1. Home
  2. Carburetors
  3. Velocity Stack & Filter Adaptors.
  4. Tillotson Velocity Stack & Filter Adaptors
  5. 323FA EC Tillotson HL-166B Air Filter Adaptor
323FA EC Tillotson HL-166B Air Filter Adaptor
323FA EC Billet Filter Adaptor
Write a Review

323FA EC Tillotson HL-166B Air Filter Adaptor

Part Number: 323FA
Online Price: $24.99
323FA EC Air Filter Adapter – Fits Tillotson HL-166B (Comer 2-Cycle)
Availability: In Stock.

Send to:

*We'll ask for shipping info at checkout

Description

323FA EC Air Filter Adapter – Tillotson HL-166B (Comer 2-Cycle)


The 323FA EC Filter Adapter is designed to mount a 2.5" ID air filter to your Tillotson HL-166B carburetor, commonly used on Comer 2-cycle kart racing engines. In racing classes where high-performance velocity stacks are not allowed, this adapter provides a precision-machined alternative for secure, consistent airflow.


Each adapter is CNC-machined from 6061-T6 billet aluminum, ensuring a high-quality fit, durability, and professional finish. All necessary hardware is included for a quick, hassle-free installation.


While velocity stacks offer improved flow in performance setups, this adapter is ideal for applications where rules require a direct air filter connection.

Always verify legality for your class before ordering.


Fitment Details:

  • Fits Tillotson HL-166B carburetor
  • Commonly used on Comer 2-cycle kart engines
  • Approximate sizing: 2.5" OD × 1.055" ID
  • Bolt spacing: 1.375" (fitted for 10-32 hardware)
  • Check your air filter dimensions before installation

FAQ

What carburetor does this adapter fit?

This adapter is designed for the Tillotson HL-166B, which is commonly used on Comer 2-cycle kart racing engines.


What size air filter does it support?

It is designed to accept 2.5" inner diameter (ID) air filters. Always check your filter size before ordering.


Is this allowed in all karting classes?

Not all classes allow air filter adapters or velocity stacks. Check your rulebook to confirm this product is legal in your racing class.


What material is the adapter made from?

Each unit is CNC-machined from 6061-T6 billet aluminum, offering high durability, precision, and a clean professional finish.


Is installation hardware included?

Yes, all necessary mounting hardware is included with the adapter for a secure and straightforward installation.

Related Items

Recently Viewed Items