Holley EFI 300-301 HI-RAM Cast Side Mount Plenum Top Intake Manifolds - 105MM

The Holley EFI Hi-Ram 105mm Cast Side Mount Plenum Top is an innovative intake manifold component designed for serious performance builds, particularly boosted applications. This cast aluminum plenum top mounts directly to existing Hi-Ram manifold bases and features a side-mounted throttle body configuration that maximizes hood clearance and provides excellent airflow characteristics.

Key Features:

• 105mm throttle body opening for maximum airflow capacity
• Durable cast aluminum construction for strength and heat dissipation
• Side-mount throttle body design allows additional clearance for supercharger and turbo setups
• Direct bolt-on fitment to Holley Hi-Ram manifold bases
• Compatible with Ford 5.0 Coyote-style throttle bodies
• Verified fitment under Cervini's 2.5-inch cowl hood on 1979-1993 Mustangs with 351W and 302W Hi-Ram bases when using stock engine mount locations

This plenum top is ideal for builders looking to maximize boost potential and airflow while maintaining a clean engine bay appearance. The side-mount configuration provides exceptional flexibility for routing intake piping and designing custom forced induction systems on Fox-body Mustangs and other compatible platforms.