Dinan High Flow Throttle Body for BMW 325i 525i X3 Z3 Z4

Special Note: Not applicable to 525i (E60) 2006 - 2007.
Product Description

Dinan’s High Flow Throttle Body improves intake air flow for additional horsepower and torque gains.

The internal diameter of the stock throttle body is bored larger for a 9% increase in air flow area. The resulting increase in air flow provides more horsepower and torque throughout the rpm range with noticeably quicker throttle response.

*Dyno results for the combination of Stage 3 Performance Engine Software, High Flow Cold Air Intake, Free Flow Exhaust and Throttle Body.


  • 2001-2006 325i & Ci, xi, Conv., Wagon E46 
  • 2004-2007 525i E60 
  • 2001-2003 525i & Sport Wagon E39 
  • 2004-2006  X3 2.5i E83 
  • 2001-2003 Z3 2.5 E36/7 ROADSTER 
  • 2003-2006Z4 2.5 E85
Product Specifications
Labor Hours/Installation Hours 1.50
Emission Status 50 State Emissions Legal
Max HP Gain 5 hp @ 6500 rpm
Max Torque Gain 4 lb/ft @ 6500 rpm
Included Notes Included Item Details