6 Best Oil Filters for Harley-Davidson Bikes I Actually Trust

I’ve changed the oil on my Harley more times than I can count, and I’ve learned that the filter matters as much as the oil. A cheap, poorly built filter can restrict flow on a cold start or let dirt slip through. On an air-cooled V-twin that runs hot, that’s the last thing I want.

Over the years I’ve run genuine Harley-Davidson filters, K&N, and Hiflofiltro on my own bikes and compared them for fitment, ease of install and value. Here are the six I’d happily bolt onto a bike today, plus the buying advice I wish someone had given me earlier.

1. Harley-Davidson Genuine Spin-On Oil Filter (Black, 63731-99A) — Best Overall

When I want zero second-guessing, I reach for the Harley-Davidson Genuine Black Oil Filter. It’s built to the same spec as the filter that came on many bikes from the factory. That means correct gasket size, correct bypass valve pressure and the right thread.

Expect to pay roughly $12 to $18 at a dealer or online. That’s a few dollars more than some rivals, but I think it’s money well spent for peace of mind.

Why I Like It

The black finish looks clean on most Softails, Dynas and Touring bikes. It also hides the inevitable drips and road grime better than chrome. The canister is sturdy, and the gasket seats nicely every time.

I’ve never had a leak with a genuine H-D filter when I followed the install steps. That’s a track record I value.

Things to Keep in Mind

There’s no wrench flat or nut on the end, so you need a cap-style removal tool or a good strap. Fitment also varies by model and year. Always double-check the part number against your manual or the dealer’s fitment guide.

2. K&N KN-170 — Best for Easy Installation

The K&N KN-170 is the filter I recommend to anyone who hates fighting with a filter wrench. K&N welds a 17mm nut to the end of the canister. A regular socket and ratchet will remove it, and you can snug it down precisely.

It typically sells for about $12 to $16, and it comes in black. A chrome version, the KN-170C, is also available if you prefer the bright look.

My Experience With It

On a bagger with a crowded oil filter area, that nut was a game changer. I could remove the filter without cutting up my knuckles or mangling the can.

The canister is solid, the gasket is soft and pliable, and the filtration media is rated for the high temps Harley engines produce. I’ve had no leaks in thousands of miles.

Possible Downsides

Some riders find the nut a bit too tempting to overtighten. Don’t. Hand-tighten and then add roughly a half to three-quarter turn, as the instructions say.

3. Hiflofiltro HF170B — Best Value for Big Twins

If you want a quality filter without paying dealer prices, the Hiflofiltro HF170B is where I’d look. It’s a black premium spin-on that’s designed for many Big Twin Harley models. Street prices often fall between $8 and $12.

Hiflofiltro is a well-known name in the powersports world, and the HF170B is one of their most popular Harley filters.

What Stands Out

The build quality is excellent for the money. The canister is strong, the media is pleated for good surface area, and an anti-drainback valve helps keep oil in the filter between rides. That cuts down on the dry-start rattle some riders notice after sitting for a while.

I like buying these in multi-packs. It’s an easy way to keep a spare on the shelf for the next service.

Where It Falls Short

Like the genuine H-D filter, the HF170B has no wrench nut on the end. Plan on using a cap wrench or a strap. Otherwise, I have no real complaints.

4. K&N KN-171B — Best for Sportster Owners

Sportster riders have a different filter fitment than Big Twin riders, and the K&N KN-171B is my go-to pick for them. It’s a black, compact spin-on that fits many Sportster 883 and 1200 models. Prices usually run about $12 to $16.

Why It Works for Me

The smaller size suits the Sportster’s tighter layout, and the same 17mm nut design makes changes easy. I especially like this on bikes where the filter sits close to the exhaust or frame.

On a Sportster, I’ve found that anything that makes the job faster is a win. This filter does that.

Fitment Reminder

Sportster fitment can change across model years, and the newer Revolution Max bikes use a different setup entirely. Check your exact year and model before ordering.

