Ford Racing Performance Improvement Intake Manifold – 2001–2004 Mustang GT 4.6L SOHC 2V | M-9424-P46A

Manifold gasket set not included — must be ordered separately. Do not reuse the factory intake manifold gaskets. Ford Racing gasket set M-9439-A46 is the recommended companion part.

4.6L SOHC 2V only — does not fit the 4.6L 4V DOHC (Cobra / Mach 1) or 5.4L engines.

Ford Racing M-9424-P46A performance improvement intake manifold for the 2001–2004 Ford Mustang GT with the 4.6L SOHC Two-Valve Modular V8. Direct bolt-on replacement for the factory composite plastic intake manifold. 12.6 lbs. Ships fast across Canada and the US.

Performance Improvement Over Factory Manifold

The factory 4.6L 2V intake manifold is a composite plastic unit engineered for emissions compliance and broad low-RPM torque delivery across a wide rev range — not for maximum mid-to-upper RPM power output. Ford Racing’s M-9424-P46A features redesigned port geometry and improved plenum volume that increases airflow to the combustion chambers at higher engine speeds. The result is a measurable increase in mid-range and peak power — commonly documented at 15–25 hp on stock or mildly modified 4.6L 2V engines — without requiring supporting modifications beyond the manifold swap itself. As a Ford Racing part, this manifold is engineered specifically for the 4.6L 2V Modular platform and is a factory-engineering-level upgrade rather than an aftermarket approximation.

Direct Bolt-On Installation

The M-9424-P46A is a direct bolt-on replacement using all existing factory mounting hardware, sensor ports, and coolant connections. No cutting, fabricating, or custom fittings required. Compatible with stock throttle bodies and upper intake components — also compatible with aftermarket throttle bodies and cold air intake systems typically used alongside this manifold.

Manifold Gasket Set Required — Order Separately

The intake manifold gasket set is not included with this manifold and must be purchased separately. The factory gaskets must not be reused when removing and reinstalling an intake manifold — compression set and heat cycling permanently deform the sealing surface of the original gaskets, and reuse risks coolant leaks into the intake ports or vacuum leaks that will affect idle quality and engine calibration. Ford Racing gasket set M-9439-A46 is the recommended companion part for this installation.

Fitment

• 2001–2004 Ford Mustang GT — 4.6L SOHC 2V Modular V8
• New Edge / SN95 platform
• SOHC 2V only — does not fit 4.6L 4V DOHC (Cobra / Mach 1) or 5.4L
• Verify fitment for 1999–2000 Mustang GT before ordering

Manifold gasket set required separately — do not reuse factory gaskets. Drain and flush coolant before removal. Torque all manifold bolts to Ford specification in the correct sequence. Professional installation recommended. Tune recommended after installation to maximise power gains and correct air/fuel ratio for the improved airflow.

Specifications

• Brand: Ford Racing (Ford Performance)
• Part Number: M-9424-P46A
• Type: Performance improvement intake manifold
• Compatible Engine: 4.6L SOHC 2V Modular V8
• Fit: Direct bolt-on
• Gaskets: Not included — order M-9439-A46 separately
• Weight: 12.6 lbs
• Application: 2001–2004 Ford Mustang GT