Volvo Penta builds the 3.7-liter D4 (150 to 320 hp) and the 5.4-liter D6 (300 to 480 hp) diesel engines for marine duty, rather than marinizing truck engines. Both offer the long-heralded Volvo Penta ...

Volvo Penta’s EVC electronic throttle-and-shift enables easy control of the D6 diesel DPI marine power system. Courtesy Southport Boats. The biggest issue that ­saltwater boaters have with sterndrives ...

Volvo Penta is now offering factory-built keel-cooled engines for the entire line of marine commercial inboard and sterndrive D4 3.7-liter and D6 5.5-liter engines.