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aFe Silver Bullet Throttle Body Spacer 12-15 BMW 328i (F30) L4-2.0L N20/N26 aFe AFE46-31009
aFe Silver Bullet Throttle Body Spacer 12-15 BMW 328i (F30) L4-2.0L N20/N26 aFe AFE46-31009
aFe Silver Bullet Throttle Body Spacer 12-15 BMW 328i (F30) L4-2.0L N20/N26 aFe AFE46-31009
aFe Silver Bullet Throttle Body Spacer 12-15 BMW 328i (F30) L4-2.0L N20/N26 aFe AFE46-31009
aFe Silver Bullet Throttle Body Spacer 12-15 BMW 328i (F30) L4-2.0L N20/N26 aFe AFE46-31009
aFe Silver Bullet Throttle Body Spacer 12-15 BMW 328i (F30) L4-2.0L N20/N26 aFe AFE46-31009
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aFe BMW N20 / N26 2.0L Silver Bullet Throttle Body Spacer

$ 173.75 $ 139.00
$ 139.00

Silver Bullet spacer for exact engine and intake requirements

The aFe 46-31009 is a serrated/helix-entry 6061-T 6 aluminum spacer for the exact N20/N26 turbo 2.0L BMW applications below. Its supplied hardware includes two cable ties to keep wiring away from the intake tube. The current exact manual does not state a numerical torque.

Key Features

  • 6061-T6 billet-aluminum serrated/helix entry design; claimed turbulence and reduced whistle do not guarantee an improvement on every setup.
  • The gasket goes between spacer and intake manifold. AIR IN faces the throttle body and the silver sticker faces upward in the exact manual.
  • Release and reinstall the intake tube’s metal retaining ring. Keep the nearby wires clear of the intake tube, using the supplied cable ties when needed.
  • No numerical torque is published in the linked exact manual; confirm the correct requirement rather than borrowing the N54/N52 figure.
  • Current advertised gains up to 6 hp and 10 lb-ft are manufacturer test claims, not guaranteed results for every engine or chassis.

Fitment

Years / source scope Model Exact requirements
2014–2016 220i / 228i F22/F23; 228i xDrive 2015–2016 N20/N26; exact current family support and retailer named-model detail
2012–2016 family / 2012–2015 manual 328i/xi F30/F31/F34; carried GT xDrive N20/N26; current headline/retailer extends beyond older manual header
2014–2016 428i/xi F32/F33/F36 and carried Gran Coupe rows N20/N26; exact named year/body arrangement
2013–2018 retailer / current manufacturer family ends 2016 320i / 320i xDrive Existing later rows source-qualified; retailer also prints B48 for some later cars, not manufacturer N20/N26 proof

46-31009: The current manufacturer page names220i/228i/ 320i/328i/428i families, while the older manual explicitly lists228xi/i,328xi/i and428xi/i with narrower years. Exact current BMP/ModBargains tables corroborate the carried320i through 2018 and328i through 2016 but also label some later320i entries B48. Those existing rows remain a disclosed manufacturer/retailer engine-scope conflict; no blanket B48 support is claimed. Missing220i 2014–2016,228i xDrive 2015–2016 and428i xDrive 2014–2016 rows are restored from exact sources. Do not confuse228i xDrive with a later228i xDrive Gran Coupe.

Specifications

Detail Value
Manufacturer Part Number 46-31009
Material / design 6061-T6 billet aluminum; serrated/helix entry
Engine / application See exact engine-specific fitment table and source qualifications
Sealing arrangement One supplied gasket at manifold/spacer interface; AIR IN toward throttle body and sticker upward.
Throttle-body fastening No numerical value in exact linked manual; confirm actual application/revision requirement.
Emissions scope The current exact page cites D-550-11 / D-550-17 for some or all applications. Exact exemption scope is not fully certified here; match the actual engine/year and required EO label rather than asserting blanket 50-state coverage.

What's Included

  • One Silver Bullet spacer and one gasket.
  • Four M 6 x 70 mm bolts and two cable ties, per exact manual.
  • The exact list does not separately list flat/lock washers, a filter, coupling or replacement throttle body. Do not inherit them from a different BMW kit.

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

Frequently Asked Questions

What is the 46-31009?

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?

One supplied gasket at manifold/spacer interface; AIR IN toward throttle body and sticker upward.

What is the correct torque?

No numerical value in exact linked manual; confirm actual application/revision requirement.

Are all original search rows certified?

The current manufacturer page names220i/228i/ 320i/328i/428i families, while the older manual explicitly lists228xi/i,328xi/i and428xi/i with narrower years. Exact current BMP/ModBargains tables corroborate the carried320i through 2018 and328i through 2016 but also label some later320i entries B48. Those existing rows remain a disclosed manufacturer/retailer engine-scope conflict; no blanket B48 support is claimed. Missing220i 2014–2016,228i xDrive 2015–2016 and428i xDrive 2014–2016 rows are restored from exact sources. Do not confuse228i xDrive with a later228i xDrive Gran Coupe.

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?

The current exact page cites D-550-11 / D-550-17 for some or all applications. Exact exemption scope is not fully certified here; match the actual engine/year and required EO label rather than asserting blanket 50-state coverage.

Installation Instructions

  1. Read the exact manufacturer instructions for 46-31009, verify the actual engine, intake, hardware and applicable emissions scope before removal.
  2. Release the metal ring at the intake-tube/throttle-body connection and disconnect the tube. Remove the four throttle-body screws as directed.
  3. Fit the supplied gasket between manifold and spacer, with AIR IN toward the throttle body and the silver sticker facing up. Secure using the supplied 70 mm screws and the confirmed exact-application requirement; no numerical torque is printed in this manual.
  4. Restore the intake tube and retaining ring. Route wires so they do not contact the tube, securing them with the supplied cable ties when necessary.
  5. Verify connections and applicable EO identification, and recheck bolts and clamps after 100 miles.

46-31009: 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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