Reviews of K&N oil filter

PR Score ? Shows the percentage of positive votes. Learn more in the help

Based on

99 reviews and 305 votes

305 votes

Average rating ? The average rating is calculated only from review ratings, without votes
3.6
Smell/smoke:
3.7
Leaks:
3.1
Warning light:
3.3
66
8
25

99 reviews

Description
Rank #9

among 24 manufacturers

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K&N Oil filter

Personally I like K&N filters, they come with a nut welded to them so you can use a normal wrench instead of a filter wrench. Gotta be careful not to over tighten them though

Pros: nut welded to them
Cons: careful not over tighten
Vehicle: Subaru
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K&N Oil filter

I have a kn 1 on my truck and winter is about every 1k miles I empty it. Its the 6oz canister and usually about half full. From may till like October I dont even have to look in it because it doesnt get more than an oz of oil build up in it. But man winter time with the condensation sucks.

Pros: little oil build up
Cons: condensation sucks
Mileage: 1000 km
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K&N Oil filter
  • Warning light:
Rating 1.0

Not sure about mobil1 filters, but stay away from K&N oil filters. I've just used one for an oil flush after extensive maintenance work, and after just 100 km it had collapsed.

Cons: collapsed after 100km
Mileage: 100 km
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K&N Oil filter

That won’t happen if you were using a K&N oil filter. All these cheap brand filters are not sturdy and will collapse when you’re trying to take them off when stuck… either The Black K&N select filter or the white Premium filter will avoid this problem from happening…

Pros: sturdy, avoids collapsing
Cons: cheap filters collapse
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K&N Oil filter

K&N HP1002 because it has a hex on the end that makes taking it off through the wheel well really easy. Don't even have to jack up the car, just remove the rear splash guard.

Pros: easy to remove, hex end
Part number: HP1002
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What we know about K&N oil filter

Reviews of K&N oil filter

The brand is registered in USA. Official website: https://www.knluftfilter.com.

In March 2026, PartReview users have a mixed opinion of K&N oil filter.

PR Score — 70 out of 100, based on 99 reviews and 305 votes. 66 positive reviews, 8 neutral reviews, 25 negative reviews. Average rating — 3.6 (out of 5). Vote balance: 214 up, 91 down.

In the ranking of the best oil filter this part is at position 9, behind Mahle and AMSOIL , but ahead of OEM Mazda and OEM Honda.

Users also evaluated the qualities of K&N oil filter:

  1. Leaks - oil around the filter or on the ground, risking low oil - rated ambivalently. 3.1 points out of 5.
  2. Smell/smoke - burning oil odor or smoke if oil hits hot parts - rated positively. 3.7 points out of 5.
  3. Warning light - oil light flickers after a recent service, needs attention - rated ambivalently. 3.3 points out of 5.

Oil filter K&N in car-specific ratings

See which car brands and models owners choose K&N oil filter for. Below are car-specific ratings where this part is in the Top-3:

  1. K&N ranked #3 for: Subaru Outback .

Oil filter K&N in comparisons

There are 23 comparisons of K&N oil filter with other manufacturers on PartReview.

In particular, see which oil filter are better: K&N or MOTUL, OEM BMW or K&N, K&N or OEM FORD, LIQUI MOLY or K&N, K&N or STP .

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