cxo300 technical specificationpowersystems.ringpower.com/media/2535241/cox...jul 02, 2019 · type....

TYPE CXO300 DIESEL OUTBOARD ENGINE

YEAR 2019

CXO300

coxmarine.com

CXO300Technical Specification

CXO300Technical data

Engine designation CXO300

Crankshaft power, kW (hp) 252 (338)

Propeller shaft power, kW (hp) 224 (300)

Engine propping speed, rpm 3700-4000

Displacement, L (cu.in.) 4.4 (266)

Number of cylinders 8

Bore/stroke, mm (in.) 84 (3.3) / 98.5 (3.9)

Compression ratio 16

Ratio 1 (Propeller speed) 1.23:1 (3259)

Ratio 2 (Propeller speed) 1.46:1 (2739)

Peak torque, Nm (lb.ft) 650 (479)

Aspiration Twin-turbo

Shaft Length, inch(mm) 25”(635)/30”(762)/35”(889)

Emission compliance EPA 3, IMO 2, RCD 2

Start assist Glow plugs (optional)

Rating Light-duty commercial

Trim range -4° to +16°

Tilt range 71°

Engine oil spec API CI-4 / SAE 5W40

Gear oil spec API GL-5 / SAE 75W140

Propeller spline spec 1.25” shaft / 19 tooth

Colour options Black / White

CXO300 – 300HP diesel outboard coxmarine.com

CXO300 Technical Specification

CXO300Instruments and controls

CXO300Technical description

Engine block and head• Aluminium alloy block and heads• 60 degree V8

Engine mounting • Standard outboard fitting layout • 6-bolt mounting with multi-hole adjustment

Fuel system• High pressure common rail fuel injection• On-engine fuel filtration

Air inlet and exhaust system• Twin turbochargers• Air filters with replaceable inserts• Closed crankcase ventilation

Transmission• All outboards offer standard and counter rotating capability, programmable through the ECU

Cooling system• Thermostatically regulated raw water cooling• Tubular heat exchanger

Oil System• Oil cooler optional

Electric system• 12V/24V two-pole electrical system• 100A marine alternator• Idle speed output 40A• Max speed output 100A

Propeller• Maximum propeller diameter 16in• 19† 1.25 propeller spline

Instruments/control• Seastar electronic throttle• Seastar joystick• CoastKey keyless fob / wireless MOB technology• CAN J1939 Controls and Displays• Compatible with NMEA 2000• Murphy Powerview displays – 4.8”/7”/11”/12”• Compatible with all Seastar EPS steering



0 (0)

100 (74)

200 (148)

300 (221)

400 (295)

500 (369)

600 (443)

700 (516)

800 (590)

900 (664)

1000 1500 2000 2500 3000 3500

Torque at propsha - Nm (lb.)Torque at propsha - Nm (lb.)

1.23 ratio

1.46 ratio

0

10 (2.2)

20 (4.4)

30 (6.6)

40 (8.8)

50 (11.0)

60 (13.2)

70 (15.4)

80 (17.6)

1000 1500 2000 2500 3000 3500 4000

ISO E3/E5 fuel consumption - L/h (gal/h)

0

100 (74)

200 (148)

300 (221)

400 (295)

500 (369)

600 (443)

700 (516)

1000 1500 2000 2500 3000 3500 4000

Torque at cranksha - Nm (lb.)

0

50

100

150

200

250

300

350

1000 1500 2000 2500 3000 3500

Power at propsha (hp)

1.23 ratio

1.46 ratio

CXO300Power at Propshaft (hp)

CXO300Torque at Crankshaft Nm (lb.ft)

CXO300ISO E3/E5 fuel consumption (L/h) Fuel curve under ISO 8178 E3/E5 conditions

CXO300Torque at Propshaft Nm (lb.ft)



25” leg lengthDimensions – mm (in)

A 634 (25)B 1984 (78.1)C 151 (5.9)D 1201 (47.3)E 1297 (51)


A 761 (30)B 2111 (83.1)C 177 (7)D 1326 (52.2)E 1424 (56)


A 888 (35)B 2238 (88.1)C 204 (8)D 1450 (57.1)E 1551 (61)

CXO300 Technical drawing

CXO300Plan view /Transom interface

Dimensions - mm (in)



724 (28.5)(30” extended term)



Black finish

White finish

CXO300 Boat Rigging Schematic


July 2019 2.2 Cox Powertrain LtdPlease note that this Technical Specification is subject to change, and is not to be re-produced in any form without permission

More informationPlease contact your nearest Cox Powertrain distributor for more details about Cox diesel outboard engines.

Cox Powertrain Limited8 Cecil Pashley WayBrighton City AirportShoreham by Sea BN43 5FF United Kingdom

+44 (0)1273 454 [email protected] CoxPowertrain

coxmarine.com

cxo300 technical specificationpowersystems.ringpower.com/media/2535241/cox...jul 02, 2019 · type....

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