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Tillotson DG1-HL OEM Diaphragm Gasket Kit
DG-1HL Tillotson OEM Diaphragm Gasket Kit
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Tillotson DG1-HL OEM Diaphragm Gasket Kit

Part Number: DG1-HL
Online Price: $10.99
DG1-HL Tillotson OEM Diaphragm Gasket Kit for Standard Volume Carburetors
Availability: In Stock.

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Description

Tillotson DG1-HL OEM Diaphragm Gasket Kit – Standard Volume (Single Stack, Gas) Carburetors


The Tillotson DG1-HL OEM Diaphragm Gasket Kit is the trusted choice for racers, mechanics, and technicians looking to maintain peak performance and reliability in their standard volume (single stack, gas) Tillotson carburetors.


This genuine OEM kit includes high-quality Tillotson components engineered for optimal fuel delivery, throttle response, and durability. Whether you're racing competitively or maintaining small engine equipment, using authentic Tillotson parts ensures your carburetor performs as designed.


OEM Quality for Superior Carburetor Performance

Unlike many aftermarket alternatives, this kit uses precision-manufactured diaphragms and gaskets that meet or exceed factory specifications. These components are designed to resist fuel degradation, maintain pressure consistency, and support optimal engine tuning.

Recommended Replacement Schedule:

  • Racing Engines: Every 3 races or at first sign of reduced performance
  • General Use (OE Applications): Every 4–6 weeks, or immediately if starting or tuning becomes difficult

Pro Tip: Use ethanol-free gasoline, especially in 4-cycle engines, to extend diaphragm life and reduce maintenance frequency.


What’s Included

  • .006" Fuel Pump Diaphragm
  • .020" Fuel Pump Diaphragm Gasket
  • Main Metering Diaphragm
  • Main Metering Diaphragm Gasket


Fitment & Compatibility

This kit fits all standard volume (single stack, gas) Tillotson carburetors using the standard HL-style pump plate, including popular racing and performance models such as:

  • HL-304F
  • HL-334A, HL-334AA, HL-334AB
  • HL-360A
  • HL-375A
  • HL-384A & HL-384B
  • HL-385A

Whether you’re rebuilding a performance kart carburetor or servicing a tuned 2-cycle engine, this kit gives you the confidence of OEM-grade materials and fitment.


Why Choose OEM Tillotson Kits?

  • Superior material quality over aftermarket alternatives
  • Trusted in both competitive racing and commercial-grade equipment
  • Consistent metering and throttle response
  • Guaranteed fit for HL-series carburetors
  • Recommended by top builders and tuners

FAQ

Q1: What carburetors does the DG1-HL OEM kit fit?

A: It fits most single stack (standard volume, gas) HL-series Tillotson carburetors including:

  • HL-304F
  • HL-334A / HL-334AA / HL-334AB
  • HL-360A
  • HL-375A
  • HL-384A / HL-384B
  • HL-385A

Always confirm your carb model before ordering.


Q2: What’s included in the DG1-HL kit?

A: This OEM rebuild kit includes:

  • .006” Fuel Pump Diaphragm
  • .020” Fuel Pump Diaphragm Gasket
  • Main Metering Diaphragm
  • Main Metering Diaphragm Gasket


Q3: When should I replace the diaphragm and gaskets?

A:

  • Racing engines: every 3 races or when performance drops
  • General use engines: every 4–6 weeks
    Replace sooner if you experience poor starting, tuning issues, or fuel delivery problems.


Q4: Can I use this kit with ethanol-blended gasoline?

A: It’s not recommended. Ethanol can degrade diaphragms more quickly. For best results and longer life, use ethanol-free fuel, especially in 4-cycle engines.


Q5: Why choose OEM instead of aftermarket rebuild kits?

A: OEM Tillotson parts are made to exact specifications with:

  • Better material quality
  • Longer lifespan
  • Tighter tolerances
  • Proven reliability in both racing and industrial applications

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