CSF G8X M3/M4/M2 High Performance Engine Oil Cooler

CSF G8X M3/M4/M2 High Performance Engine Oil Cooler

Marsoni

M251S

$299.50

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

CSF G8X M3/M4/M2 High Performance Engine Oil CoolerWhen designing this new cooler, CSF wanted to ensure the best possible performance with factory like fitment. This oil cooler is a truly unique design using CSF's AC Condenser Technology. The 1 Row Super High Pressure 32mm 10 Channel Microtube provides optimal oil flow and maximum surface area contact. By keeping the factory mounting location and relative dimensions, the factory ducting and shrouds are all reused with no modifications necessary. In

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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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As another reviewer pointed out, the OEM paper filter is almost 3 times thicker than this one. All things equal, thicker would mean for filtering surface area. So with less filter media surface area, the filter would clog up quicker. However, since this is washable, maybe that's a moot point. I also noticed on my Hyundai Tucson, the rim of this filter must be slighter thicker because I had a tougher time clipping the filter box closed with this one installed. I am keeping my OEM for now, just in case.

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Reviewed in the United States on December 6, 2025

Verified Purchase

Nasir A.RAHMAN

Birmingham, US

★★★★★ 5

PhilTop engine filter 1/2 the price of K&N filter No difference

Not much difference than K&N filter But 1/2 the price 100% identical

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Reviewed in the United States on April 17, 2026

Verified Purchase

Julie

Chelsea, US

★★★★★ 5

Perfect fit for my 2018 Civic—easy, affordable, and worth it

Size: 9.5" x 10.9" x 2.1"

I’ve bought this cabin air filter multiple times for my 2018 Honda Civic, and it’s consistently great quality. It fits perfectly and is super easy to install—takes just a few minutes to swap out, and I always do it myself. Way cheaper than going to a shop or dealership. The airflow is smooth, there’s no smell at all, and it keeps the inside of my car feeling clean and fresh. No weird odors, no dust blowing in—just a solid, dependable filter that does its job well. This is the only one I’ll keep buying.

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Reviewed in the United States on May 11, 2025

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Michael Howard

Lexington, US

★★★★★ 5

Do it mayne

Size: 9.5" x 10.9" x 2.1"

Good quality and fit but find it funny that the instructions with the air flow are on the side. I assume that would be facing out and was annoyed when I tried to close and it didn’t fit. Probably should have read the directions. Still would recommend

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Reviewed in the United States on March 8, 2026

Verified Purchase

Kcfangue

New York, US

★★★★★ 5

Perfect fit, durable and affordable

Size: 9.5" x 10.9" x 2.1"

Ordered this for our 2023 Honda civic. Great fit, durable and very affordable. Was so easy to pull old one out and replace new one. Will be ordering again.

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Reviewed in the United States on November 3, 2025