbing: Includes high-quality -6AN adapter fittings, allowing you to bypass restrictive plastic OEM clips and run professional-grade high-pressure fuel lines directly to the filter/regulator
• Get back on the road with confidence – Guaranteed – As a US-based small business, we understand the frustration of downtime and are here to help you get back to your passion. Backed by our lifetime warranty, we stand by our products and our community