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Billet Intake 28mm Slide Carburetor Adapter for Briggs Animal / LO206 Engines
473INT EC Intake Manifold 28mm Slide/Spigot to Briggs Animal
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Billet Intake 28mm Slide Carburetor Adapter for Briggs Animal / LO206 Engines

Part Number: 473INT
Online Price: $41.99
Billet Intake Manifold Adapter for Briggs Animal & LO206 – TM-28 Mikuni Compatible
Availability: In Stock.

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Description

Billet Intake Carburetor Adapter for Briggs Animal / LO206 Engines – Fits TM-28 Mikuni & 28mm Spigot Carbs


Upgrade your intake system with the 473INT EC Billet Intake Manifold, precision CNC-machined to fit Briggs & Stratton Animal and LO206 racing engines using a TM-28 Mikuni or other 28mm spigot-mount carburetors. This intake adapter is designed for serious kart racers looking to improve throttle response, airflow efficiency, and power across the RPM range.


Note: This intake is not compatible with World Formula heads.


Key Features:

  • Engine Compatibility: Briggs Animal and LO206 Racing Engines
  • Carburetor Compatibility: TM-28 Mikuni & most 28mm spigot-style carburetors
  • Precision CNC-Machined: Designed to match the intake port shape of the LO206 and Animal cylinder heads for a turbulence-free transition
  • Tapered Internal Geometry: Inlet starts at approx. 22.5mm and smoothly transitions to 28mm at the carburetor for optimized airflow
  • Pulse Port Integrated: Precisely located for enhanced fuel pump performance at high RPM


Includes:

  • Billet Intake Manifold (473INT)
  • Pulse Fitting (for fuel pump connection)
  • Mounting Hardware

Intake gasket (Briggs Part #691885) sold separately


Manifold Specifications:

  • Spigot Outer Diameter (OD): 34.5mm (1.358")
  • Spigot Inner Diameter (ID): 27.8mm (1.095")

Fitment Tip: Due to slight variances in different carburetor brands (OEM vs aftermarket), please measure the ID/OD of your carburetor's spigot before installation. Some applications may require slight port matching or sleeving for optimal fit.


Why Choose the EC Billet Intake Adapter?

Unlike generic adapters, this billet intake manifold is engineered with high-velocity airflow and proper tapering in mind, eliminating turbulence and promoting consistent laminar flow—critical for engine response and peak power in high-RPM racing conditions.


FAQ

Will this intake manifold fit my LO206 engine?

Yes, this adapter is designed to fit Briggs & Stratton Animal and LO206 engines. It aligns precisely with the intake port for ideal flow performance.


What carburetors are compatible with this intake?

This intake is specifically designed for TM-28 Mikuni and other 28mm bore spigot-mounted carburetors. Always verify your carb’s spigot diameter (ID/OD) for a proper fit.


Does this work with World Formula heads?

No, this intake manifold is not a direct fit for Briggs World Formula heads.


What’s included in the kit?

  • Billet intake manifold
  • Pulse fitting (for fuel pump hookup)
  • Mounting bolts

Intake gasket (Briggs #691885) is sold separately.


Do I need to modify anything for installation?

Minor adjustments may be needed depending on your carburetor brand. Some aftermarket carbs may require sleeving or port matching for a perfect seal.


Why choose this billet intake over cast aluminum versions?

This billet intake is CNC-machined for exact tolerances, with optimized tapering and pulse port location. It enhances airflow, throttle response, and fuel pump efficiency, making it ideal for competitive kart racing.

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