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Tillotson Fuel Strainer Cap Cover Screw
15B-313 Tillotson Fuel Strainer Cover Screw
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Tillotson Fuel Strainer Cap Cover Screw

Part Number: 15B-313
Online Price: $0.71
15B-313 OEM Tillotson Fuel Strainer Cover Screw
Availability: In Stock.

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Description

15B-313 Tillotson OEM Fuel Strainer Cover Screw

The 15B-313 OEM Tillotson Fuel Strainer Cover Screw is the factory-original screw used to secure the plastic fuel inlet cap (fuel strainer cover) to the carburetor body. Designed for compatibility with standard Tillotson and EC Carburetors plastic caps, this screw ensures a proper seal around the fuel strainer without damaging the components.


Important: Avoid overtightening. Over-torquing this screw can crack the plastic inlet cap, leading to fuel leaks or poor carburetor performance.


Key Features:

  • OEM Part #: 15B-313
  • Secures plastic fuel strainer (inlet) cap to the carb body
  • Compatible with standard Tillotson and EC plastic inlet caps
  • High-quality steel construction
  • Designed to maintain fuel system integrity under vibration and racing conditions
  • Not compatible with most billet fuel inlet caps


Carburetor Compatibility:

Fits a wide range of Tillotson 2-cycle and 4-cycle racing carburetors, including:

HL Series:
HL-1A, HL-129E, HL-132H, HL-166B/C, HL-189F, HL-227A/E, HL-229A, HL-232A/E, HL-250A–E, HL-274E, HL-292G, HL-293A/F, HL-299E, HL-304E, HL-304WX/WXA/WXG, HL-306A, HL-314E/F/G, HL-324A, HL-334A/AA/AB/B/WX/WXA/WXG, HL-339A, HL-341A, HL-342A, HL-348A–E, HL-352A, HL-355A–E, HL-357A/B, HL-360A–C, HL-365A/B, HL-366A, HL-368A, HL-371A, HL-374A, HL-380A/B, HL-383A, HL-384A/B, HL-385A, HL-388A, HL-395A

HR Series:
HR-181B, HR-184A, HR-190A, HR-191C/G, HR-196A

HW Series:
HW-10A/B, HW-11A/B, HW-12A, HW-17A, HW-19A, HW-22A, HW-23A, HW-27A, HW-30A, HW-31A, HW-32A, HW-33A, HW-34A, HW-35A, HW-43A

Also Fits:
HB-10A/B/C, HC-103A, HC-112A, HM-1A, HM-2A, HM-12A, HX-10A, HX-12A

And many more. Refer to your carburetor parts diagram for verification.


Pro Tip:

Always hand-tighten the screw just until snug. If additional torque is needed, do so in ¼-turn increments, and never use power tools — the plastic caps are delicate.


What’s Included:

  • (1) OEM 15B-313 Fuel Strainer Cover Screw

FAQ

Q1: What does the 15B-313 Fuel Strainer Cover Screw do?
A: It secures the fuel strainer (inlet) cover—typically a plastic cap—to the carburetor body, ensuring a proper seal to keep debris out of the fuel system.


Q2: Which Tillotson carburetors is this screw compatible with?
A: It fits nearly all HL, HW, HR, HM, HX, and HD series Tillotson carburetors that use a standard plastic fuel inlet cap.


Q3: Can I use this screw with billet fuel inlet caps?
A: No. The 15B-313 is not compatible with most billet-style fuel inlets due to differences in thickness and threading.


Q4: How tight should I install the screw?
A: Hand-tighten the screw just until snug. Overtightening may crack the plastic fuel strainer cap, leading to fuel leaks or poor performance.


Q5: Is this an OEM Tillotson screw?
A: Yes. This is a genuine OEM Tillotson part, ensuring the correct fit, finish, and reliability for your carburetor.

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