Mikuni Rubber Flange Adapter HS-45 Carburetor Adapter - Harley Touring, Softail, Dyna
About Mikuni
Mikuni has supplied carburetors and fuel-system components to the motorcycle industry for decades, and its HSR series remains a common choice for carbureted Evolution and Twin Cam V-twins where a clean, tunable fuel curve matters more than electronics.
This Mikuni rubber flange adapter is an OEM replacement part for V-twin motorcycles equipped with an HS-45 carburetor. It's engineered to create a precise seal between the intake manifold and the carburetor body, crucial for maintaining optimal air-fuel mixture and preventing vacuum leaks. This genuine Mikuni part ensures proper fitment and vibration damping.
Why riders pick this
- Genuine Mikuni OEM replacement part
- Ensures airtight seal between carb and manifold
- Rubber construction for vibration damping
- Direct fit for HS-45 series carburetors
- Critical for maintaining proper air-fuel mixture
When you're running a Mikuni HS-45 carburetor on your Harley, every component matters for peak performance. This genuine Mikuni rubber flange adapter is designed to provide a secure, airtight connection between your carb and intake manifold. Over time, original rubber flanges can harden, crack, or lose their sealing integrity, leading to lean conditions and poor running. Replacing it with this OEM part restores the critical seal, ensuring your V-twin gets the consistent air-fuel mixture it needs.
Restore Peak Carburetor Performance
- Genuine Mikuni OEM part ensures exact fit and reliable performance
- Durable rubber construction effectively dampens vibrations
- Creates a critical airtight seal between the carb and intake manifold
- Direct replacement for HS-45 series carburetors
Maintain Your V-Twin's Fuel System Health
Ensuring your carburetor is properly sealed to the intake manifold is fundamental for consistent engine performance. A failing flange adapter can introduce unmetered air, causing erratic idle, poor throttle response, and a lean condition that can harm your engine over time. This adapter is an essential maintenance item for any Harley rider running an HS-45 Mikuni carb, helping to keep your fuel system operating as intended.
Specifications
- Brand: Mikuni
- Manufacturer Part #: FHS42/062-45K
- Length: 4.3 in
- Width: 3.3 in
- Height: 1.1 in
- Weight: 0.25 lbs
- Country of Origin: Japan
Common questions
What does this Mikuni flange adapter do?
This rubber flange adapter seals the carburetor to the intake manifold, preventing air leaks and dampening vibrations. This is crucial for consistent air-fuel mixture delivery to your engine.
Will this adapter fit my Harley-Davidson with a Mikuni carb?
Yes, if your Harley-Davidson is equipped with a Mikuni HS-45 series carburetor, this is the correct genuine OEM replacement part. Please confirm your carburetor model before ordering.
Is this a direct replacement for my worn-out adapter?
Yes, this is a genuine Mikuni OEM part designed as a direct replacement for the original rubber flange on HS-45 carburetors. No modifications are needed for installation.
Ordering from Vtwinbikers
- Brand new, sourced through authorized US distribution — never used, never grey-market.
- Not sure it fits? Use Shop by Bike to filter by your year and model, or email us and we will confirm before you order.
- Harley-Davidson and Indian Motorcycle is all we do, so you are talking to people who ride what you ride.
| BRAND | Mikuni |
| TYPE | Intake/Carb/Fuel System |
| SKU | 14-2029 |
| WEIGHT | 0.25 lb |
