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Tillotson High Volume (Double Stack, Alky) Inlet Valve Body
67-38 Tillotson Inlet Valve Body - Top
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Tillotson High Volume (Double Stack, Alky) Inlet Valve Body

Part Number: 67-38
Online Price: $16.99
67-38 Tillotson High Volume (Double Stack / Alky) Inlet Valve Body Plate
Availability: In Stock.

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Description

67-38 Tillotson High Volume Inlet Valve Body Plate – Double Stack (Alky) Pump Plate | OEM


The Tillotson 67-38 High Volume Inlet Valve Body Plate—also known as the Double Stack or Alky Stack top plate—is a critical component of Tillotson’s high-performance fuel pump system. This OEM top plate is used exclusively in high-volume (double stack) carburetor configurations, allowing for increased fuel flow to support alcohol (alky) or other high-demand fuel applications.


This is the upper plate in the double-stack fuel pump system, where the fuel inlet cap attaches and where fuel is first routed into the carburetor’s fuel pump. It plays a key role in maximizing fuel delivery efficiency for racing or high-performance small engine setups.


Important: This plate is not compatible with standard volume (single stack/gas stack) inlet systems. It is specifically designed for high-volume configurations only.


Key Features:

  • OEM Tillotson part for high-volume (double stack/alky) applications
  • Connects directly to the fuel inlet cap
  • Supports higher fuel flow for racing or alcohol-fueled engines
  • Essential for proper function of double-stack fuel pump assemblies
  • Durable, precision-machined construction


Fits the Following High-Volume (Double Stack / Alky) Tillotson Carburetors:

  • HL-304WX
  • HL-314G
  • HL-339A
  • HL-348A, HL-348B, HL-348C, HL-348D, HL-348E, HL-348F
  • HL-355A, HL-355B, HL-355C, HL-355D, HL-355E
  • HL-360B, HL-360C
  • HL-363C
  • HL-380A, HL-380B


OEM Part Number: 67-38

Also Known As:

  • Double Stack Inlet Plate
  • Alky Stack Inlet Valve Body
  • High-Volume Pump Plate


Usage Note:

Only use this plate with Tillotson high-volume double-stack fuel pump setups. Installing it on a standard single-stack system will result in incorrect fuel flow and may damage your carburetor.


FAQ

What is the 67-38 Tillotson Inlet Valve Body Plate used for?

The 67-38 is the top plate of a Tillotson double stack (alky) high-volume fuel pump assembly. It connects the fuel inlet cap and directs fuel into the pump, allowing for greater fuel delivery compared to standard single stack systems.


What’s the difference between single stack and double stack inlet plates?

A single stack (gas stack) is for standard fuel delivery. The double stack (alky stack), like the 67-38, is designed to deliver higher fuel volume, typically for racing engines or alcohol (alky) fuels. The two are not interchangeable.


Which carburetor models use the 67-38 inlet plate?

This part fits Tillotson high-volume models, including:

  • HL-304WX
  • HL-314G
  • HL-339A
  • HL-348A through HL-348F
  • HL-355A through HL-355E
  • HL-360B, HL-360C
  • HL-363C
  • HL-380A, HL-380B


Can I use this part on a standard Tillotson carburetor?

No. The 67-38 is specifically made for high-volume double stack pumps. It will not work with standard single stack (gas stack) carburetor setups.


Is this part OEM?

Yes, the 67-38 is a genuine OEM Tillotson part, ensuring proper fit and performance in high-demand fuel systems.

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