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EC Tecumseh Single 17-25hp Velocity Stack
312VS EC Infinite Radius Velocity Stack
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EC Tecumseh Single 17-25hp Velocity Stack

Part Number: 312VS
Online Price: $29.99
312VS EC Velocity Stack for Tecumseh 17–25HP – CNC Billet
Availability: In Stock.

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Description

312VS EC Velocity Stack for Tecumseh 17–25HP Engines – CNC Billet Aluminum Intake Upgrade


Maximize your engine’s performance with the 312VS EC Velocity Stack, designed to dramatically improve airflow and fuel signal on Tecumseh 17–25HP carburetors. This high-performance velocity stack uses a precision-machined radius to guide air more efficiently into the carb, increasing velocity and overall flow for better throttle response and engine power.


Ideal for racing or performance applications, this velocity stack complements your carburetor’s natural flow path to unlock its full potential. Where legal, velocity stacks outperform standard filter adapters, providing measurable improvements in engine performance.


Crafted from 6061-T6 billet aluminum, the 312VS is built to last and includes all the hardware needed for a clean, secure installation.


Key Features:

  • Improved Air Velocity and Flow: Internal radius design enhances airflow and signal strength to the carburetor
  • CNC Machined from 6061-T6 Aluminum: Aircraft-grade construction for strength, precision, and durability
  • Optimized for Performance: Designed to deliver better throttle response and top-end power
  • Complete Installation Kit: Includes all required hardware for quick, easy setup
  • Legal Use: Recommended where allowed by class rules – check your rule book before ordering


Fitment Details:

  • Engine Compatibility: Fits Tecumseh 17–25HP engines
  • Carburetor Fitment: Designed for Tecumseh carburetors with approx. 2.5" OD x 1.225" ID bolt spacing
  • Mounting Specs: 2.0625" tap with 1/4-20 threads on the backside for secure mounting
  • Filter Fitment: Check your air filter’s specifications to confirm compatibility


Why Choose the EC 312VS Velocity Stack?

If you're looking for legal performance gains in your racing class or simply want to enhance your engine’s breathing capabilities, the 312VS offers a precision-fit, high-flow solution. When allowed by rules, velocity stacks like this one are a clear upgrade over plain filter adapters.

FAQ

1. What does the 312VS EC Velocity Stack do?

It enhances airflow into the carburetor by using a curved radius to increase air velocity and improve fuel signal. This results in better throttle response and top-end performance.


2. What engines and carburetors does it fit?

The 312VS fits Tecumseh 17–25HP engines and carburetors with approx. 2.5" OD x 1.225" ID bolt spacing, using 2.0625" tap and 1/4-20 threaded mounting holes.


3. Is it legal for racing use?

Yes, it is legal in many racing classes that allow velocity stacks. Always check your rulebook before installing.


4. What is it made from?

The 312VS is CNC machined from 6061-T6 billet aluminum, offering superior strength, precision, and long-term reliability.


5. Do I need any extra parts to install it?

No, it comes with all necessary hardware for installation.


6. Why use a velocity stack instead of a filter adapter?

Velocity stacks provide smoother, more efficient airflow, improving engine breathing and performance—especially at higher RPMs. They outperform standard filter adapters where allowed.

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