Volvo D13

{{Infobox engine

|name = Volvo D13

|image = Volvo D13 Euro 6.jpg

|image_size =

|alt = Volvo D13 engine on a display stand at an industry trade show. The blue engine block contrasts with various white accessories, black hoses and wires, and a silver engine valve cover

|caption = Volvo D13 engine

|manufacturer = Volvo

|designer =

|aka =

|production =

|configuration = I6

|displacement = {{cvt|779.7|cuin|L|1|order=flip}}{{cite web |url=https://www.volvotrucks.us/media/vtna/files/shared/powertrain/revised4147-101-volvo-d13-engine-brochure-low-res.pdf |title=Volvo D13 Engine Family |publisher=Volvo Trucks |date=2016 |access-date=25 March 2025}}

|bore = {{cvt|131|mm|in|2}}

|stroke = {{cvt|158|mm|in|2}}

|block = cast iron

|head = cast iron, one piece

|valvetrain = 4V / OHC

|timing =

|compression = 17:1

|idle =

|redline = 2100 RPM

|operating principle =

|supercharger =

|turbocharger = sliding nozzle variable geometry

|turboboostpressure =

|fuelsystem = common rail

|management =

|fueltype = ultra-low sulfur diesel

|oilsystem = SAE 10W-30, {{cvt|36|L|USqt}}

|coolingsystem =

|power = {{cvt|375–500|hp|kW PS|order=flip}}

|specpower =

|torque = {{cvt|1450–1850|lbft|Nm|order=flip}}

|length =

|width =

|height =

|diameter =

|weight = {{cvt|1182|kg}}

|emissions level = {{ubl|

• Euro II / IIIA / IV / V
• EPA Tier 2 / 3 / 4f}}

|emissions control =

|predecessor =

|successor =

}}

The Volvo D13 is a turbo diesel engine family manufactured by Volvo which shares a four-stroke, inline-six design with a nominal engine displacement of {{cvt|780|cuin|L|1}}. On-road versions are available for use in heavy-duty vehicles, including semi-trailer trucks and motorcoaches, and off-road versions are available from Volvo Penta, including stationary industrial uses such as power generation and marine powerplants. The rated output power varies from {{cvt|375|to|500|hp|kW PS}}, depending on the model.