Harddrive Breather Hose Pair - OEM-Spec Replacement - Harley Touring & Softail
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.
Keep your V-twin engine breathing right with a Harddrive breather hose replacement pair. These OEM-spec hoses are designed to replace brittle or cracked factory lines, ensuring proper crankcase ventilation and preventing oil leaks.
Why riders pick this
- OEM-spec replacement for factory breather hoses
- Restores proper crankcase ventilation
- Helps prevent oil leaks and vacuum issues
- Sold as a complete pair for V-twin engines
- Designed for durability against heat and age
Over time, the factory rubber breather hoses on your Harley-Davidson can deteriorate due to heat cycles and environmental exposure. This leads to cracking, hardening, and potential vacuum leaks or oil seepage into your airbox. The Harddrive breather hose pair offers a direct, OEM-spec replacement, restoring the integrity of your engine's ventilation system.
Restore Engine Performance and Reliability
- Direct replacement for original equipment breather hoses
- Designed to meet OEM specifications for fit and function
- Helps prevent oil leaks and maintain proper crankcase pressure
- Sold as a complete pair for convenient replacement of both lines
Essential Maintenance for Your V-Twin
Replacing your breather hoses is a critical maintenance item that can prevent larger issues down the road. This Harddrive kit makes it easy to swap out old, worn-out lines and ensure your engine continues to run efficiently. It's an ideal upgrade for riders performing routine maintenance or chasing down a persistent oil weep.
Specifications
- Brand: Harddrive
- Manufacturer Part #: 34-138
- UPC: 191361165856
- Quantity: 2 per pack
- Length: 6.29 in
- Width: 3.74 in
- Height: 0.39 in
- Weight: 0.485 lbs
- Country of Origin: China (Taiwan)
Common questions
Why do breather hoses need replacement?
Factory rubber hoses often crack and become brittle from engine heat and age, leading to improper crankcase ventilation, potential oil leaks, or vacuum issues.
How many hoses are included in this kit?
This kit includes two hoses, providing a complete pair to replace both breather lines on your Harley-Davidson V-twin engine.
Will these fit my specific Harley model?
This pair fits Harley-Davidson Softail models from 2000-2012 and Touring (FLT) models from 2001-2007. Please confirm your bike's year and model using our Shop by Bike tool before ordering.
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 | Accessories |
| SKU | 820-50571 |
| WEIGHT | 0.49 lb |
