Harddrive Performance Air Filter - Harley Milwaukee-Eight & Twin Cam
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.
Maximize the performance of your Harley Milwaukee-Eight or Twin Cam with a Harddrive Performance Air Filter. This filter features pleated cotton media, engineered to significantly increase airflow to your engine for a noticeable boost.
Why riders pick this
- Enhances engine airflow for performance gains
- Pleated cotton media delivers excellent filtration
- Washable and reusable for lasting value
- Pre-oiled and ready for quick installation
A direct replacement for OEM part number 29400045, this Harddrive air filter drops right into your existing airbox assembly. It comes pre-oiled and ready for immediate installation, streamlining the upgrade process.
Optimized for Power and Durability
- Pleated cotton media construction for maximum filtration and airflow
- Increases engine airflow for improved performance
- Washable and reusable design for extended filter life
- Black media finish complements any air cleaner cover
Long-Term Value for Your Ride
The washable and reusable nature of this Harddrive air filter means you'll save money over time by not constantly buying disposable filters. Its extended service intervals also mean less frequent maintenance, allowing you more time to enjoy the ride. This is an essential first step for any rider looking to optimize their V-twin's intake and prepare for further performance modifications like exhaust systems or cam upgrades.
Specifications
- Brand: Harddrive
- Manufacturer Part #: TJ-A-134
- UPC: 191361469695
- Dimensions: 8 in L × 4 in W × 4 in H
- Weight: 2 lbs
- Country of Origin: China (Mainland)
Common questions
Is this air filter pre-oiled and ready to install?
Yes, this Harddrive Performance Air Filter comes pre-oiled and ready for immediate installation directly out of the box. No additional preparation is needed.
Can I wash and reuse this filter?
Absolutely. The cotton media is designed to be washable and reusable. Simply clean it when it's dirty and re-oil it using a standard air filter service kit.
Is this a direct replacement for my OEM air filter?
Yes, this filter is a direct replacement for OEM part number 29400045 and is designed to install directly into your stock air filter assembly. Please confirm fitment for your specific model year using our Shop by Bike tool.
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 | Air Filters |
| SKU | 820-50683 |
| WEIGHT | 2.0 lb |
