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aFe Silver Bullet Throttle Body Spacer 19-21 Toyota Corolla L4 2.0L - Black aFe AFE46-38012B
aFe Silver Bullet Throttle Body Spacer 19-21 Toyota Corolla L4 2.0L - Black aFe AFE46-38012B
aFe Silver Bullet Throttle Body Spacer 19-21 Toyota Corolla L4 2.0L - Black aFe AFE46-38012B
aFe Silver Bullet Throttle Body Spacer 19-21 Toyota Corolla L4 2.0L - Black aFe AFE46-38012B
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aFe Silver Bullet Black Spacer - Toyota Corolla / Lexus UX200 2.0L

aFe
AFE46-38012B
802959468289
Throttle Body Spacers
10 Units In Stock
$ 173.75 $ 139.00
$ 139.00

Silver Bullet spacer for exact engine and intake requirements

The aFe 46-38012B black Silver Bullet spacer is for the exact 2.0L M20A Toyota Corolla and Lexus UX200 applications documented below. Three mounting bolts and an O-ring seal distinguish this kit from the four-bolt Toyota spacers.

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 black anodized finish and serrated/helix entry.
  • The current exact page supports the factory intake and aFe intake kits in this documented application; it does not approve every unrelated intake or engine.
  • Uses retained manifold and supplied spacer O-rings; leak-free performance remains dependent on correct seal condition and installation.
  • Manufacturer power, response and whistle statements are claims, not guaranteed gains.

Fitment

Years / source scope Model Exact requirements
2019–2026 current page; manual through 2024 Toyota Corolla 2.0L M20A application only; actual body/engine must match
2019–2021 exact manual Lexus UX200 2.0L M20A; not UX250h or other Lexus models

46-38012B: The current Corolla page reaches 2026, but the linked manual ends at 2024 and additionally names UX200 2019–2021. Toyota documents the 2019 Corolla Hatchback's 2.0L M20A engine; a shared SE/XSE label does not certify every sedan, hatchback, hybrid or later configuration. Existing 2019–2021 named Corolla search rows are retained as engine/body-conditional holds, not full fitment passes. Broader later Corolla search mapping remains held pending exact engine/body/trim proof. The exact-manual UX200 application is added without inferring other M20A-powered vehicles.

Specifications

Detail Value
Manufacturer Part Number 46-38012B
Material / design 6061-T6 billet aluminum; serrated/helix entry
Engine / application See exact engine-specific fitment table and source qualifications
Sealing arrangement Fit the supplied -144 O-ring into the spacer groove and retain the original manifold O-ring. No separate flat gasket is listed.
Throttle-body fastening This exact manual does not publish a numeric torque. Obtain the applicable factory/manufacturer tightening requirement; do not borrow a value from a different spacer.
Emissions scope The manufacturer states this product is not CARB exempt and is unavailable for purchase in California or use on vehicles registered with the California DMV.

What's Included

  • One black Silver Bullet spacer
  • One -144 O-ring
  • Three M6 x 40mm bolts
  • Three M6 flat washers and three M6 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

Frequently Asked Questions

What is the 46-38012B?

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?

Fit the supplied -144 O-ring into the spacer groove and retain the original manifold O-ring. No separate flat gasket is listed.

What is the correct torque?

This exact manual does not publish a numeric torque. Obtain the applicable factory/manufacturer tightening requirement; do not borrow a value from a different spacer.

Are all original search rows certified?

The current Corolla page reaches 2026, but the linked manual ends at 2024 and additionally names UX200 2019–2021. Toyota documents the 2019 Corolla Hatchback's 2.0L M20A engine; a shared SE/XSE label does not certify every sedan, hatchback, hybrid or later configuration. Existing 2019–2021 named Corolla search rows are retained as engine/body-conditional holds, not full fitment passes. Broader later Corolla search mapping remains held pending exact engine/body/trim proof. The exact-manual UX200 application is added without inferring other M20A-powered vehicles.

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 manufacturer states this product is not CARB exempt and is unavailable for purchase in California or use on vehicles registered with the California DMV.

Installation Instructions

  1. Read the exact manufacturer instructions for 46-38012B, verify the actual engine, intake, hardware and applicable emissions scope before removal.
  2. Disconnect the two vacuum-switch hoses, its electrical connector and plastic wire guide from the intake tube.
  3. Disconnect the valve-cover hose and MAF electrical connector. Loosen the body clamp, unclip the upper airbox and remove the tube/upper housing assembly.
  4. Remove the three throttle-body screws using the specified 8mm socket. The exact manual says not to disconnect the hoses attached to the throttle body.
  5. Seat the supplied -144 O-ring in the spacer groove and make sure the original manifold O-ring remains in place. Fit the spacer behind the body.
  6. Use the three supplied M6 x 40mm bolts and washers. Confirm the applicable tightening requirement because this manual gives no numeric torque.
  7. Restore the tube and upper airbox, body clamp and airbox clips. Reconnect the MAF plug, valve-cover hose, both vacuum-switch hoses, its electrical connector and wire guide.
  8. Recheck bolts and clamps after 100 miles, following the verified tightening requirement and checking all seals/connections.

46-38012B: 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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