✓ VERIFIED
Jan 28, 2023
Looks cool,functions as it should,if a retaining clip could be fitted it would be easier to remove for cleaning and installing
HARDDRIVE
SKU: 820-51578
Harddrive Chrome Crankcase Breather Assembly - V-Twin
$25.95
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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.
Ensure proper engine ventilation and add a touch of chrome with the Harddrive Crankcase Breather Assembly. This direct replacement unit is designed to separate oil mist from crankcase vapors, promoting cleaner engine operation. Its brilliant chrome finish also provides a custom look to your V-twin engine.
Why riders pick this
- Brilliant chrome finish for custom appeal
- Effectively separates oil mist from vapors
- Designed for 3/8" crankcase breather hoses
- Direct replacement for many stock units
- Ensures proper crankcase ventilation
A well-functioning crankcase breather is essential for your V-twin's health, preventing pressure buildup and keeping oil where it belongs. The Harddrive Crankcase Breather Assembly offers a reliable solution, effectively filtering out oil mist. With its chrome-finished vent filter and robust design, it's a functional upgrade that also enhances your bike's aesthetics.
Efficient Engine Ventilation and Style
- Chrome-finished vent filter and base
- Designed for 3/8" hose connections
- Separates oil mist from crankcase vapors
- Direct replacement for stock breather systems
Simple Bolt-On Breather Upgrade
This Harddrive breather assembly is engineered for straightforward installation, making it a simple bolt-on upgrade for many V-twin motorcycles. It helps maintain optimal engine performance by ensuring proper crankcase pressure relief while keeping your intake system cleaner. Replacement filters are also available separately, ensuring easy maintenance down the road.
Specifications
- Brand: Harddrive
- Manufacturer Part #: 14-014
- UPC: 191361166686
- Dimensions: 6 in L x 4 in W x 2 in H
- Weight: 0.507 lbs
- Country of Origin: China (Taiwan)
Common questions
What size hose does this crankcase breather assembly accommodate?
This Harddrive crankcase breather assembly is designed to work with 3/8" diameter hose connections. Please confirm your bike's hose size before ordering.
Is this a direct bolt-on replacement for my V-twin?
Yes, this crankcase breather assembly is a direct replacement for many stock crankcase breather systems on V-twin motors. You should verify hose connection size for compatibility.
Can I purchase replacement filters for this assembly?
Yes, Harddrive offers replacement filter elements separately, allowing you to maintain the assembly without needing to purchase a whole new unit.
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 | Engine |
| SKU | 820-51578 |
| WEIGHT | 0.51 lb |
Please contact us to confirm fitment for your specific motorcycle, or check the product title for compatibility notes.
CUSTOMER REVIEWS
4.4
5 RATINGS
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✓ VERIFIED
Aug 22, 2023
Having no luck with the harley shops around here it was a pleasure getting them thru you. The main reason I was given, that they could not get them, always on back order. Thank you for being so helpful. <br /> MUTT Duncan
✓ VERIFIED
Jul 23, 2023
Works great!…………………
Works great…………………………………….
✓ VERIFIED
Jun 5, 2023
Crankacase breather
It’s too bulky have no where to put it for can look like it belongs there
✓ VERIFIED
Feb 2, 2023
These things are very well built, nice pieces, but huge. I was looking for a small filter for crank pressure bypass but these are simply too large to mount anywhere.
