300-303 EFI Hi-Ram 95 mm Side-Mount Intake Manifold Plenum Top for Ford Style Throttle Body [Cast Finish]

Name: 300-303 EFI Hi-Ram 95 mm Side-Mount Intake Manifold Plenum Top for Ford Style Throttle Body [Cast Finish]
Brand: HOLLEY
SKU: 510-300-303
Price: 449.95 USD
Availability: InStock

^$449⁹⁵

Ships on 09/15/2026

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Ford Throttle Body Bolt Pattern

EFI Hi-Ram Intake Manifold Plenum Top

For Holley Hi-Ram Manifold Base

1986-1995 Ford 5.0L 95 mm Throttle Body Bolt Pattern

Side Mount

Cast Aluminum

Cast Finish

Holley 300-303 EFI Hi-Ram 95 mm Side-Mount Intake Manifold Plenum Top for Ford Style Throttle Body:

Side-mounted throttle bodies give additional room for designing boosted applications
Mounts to existing Hi-Ram manifold bases

Holley 300-303 EFI Hi-Ram 95 mm Side-Mount Intake Manifold Plenum Top Fitment Notes:

Compatible with all newer generation Hi-Ram bases including LS1, LS2, LS6, LS3, L92, LS7, LT1, and FORD 351W and 302W
- Early model Hi-Ram bases with through holes instead of threaded holes on manifold base require alternate hardware, see installation instructions for hardware recommendations
Verified to fit under Cervinis 2.5 in. cowl hood on 1979-1993 Mustangs with 351W or 302W Hi-Ram bases when using motor mounts that are in stock engine location

Emissions Note:

This part is only legal for sale and use on Uncontrolled (Non-Emissions Controlled) Vehicles or on vehicles used solely for the purposes of closed competition racing.

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Give Your Hi-Ram Room for Turbo or Supercharger Piping

Holley Cast Aluminum Side Mount Plenum Tops for EFI Hi-Ram Manifolds make room for designing engines with boost and engine compartments with limited space.

Part TypePlenum Cover

Product LineHolley Cast Aluminum Side Mount Plenum Tops for EFI Hi-Ram Manifolds

BrandHOLLEY

Package Height5.32

Package Width15.35

Package Length19.6

Weight9.0 PG

Part CategoryPerformance Parts

Throttle Body Bore Size (Mm)95

QuantitySold individually

MaterialCast Aluminum

Part FitmentSemi Universal