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Vibrant 4in HD Clamp to 4.25in Throttle Body Transition Flange - Black Ops Auto Works
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Vibrant 4in HD Clamp to 4.25in Throttle Body Transition Flange

Vibrant
VIB12676
Flanges
1 Units In Stock - Ships Next Business Day
Fabrication, Flanges, Vibrant
$ 55.99 $ 41.50
$ 41.50

SKU: 12676

Vibrant Performance 4in HD Clamp to 4.25in Throttle Body Transition Flange

This CNC-machined aluminum flange adapts a 4-inch heavy-duty clamp intake tube to a 4.25-inch throttle body diameter creating a seamless transition for unrestricted airflow. It suits custom intake systems on turbocharged supercharged or high-flow naturally aspirated engines delivering quicker throttle response and power gains. Perfect for fabrication projects needing precise leak-free connections.

Key Features

  • 6061-T6 Aluminum Construction: Lightweight durable material resists corrosion and withstands high heat pressure in performance applications
  • Precise 4in to 4.25in Transition: Smooth mandrel-bent design eliminates turbulence maintains velocity for optimal air intake efficiency
  • HD Clamp Compatibility: Designed for Vibrant heavy-duty V-band clamps ensuring secure airtight seal under boost
  • CNC Machined Port Matching: Factory-precision ports align perfectly with throttle body gasket reducing leaks and setup time
  • Universal Fabrication Fit: Versatile for custom manifolds plenums or piping in various engine builds

Product Notes

  • Pair with Vibrant 4in HD clamps and silicone couplers for complete assembly
  • Inspect throttle body outer diameter to confirm 4.25in match before purchase
  • Packaged to prevent shipping damage arrives ready for immediate fabrication

Installation Notes

  • Professional installation recommended.
  • Clean all mating surfaces with isopropyl alcohol for maximum seal integrity
  • Use provided gasket or high-temp RTV torque HD clamp to 8-10 ft-lbs

This Part Fits

Year Make Model Submodel
Universal Custom Fabrication Intake Systems
1997-2023 GM LS-Series All (w/4.25in TB)
2004-2023 Ford Modular 4.6/5.4 All (w/4.25in TB)
1986-2023 Universal 4.25in TB Engines Turbo/Supercharged

Why Choose Vibrant Performance?

  • Trusted brand for exhaust intake components used in racing dragstrip builds
  • Manufactured with tight tolerances for reliable performance under extreme conditions
  • Engineered in USA with focus on airflow dynamics and durability

Frequently Asked Questions

  • Q: Does this flange fit 4.25-inch throttle bodies from Holley FAST or Accufab?
    A: Yes it matches 4.25in outer diameter throttle bodies from major brands like Holley Accufab and OEM upgrades with precise port alignment
  • Q: What material and finish does it have?
    A: Made from 6061-T6 aircraft-grade aluminum with natural machined finish for heat dissipation and long-term durability
  • Q: What warranty covers this part and install tips?
    A: Vibrant offers limited lifetime warranty against defects use anti-seize on clamp bolts and check boost levels post-install

Shipping & Handling

  • Method: UPS Ground
  • Availability: In stock - ships same or next business day
  • Packaging: Protective box 6in x 6in x 1in
  • Weight: 0.5 lbs

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