CSF BMW Gen 1 B58 Charge-Air-Cooler Manifold - Machined Billet Aluminum

CSF BMW Gen 1 B58 Charge-Air-Cooler Manifold - Machined Billet Aluminum

Marsoni

M251S

$1997.50

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

CSF BMW Gen 1 B58 Charge-Air-Cooler Manifold - Machined Billet AluminumThe CSF Manifold is made from Billet Aluminum and 100% TIG Welded for strength, which allows it to be able to withstand higher boost pressures compared to the OEM plastic manifold. Aluminum has higher thermal conductivity than plastic resulting in a higher rate of heat transfer between the cylinder head and manifold. Adding the Thermal Rejection Spacer reduces heat transfer between the two metal components (cylinder head & manifold). The spacer

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My mileage on my 2021 Honda CRV dropped 4 miles /gallon with this air filter. It did fit well and was easy to install, but then I watched my average around town mileage drop from 29-31mpg to 26-27 mpg thru 2 tank fillups. The Honda repair person said this filter looked like the Honda one and was surprised when we wanted to switch it out. Granted, it looked just like the Honda filter, but the folds on the Honda one are yellowish and I have to think there has to be some difference in the texture. The average mileage went back up within 10 miles of replacing it and 3 fill ups later it has continuously maintained its original average of 29-31 with the Honda filter.

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Reviewed in the United States on February 14, 2024

Verified Purchase

Randy Shiverdecker

Birmingham, US

★★★★★ 5

As good as Original Manufacturer Equipment.

Size: (Pack of 1)

Cheaper than having the dealer or oil change store do it. Only takes a minute to replace your existing filter for a lot less than what they want to charge you. High quality too!

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Reviewed in the United States on January 9, 2026

Verified Purchase

Emmanuel C.

Omaha, US

★★★★★ 5

Excellent Honda Alternative

Size: (Pack of 1)

I try to get everything and to keep everything as a manufacturer original on a car as possible. I will say that this filter is just as good as the Honda. The installation was very simple, you just need a screw driver to unscrew the 4 screws in the air box and this sits right in. The engine ran better and immediately got so much better MPG. I did not notice the engine struggling for air at all, if anything the car ran better. The fitment was the same size and just as good as the Honda. P.S Don't be like me. Don't hesitate to buy it. You'll love it. No questions asked!

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Reviewed in the United States on August 31, 2025

Verified Purchase

Anita

Los Angeles, US

★★★★★ 5

Perfect it for my 2022 Honda CRV

Size: (Pack of 1)

According to the Honda dealership, my 2022 Honda CR-V needed a replacement air filter. I watched a few YouTube videos to see how difficult the installation would be, and it looked quite simple. I researched online and found the Ecogard Premium Air Filter on Amazon, which had very good reviews. As a woman with no mechanical experience, I was surprised to find that it took me less than 10 minutes to install the new filter. It fit perfectly, and I saved money by purchasing it from Amazon and doing the installation myself. The Honda dealer would have charged me over $100 just for the installation. I highly recommend the Ecogard Premium Air Filter for a 2022 Honda CR-V.

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Reviewed in the United States on January 3, 2025

Verified Purchase

yahuayna

Pawtucket, US

★★★★★ 5

Will see

Size: (Pack of 1)

Fits perfect size

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Reviewed in the United States on April 3, 2026