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EC P12-RK Pro Rebuild Kit for Standard Volume(Single Stack, Gas)Carburetors
P12-RK EC Pro Single Stack HL Rebuild Kit (Captured)
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EC P12-RK Pro Rebuild Kit for Standard Volume(Single Stack, Gas)Carburetors

Part Number: P12-RK
Online Price: $18.99
EC P12-RK Pro Rebuild Kit for Standard Volume Gas Carburetors
Availability: In Stock.

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Description

EC P12-RK Pro Rebuild Kit for Standard Volume (Single Stack, Gas) Carburetors


High-Performance Carburetor Rebuild Kit for Small Engine Racers

The EC P12-RK Pro Rebuild Kit is engineered specifically for Standard Volume (Single Stack, Gas) Tillotson-style carburetors, offering race-proven durability, precision, and performance for serious racers and small engine professionals.


Built with OE-spec and specialized aftermarket components, this rebuild kit is ideal for kart racers, small engine tuners, and high-performance builders who demand top-tier quality over low-cost compromises.


Key Features:

  • Fast Action Main Diaphragm – Designed as an aftermarket upgrade, this high-response diaphragm improves fuel metering, throttle response, and consistency under race conditions. The improved "wagon wheel" design ensures precise fulcrum height adjustment.
  • .020" Fuel Pump Gasket – Compliant with most kart racing class rules, this gasket holds standard volume. For high-volume carburetors requiring .040" gaskets, we recommend the EC P5-RK Kit if allowed by rules.
  • .062" ID Fuel Inlet Seat (Short Gas Seat) – Optimized for gas engines, including piston port 2-cycles and small block 4-cycles. This is the main difference between the P12-RK and the P5-RK kits.
  • Captured Needle & Fulcrum Arm – Ideal for carburetors with the fuel pump stack facing downward. The captured design maintains positive contact for more consistent operation and reliability.
  • Exclusive Parts Diagram Included – Every Pro Kit includes a detailed exploded diagram and parts list to assist in accurate assembly and part identification—something no OE or aftermarket kit offers.


Kit Contents:

  • Fast Action Main Diaphragm
  • Diaphragm Gasket
  • .006 Fuel Pump Diaphragm
  • .020 Fuel Pump Gasket (Standard for gas engines)
  • .375" Welch Plug
  • .825" Flange Gasket
  • Captured Viton Inlet Needle
  • Captured Fulcrum Arm
  • .062" ID Fuel Inlet Seat (0.532" overall length)
  • Copper Inlet Seat Gasket
  • Brass Fuel Strainer Screen
  • Fuel Strainer Cork Gasket
  • High/Low Side Needle O-Ring


Compatible Carburetors:

This rebuild kit fits any Standard Volume (Single Stack, Gas) Tillotson-style carburetor using a .062 seat and captured fulcrum arm & inlet needle.


Replaces Tillotson RK-113HL


Why Choose EC Pro Gasket Kits?

Unlike basic aftermarket kits focused on affordability, EC's Pro Kits are built for racing performance, long-lasting durability, and ease of installation. Every component is carefully selected for high-performance racing environments, and the included diagram ensures DIY racers can rebuild confidently.

FAQ

1. What carburetors is the EC P12-RK compatible with?

The EC P12-RK is compatible with Standard Volume (Single Stack, Gas) Tillotson-style carburetors that use a .062” fuel inlet seat and a captured fulcrum arm and needle.


2. How is this kit different from the EC P5-RK?

The primary difference is the fuel seat size:

  • P12-RK includes a .062” gas seat
  • P5-RK includes a .093” alky seat
    Choose based on whether your engine runs gasoline or alcohol-based fuel.


3. Does this kit come with installation instructions?

The kit includes a parts breakdown diagram showing assembly order and part placement—something not found in other OE or aftermarket kits. Ideal for DIY racers.


4. Is the Fast Action Diaphragm better than OEM?

Yes, the Fast Action Main Diaphragm is an aftermarket performance upgrade designed for quicker throttle responseand consistent fuel delivery under racing conditions.


5. Does it meet kart racing class rules?

Yes, it includes the .020" fuel pump gasket, which is commonly required by most gasoline karting class rules. Always confirm with your rulebook before use.


6. What part does this kit replace?

The EC P12-RK Pro Kit replaces Tillotson RK-113HL, offering better durability and enhanced performance over standard kits.


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