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🛵 Ride Clean, Ride Confident: The Filter Your Engine Deserves
The K&N KN-303 Motorcycle Oil Filter delivers premium filtration with a synthetic-blend media that removes harmful contaminants while maintaining exceptional oil flow. Designed for select Honda, Kawasaki, Polaris, and Yamaha motorcycles, it features a heavy-duty canister and a convenient wrench-off nut for easy installation and removal. Laboratory-tested for capacity and burst strength, this filter supports longer service intervals and is compatible with synthetic, conventional, and blended oils—ensuring durable, high-performance engine protection mile after mile.







| ASIN | B000E2CVIS |
| Automotive Fit Type | Universal Fit |
| Best Sellers Rank | 2,289 in Automotive ( See Top 100 in Automotive ) 2 in Motorbike Oil Filters |
| Brand | K&N |
| Brand Name | K&N |
| Compatible with Vehicle Type | Motorcycles |
| Country Of Origin | Switzerland |
| Customer Reviews | 4.7 out of 5 stars 9,998 Reviews |
| Global Trade Identification Number | 00024844084491 |
| Included Components | 1 Oil Filter |
| Item Dimensions | 28 x 39 x 28 millimetres |
| Item Type Name | K&N Powersports Oil Filter - Spin-On 66x83mm compatible with Kawasaki, Yamaha, Honda, Polaris (KN-303) |
| Item Weight | 0.25 Kilograms |
| Item dimensions L x W x H | 28 x 39 x 28 millimetres |
| Manufacturer | K&N Filters Ltd. |
| Manufacturer Part Number | KN-303 |
| Manufacturer Warranty Description | 3 Months |
| Material | Resin |
| Material Type | Resin |
| Model Number | KN-303 |
| Number of Items | 1 |
| OEM Equivalent Part Number | KN-303 |
| Outside Diameter | 2.59 Inches |
| Outside diameter | 2.59 Inches |
| Part Interchange Info | Replacement |
| Product Grade | Performance Part |
| Product grade | Performance Part |
| Thread Size | M20 X 1.5 |
| UPC | 024844084491 |
| Unit Count | 1.0 count |
| Vehicle service type | Motorcycles |
J**A
Good fit good price with nut attachment
Very good filter the fit is good (Make sure it will fit with the nut attachment it might come out to far if your bikes filter is in the front of engine hitting the downpipes.) the thread goes on nice and smooth. Great value for the money. The K&N filter has a white area on it which you can write on with permanent marker Mileage and date of oil change saves having to keep it written on paper some where. Had no issues since fitted, haven't removed yet as it is not due for oil change yet, but can't see any issues removing it having the nut attachment. I think the filter is a good price on Amazon and next day delivery can' beat it in my opinion. I would recommend this K&N filter good products. Hope this Helps
C**S
Awesome
Awesome. Straight onto my 2012 ER6n. Nice nut on the end to torque it to perfection, and take off with any adjustable spanner or socket down the line.
D**D
Great oil filters that are so easy to fit and replace because of the end nut.
I always use K&N oil filters on my Kawasaki Ninja1000SX, Quality is excellent and with the end nut they’re so easy to fit to the correct tightness and remove when replacing without needing a oil filter wrench. Also I’ve never had issues with air locks on K&N oil filters causing low oil pressure and then the need to burp the oil filter, an issue I’ve experienced with Kawasaki branded filters in the past. Highly recommended!
J**N
Good filter
Good quality filter with a bolt on the front to torque it up.
L**N
Recommend
Good price and fast delivery
D**S
Perfect fit for my vehicle.
K&N filters I've found to be always reliable. The supplied item fitted the bill. Perfect fit for my Honda Super Blackbird CBR1100XXV, I believe this filter will also fit other vehicles, just check the listing. Once of a day you'd probably find it necessary to use specialist tool to remove these from the vehicle. It appears they're now fitted with a hexagon nut so you can use a standard spanner to remove the filter once fitted, so now you'll find it easy! Just make sure you fit the filter correctly BY HAND, DON'T use a spanner. Make sure you follow the instuctions and use a smear of oil when fitting your filter, as they tend do to tighten themselves over time due to expansion and contraction.
D**T
The top nut's nuts
I'd forgotten I put one of these on my bike 8 years ago and then pretty much stopped using it. Having the top nut on it made it so easy to remove and replace. I've installed another K&N oil filter so its going to be easy next time too.
R**K
K&N Quality
Great quality oil filter! I’ve used K&N products before, and this one didn’t disappoint. It feels solid, fits perfectly, and works exactly as expected. My bike runs smoothly and I trust the filtration performance. I would absolutely buy this filter again.
M**E
Great looks and appears high quality
I wouldn’t buy a filter based on looks or ease of installation, but I do enjoy both aspects. That 17mm he’s on the back works so good. I usually go hand tight on filters and the hex makes it easier to fine tune that. I always used OEM filters until Honda started making them stupid. My last OEM filter bottomed out just as the o-ring made contact. Obviously they cheapened out and changed the design. Enter this filter. It appears well made and installed the way it should.
M**.
Funciona para r6 2004
Le quedo perfecto a una R6 2004 excelente producto y calidad
A**R
K&N , dus altijd goed
Prima filters, zoals ik ze al jaren koop. De steeksleutel aansluiting maakt het wisselen mogelijk bij mijn motor zonder het kuipwerk te moeten demonteren. Gebruik gemaakt van een aanbieding, dus voorlopig weer voorraad voor de vloot :)
A**D
Great Product
Value for money, very good product. Thanks
G**5
Passt!
Guter Ölfilter
Trustpilot
2 days ago
1 month ago