John Deere releases 4.5l engine

27 Oct 2017
4.5l John Deere engine

The PowerTech's upgraded valve train delivers a 40% increase in power

John Deere Power Systems' new PowerTech 4045SFM85 4.5l engine offers more power and less weight than previous models.

The new PowerTech is designed especially for planing and semi-displacement hulls and has an M4 rating with 205kW at 2600 RPM and M5 rating with 235kW at 2800 RPM. With an upgraded valve train, it delivers a 40% increase in power and a 9% reduction in total engine weight for a 53% increase in power density compared to the 4045AFM85.

Type approval

The 4045SFM85 ratings will meet US Environmental Protection Agency Marine Tier 3 and Recreational Craft Directive II emissions regulations, as well as International Maritime Organization Tier II standards for commercial and recreational applications. The engine is pending approval by American Bureau of Shipping, DNV GL, Lloyd’s Register and Bureau Veritas and will be the only ABS-certified, 315 hp, 4-cylinder in-board diesel engine.

“We’re excited to offer type approvals for this power range in the near future,” said Heather Balk, marine market planner for John Deere Power Systems. “Type approvals offer piece of mind to boat owners that this new engine from John Deere will pass marine authority safety tests and design reviews.”

Turbocharger

The engine uses a waste-gated turbocharger that provides more torque capability at the low and middle RPM range, which is most notable during vessel acceleration, said John Dere. It also features replaceable cylinder liners, making it possible to rebuild the engine for extended service life.

The engine has standard front fuel service, optional left-hand or right-hand oil filter options for twin engine applications.

The low-profile heat exchanger reduces overall height by 1.7 inches from the 4045AFM85.

The PowerTec will be available for order in early 2018.