EFI Hi-Flow Fuel Rail Kit

The Holley EFI 534-209 Hi-Flow Fuel Rails are engineered to enhance the fuel delivery system of LS1, LS2, LS3, LS6, and L99 engines utilizing factory intake manifolds. These rails feature a large inner diameter bore, which is crucial for minimizing fuel pressure drop, especially in high-performance applications. Capable of supporting engines up to 1,100+ horsepower, they are constructed from machined aluminum with a durable black anodized finish, providing both performance and aesthetics. The kit comes complete with four -6 to 3/4"-16 O-ring fittings, along with the necessary fuel rail mounting brackets and hardware for a direct bolt-on installation onto OE-style intake manifolds. The black anodized finish is complemented by a laser-etched EFI logo, ensuring long-lasting good looks in the engine bay. The 5/8” diameter fuel passage further contributes to their high-flow capabilities, making them a suitable upgrade for enthusiasts looking to maximize their engine's performance potential.