


AEM 17-18 C.A.S Subaru Impreza L4-2.0L F/I Cold Air Intake
Marsoni
M251S
Get it in 3 business days with 1 day shipping.
Friday, May 29
AEM 17-18 C.A.S Subaru Impreza L4-2.0L F/I Cold Air IntakeAEM AEM 21 846C Cold Air Intake System: 21 846C. AEM's Performance Cold Air Intake Systems are designed, tuned and dyno tested to give your engine more power and acceleration by replacing the restrictive factory air filter, air intake tubing and air box assembly. Air Box Included: No Air Filter Color: Red Air Filter Material: Non woven Synthetic Air Filter Outlet Shape: Round Air Filter Washable: Yes California Restricted: Not legal for sale or use in
Quick Dispatch:
Your AEM 17-18 C.A.S Subaru Impreza L4-2.0L F/I Cold Air Intake orders ship within 1-2 business days.
Delivery Options:
- Standard: 3-7 business days
- Fast: 2-3 business days
- Express: 1-2 business days
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You'll receive a tracking link by email once your AEM 17-18 C.A.S Subaru Impreza L4-2.0L F/I Cold Air Intake ships.
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
- Final sale items are not eligible for returns or exchanges.
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4.6 ★★★★★
Based on 459 reviews
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Product Reviews
★★★★★ 5
Great quality and cost effective!
Color: CA12061
My mechanic says this is a great filter. They installed free (30 seconds) whereas Honda wanted $150 plus labor is it to install theirs. 🙄
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 29, 2026
★★★★★ 5
Inexpensive alternative to dealer
Color: CA12061
Fits perfect!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 4, 2026
★★★★★ 5
Top Shelf Quality!
Color: CA12061
This is superior to the OEM filter the Ridgeline comes with and at a significantly lower price than Honda will charge you for the replacement.
This arrived promptly, packaged securely, fit precisely and by the time I'm getting around to this review, I've already driven 6-7,000 miles and I recently checked it out- perfect! I usually change these out around 7-8,000 miles and this filter is doing exactly what it's supposed to do and frankly, I think it will easily go 15,000 miles before needing replacement. IMHO, this is far superior to the Honda OEM air filter. This is a great filter and you won't be disappointed.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 18, 2025
★★★★★ 4
Good quality, but could fit more snug in filter compartment.
Color: CA12061
Appears to be good quality material. It fits the model of car I bought it for, 2016 Honda Pilot, however it does not fit as snug as the other filter did. The dimensions could be improved a little, but I don't believe there is a gap along the end to allow anything to get by.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 11, 2022
★★★★★ 5
Durable air filter
Color: CA12061
Great reviews so I purchased this for my 21 Acura TLX. This was the first time I changed the filter on my car. Very durable and thick, so far so good. It was super easy to install, don’t see much of a change in fuel usage but that wasn’t a concern. Great value for money will buy again.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 14, 2025
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