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🌬️ Elevate your engine’s breathability—performance that’s impossible to ignore!
The K&N 33-2966 Replacement Air Filter in Heather Red is a direct-fit, reusable air filter designed to boost airflow and throttle response while maintaining MOT compliance. With a durable painted finish and easy installation, it offers up to 50,000 miles of cleanable performance, making it a smart, stylish upgrade for discerning drivers.











| ASIN | B003ITFAJG |
| Automotive Fit Type | Vehicle Specific Fit |
| Best Sellers Rank | 30,433 in Automotive ( See Top 100 in Automotive ) 178 in Car Air Engine Air Filters |
| Brand | K&N |
| Brand Name | K&N |
| Country Of Origin | USA |
| Customer Reviews | 4.8 out of 5 stars 602 Reviews |
| EU Spare Part Availability Duration | 10 Years |
| Fit Type | Vehicle Specific Fit |
| Fit type | Vehicle Specific Fit |
| Global Trade Identification Number | 00024844268464 |
| Included Components | Air Filter |
| Item Dimensions L x W x H | 17L x 105W x 116H millimetres |
| Item Shape | Panel |
| Item Type Name | K&N 33-2966 Replacement Air Filter |
| Item Weight | 0.63 Kilograms |
| Manufacturer | K&N |
| Manufacturer Part Number | 33-2966 |
| Model Number | 33-2966 |
| OEM Equivalent Part Number | 13272719, 13272720, 401558002695, 834121, 834126, 834132, A3144C |
| OEM part number | 13272719, 13272720, 401558002695, 834121, 834126, 834132, A3144C |
| Product Grade | Performance Part |
| Product dimensions | 17L x 105W x 116H millimetres |
| Product grade | Performance Part |
| UPC | 024844268464 |
L**I
Cool
Very good product. I recommend the seller. Fast delivery, everything as described. 100% satisfaction.
S**N
Buy it!
Was watching this item for a long time whilst it sat at around £55. Just picked it up on a deal at £41ish and instantly regretted not paying the higher price sooner. All in all, I'm chuffed with this filter. So, if I hammer it, I get worse mpg but better performance. That's fair and to be expected. But for everyday driving, I see massive gains in throttle response, and slight efficiency gains too which was a plesent surprise. It's been a while since I used a K&N filter and although throttle performance was a key driver in this purchase, my primary concern was impact to efficiency (mpg). As I had recently performed a full service on the car, I was able to directly compare a new OEM filter against the K&N. This is in no way scientific but here goes... Having the OEM installed and the drivetrain up to operating temps, I reset the trip computers and performed a 5.5 mile test on a quiet stretch of dual carriage way with the cruise control set to 70mph the entire time. The test included downhill and uphill sections of decent gradients as I wanted to test the engine when coasting as well as under load. After the OEM run, I immediately swapped to the K&N and performed the exact same test, maintaining the same conditions (weather, outside temp, no traffic, electrics such as radio and lights unchanged, everything but slightly less fuel). With the OEM filter, I achieved 52.1mpg With the K&N filter, I achieved 54.7mpg So, not a great improvement. But the main purpose of this test was to ensure no dip in efficiency under everyday commuting. However, this test ignores other benefits gained from having the K&N installed: - Under heavy load the car sounds a little more grunty. It's barely noticeable but it's still an improvement. - Throttle response has vastly improved. This was a big surprise to me. I was expecting some gains in this area but this filter has changed the car completely. I've lost a flat spot at the low end, turbo lag feels pretty much gone and the car generally feels more awake and in touch with what I'm asking of it. This is exactly what I wanted but didn't think was possible from a simple filter swap. Test engine: Vauxhall 2013 2.0CDTI (165)
D**O
perfect
if looking for extra air displacement and don't want an induction which in my experience can drag hot air as well as cold from engine bay this is way forward and not breaking mot rules as direct fit but allows so much more air , throttle response, I'm shocked coupled with a few other things people would be so worth the money. also you don't change them clean and re oil done. and instead of every service 50,000 miles or more clean. So much better in my opinion. mot take out put original in so no one takes it. but easy to fit .
O**Y
Quality air filter
Great product, installation was simple and easy to do. Quality product i would buy again if they weren’t re-useable
R**S
K&N filter
Perfect. K&N quality, a direct replacement for a standard air filter
J**H
Good air filters
Reusable air filters, allow more air to pass through than standard ones. Also doesn’t have to be replaced, but requires cleaning and relubing at some point.
A**F
Fits 2010 Astra 2.0L CDTI
I can confirm this fits Perfectly in a 60 plate (2010) Vauxhall Astra 2.0L CDTI and works great. I will not say it gives a huge performance or MPG boost, but it does help the engine breath better. I have an Auto box and it certainly revs higher now which I assume is the ECU detecting better airflow to the engine as a result of the high flow filter. This results in smoother acceleration as it does not change gear too early but keeps the power flowing.
P**W
It’s a good air filter....
This air filter made my car go 10000% faster. When I press the fuel peddle I hear the air being sucked into the air filter as it makes the way to the turbo on my Mini van as I zoom off. I added the free sticker to my back glass which added a additional 69,000 horse power to my zafira. It now has a theoretical top speed of 100,000 miles per hour, but I don’t have the nerve to try it!
J**H
Fit great
I've been using k&n air filters on my vehicles for years. This on is as high quality as any that I have used in the past. Being cleanable and reusable saves money in the long run.
A**U
bon filtre a air moteur FAM
Bon filtre de remplacement pour filtre d'origine, masi sur tout ces un K&N donc lavable
S**O
Excellent qualité.. je suis très content
Excellent qualité je suis très content
J**E
Buen producto
Se adapta perfectamente
M**O
Ottimo upgrade per Opel Astra J 2011
Ottimo prodotto, volevo prenderlo da tanto ma rimandavo sempre, sopratutto perché me ne ricordavo dopo aver già fatto il tagliando. A sto giro anche se l'ultimo tagliando è di 3000km fa ho deciso di sostituire il filtro comunque, è entrato alla perfezione nella mia Opel Astra J del 2011. La mia impressione è stata quella di miglior ripresa a bassi giri, vediamo in futuro.
Trustpilot
1 month ago
4 days ago