SMX Custom 2.75″ Air Filter Kit for 4LHA Yanmar & Others

Description

Seaboard Marine hooked up with S&B Filters to develop our own line of filters to fit the most popular marine diesel engines in the world, the Cummins B & C Series marine diesels. About 20+ years ago we got tired of dealing with paper-based air cleaners from Fleetguard and Donaldson. These filters were high quality air cleaners that were developed for trucks and off-road equipment that did a great job protecting the engines from inhaling dust, dirt, etc. in the worst of environments, except one: The MARINE ENGINE ROOM, where humidity can be close to 100%, temperatures can easily exceed 100°F, and “flying salt water mist” can be the norm. There’s just no way any type of paper, or even treated paper air filters, can be effective in this type of environment.

S&B Air Filter Installation on a Cummins Marine DieselAfter doing some extensive research, and then adding to that my off-road motorcycle experience, it was pretty simple to figure out that there was something better to use in a wet engine room with high performance diesels, where “dust” is not the only thing to worry about. We looked at oiled foam air cleaners and products made by K&N that was a promoter of cotton fabric oil-laced based air cleaners.

We decided to get some samples, do some testing, and thought we had come up with a better mousetrap for the marine market. After a couple of years in the field, we saw many issues with adapting K&N filters to the rugged marine environment and engines with boost numbers in the 25-30+ PSI range. We called them, spoke with their engineers and asked if they could make some changes in their rubber molding designs and develop some new sizes specific to our needs. In a nutshell, they weren’t interested in a little guy trying to develop something for a nitch market.

S&B Air Filter Installation on a Cummins Marine Diesel Ultimately, after more research and finding a couple of guys who had formed their own company called S&B (they used to work for K&N) we found out that they were very interested in working with Seaboard and made it easy for us to make some small changes to their base designs that allowed us to make what we believe is the best air filtration system on the market today for the very high performance engines in the 60 HP+/liter range operating in a nasty hot & humid “saltwater wet” engine room.

Our custom Seaboard Marine / S&B Filter Kits outperform any conventional paper-type air filter in any type of certified test cell designed for this purpose.