aFe Silver Bullet Throttle Body Spacer Kit, Black, Part Number 46-38012B, for 2019-2021 Toyota Corolla 2.0L and Lexus UX200

The serrated/helix design creates air turbulence in the intake manifold. This turbulence increases the air pressure in the combustion chamber, resulting in increased performance and improved throttle response. The serrated/helix combination design also reduces intake whistle that occurs with helix-only designs (US PAT 07055513). This Silver Bullet throttle body spacer is precision machined from 6061-T6 billet aluminum for lightweight, high strength, and perfect fit and finish. It features a black anodized finish. This Silver Bullet throttle body spacer uses all factory mounting locations, making for a hassle-free installation. A supplied gasket provides a perfect seal. Silver Bullet Throttle Body Spacer Kit Black Toyota Corolla 19-26 L4-2.0L

• Silver Bullet throttle body spacers create turbulence in the air flow at the point just before entry to the engine – increasing performance, as well as improving throttle response and fuel efficiency.
• Unique Serrated/Helix Entry Design Creates Turbulence and Reduces Whistle Sound
• Increases Air Speed, Improving Performance and Throttle Response
• CNC-Machined from Durable 6061-T6 Billet Aluminum
• Dyno-Proven Gains up to +3 HP & +3 Lbs. x Ft. TQ
• Black Anodized Finish for a Stealthy Look

Improve intake airflow and throttle response with the aFe Silver Bullet Throttle Body Spacer, Part Number 46-38012B. Designed for select 2019-2021 Toyota Corolla and 2019-2020 Lexus UX200 models equipped with the 2.0L four-cylinder engine, this spacer uses a serrated and helix entry design to create controlled air turbulence immediately before the throttle body. The increased air velocity can help improve engine response, performance, and fuel efficiency.

Unlike helix-only designs, the serrated/helix combination helps reduce intake whistle while maintaining airflow-enhancing turbulence. Dyno testing has shown potential gains of up to 3 horsepower and 3 lb.-ft. of torque, depending on vehicle configuration and operating conditions. The spacer is CNC-machined from lightweight, high-strength 6061-T6 billet aluminum and finished with a durable black anodized coating for a clean, stealth-oriented appearance.

The aFe Silver Bullet Throttle Body Spacer uses factory mounting locations for a straightforward installation without permanent vehicle modifications. A supplied gasket helps provide a reliable seal between the spacer and intake components. This product is intended for off-road or competition use where applicable and may not be emissions legal in all jurisdictions. Verify local regulations and vehicle compatibility before installation.

Key Product Specifications and Technical Data

• Brand: aFe
• Product Line: Silver Bullet
• Part Number: 46-38012B
• Product Type: Throttle body spacer
• Material: 6061-T6 billet aluminum
• Finish: Black anodized
• Design: Serrated/helix airflow entry
• Installation: Factory mounting locations with supplied gasket

What's Included

One aFe Silver Bullet throttle body spacer, supplied gasket, and installation components required for the application.

Fitment: 2019-2021 Toyota Corolla with the 2.0L four-cylinder engine; 2019-2020 Lexus UX200 with the 2.0L four-cylinder engine. Confirm engine configuration and application details before ordering.

Features:

• Serrated/helix entry design creates controlled intake turbulence to increase air speed and improve throttle response.
• Combination airflow design helps reduce intake whistle commonly associated with helix-only throttle body spacers.
• CNC-machined from durable 6061-T6 billet aluminum for high strength, light weight, and precise fitment.
• Black anodized finish provides corrosion resistance and a clean, understated appearance.

Fitments:
2019 Lexus UX200 Base
2019 Lexus UX200 F Sport
2019 Lexus UX200 Luxury
2019 Toyota Corolla SE
2019 Toyota Corolla XSE
2020 Lexus UX200 Base
2020 Lexus UX200 F Sport
2020 Lexus UX200 Luxury
2020 Toyota Corolla SE
2020 Toyota Corolla SE Nightshade
2020 Toyota Corolla XSE
2021 Lexus UX200 Base
2021 Lexus UX200 F Sport
2021 Lexus UX200 Luxury
2021 Toyota Corolla SE
2021 Toyota Corolla SE Apex
2021 Toyota Corolla SE Nightshade
2021 Toyota Corolla XSE
2021 Toyota Corolla XSE Apex
2022 Lexus UX200 Base
2022 Lexus UX200 F Sport
2022 Lexus UX200 Luxury
2022 Toyota Corolla SE
2022 Toyota Corolla SE Apex
2022 Toyota Corolla SE Nightshade
2022 Toyota Corolla XSE
2022 Toyota Corolla XSE Apex
2023 Toyota Corolla LE
2023 Toyota Corolla SE
2023 Toyota Corolla XSE
2024 Toyota Corolla LE
2024 Toyota Corolla Nightshade
2024 Toyota Corolla SE
2024 Toyota Corolla XSE
2025 Toyota Corolla FX
2025 Toyota Corolla LE
2025 Toyota Corolla Nightshade
2025 Toyota Corolla SE
2025 Toyota Corolla XSE
2026 Toyota Corolla FX
2026 Toyota Corolla LE
2026 Toyota Corolla SE
2026 Toyota Corolla XSE

Air Freight Prohibited: false
Not Carb Approved: true
Carb Acknowledgement Required: true
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: N/A
Regular Stock: t
Units Per Sku: 1