HFP-FSYS4 is a streamlined, high-performance fuel line kit for LS and LT engine swaps in 1973–1991 Chevrolet and GMC square body trucks. Designed to support modern fuel injection systems, HFP-FSYS4 includes premium Phenix AN fuel hoses, Quantum billet fittings, and a combined fuel filter/regulator calibrated to 58 PSI—ideal for LS and LT engines.
This kit simplifies your fuel system upgrade without overcomplicating your build. Perfect for budget-conscious or DIY installers, HFP-FSYS4 delivers everything needed to ensure proper fuel pressure and flow, without the added components of a full system like HFP-FSYS5. It’s an ideal match for any pump offered with Quantum’s square body AN fuel pump hangers.
Compatible with all 1973–1991 GM square body pickup submodels, including:
C10, C20, C30, K10, K20, K30,
R10, R1500, R20, R2500, R30, R3500,
V10, V20, V30, V3500
Pair with the QFS-H880 fuel pump hanger for a complete and dependable fuel delivery system tailored to your LS swap project.
Package Includes:
- (1) 64 in. Black Nylon Double Braided Stainless E85 Hose w/ -06 Straight Fittings
- (2) 24 in. Black Nylon Double Braided Stainless E85 Hose w/ -06 Straight Fitting & -06 45° Fitting
- (1) 58 psi Fuel Pressure Regulator/Filter w/ (1) 5/16 fitting & (2) 3/8 fitting
- (1) Fuel Rail Fitting
PLEASE NOTE:
- Not suitable for 1990s era LT1.
- Not recommended for dual pump setups.
- Not suitable for turbo or supercharged applications, which require vacuum reference.
WARNING
This product can expose you to chemicals which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
- Brand Name:
- Quantum
