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Tillotson 1.125 HL Throttle Shaft
13-2135 Tillotson 1.125 Throttle Shaft
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Tillotson 1.125 HL Throttle Shaft

Part Number: 13-2135
Online Price: $19.99
13-2135 OEM Tillotson Throttle Shaft and Lever Assembly – Fits HL-380A & HL-380B
Availability: In Stock.

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Description

13-2135 OEM Tillotson Throttle Shaft & Lever Assembly – Fits HL-380A & HL-380B Carburetors


The 13-2135 OEM Tillotson Throttle Shaft and Lever Assembly is engineered for precision throttle control in high-performance applications. Designed specifically for the Tillotson HL-380A and HL-380B open-class flathead racing carburetors, this component ensures consistent response and accurate airflow modulation under demanding conditions.


More than just a mounting point for the throttle shutter (butterfly), the throttle shaft in Tillotson carburetors is a directional and application-specific part. It’s tailored to pull from the correct side and orientation required by the carburetor body design—making it essential for maintaining proper operation and linkage alignment.


Whether you're racing in open-class flathead competitions or tuning a high-performance small engine, this OEM-grade throttle shaft and lever assembly provides the reliability and fit you need to stay competitive.


Product Features:

  • OEM Tillotson Part #13-2135
  • Complete throttle shaft and lever assembly
  • Fits HL-380A and HL-380B Tillotson carburetors
  • Designed for open-class flathead racing applications
  • Directional-specific for proper throttle actuation
  • Ensures smooth and accurate throttle response
  • Durable construction for high-RPM performance environments


Application Note:

Tillotson throttle shafts are not universal. The direction of pull and shaft design are tailored to specific carburetor bodies. The 13-2135 assembly is purpose-built for the HL-380 series, ensuring proper linkage setup and throttle actuation.

FAQ

What carburetors does the 13-2135 throttle shaft fit?

The 13-2135 throttle shaft and lever assembly fits Tillotson HL-380A and HL-380B carburetors, designed for open-class flathead racing engines.


What does “directional-specific” mean for this throttle shaft?

Tillotson throttle shafts are designed to pull from specific sides and in certain directions, matching the carburetor body’s unique design. This ensures proper throttle linkage alignment and operation.


Is this a genuine Tillotson OEM part?

Yes, the 13-2135 is a genuine OEM Tillotson throttle shaft and lever assembly, built to factory specifications for durability and performance.


Can this be used for racing applications?

Absolutely. This part is designed for high-performance and open-class flathead racing environments requiring precise throttle control.


How do I know if I need to replace the throttle shaft assembly?

If you experience sticky throttle response, unusual play in the throttle lever, or visible wear, replacing the shaft assembly with an OEM part like the 13-2135 will restore smooth throttle operation.


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