HKS RS US CIVIC Si

Marsoni

M251S

$253.00

Get it in 3 business days with 1 day shipping. Friday, May 29

HKS RS US CIVIC SiSKU: 70020 KH101 UPC: 4957266275542 HKS Racing Suction Intake Kit 2017 2021 Honda Civic Si The HKS Racing Suction (RS) intake kit replaces the factory airbox on 2017 2021 Honda Civic Si models with a high flow dry filter and large diameter aluminum pipe. This setup draws in cooler, denser air to support the 1. 5L turbo engine for quicker throttle response and measurable power gains across the RPM range. Engineered for direct bolt on fitment, it

Easy Shipping

Quick Dispatch:

Your HKS RS US CIVIC Si orders ship within 1-2 business days.

Delivery Options:

Standard: 3-7 business days
Fast: 2-3 business days
Express: 1-2 business days

Order Tracking:

You'll receive a tracking link by email once your HKS RS US CIVIC Si ships.

Need Help?
Questions about HKS RS US CIVIC Si, sizing, or delivery? We're just an email away.

Live Shipping Estimates:
Enter your location at checkout to see available shipping methods and costs for HKS RS US CIVIC Si in your area.

Get Shipping Estimates

Country Zip/Postal Code

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

Item Reviewed: CF10134 Cabin Air Filter with Activated Carbon Replacement for CP134, Fit for Honda Accord/Civic/Odyssey/CR-V and Acura MDX/TSX/TLX/RDX/Ridgeline (2 pack) ℹ️ Summary I picked these up because I needed some replacement cabin air filters for my 2008 Honda Civic. These seem like decent quality and they were a perfect fit in my car. For $15 at time of order for two air filters it was a solid deal that I can glad recommend to others. I hate writing short reviews, but there’s not much else to say about these. Here is how I rate items: 5 ⭐️ = Completely exceeds expectations. 4 ⭐️ = Works well with minor concerns. 3 ⭐️ = Does the job, nothing special. 2 ⭐️ = Some things work, but lots of issues. 1 ⭐️ = Didn’t work well, not worth it.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on September 30, 2025

TLau

New York, US

★★★★★ 4

Good fit for Acura MDX

Size: 8.8" x 9.3" x 1.1"

This is an air cabin filter that will fit many cars, and in my case a 2019 MDX. Since this kind of filter is not doing anything critical like keeping dirt out of an engine, I shop around for non-OEM filters for something that strikes a balance between price versus performance. This filter just filters out dust in a car cabin, and when we’re not in our cars, we don’t have the benefit of an air filter when we are walking around outdoors. At a fraction of the price of an Acura filter, this filter seems to strike that balance. The filter media looks sturdy and is embedded with charcoal to help absorb odors. Installation is very straightforward in my MDX, and similar in most cars. There is a compartment door inside the glovebox that first must be removed before changing the filter. Pay attention to the direction flow arrow that shows which way the filter should be installed. Overall I am satisfied with this filter. It is inexpensive, fits perfectly, and seems to do the job just fine. It is definitely worth trying if you are trying to save money.

WAS THIS REVIEW HELPFUL?YesReportShare

Reviewed in the United States on October 12, 2024