aFe Silver Bullet Throttle Body Spacer Kit, Part Number 46-31001, for Select BMW V8 Models

Silver Bullet throttle body spacers create turbulence in the air flow at the point just prior entry into the engine increasing horsepower, torque and improving throttle response and fuel efficiency. Silver Bullet throttle body spacers are constructed out of durable T-6061 billet aluminum and using a unique serrated/helix entry to create turbulence at the manifold while eliminating the annoying whistle found in other helix only throttle spacers. Silver Bullet Throttle Body Spacer Kit BMW X5 (E53) 04-06 V8-4.4/4.6L M62/N62

• Precision Machined From T-6061 Billet Aluminum
• Produces Increased HP/Torque/Throttle Response
• Increased Air Volume For Better Performance
• 2 Year Limited Warranty
• Special Helix Design
• No Annoying Whistle
• Fits w/aFe Intakes

The aFe Silver Bullet Throttle Body Spacer Kit is designed to improve airflow into the engine for enhanced throttle response and performance. Part Number 46-31001 uses a serrated helix entry to create controlled turbulence at the intake manifold, helping increase air volume and promote more efficient air and fuel mixing. The design also eliminates the annoying whistle commonly associated with helix-only throttle body spacers.

Precision machined from durable T-6061 billet aluminum, this aFe throttle body spacer is engineered for reliable performance and long-term use. It is compatible with aFe intake systems and is designed for select BMW applications equipped with the N62 V8 engine. Installation hardware and components are tailored for the listed vehicle applications, making this kit a practical upgrade for drivers seeking improved throttle response, horsepower, torque, and fuel efficiency.

Key Product Specifications & Technical Data

• Brand: aFe
• Product Line: Silver Bullet
• Part Number: 46-31001
• Product Type: Throttle body spacer kit
• Material: T-6061 billet aluminum
• Design: Serrated and helix entry
• Warranty: 2-year limited warranty
• Emissions Status: EPA compliant; CARB Executive Order D-550-11

What's Included in the Box

• Silver Bullet throttle body spacer
• Application-specific installation components
• Installation instructions, when supplied by the manufacturer

Fitment

Designed for select BMW vehicles with the N62 V8 engine, including BMW X5 (E53) models from 2004 through 2006 with 4.4L and 4.6L engines, as well as select 5 Series, 6 Series, and other applications. Verify engine type, model year, and intake configuration before ordering. Fitment data includes select BMW 540i, 528i, 535i, 550i, and related applications.

Features:

• Precision machined from durable T-6061 billet aluminum for dependable service.
• Serrated helix design increases airflow turbulence at the intake manifold.
• Improves throttle response while supporting increased horsepower and torque.
• Helps increase air volume for improved engine performance and fuel efficiency.
• Special design eliminates the annoying whistle found with helix-only spacers.
• Compatible with aFe intake systems.
• Backed by a 2-year limited warranty.
• Designed for select BMW N62 V8 applications.

Fitments:
1997 BMW 540i Base
1998 BMW 540i Base
1999 BMW 540i Base
2000 BMW 540i Base
2000 BMW X5 4.4i
2001 BMW 540i Base
2001 BMW X5 4.4i
2002 BMW 540i Base
2002 BMW 745i Base
2002 BMW 745Li Base
2002 BMW X5 4.4i
2002 BMW X5 4.6is
2003 BMW 540i Base
2003 BMW 745i Base
2003 BMW 745Li Base
2003 BMW X5 4.4i
2003 BMW X5 4.6is
2004 BMW 545i Base
2004 BMW 645Ci Base
2004 BMW 745i Base
2004 BMW 745Li Base
2004 BMW X5 4.4i
2004 BMW X5 4.8is
2005 BMW 545i Base
2005 BMW 645Ci Base
2005 BMW 745i Base
2005 BMW 745Li Base
2005 BMW X5 4.4i
2005 BMW X5 4.8is
2006 BMW 550i Base
2006 BMW 650i Base
2006 BMW X5 4.4i
2006 BMW X5 4.8is
2007 BMW 550i Base
2007 BMW 650i Base
2008 BMW 550i Base
2008 BMW 650i Base
2009 BMW 528i Base
2009 BMW 528i xDrive Base
2009 BMW 535i Base
2009 BMW 535i xDrive Base
2009 BMW 550i Base
2009 BMW 650i Base

Air Freight Prohibited: false
Not Carb Approved: false
Carb Eo Number: D-550-11
Ltl Freight Required: false
Prop 65: Y
Part Type: automotive
Epa: Compliant
Carb Acknowledgement Required: false
Regular Stock: t
Units Per Sku: 1