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EC P6-MDG Pro Rebuild Kit for High Volume(Double Stack, Alky) Carburetors
P6-MDG EC Pro Mylar Double Stack Gasket Diaphragm Kit
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EC P6-MDG Pro Rebuild Kit for High Volume(Double Stack, Alky) Carburetors

Part Number: P6-MDG
Online Price: $10.99
Phone Order Price:$12.99
You Save:$2.00(15%)
EC P6-MDG Pro Carburetor Rebuild Kit for High Volume Alky Engines
Availability: In Stock.

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Description

EC P6-MDG Pro Rebuild Kit for High Volume (Double Stack, Alky) Carburetors


The EC P6-MDG Pro Rebuild Kit is engineered specifically for professionals and serious competitors in the small engine racing world. Designed for high volume (double stack, alky) Tillotson-style carburetors, this kit offers a performance-focused solution that exceeds both OE and typical aftermarket standards.


Unlike OE Tillotson kits or many aftermarket alternatives, EC’s Pro Gasket Kits are built with a racing-first approach—prioritizing durability under extreme conditions, responsive fuel delivery, and long-lasting reliability over cost-cutting compromises.


Professional-Grade Components for a Complete Rebuild

We use a mix of OE-quality and superior aftermarket parts, carefully selected for their resilience in high-performance racing conditions. Each kit includes components often left out of other kits—such as the brass fuel strainer screen and cork gasket—ensuring a more complete and dependable rebuild.

To make the rebuild process even more intuitive, we include a detailed parts diagram exclusive to EC Pro Kits. This diagram provides a full breakdown of the Tillotson carburetor assembly, helping DIY racers and tuners confirm correct reassembly every time.


Performance Enhancements Included

The Fast Action Main Diaphragm, developed exclusively by EC, is a significant upgrade over OE and other aftermarket metering diaphragms. Its improved design delivers:

  • Faster throttle response
  • More consistent fulcrum arm height (thanks to precision dowel placement)
  • Smoother metal finish for longer wear and improved feel

Additionally, this kit includes a bi-axially oriented polyester film (BOPET) pump diaphragm—commonly known as Mylar®—which surpasses OE Mylar in both fuel resistance and chemical stability. Compared to the "snakeskin" Polytetrafluoroethylene(PTFE) diaphragms, this material offers greater durability and longer life, especially under harsh racing conditions.

We highly recommend this kit for:

  • 4-cycle methanol (alky) engines
  • 2-cycle reed valve racing engines


OE Replacement & Compatibility

This rebuild kit replaces the Tillotson DG-4HL and fits a wide range of high volume (double stack, alky) Tillotson carburetors, including:

  • HL Series: HL-304WX, HL-348A/B/C/D/E/F, HL-355A/B/C/D/E, HL-360B/C, HL-380A/B
  • HR Series: HR-181, HR-191, HR-196

Whether you're servicing a modern methanol-fueled kart engine or maintaining vintage high-output setups, the EC P6-MDG Pro Kit ensures maximum performance and long-term reliability.


Kit Contents:

  • Fast Action Main Diaphragm
  • Diaphragm Gasket
  • (BOPET) Fuel Pump Diaphragm
  • Fuel Pump Gasket
  • Inlet Valve Diaphragm
  • Inlet Valve Gasket
  • Brass Fuel Strainer Screen
  • Fuel Strainer Cork Gasket

FAQ

Q1: What carburetors does the EC P6-MDG Pro Rebuild Kit fit?
A: This kit fits high-volume (double stack, alky) Tillotson-style carburetors, including HL-304WX, HL-355 series, HL-380, HR-181, HR-191, and more.


Q2: What makes this kit different from standard rebuild kits?
A: EC’s Pro Kit includes racing-specific components like the Fast Action Main Diaphragm, BOPET (Mylar®) pump diaphragm, and brass fuel strainer—components often missing from OE or budget aftermarket kits.


Q3: Is this rebuild kit compatible with methanol (alky) fuel?
A: Yes, it's specifically designed for methanol-fueled engines and offers enhanced chemical resistance and diaphragm durability under alky racing conditions.


Q4: Does the kit include a diagram or instructions?
A: Yes, every EC P6-MDG Pro Kit includes a proprietary parts diagram for Tillotson-style carburetors to guide you through correct reassembly.


Q5: Can I use this kit for both 2-cycle and 4-cycle engines?
A: Absolutely. It's ideal for both 4-cycle methanol engines and high-performance 2-cycle reed valve racing engines.

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