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Tillotson 47A-276 Nozzle Valve
47A-276 Tillotson Nozzle Valve
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Tillotson 47A-276 Nozzle Valve

Part Number: 47A-276
Online Price: $8.99
47A-276 Tillotson Nozzle Valve – HL-Series OEM Replacement
Availability: In Stock.

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Description

Tillotson 47A-276 Nozzle Valve – OEM Replacement


The 47A-276 Tillotson Nozzle Valve is an OEM replacement part designed to protect the internal fuel circuit of the carburetor in the event of a backfire. It’s a critical component for maintaining carburetor integrity and consistent fuel delivery in performance and racing engines.


This nozzle does not include a check ball. If you’re experiencing flooding or fuel leakage at idle, the cause is typically a faulty seat or needle valve, not the nozzle itself. Always inspect and verify the entire high-side fuel circuit during troubleshooting.


Key Features:

  • OEM Tillotson nozzle – part number 47A-276
  • Designed to fit select HL-series carburetors
  • Protects the carburetor against backfire-related damage
  • Press-in style nozzle (verify your carburetor before removal)
  • No check ball – not responsible for fuel shutoff at idle
  • Does not include a side hole – must be matched to your specific application or build
  • Always align correctly with pick-off port during installation


Installation Notes:

  • DO NOT remove or install the nozzle while the adjustment needle is in place — this can damage the needle or internal threads.
  • When reinstalling, be sure the side port (if applicable) aligns with the pick-off hole in the carburetor body. Misalignment can result in poor tuning, inconsistent performance, or fuel starvation.
  • Always verify nozzle style (press-in vs threaded) before removal.
  • If you’re unsure of your carburetor model, measure both the length and diameter of your original nozzle for comparison.


Specs:

  • Nozzle Length: 0.241"
  • Nozzle Diameter: 0.200"


Compatible With:

  • Tillotson HL-360A
  • Tillotson HL-1A
  • Tillotson HL-355A, HL-355E
  • And other compatible HL-series carburetors using this nozzle style


Trust EC Carburetors for precision Tillotson replacement parts — including the 47A-276 nozzle valve, engineered for exact fit and reliable performance.


FAQ

Q1: What does the 47A-276 nozzle valve do?

A: The 47A-276 nozzle valve protects the internal fuel system of your Tillotson carburetor in the event of a backfire. It also aids in fuel delivery through the high-speed circuit.


Q2: Does this nozzle have a check ball?

A: No. The 47A-276 does not include a check ball. If you're experiencing flooding or fuel leakage at idle, the issue is typically a leaking seat or needle valve, not the nozzle.


Q3: How do I know if this nozzle fits my carburetor?

A: This nozzle fits HL-series Tillotson carburetors like HL-360A, HL-355A, and HL-1A. Check your carb model or measure your original nozzle to confirm 0.241" length and 0.200" diameter.


Q4: Is this a press-in or threaded nozzle?

A: The 47A-276 is a press-in style nozzle. Some HL carburetors use threaded nozzles, so it’s important to verify your carburetor before removal or replacement.


Q5: What should I watch for during installation?

A: Always remove the adjustment screw before replacing the nozzle to avoid damaging the needle. Align the nozzle properly with the fuel pick-off hole, or tuning problems may occur.

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