Harddrive Air Cleaner Brackets - M8 (ex 23 Cvo) — Harley-Davidson Road King Special, Electra Glide Ultra Limited, Street Glide (2017-2025)

Harddrive air cleaner brackets for Milwaukee-Eight engines, designed to support aftermarket air cleaners without integrated breather systems. These brackets allow fitment of various M8-compatible air cleaner assemblies when used with optional breather kits or spacers.

Features

• Support brackets for aftermarket M8 air cleaners
• Works with optional breather kits (sold separately)
• Compatible with CV/Delphi EFI bolt pattern via spacer 820-50525
• Accommodates 5-inch round air cleaner covers with center bolt

Specifications

• Brand: Harddrive
• Manufacturer Part #: 120426
• UPC: 191361228926
• Length: 10 in
• Width: 7 in
• Height: 2 in
• Weight: 2 lbs
• Country of Origin: China (Taiwan)

Fitment

Fits Milwaukee-Eight (M8) engines, excluding 2023 CVO models. Not legal for use in California on pollution-controlled vehicles — verify local emissions laws before installation.

Frequently Asked Questions

Do these brackets come with a breather kit?

No — these are brackets only. Optional breather kits are sold separately and can be paired with these brackets.

Can I use a custom breather system with these brackets?

Yes. These brackets are designed to work with custom breather systems and aftermarket air cleaner assemblies.

Will these fit a 2023 CVO?

No — these brackets are not compatible with 2023 CVO models. Standard M8 models 2017-2022 are supported.

What spacer do I need for Delphi EFI bolt pattern air cleaners?

Use spacer 820-50525 in conjunction with breather/bracket kit 820-50512 to mount CV/Delphi EFI pattern cleaners to TBW models.

Are these street legal?

Not legal in California on emissions-controlled vehicles. Check your state and local regulations before installation.