Return Style Fuel Line and Filter Kit for LS Engine Swaps
When a project demands precise fuel circulation and contaminant capture for an LS engine swap, the Return Style Fuel Line and Filter Kit ensures a stable 58 psi rail pressure while routing excess fuel back to the tank. Built around durable PTFE braided hoses and a billet aluminum filter housing, this assembly resists ethanol corrosion and shields against abrasion in tight engine bays. Each AN fitting and machined port aligns with early LS regulator mounting points to minimize bends and simplify routing. Installation requires no custom fabrication since hose lengths and bracket mounts match factory layout for a clean appearance and fast service.
PTFE Braided Fuel Lines for Enhanced Chemical and Mechanical Durability
The fuel supply and return hoses feature a smooth PTFE core that resists swelling or breakdown when exposed to modern ethanol blends, ensuring stable performance over time. A stainless steel braid surrounds this inner tube to provide tensile strength and protect against abrasion from engine bay heat and contact with brackets or wiring. A protective black jacket adds an extra layer of defense, so hoses maintain their integrity when rubbed against sharp edges or painted surfaces. In rigorous testing, these assemblies held a constant 58 psi under heat soak conditions, preserving injector flow and preventing pressure loss in high demand driving. Their compact flexibility also allows for clean, efficient routing in tight LS installations without the need for custom trimming or extension.
Return Style Routing Maintaining Precise 58 Psi Rail Pressure
This kit's return style design continuously circulates surplus fuel from the rail back to the tank, holding rail pressure at an exact 58 psi under varying engine loads. By routing excess fuel through the regulator port rather than sealing it off, the system minimizes heat buildup inside the rail and sharply reduces the risk of vapor lock in hot conditions. Each hose and fitting aligns with early LS on rail regulator mounting points to avoid unnecessary bends that could impede flow or create pressure spikes. Consistent flow through this open loop also preserves uniform injector spray patterns, which helps maintain fuel atomization and engine efficiency. The result is a stable delivery system that protects internal seals and supports reliable starts even after long idles or back to back dyno pulls.
Billet Aluminum Filter Housing Designed for Fast Service and Solid Protection
Machined from billet aluminum, the filter housing resists corrosion and keeps its seal integrity even under constant contact with heated fuel. Inside lies a high flow media element engineered to trap abrasive contaminants before they reach sensitive injector tips, guarding against premature wear and clogged nozzles. Tool free service makes routine maintenance straightforward: simply hand unscrew the cap, replace the filter element, and reassemble without removing hoses or fittings. Precision AN style ports on the housing mate directly with the included fittings to ensure leak free connections, while the robust construction retains its form under vibration and thermal cycling. This combination of serviceability and protection helps maintain engine health mile after mile.
Corrosion Resistant AN Fittings and Mounting Hardware for Precise LS Alignment
Every fitting and clamp in the kit is crafted from corrosion resistant materials, including black anodized aluminum and stainless steel fasteners designed to stand up to road moisture and fuel exposure. Two piece screw together AN fittings clamp firmly onto the braided hoses without sealant or special tools, guaranteeing a consistent leak free seal every time. A full set of adapter fittings covers feed and return connections at the tank, filter and rail, removing the need for custom adapters or modification. Formed brackets and clamps conform to early LS engine contours, securing lines against vibration and preventing fatigue over thousands of miles. Standard hand tools accomplish the entire installation, delivering a factory style appearance and fitment in any LS swap project.
Engineered to maintain stable rail pressure and deliver dependable service in your LS swap project.