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Tillotson RK-114HL OEM Standard Volume(Single Stack, Gas) Rebuild Kit
RK-114HL Tillotson OEM Single Stack Rebuild Kit
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Tillotson RK-114HL OEM Standard Volume(Single Stack, Gas) Rebuild Kit

Part Number: RK-114HL
Online Price: $21.53
Tillotson RK-114HL OEM Rebuild Kit – Single-Stack Carb Repair
Availability: In Stock.

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Description

Tillotson RK-114HL OEM Rebuild Kit – Standard Volume (Single-Stack, Gas)

Ensure optimal performance and reliability with the Tillotson RK-114HL OEM Standard Volume Rebuild Kit—a precision-engineered upgrade designed specifically for Tillotson carburetors equipped with single-stack (gas) fuel pump assemblies.


Why Choose OEM?

  • Manufactured to factory specifications, ensuring perfect fit and function.
  • Proven performance and tested longevity—no guesswork or compromises.
  • Aftermarket kits often fail prematurely and may risk engine damage or failure due to inferior components.
  • Each RK-114HL kit includes OEM parts sealed in packaging with the Tillotson logo to guarantee authenticity.


Authenticity Checks:

  1. Packaging – RK-114HL kits come in Tillotson-branded product bags.
  2. Diaphragm quality – OEM diaphragms have a smooth, laminated finish resistant to methanol, ethanol, and nitro. Aftermarket options often feel thin, weave-textured, and vulnerable to fuel degradation.
  3. Performance concerns from aftermarket kits include:
    • Inlet needle and seat leaks (causing fuel flooding via high-speed ports)
    • Erratic idle and tuning instability—issues not present before the rebuild


About Standard Volume Pump Kits

Also known as single-stack or gas plate kits, these are best suited to standard carburetor configurations. Despite the naming confusion (one stack typically consists of two plates), the important distinction lies in fuel volume:

  • Standard Volume (Single-Stack, Gas): Ideal for most gasoline carb setups
  • High Volume (Double-Stack, Alky): Designed for high-flow applications using alcohol-based fuels


What's Included:

  • Main metering diaphragm
  • Main metering diaphragm gasket
  • .004" pump diaphragm
  • .020" fuel pump gasket
  • Fuel strainer/cork gasket
  • Flange gasket
  • Low-side body welch plug
  • Inlet seat (16.42 mm / .645")
  • Inlet seat gasket
  • Captured inlet needle
  • Captured control lever


Compatible Carburetors

Racing Applications:

  • Comer 80 HL-166B
  • PRD Fire Ball with HL-395A


Lawn, Industrial & Equipment Engines:
HL-109B, 112D, 125C, 132C, 155B, 158A, 166B/C/D/E, 172A/B, 180B, 189A, 205B, 217A, 218A, 220A, 223A, 239B/BE, 256A, 257A, 258A/B, 270A, 292A/B/C/D/E, 296A/E, 299C, 301A, 326A, 327B/C/D, 338A, 351A, 352A, 357A/B, 364A, 366A, 367A, 369A, 371A, 372A, 392A, 395A

FAQ

Q: What does this kit replace?
A: The RK-114HL rebuilds single-stack (standard volume) fuel pumps on Tillotson HL-series carburetors for accurate fuel metering.


Q: Will aftermarket kits cause issues?
A: Often yes. Non-OEM diaphragms may leak, wear faster, or degrade—leading to problems like flooding or inconsistent engine performance .


Q: Is it compatible with racing carburetors?
A: Yes. Fits models such as Comer 80 HL-166B and PRD Fire Ball (HL-395A), and a vast range of other Tillotson carbs .


Q: Are the parts genuine Tillotson?
A: Absolutely. Each part is factory-made to OEM specs and comes in Tillotson-branded packaging.


Q: What's the difference between single and double-stack kits?
A: Single-stack (standard) provides lower fuel volume suited to gas carbs, while double-stack (high-volume) handles higher flow for alcohol setups.

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