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Tillotson RK-113HL OEM Single Stack Rebuild Kit
RK-113HL OEM Tillotson Single Stack Rebuild Kit
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Tillotson RK-113HL OEM Single Stack Rebuild Kit

Part Number: RK-113HL
Online Price: $21.53
Tillotson RK-113HL OEM Rebuild Kit – HL-Series Gas Carburetors
Availability: In Stock.

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Description

Tillotson RK-113HL OEM Carburetor Rebuild Kit – HL-Series (Standard Volume)


Restore peak performance to your HL-series Tillotson carburetor with the Tillotson RK-113HL OEM Rebuild Kit — the factory-approved solution for standard volume, single-stack carburetors. Whether you're prepping for race day or just refreshing a worn unit, this genuine Tillotson kit ensures dependable performance, fuel control, and long-lasting reliability.


Why Choose the RK-113HL Rebuild Kit?

Genuine OEM Quality

Made with premium materials and precise tolerances, this rebuild kit offers superior sealing, fuel resistance, and durability compared to aftermarket kits — ideal for racing, karting, and small-engine performance applications.


Standard Volume Pump Stack Compatibility

Designed for single-stack (standard volume) HL Tillotson carburetors that feature two aluminum pump plates. (Not for high-volume "double stack" or methanol setups which require three plates.) Gaskets and diaphragms are not interchangeable between plate types, so proper match is critical.


Precision Fuel Control

Comes with a captured-style fulcrum arm and needle, where the forked arm “locks” onto the needle, and the .062" short inlet seat provides ideal fuel delivery for smaller displacement engines without the risk of flooding or bogging.


Correct Gasket & Diaphragm Specs

  • .004" laminated “snakeskin” fuel pump diaphragm: Thin, flexible, and responsive — ideal for small 2-cycle engines or high-RPM tuning.
  • .020" diaphragm gasket: The standard for HL carbs, offering optimal stack thickness for consistent pumping.

Always verify diaphragm and gasket thickness with your engine builder or carburetor spec sheet for best performance.


What's Included in the RK-113HL Kit

  • Main Diaphragm
  • Main Diaphragm Gasket
  • .004" Fuel Pump Diaphragm
  • .020" Fuel Pump Diaphragm Gasket
  • 1.00" Flange Gasket
  • Inlet Fuel Cap Gasket
  • Captured Needle
  • Captured Fulcrum Arm
  • Short Inlet Seat (.062” bore, 0.530” length)
  • Seat Gasket
  • .375" Welch Plug


Compatible HL-Series Carburetors

Rebuilds many standard-volume Tillotson HL carbs, including:

  • HL-232F
  • HL-244A
  • HL-282A / HL-282B
  • HL-306B
  • HL-318A / HL-318E
  • HL-324AE
  • HL-329C / HL-329D
  • HL-331A
  • HL-334WX
  • HL-382A


Looking for Enhanced Performance?

Try the P12-RK EC Pro Kit as a high-performance replacement for RK-113HL, or the P5-RK EC Pro Kit for greater fuel control and flow advantages. Always check your carb’s exact model and your racing rulebook before upgrading.

FAQ

Q1: What’s the difference between standard and high-volume pump plates?

Standard volume uses 2 aluminum plates (single stack), while high-volume uses 3 plates (double stack or “alky plates”). This kit only fits standard volume/single stack HL carburetors.


Q2: What carburetors are compatible with the RK-113HL?

Compatible with many HL-series carburetors like HL-232F, HL-282B, HL-334WX, HL-382A, and more. Always check your specific model to confirm.


Q3: What is a “captured” needle and why does it matter?

A captured needle is secured between the forked ends of the fulcrum arm. This design prevents dislodging under vibration and ensures consistent fuel metering—critical for racing engines.


Q4: Can I use this for a methanol-tuned or high-volume carburetor?

No. This kit is for gas-fueled, standard volume HL carburetors. Use the DG4-HLR or P68-MRK for high-volume or methanol carb setups.


Q5: What if I need a performance upgrade?

Choose from EC’s Pro Kits, which include OE-quality or upgraded components:

  • P12-RK: Direct RK-113HL replacement
  • P5-RK: High-performance alternative

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