Collection: Fuel Systems - Fuel Pumps, Regulators & AN Fittings

📋 Fuel System Plumbing Guide

→ Download our complete fuel system plumbing guide

Before you build your fuel system, download our comprehensive guide featuring:

✅ Fuel line sizing chart - Correct AN sizes by power output (carb and EFI)
✅ EFI vs carbureted systems - Different requirements explained
✅ Component selection - Pumps, regulators, filters, and braided hose
✅ Step-by-step installation - Professional plumbing techniques
✅ Safety guidelines - Critical fuel system safety procedures
✅ Pressure specifications - Correct fuel pressure for your application
✅ Troubleshooting guide - Fix fuel starvation, leaks, and vapor lock
✅ E85, methanol, and diesel - Special fuel type considerations

→ View the full fuel system plumbing guide here

Complete Fuel System Components - Pumps, Regulators & AN Plumbing

Build a reliable, high-performance fuel system with professional-grade components designed for Australian street machines, race cars, and custom builds. From electric fuel pumps and pressure regulators to braided stainless hose and AN fittings, we stock everything you need for carbureted, EFI, and race fuel systems.

Fuel Delivery Components

Fuel Pumps: Electric in-tank and inline pumps (40-500+ LPH) plus mechanical pumps for carbureted and EFI applications
Fuel Pressure Regulators: Adjustable regulators for carb (4-9 PSI) and EFI (30-70 PSI) systems with return and returnless configurations
Fuel Filters: Inline filters with 10-100 micron elements to protect injectors and carburetors from contamination
Fuel Pressure Gauges: Liquid-filled gauges and digital displays for accurate fuel pressure monitoring
Fuel Rails: Billet aluminium fuel rails for LS, Holden, and Ford EFI conversions

AN Fuel Line & Fittings

Speedflow Braided Hose: PTFE-lined braided stainless steel hose in -4AN to -12AN sizes for fuel, oil, and coolant
Speedflow AN Fittings: Complete range of hose ends, adapters, bulkhead fittings, and specialty fittings
AN Hose Ends: 100, 200, and 400 series reusable hose ends in straight, 30°, 45°, 60°, 90°, 120°, 150°, and 180° configurations
AN Adapters: Male-to-male, female-to-female, reducer, and specialty adapters for custom plumbing
Bulkhead Fittings: Pass-through fittings for fuel lines through firewalls and panels

Fuel Tank Components

Weld Bungs: Male AN and female ORB weld bungs for custom fuel tank fabrication and plumbing
Fuel Tank Senders: Capacitive and resistive fuel level senders for custom tanks
Fuel Caps & Bungs: Vented and non-vented fuel caps with AN fittings
Fuel Cell Fittings: Bulkhead fittings, rollover valves, and vent fittings for racing fuel cells

Fuel System Sizing Guide

Fuel Pump Flow Rate: Calculate required flow at 0.5 LPH per horsepower (naturally aspirated) or 0.6-0.8 LPH per horsepower (forced induction). Example: 400hp NA engine needs 200 LPH minimum pump capacity. Add 25% safety margin for pump longevity.

Fuel Line Size: -6AN supports up to 450hp (carb) or 400hp (EFI). -8AN supports up to 900hp (carb) or 650hp (EFI). -10AN supports 1200hp+ applications. Larger lines reduce pressure drop and prevent fuel starvation.

Fuel Pressure: Carbureted systems require 4-9 PSI (typically 6-7 PSI). EFI systems require 30-45 PSI (port injection) or 43-58 PSI (throttle body injection). E85 requires 10-15% higher pressure than petrol.

Carbureted vs EFI Fuel Systems

Carbureted Systems: Low-pressure (4-9 PSI) with mechanical or low-pressure electric pumps. Return-style regulators maintain constant pressure. Larger fuel lines (-8AN minimum) compensate for low pressure and high volume demand.

EFI Systems: High-pressure (30-70 PSI) requiring electric in-tank or inline pumps. Return or returnless configurations depending on application. Smaller lines (-6AN typical) due to higher pressure and lower volume requirements.

Common Fuel System Applications

V8 engine conversions with carburetors or EFI
Turbo and supercharger fuel system upgrades
Race car fuel cell installations
Custom fuel tank fabrication and plumbing
E85 and flex-fuel conversions
High-horsepower builds requiring upgraded fuel delivery
Fuel system repairs and component replacement

Related Engine Components

Complete your fuel system with complementary components:

Holley Small Parts: Jets, gaskets, and rebuild components for Holley carburetors
Intake Manifolds: Proflow manifolds for LS, Holden, and Ford applications
Oil Systems: Oil pans, pumps, and AN plumbing components
Fabrication Parts: Weld bungs, fittings, and custom fabrication supplies

Fuel System Installation Resources

Fuel System Safety

Critical Safety Requirements: Always use fuel-rated components (PTFE-lined hose, fuel-safe fittings). Never use rubber hose or compression fittings in fuel systems. Install proper fire suppression in race cars. Route fuel lines away from exhaust and heat sources. Use proper clamps and support every 12-18 inches. Test all connections for leaks before starting engine.

E85 Compatibility: E85 requires ethanol-compatible components including PTFE hose, anodized aluminium fittings, and stainless steel hardware. Standard rubber hose and some aluminium fittings will corrode and fail with E85.