aFe 46-37001 for Throttle Body Spacer 08-15 Honda Accord-Civic Si/Acura TSX 2.4L

Vehicle Fitment

• 2008-2012 Honda Accord L4-2.4L
• 2012-2015 Honda Civic Si L4-2.4L
• 2009-2014 Acura TSX L4-2.4L
• 2013-2015 Acura ILX L4-2.4L

Fitment Notes

• Fits K-series 2.4L engines only (K24Z, K24Y variants)
• Does NOT fit V6 models -- see P/N 46-37002 for V6-3.5L Accord
• Slight modification to intake tube required when used with aFe Takeda intake (P/N TM-1018P-X)
• Works with OEM intake system with no modifications
• CARB EO: D-550-11

Features

• Dyno-proven gains up to +10 HP and +8 lb-ft of torque
• Patented serrated/helix combination entry design
• Creates intake turbulence for more complete combustion
• Serrated edge eliminates whistle sound common with helix-only designs
• Increases intake tract volume for improved volumetric efficiency
• CNC-machined from 6061-T6 billet aluminum
• Clear anodized finish
• Uses factory mounting locations for bolt-on installation
• Made in the USA from domestic suppliers

Specifications

• Part Number: 46-37001
• Product Line: Silver Bullet
• Type: Throttle Body Spacer
• Material: 6061-T6 Billet Aluminum
• Finish: Clear Anodized
• Design: Serrated/Helix Combination
• CARB EO: D-550-11
• Country of Origin: USA
• UPC: 802959461198

Included Components

• 1x Silver Bullet throttle body spacer
• Mounting gasket
• Mounting hardware
• Installation instructions

Product Description

The aFe Silver Bullet Throttle Body Spacer (P/N 46-37001) is a bolt-on performance upgrade for 2008-2015 Honda and Acura vehicles equipped with the 2.4L K-series four-cylinder engine. CNC-machined from 6061-T6 billet aluminum, this spacer uses aFe's patented serrated/helix combination entry design to create turbulence in the intake charge just before it enters the engine. This promotes a more complete burn in the combustion chamber, resulting in dyno-proven gains of up to 10 horsepower and 8 lb-ft of torque.

Unlike helix-only throttle body spacers that produce an audible whistle at idle and cruising speeds, the Silver Bullet's serrated edge design eliminates unwanted noise while still generating effective airflow turbulence. The spacer also increases the volume between the throttle body and intake manifold, improving volumetric efficiency and throttle response. Installation is straightforward using factory mounting locations with the included gasket and hardware. Compatible with the stock intake system out of the box, or with aFe's Takeda cold air intake with a slight modification to the intake tube.