- Eureka Airspeed AS1000A
- Eureka Comfort Clean Upright 4326AZ
- Eureka 3276AZ, 3276AVZ, 3277AVZ, 3279AZ, 4235AZ, 4236AZ, 460AZ, SA3276AZ, UK4236AZ, & UK4237AZ
This is a replacement for:
- Eureka part nos. 67821, 68931, & EF91
Shipping Estimate
USA
- USA
- CAN
- USA
- CAN
Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
Promo Codes Available:
For Your Every Summer RSVP, with Code: SUMMER15
Description
Crucial Vacuum Air Filter Replacement - Compatible With Eureka Part # 67821, 68931, 68931A, EF91, EF-91, EF-91B, DCF-21, DCF21 - Models 4236AZ, 4235AZ, 4236AZ, SA3276AZ, UK4236AZ, UK4237AZCompatibility Part And Model Numbers Part And Model Number Search: Find out if your part number fits this item! Compatible PART numbers Eureka DCF21 67821 68931 68931A EF91 EF 91B Compatible MODEL numbers Eureka 4235 4235AZ 4236 4236AZ 4238 4238AZ 4239 Brand Name : Crucial Vacuum Keep your vacuum doing its job with a little help from us. Filters make sure the tiny stuff that doesn't stay in the dirt receptacle from spewing back out into the air. This
Compatibility Part And Model Numbers
Part And Model Number Search:
Find out if your part number fits this item!
Compatible PART numbers
Eureka
- DCF21
- 67821
- 68931
- 68931A
- EF91
- EF-91B
Compatible MODEL numbers
Eureka
- 4235
- 4235AZ
- 4236
- 4236AZ
- 4238
- 4238AZ
- 4239
Brand Name : Crucial Vacuum
Keep your vacuum doing its job with a little help from us. Filters make sure the tiny stuff that doesn't stay in the dirt receptacle from spewing back out into the air. This washable filter makes keeping your vacuum happy easy. Every four to six weeks (depending on how much you vacuum), rinse this filter with cool water and let it air dry. That five minutes will keep your vacuum in tip top shape and your air dust free.
Designed to fit:
Please note the following important information about this product from Think Crucial: (i) it is a generic replacement, NOT a Eureka® Original Equipment Manufacturer (OEM) product; (ii) because it is not a Eureka® OEM product, it is not covered by any Eureka® guarantee or warranty; (iii) use of this generic replacement may violate or void Eureka's® guarantee or warranty - it is entirely your responsibility to check, and entirely your risk if you decide to use this product; (iv) we do not guarantee or warrant that this generic replacement is compatible with any product from Eureka® or any other provider. Please check your manufacturer's warranty with regard to the use of non-OEM parts. Think Crucial provides no warranty or guarantee with regard to the product or its compatibility with your Eureka® product. The Eureka® brand and all Eureka® trademarks belong to Eureka® or its affiliates, and are used here only to explain the compatibility features of the generic replacement product.
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
- To process your return/exchange, please contact us at [email protected]
- Please click here for more details>>> Return & Exchange Policy
4.2 ★★★★★
Based on 1055 reviews
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Product Reviews
★★★★★ 5
Best air flow
Size: 9.6" x 11.1" x 2.2"
I have a 2022 ram 1500 four-door. The factory filter from the ram dealer is about $40 but it’s not reusable. That was the only one I found that had good airflow into the cabin. I tried several other brands but the airflow was reduced excessively. The ram filter was 15 mph, most of the other aftermarkets dropped the airflow to about 9 mph. I just installed a K&N reusable filter and the airflow is back up to 15 mph. Great job K&N!!
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Reviewed in the United States on March 27, 2026
★★★★★ 5
Fits Well and Reusable. I'm Happy.
Size: 9.6" x 11.1" x 2.2", Size: 9.6" x 11.1" x 2.2"
For less than the price of 2 disposable FRAM CV11671 cabin filters for my 2019 RAM 1500 and this will last forever. If it gets wet, like I've had happen with the paper throw-away filters due to stuff falling off trees in the spring and clogging cowl area water drains and backing up into filter ( yeah, that's a thing ) and can clean and dry this filter and reuse. Great directions came in the box along with a sticker to point out that this is a lifetime filter so someone doesn't throw it away. Do this yourself. Don't let some auto repair shop talk you into it. I was getting tires balanced recently and heard a quote they gave over the phone of $79 to do this. I don't know what kind of vehicle that was for but this ain't rocket science. Don't get ripped off. Now back to this filter. There is no arrow for air flow so I figure it flows well both ways and just put it in with the K and N logo right side up and facing out. It's not a straight in shot the way RAM positioned the opening for the cabin filter slot but was no big deal. Also realize this isn't a perfect square filter ...It's a rectangle so don't try to shove the fat end in and say it doesn't fit. I haven't noticed any air flow differences with the heating / ac system but some people say they do. I'm just happy I don't have to buy anymore disposable filters and can dry this if it gets wet. The cleaning and refresh spray kit is #99-6000 that comes with a 8oz and 12oz bottle and I'm trying to find that cheaper somewhere for when I do clean this thing.
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Reviewed in the United States on November 20, 2025
★★★★★ 5
Can’t go wrong with K&N
Size: 9.6" x 11.1" x 2.2"
So I recently took my pickup in to have some recall work done, half way through the process I got a call from the dealership stating I needed a new air filter and that a new one would cost nearly $60. I chuckled and told then to put the old one back in and I immediately came to Amazon and ordered this cabin filter. I’ve used K&N products in the past and have never been sorry, and that is the case with this lifetime filter. Upon installing this filter I noticed an IMMEDIATE difference in air flow into the cabin, it even smelled better. If this filter ever gets dirty Ira easy to clean and reinstall, paying for itself over time. Do yourself a favor and pick one of these up, you will not be sorry.
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Reviewed in the United States on October 20, 2025
★★★★★ 5
Perfect fit
Size: 9.6" x 11.1" x 2.2"
Perfect fit on my 2022 jeep wagoner
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Reviewed in the United States on May 20, 2026
★★★★★ 5
Fit my Subaru Forester perfectly!
This fit my 2024 Subaru Forester perfectly. The filters exhibited a high quality construction and was packaged well. Installation was easy and saved me a lot of $ vs. having my dealer install an OEM filter.
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Reviewed in the United States on December 16, 2025