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Silver Bullet spacer for exact engine and intake requirements
The aFe 46-36001 Silver Bullet spacer fits the listed Nissan/Infiniti 5.6L applications. The current broad QX56 headline and older manual disagree on later years, so the exact engine and hardware version must be checked.
Key Features
- 6061-T6 billet-aluminum serrated/helix entry design; claimed turbulence and reduced whistle do not guarantee an improvement on every setup.
- 6061-T6 billet aluminum with serrated/helix entry.
- The exact page supports OE and aFe cold-air intake systems in its documented applications; this does not approve unrelated intake or engine combinations.
- Manufacturer airflow, throttle-response and power statements are claims, not guaranteed gains.
Fitment
| Years / source scope | Model | Exact requirements |
|---|---|---|
| 2004β2015 | Nissan Titan / Armada | 5.6L V8 |
| 2004 | Nissan Pathfinder Armada | 5.6L V8 |
| 2008β2012 manual | Nissan Pathfinder | 5.6L V8 only; not 4.0L |
| 2004β2010 manual and read EO | Infiniti QX56 | 5.6L V8; later headline scope held |
46-36001: The current page says QX56 2004β2013, but the exact manual and read EO D-550-40 stop at 2010. Existing 2011β2013 portions are withheld as a source conflict, not declared physically incompatible. The same manual lists M56 2011β2013 and QX80 2014 with alternate internal spacer references; those additional applications require hardware-revision confirmation and are not newly mapped. Existing Pathfinder SE coverage remains conditional on the 5.6L engine. Missing engine-qualified trim detail is not replaced with invented engine pseudo-trims.
Specifications
| Detail | Value |
|---|---|
| Manufacturer Part Number | 46-36001 |
| Material / design | 6061-T6 billet aluminum; serrated/helix entry |
| Engine / application | See exact engine-specific fitment table and source qualifications |
| Sealing arrangement | Install the supplied gasket between spacer and throttle body, engraved side facing the throttle body. |
| Throttle-body fastening | The exact manual specifies 10 Nm (89 in-lb) for the supplied throttle-body bolts. |
| Emissions scope | D-550-40 was read from CARB. Its listed applications include QX56 2004β2010 and Pathfinder 2008β2012 5.6L, with Armada coverage beyond the mechanical page's limit. Titan and the manual-only additional Infiniti entries are not established exempt by that table; verify the correct order and labeling. |
What's Included
- One Silver Bullet spacer; the manual lists alternate internal references rather than a multi-spacer bundle
- One gasket
- Four 6mm x 70mm bolts, four 6mm flat washers and four 6mm lock washers
About aFe Power
aFe Power develops application-specific intake, filtration, exhaust, cooling, tuning, suspension, drivetrain, and truck-performance components supported by product testing and documented installation requirements.
Related Parts
- Browse aFe Power by exact engine and installed intake; shared brand membership does not establish compatibility.
- Use the exact spacer, seal and fastener list; do not substitute another spacer from a broad model title.
Frequently Asked Questions
What is the 46-36001?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?Install the supplied gasket between spacer and throttle body, engraved side facing the throttle body.
What is the correct torque?The exact manual specifies 10 Nm (89 in-lb) for the supplied throttle-body bolts.
Are all original search rows certified?The current page says QX56 2004β2013, but the exact manual and read EO D-550-40 stop at 2010. Existing 2011β2013 portions are withheld as a source conflict, not declared physically incompatible. The same manual lists M56 2011β2013 and QX80 2014 with alternate internal spacer references; those additional applications require hardware-revision confirmation and are not newly mapped. Existing Pathfinder SE coverage remains conditional on the 5.6L engine. Missing engine-qualified trim detail is not replaced with invented engine pseudo-trims.
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?D-550-40 was read from CARB. Its listed applications include QX56 2004β2010 and Pathfinder 2008β2012 5.6L, with Armada coverage beyond the mechanical page's limit. Titan and the manual-only additional Infiniti entries are not established exempt by that table; verify the correct order and labeling.
Installation Instructions
- Read the exact manufacturer instructions for 46-36001, verify the actual engine, intake, hardware and applicable emissions scope before removal.
- Remove the engine cover, disconnect the PCV hoses and remove the intake tube from throttle body and airbox. Remove the engine-cover bracket from the manifold.
- Remove the four throttle-body socket-cap bolts with the specified 5mm hex and separate the body from the manifold.
- Install the spacer engraved side toward the body and the supplied gasket on the throttle-body side. Use the supplied longer 6mm x 70mm hardware and washers; tighten to 10 Nm (89 in-lb).
- Restore the inlet tube, PCV hose connections, engine-cover bracket and cover. Verify secure connections and the exact application-specific EO label requirements.
46-36001: installation details and any unresolved source scope must be matched to the actual vehicle before use.
California Proposition 65 Warning
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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