Malibu Boats Monsoon Engines awarded highest emission rating

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The level five “extremely clean” rating means the M5Di and M6Di produce the lowest emissions in the industry.

The level five “extremely clean” rating means the M5Di and M6Di produce the lowest emissions in the industry.

Malibu Boats’ new Monsoon M5Di and M6Di engines achieved the highest certification through the California Air Resources Board. The level-five “extremely clean” designation gives the M5Di and M6Di the lowest emissions rating possible.

“Direct-injection technology and the design of our exhaust with a three-way catalyst has allowed us to be able to calibrate to lower emissions than ever before,” said Malibu drivetrain lead engineer Scott Peterson in a statement. “We also have the only fully integrated heat exchanger in the industry, which includes the oil filter, transmission cooler and heat exchanger all on the closed-cooled circuit. This makes for unmatched durability in brackish or salt water and lower engine temperatures for better efficiency.”

Level-five emissions are at least 50 percent lower than the four-star “super ultra low” rating.

Malibu said it was able to achieve this by taking its engine production in-house; the company has a 70,000-square-foot engine manufacturing and-test facility next to its boatbuilding plant. Malibu says this allows it to control the entire process from start to finish.

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