The aFe 46-33001 is the specified Ford/Lincoln spacer with alternative mounting bolts for different engines and manifold materials. The later F-150 4.6L application is two-valve only; it is not a 4.6L three-valve spacer.
| Years / source scope | Model | Exact requirements |
|---|---|---|
| 1997β2003 4.6L / 5.4L; 2004β2010 4.6L two-valve | Ford F-150 | Current page explicitly excludes 2004β2010 4.6L three-valve engines |
| 1997β2006 4.6L; 1997β2004 5.4L manual | Ford Expedition | Check engine, manifold and throttle/cable arrangement |
| 1999β2004 F-250 / F-350; 2000β2004 Excursion | Ford Super Duty / Excursion | 5.4L; later Excursion legacy scope withheld against manual / EO |
| 2006β2008 Mark LT; 1998β2001 Navigator | Lincoln applications in exact manual | 5.4L; confirm actual throttle-body installation and applicable EO row |
46-33001: The current F-150 page excludes the 2004β2010 4.6L three-valve engine. Its linked manual also names other Ford/Lincoln installations and several manifold-dependent bolt choices. D-550-43 lists broader 5.4L F-150/Expedition years than the mechanical manual; that EO is not used to approve a later mechanical interchange. Excursion 2005 legacy rows are withheld against the manual/EO ending in 2004. Broad YMM search rows cannot encode valve count or manifold material and remain conditional rather than fully certified.
| Detail | Value |
|---|---|
| Manufacturer Part Number | 46-33001 |
| Material / design | 6061-T6 billet aluminum; serrated/helix entry |
| Engine / application | See exact engine-specific fitment table and source qualifications |
| Sealing arrangement | Two supplied gaskets, one on each side of the spacer; AIR IN faces the throttle body. Remove the original gasket and applicable plastic spacer as instructed. |
| Throttle-body fastening | Correctly selected throttle-body bolts: 10 Nm (89 in-lb). No separate bracket torque is supplied; bolt length depends on actual engine/manifold. |
| Emissions scope | The page links D-550-11, D-550-17 and D-550-43. Inspected D-550-43 includes individual Ford/Lincoln rows but has broader 5.4L years than the mechanical manual and does not independently resolve valve-count/manifold compatibility or every Mark LT application. |
aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.
A model- and engine-specific Silver Bullet throttle-body spacer, not a complete intake or replacement throttle body.
Does it include a filter or coupling?The exact parts list below governs. Generic manufacturer page fields do not establish a supplied intake filter or coupling for this spacer.
Are gains guaranteed?No. Turbulence, throttle-response and whistle statements are manufacturer design claims, not guaranteed horsepower, fuel-economy or sound results for the actual engine.
Which sealing parts are used?Two supplied gaskets, one on each side of the spacer; AIR IN faces the throttle body. Remove the original gasket and applicable plastic spacer as instructed.
What is the correct torque?Correctly selected throttle-body bolts: 10 Nm (89 in-lb). No separate bracket torque is supplied; bolt length depends on actual engine/manifold.
Are all original search rows certified?The current F-150 page excludes the 2004β2010 4.6L three-valve engine. Its linked manual also names other Ford/Lincoln installations and several manifold-dependent bolt choices. D-550-43 lists broader 5.4L F-150/Expedition years than the mechanical manual; that EO is not used to approve a later mechanical interchange. Excursion 2005 legacy rows are withheld against the manual/EO ending in 2004. Broad YMM search rows cannot encode valve count or manifold material and remain conditional rather than fully certified.
Can another spacerβs instructions be substituted?No. Gaskets, O-rings, brackets, screw sizes, control cables and intake restrictions differ by exact part number.
Does the EO reference cover every application?The page links D-550-11, D-550-17 and D-550-43. Inspected D-550-43 includes individual Ford/Lincoln rows but has broader 5.4L years than the mechanical manual and does not independently resolve valve-count/manifold compatibility or every Mark LT application.
46-33001: installation details and any unresolved source scope must be matched to the actual vehicle before use.
California Proposition 65 warning: this product can expose you to chemicals known to the State of California to cause cancer and reproductive harm.
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