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Airaid Performance Parts
Airaid 400-521
Airaid 400-521 Airaid Throttle Body Spacer 500x343
[click to enlarge]
Airaid 400-521
• Improve horsepower and torque
• Spaces your throttle body out one inch
• Easy, bolt-on installation
• Improves air flow and fuel atomization
• Creates more complete combustion and increased efficiency
• Can be used with any grade of fuel
Retail Price: $127.38
Our Price: $101.90
UPC 642046405212
(2 In Stock)
Free Shipping and Handling for orders over $99!
(US only. Excluding any oversize charges.)
Enter Zip Code to Calculate Estimated Delivery Date
1Estimated Shipping Dates are based on available inventory and the nearest warehouse.
Performance Parts is an Airaid authorized performance retailer
Product Info Related Items
Application: Diesel Truck
Airaid 400-521 Throttle Body Spacer
Fits 2001-2003, Ford Super Duty pick-ups with 7.3L turbo diesel

You can improve the horsepower and low end torque characteristics of your vehicle with this "PowerAid" throttle body spacer from Airaid. It will space the throttle body out one inch and create a vortex as the air passes through it due to its unique helix style bore. This vortex action improves atomization of the fuel which creates more complete combustion resulting in improved drivability and increased fuel efficiency. The "PowerAid" spacer is legal in all 50 states and can be used with any grade of fuel.

AirAid 400-521 PowerAid Throttle body spacer fits:
2001-2003 Super Duty 7.3L DSL
Shipping Weight/Dimensions:
Weight:0.30 lbs
Height:10.00 in.
Length:6.00 in.
Width:1.50 in.
Shipping from warehouses in the U.S. and Canada!
Performance Parts has over 20 warehouses in the U.S. and Canada so you can get your parts duty free! Call for availability.
Airaid 400-122
Airaid 400-122 "QuickFit" Cold Air Intake System
Fits 1999-2003, Ford F-250 and F-350, and 2000-2003 Excursion with 7.3L diesel
(Production Date 12/07/98 and later.)
Airaid 790-550
Air Filter Cleaning Kit.

• Regular use maintains optimum performance and efficiency
• Use every 30,000 to 50,000 miles
• Specially formulated to clean filter media without damage
• Provides an extra line of defense against dust and dirt
- Last Updated: 2016-07-08 17:06:13 -
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