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Tillotson .825 Throttle Shutter Notched
14A-34 Tillotson .825” Throttle Shutter Notched
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Tillotson .825 Throttle Shutter Notched

Part Number: 14A-34
Online Price: $2.99
14A-34 Tillotson Notched Brass Throttle Shutter – .825" Bore
Availability: In Stock.

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Description

14A-34 Tillotson .825" Notched Throttle Shutter


The 14A-34 Tillotson Throttle Shutter is a precision-machined OEM brass throttle plate designed for Tillotson carburetors with a .825" bore. This version features a notched edge that allows controlled airflow when the shutter is closed — enabling smoother, more consistent idle performance in racing and high-performance engine setups.


Tillotson, the original inventor of the diaphragm carburetor in the 1950s, developed a wide range of carb sizes for countless applications. EC Carburetors carries the largest inventory of genuine Tillotson throttle shutters in the U.S., making it easy to find the exact match for your engine.


Key Features:

  • Fits Tillotson carburetors with a .825” bore
  • Notched design allows idle airflow when throttle is closed
  • Made from high-quality brass for durability and smooth operation
  • OEM-style throttle shutter – designed for racing and performance engines
  • Trusted by professionals for karting and small engine tuning


Compatible Carburetors:

  • HL-166B
  • HL-166C
  • HL-132A, B, C, E
  • HL-292G
  • HL-352A
  • HL-357A, B
  • HL-366A
  • HL-371A
    And other Tillotson models with a .825” bore.


Replace your worn or damaged throttle shutter with the 14A-34 notched version for improved idle quality and consistent throttle control.

FAQ

Q1: What is the purpose of the notch in this throttle shutter?

A: The notch allows a small amount of air to pass through the carburetor even when the throttle is closed, which enables consistent engine idling—especially useful in racing and performance engines that don’t use idle circuits.


Q2: What carburetors is the 14A-34 shutter compatible with?

A: It fits Tillotson carburetors with a .825" bore, including:

  • HL-166B & HL-166C
  • HL-132A, B, C, E
  • HL-292G
  • HL-352A
  • HL-357A & B
  • HL-366A
  • HL-371A

Always verify your carburetor’s bore size before ordering.


Q3: Is this an original Tillotson part?

A: Yes, the 14A-34 is a genuine OEM-style Tillotson brass throttle shutter, manufactured to original specifications for precise fitment and performance.


Q4: Can this throttle shutter be used for both gas and methanol engines?

A: Yes, the high-quality brass material makes it suitable for both gasoline and methanol applications when used in compatible HR-series carburetors.


Q5: Why buy from EC Carburetors?

A: EC Carburetors carries the largest inventory of Tillotson throttle shutters in the U.S., ensuring you get expert support, correct fitment, and the right part for your build.

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