What does this diaphragm do in my carburetor?

This diaphragm is part of the throttle slide vacuum valve in your Keihin CV carburetor. It helps control the flow of fuel by responding to engine vacuum, ensuring a smooth throttle response and proper air-fuel mixture.

How do I know if I need to replace my carburetor diaphragm?

Symptoms of a torn or punctured diaphragm include hesitation during acceleration, poor idle quality, or a general lack of power. If your carburetor isn't responding as it should, this diaphragm is a common part to inspect and replace.

Does this diaphragm come with any other parts?

No, this product is sold individually and includes only the diaphragm seal. You will need to reuse other components from your carburetor during the replacement process.

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Twin Power 90-06 Big Twin and XL Keihin CV Carburetor Diaphragm Only

Specifications

Brand: TwinPower
Part #: 482841
UPC: 887337165219

Twin Power 90-06 Big Twin and XL Keihin CV Carburetor Diaphragm Only

Name: Twin Power 90-06 Big Twin and XL Keihin CV Carburetor Diaphragm Only
Brand: TwinPower
SKU: twinpower-twin-power-90-06-big-twin-and-xl-keihin-cv-carburetor-diaphragm-only-t14-610749
Price: 10.23 USD
Availability: InStock

$10.23

In Stock

Twin Power 90-06 Big Twin and XL Keihin CV Carburetor Diaphragm Only. A perfect replacement for your stock carb diaphragm.

Key Features

This product is a single diaphragm replacement for Keihin CV carburetors.
It is designed to replace punctured or torn seals on throttle slide vacuum valves.
This part fits 1990-2006 Harley-Davidson Big Twin and XL models.
It serves as a perfect replacement for the stock Keihin CV carb diaphragm.

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Will this fit your vehicle?

Product Details

This product includes one diaphragm, which is a direct replacement for the rubber seal found in the throttle slide vacuum valve of Keihin CV carburetors. If your motorcycle's carburetor isn't responding correctly, or if you notice a hesitation when you twist the throttle, a torn or punctured diaphragm could be the culprit. This part is designed to get your fuel system working smoothly again.

This diaphragm is a well-built replacement for the original equipment on a wide range of Harley-Davidson Big Twin and XL models from 1990 through 2006, including popular bikes like the Road King, Electra Glide, and Fat Boy. It's a simple, individual component that addresses a common wear item in these Keihin CV carburetors, helping to restore proper vacuum operation and ensure consistent fuel delivery. Replacing this part is a straightforward way to address performance issues related to the carburetor's air-fuel mixture control.