Speedmaster 1-147-076 Oldsmobile 400 425 455 MID-AIR™ MidRise Aluminum Intake Manifold Satin

The Speedmaster MID-AIR™ MidRise Aluminum Intake Manifold (Part # 1-147-076) is engineered specifically for Oldsmobile 400, 425, and 455 cubic-inch V8 engines. Constructed from aluminum, this manifold delivers a lightweight advantage over cast-iron stock units while the mid-rise plenum design helps optimize airflow and improve throttle response across a broad RPM range. The satin finish provides a clean, understated appearance that complements any engine bay build.

Designed as a direct-fit upgrade for compatible Oldsmobile big-block applications, this intake manifold is an ideal choice for street performance and mild performance builds alike. The MID-AIR™ design strikes a balance between low-end torque and top-end power, making it a versatile solution for enthusiasts looking to extract more performance from their Olds 400, 425, or 455 powerplant. Trust Speedmaster's proven engineering to deliver a quality bolt-on upgrade backed by the America Auto Direct performance parts advantage.