Sponsored

KN Filters for S650? Worth it over stock?

Eagle1*

Member
Joined
May 20, 2026
Threads
4
Messages
15
Reaction score
27
Location
Ohio
Vehicle(s)
2025 Mustang GT
KN is having a sale on their replacement air filters for the s650, I am wondering if any of you have tried them or are using them in your GT and wonder if they make much of a difference at all? Thanks...
Sponsored

 

Sig Oris

Well-Known Member
Joined
Sep 20, 2025
Threads
23
Messages
232
Reaction score
296
Location
Western Maine
Vehicle(s)
MY23 F150 PB Lariat & MY25 Mustang GT Convertible 60th #0807
KN is having a sale on their replacement air filters for the s650, I am wondering if any of you have tried them or are using them in your GT and wonder if they make much of a difference at all? Thanks...
N O P E

i installed one about a month ago.

remove the honeycombs in the OEM tubes and call it good
 

Achlys

Well-Known Member
Joined
May 31, 2026
Threads
5
Messages
69
Reaction score
118
Location
KC Metro
Vehicle(s)
2026 Mustang GT Premium 401A, A10, 3.55, AE, Bronco Sport Badlands Sasquatch
There are a few threads that address your question. With that, I’ve had my GT for about 10 weeks. I’ve had the stock filters, K&N, and Steeda with the Pro-flow intake. I prefer the look of the Steeda intake over the stock intake. Other than that there is very little felt difference. Save your dollars wear the stock filter out and then purchase a quality standard filter. Heck, there are several additions that can be made that can make life easier for less $. My 2 cents.
 

Wiley Marmot

Well-Known Member
Joined
Apr 27, 2024
Threads
77
Messages
1,272
Reaction score
1,727
Location
MI, USA
Vehicle(s)
2024 Mustang GT Prem
What Lou said. If it were me; I'd go to a life time dry filter (no oiling or cleaning) that had proven flow and filtration over OEM. Good luck with whatever you go with!
 


AZ_Ryan

Well-Known Member
Joined
May 31, 2016
Threads
34
Messages
3,663
Reaction score
5,061
Location
Arizona
Vehicle(s)
2024 GT Premium
K&N is trash for all the reasons stated above. Hard pass.

I personally stick with the factory filters as I live is a dusty climate and daily my car. If I wanted to upgrade, I would go with a quality dry filter.
 

MAT1955

Well-Known Member
Joined
Sep 1, 2024
Threads
26
Messages
1,066
Reaction score
1,508
Location
K6V4T5
Vehicle(s)
2024 Mustang GT
@ZXMustang ..... Roush sell super high quality filters that can be washed many, many times and they also send a technical sheet with them. I have used them. I think at one time AFE made them for Roush and still may. Waaaaay better than crap oiled filters.
 

DuckDodgersUK

Member
Joined
Jun 9, 2026
Threads
1
Messages
7
Reaction score
16
Location
UK
Vehicle(s)
Dark Horse
I’ve got K&N and removed the carbon traps. As long as you clean them yearly and re oil with the cleaning kit you’re fine

S650 Mustang KN Filters for S650? Worth it over stock? IMG_6586


S650 Mustang KN Filters for S650? Worth it over stock? IMG_6583
 
OP
OP
Eagle1*

Eagle1*

Member
Joined
May 20, 2026
Threads
4
Messages
15
Reaction score
27
Location
Ohio
Vehicle(s)
2025 Mustang GT
So, is that white plastic thing the honeycomb piece that I need to remove from the stock tube or something else?
 
 








Top