5. Hiflofiltro HF171B — Best Budget Pick for Sportsters

The Hiflofiltro HF171B is the Sportster-sized sibling of the HF170B, and it’s the cheapest quality filter I’d put on my own bike. Most of the time I see it for about $8 to $11.

What You Get for the Money

The HF171B has a black finish, a durable can and a reliable anti-drainback valve. It’s easy to find online and at most powersports shops. For a rider who changes oil often, the savings really add up.

If you’re maintaining an older Sportster on a budget, this is a no-brainer.

Is It Worth Skipping the OEM?

In my experience, yes, as long as you buy from a reputable seller and confirm fitment. I’d still avoid anonymous no-name filters with unclear specs. Stick to known brands.

6. Harley-Davidson Genuine Chrome Oil Filter (63796-77A) — Best for Show-Bike Looks

If your bike is polished within an inch of its life, the Harley-Davidson Genuine Chrome Oil Filter is the one that belongs on it. It has the classic chrome canister that looks right on many Big Twin builds. Prices usually sit between $14 and $20.

Why Riders Choose It

Looks matter, and chrome fits the traditional Harley aesthetic. It still offers the proven filtration of an OEM part, so you aren’t giving up quality for style.

I’ve seen these on plenty of well-kept cruisers at bike nights, and they always look sharp.

The Trade-Offs

Chrome shows every oil smudge and fingerprint, so be ready to wipe it down. Also, this part number fits specific engines, not every modern Harley. Confirm compatibility before you buy.

How I Choose the Right Filter for My Harley

Start With Fitment

Harley filters are not one-size-fits-all. Big Twins, Sportsters and newer models can all use different parts. I check the owner’s manual and compare the part number against the manufacturer’s fitment chart.

Think About Ease of Service

If you do your own oil changes, a filter with a built-in nut can save time and frustration. If you prefer a clean OEM look, a cap wrench is a small investment. I keep both types of tools in my toolbox.

Match the Filter to Your Oil

A good filter and good oil work together. If you’re still deciding on lubricant, I put together a guide to the best oil for a harley davidson motorcycle. It covers viscosity and synthetic versus conventional.

For even more detail, I also wrote about what is the best oil for a harley davidson motorcycle, including how climate and riding style change the answer.

A Note on Oil Quality

Many riders also ask about general four-stroke oils. If you own other bikes too, take a look at this overview of the best motor oil for 4 stroke motorcycle options. You can also read this list of the top engine oil for 4 stroke motorcycle picks.

And if you ride or travel in warmer regions, here’s a helpful look at the best engine oil for 4 stroke motorcycle in india.

How to Change a Harley Oil Filter the Right Way

Step-by-Step

I always warm the engine for a couple of minutes first. Warm oil drains faster and carries more contaminants out with it. Then I drain the oil, remove the old filter, and wipe the mounting surface clean.

Next, I lightly coat the new filter’s gasket with fresh oil. I spin it on by hand until the gasket touches, then tighten it about 1/2 to 3/4 of a turn. Finally, I refill with oil, run the engine briefly, and check for leaks.

Mistakes I See Too Often

• Overtightening: It can damage the gasket and make removal a nightmare.
• Reusing the old gasket: Make sure the old gasket didn’t stick to the mounting surface.
• Skipping the oil on the gasket: A dry gasket can tear or leak.
• Ignoring the drain plug washer: Replace it if it’s crushed or worn.

Final Thoughts From My Garage

If I had to pick just one, I’d choose the genuine Harley-Davidson black filter for its guaranteed fit and consistency. When I want faster, easier service, I switch to a K&N. For stretching my budget, Hiflofiltro is hard to beat.

Whichever you choose, change it with every oil change and verify fitment first. A few dollars and a few minutes of care will protect an engine that deserves it. Ride safe, and keep that V-twin happy.

Frequently Asked Questions