The aFe 46-31011 is a black-anodized serrated/helix-entry 6061-T 6 aluminum spacer for the exact listed naturally aspirated 3.0L BMW applications. Its current manufacturer page identifies N52/N53 and explicitly states that it is not CARB exempt; a different BMW spacer’s EO does not apply.
| Years / source scope | Model | Exact requirements |
|---|---|---|
| 2008–2013 | BMW 128i | 3.0L exact manual range |
| 2006 | BMW 325i/xi and 330i/xi | 3.0L exact manual ranges |
| 2007–2013 | BMW 328i/xi E9X family | 3.0L; actual E-series engine/body arrangement, not later F30 N20 by name alone |
46-31011: The exact manual supplies these named model/year ranges and the current page names N52/N53. Existing named-model search rows are retained with Base pseudo-trims normalized. No new N51 or other engine code is inferred, and broad328i year labels do not approve a later-generation turbo four-cylinder. The current black-finish page was located through manufacturer search after the non-black guessed path returned404.
| Detail | Value |
|---|---|
| Manufacturer Part Number | 46-31011 |
| Material / design | 6061-T6 billet aluminum; serrated/helix entry |
| Engine / application | See exact engine-specific fitment table and source qualifications |
| Sealing arrangement | Retain original throttle-body O-ring; one supplied gasket at manifold side. |
| Throttle-body fastening | Exact manual:7.5 ft-lb(10 Nm) with supplied M 6 x 70 mm screws. |
| Emissions scope | Current exact manufacturer page states not CARB exempt and unavailable for purchase in California or use on a vehicle registered with California DMV. Existing non-CARB status is retained; no other spacer’s EO is borrowed. |
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?Retain original throttle-body O-ring; one supplied gasket at manifold side.
What is the correct torque?Exact manual:7.5 ft-lb(10 Nm) with supplied M 6 x 70 mm screws.
Are all original search rows certified?The exact manual supplies these named model/year ranges and the current page names N52/N53. Existing named-model search rows are retained with Base pseudo-trims normalized. No new N51 or other engine code is inferred, and broad328i year labels do not approve a later-generation turbo four-cylinder. The current black-finish page was located through manufacturer search after the non-black guessed path returned404.
Can another spacer’s 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?Current exact manufacturer page states not CARB exempt and unavailable for purchase in California or use on a vehicle registered with California DMV. Existing non-CARB status is retained; no other spacer’s EO is borrowed.
46-31011: 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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