Harddrive CV Adaptor Spacer - Milwaukee-Eight to CV Carburetor for Harley-Davidson
About Harddrive
Harddrive is the house performance and replacement line built for American V-twins, covering everything from engine hardware and electrical to controls, lighting and chassis parts. The range is aimed squarely at Harley-Davidson and Indian riders who want a direct-fit part without dealer pricing, and it spans decades of model years — from Evolution-era Softails to current Milwaukee-Eight baggers.
The Harddrive CV Adaptor Spacer is specifically engineered to bridge the gap between Milwaukee-Eight (M8) engines and CV carb intake configurations on V-twin motorcycles. This crucial component allows for greater versatility in your air cleaner setup.
Why riders pick this
- Adapts Milwaukee-Eight to CV carb intake configurations
- Allows use of 5-inch round aftermarket air cleaner covers
- Supports 90-degree air cleaner designs with adapter plates
- Compact 1-inch spacer height for easy integration
This adaptor spacer enables the use of a wider range of aftermarket air cleaners, including popular 5-inch round outer covers with a center bolt. It also facilitates the integration of 90-degree air cleaner designs when combined with specific Harddrive adapter plates.
Unlock More Air Cleaner Options
- Enables the use of 5-inch round air cleaner outer covers with a center bolt
- Compatible with 90-degree air cleaner designs when paired with Harddrive adapter plates
- Bridges Milwaukee-Eight engines to CV carb intake configurations
- Compact design with a 1-inch spacer height for streamlined integration
Build Your Ideal Intake System
For riders looking to customize their M8's intake or integrate a CV carb setup, this Harddrive adaptor spacer is an essential piece. It provides the necessary interface to run a variety of aftermarket air cleaners, letting you fine-tune both the performance and aesthetics of your V-twin. Remember to pair it with the specified Harddrive adapter plates for a complete and secure installation, ensuring your custom intake system performs as intended.
Specifications
- Brand: Harddrive
- Manufacturer Part #: 120429
- UPC: 191361228933
- Dimensions: 5 in L x 5 in W x 1 in H
- Weight: 0.5 lbs
- Country of Origin: China (Taiwan)
Common questions
What types of air cleaners can I use with this adaptor spacer?
This spacer allows for 5-inch round air cleaner outer covers with a center bolt. It also works with 90-degree air cleaner designs when paired with compatible Harddrive adapter plates.
Do I need any other parts to use this spacer?
Yes, for proper installation and compatibility, this spacer must be used with either Harddrive adapter plates 820-505074 or 820-50575.
What is the primary function of this adaptor spacer?
The primary function is to bridge the intake configurations between Milwaukee-Eight engines and CV carburetors, expanding your options for aftermarket air cleaner installations.
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 | Harddrive |
| TYPE | Intake/Carb/Fuel System |
| SKU | 820-50578 |
| WEIGHT | 0.5 lb |
