aFe Silver Bullet Throttle Body Spacer Kit for 2006-2011 Honda Civic Si 2.0L

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. Its black anodized finish gives a stealthy look. Adding a Silver Bullet Throttle Body spacer lengthens the intake track which helps increase intake air speed, performance and improve throttle response. This Silver Bullet throttle body spacer uses all factory mounting locations, making for a hassle-free installation. A supplied gasket provides a perfect seal. This item will only fit models equipped with the factory intake system. Silver Bullet Throttle Body Spacer Kit Honda Civic Si 06-11 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.
• Serrated-Helix design improves venturi effect and reduces whistle
• Increases Air Speed, Improving Performance and Throttle Response
• Will only fit models equipped with the factory intake system
• CNC-Machined from Durable 6061-T6 Billet Aluminum

Improve intake airflow and throttle response with the aFe Silver Bullet Throttle Body Spacer Kit, part number 46-37006, designed for the 2006-2011 Honda Civic Si equipped with the factory intake system. Its serrated-helix design creates controlled turbulence at the throttle body, helping increase air speed and intake pressure as the air enters the combustion chamber. The result is sharper throttle response, improved engine performance, and potential fuel-efficiency benefits.

The serrated and helix combination is engineered to enhance the venturi effect while reducing the intake whistle commonly associated with helix-only spacer designs. The aFe Silver Bullet spacer is CNC-machined from 6061-T6 billet aluminum for a precise fit, high strength, and lightweight construction. Its black anodized finish provides a clean, understated appearance in the engine bay, while the supplied gasket helps create a reliable seal.

This throttle body spacer uses the vehicle's factory mounting locations for a straightforward installation without requiring modifications to the intake system. It is intended only for Honda Civic Si models retaining the factory intake system and is not CARB approved. Verify vehicle application before ordering.

Key Product Specifications & Technical Data

• Brand: aFe
• Part Number: 46-37006
• Product Type: Throttle body spacer kit
• Application: 2006-2011 Honda Civic Si
• Engine Compatibility: 2.0L inline-four engine
• Material: CNC-machined 6061-T6 billet aluminum
• Finish: Black anodized
• Installation: Factory mounting locations; factory intake system required

What's Included

• aFe Silver Bullet throttle body spacer
• Installation gasket

Fitment: Fits 2006, 2007, 2008, 2009, 2010, and 2011 Honda Civic Si models with the 2.0L engine and factory intake system.

Features:

• Serrated-helix design creates intake airflow turbulence to help increase air speed, performance, and throttle response.
• Combined serrated and helix profile improves the venturi effect while reducing intake whistle compared with helix-only designs.
• CNC-machined from durable 6061-T6 billet aluminum for strength, lightweight construction, and precise fitment.
• Uses factory mounting locations and includes a gasket for a straightforward installation and dependable seal.

Fitments:
2006 Honda Civic Si
2007 Honda Civic Si
2008 Honda Civic Si
2009 Honda Civic Si
2010 Honda Civic Si
2011 Honda Civic Si

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: false
Units Per Sku: 1