45 Degree Elbow 5in I.D. x 4in Leg Length

The 45 Degree Elbow 5in I.D. x 4in Leg Length is an essential intake and exhaust ducting component for custom automotive builds, turbo installations, and engine bay modifications. This angled elbow fitting redirects airflow or exhaust gases at a 45-degree angle, making it indispensable for tight engine bay layouts where straight pipe runs won't fit. Whether you're fabricating a custom cold-air intake, routing turbo intercooler pipes, or designing a performance exhaust system, this elbow provides a clean, engineered solution that maintains flow efficiency while optimizing space constraints.

Manufactured to precision specifications with a 5-inch inner diameter and 4-inch leg length, this 45-degree elbow is engineered to handle both intake and exhaust applications with consistent internal geometry that minimizes turbulence and flow separation. The 45-degree angle provides an optimal balance between directional change and pressure drop—steep enough for tight routing but gradual enough to avoid excessive restriction. Weighing just 1.37 pounds, the lightweight construction reduces unsprung mass while the compact footprint (13.4 x 5.65 x 16.75 inches) ensures it fits challenging mid-engine bays and tight turbocharger installations. The smooth internal radius design promotes laminar airflow, critical for intercooler piping and cold-air intake systems where velocity and temperature stability matter.

Experienced engine builders and tuners rely on this elbow for custom intake manifold fabrication, turbo-to-intercooler connections, and exhaust routing in heavily modified vehicles. It pairs seamlessly with 5-inch diameter piping and hose clamp assemblies, allowing you to dial in exact flow paths for maximum efficiency gains. Installation is straightforward: secure with stainless steel hose clamps or weld into permanent exhaust systems depending on application. Whether you're upgrading a naturally aspirated engine with a performance intake or configuring a full turbo kit, this 45-degree elbow for sale delivers the precision fitment and flow characteristics that separate professional builds from compromised installations.