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Kohler KD45V20 Engine

Name: Kohler KD45V20 Engine
Brand: Kohler

The Kohler KD45V20 is a 45 L 20-cylinder turbocharged engine rated at 1500 rpm, producing up to 1910 kW. It powers generator sets from Kohler, including the GMKD1750, KD1500, KD1600 and KD1750. It holds 45 L (11.9 gal) of oil and 45 L (11.9 gal) of coolant.

Also known as: KOHLER KD45V20

45.0 L

Displacement

Cylinders

1500 rpm

Rated speed

1910 kW

Gross power

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Engine specifications

Oil capacity	45.0 L
Coolant capacity	45.0 L
Displacement	45.0 L
Cylinders	20
Aspiration	Turbocharged
Rated speed	1500 rpm
Gross power	1910 kW

Generator sets powered by this engine

Kohler GMKD1750 Kohler KD1500 Kohler KD1600 Kohler KD1750 Kohler KD45V20

How to read your Kohler engine serial & model number →

Common problems

APM INTERNAL power BATTERY WARNING M3.212

Compiled from service & troubleshooting documentation across every generator set that uses the Kohler KD45V20.

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Air filter	Full Pressure		10801001001		Amazon $100.01 eBay
Fuel filter	main		230510004	1000 hr	Amazon eBay $40.00
Oil filter			230510001	250 hr	Amazon $120.65 eBay $40.80
Battery	4, 1110, AGM		—
Belt	V-ribbed fan belt		—	3000 hr
Coolant	SI-OAT or hybrid technology with ethylene glycol	143.0 l	—	6000 hr
Oil		180.0 l	—	250 hr

Pooled from every document that names this exact engine — confirm the interval and part number against your unit's serial number.

Service specifications

Type	Item	Value	Unit
Other	10 in. weld flange bolt circle diameter B	361.95	mm (14.25 in.)
Other	10 in. weld flange outside diameter C	406.4	mm (16.0 in.)
Other	10 in. weld flange quantity of bolts / bolt hole diameter D	12, 25.40	mm (1.00 in.)
Other	12 in. weld flange bolt circle diameter B	431.80	mm (17.00 in.)
Other	12 in. weld flange outside diameter C	482.6	mm (19.0 in.)
Other	12 in. weld flange quantity of bolts / bolt hole diameter D	12, 25.40	mm (1.00 in.)
Other	14 in. weld flange bolt circle diameter B	476.25	mm (18.75 in.)
Other	14 in. weld flange outside diameter C	533.4	mm (21.0 in.)
Other	14 in. weld flange quantity of bolts / bolt hole diameter D	12, 28.58	mm (1.13 in.)
Other	16 in. weld flange bolt circle diameter B	539.75	mm (21.25 in.)
Other	16 in. weld flange outside diameter C	596.9	mm (23.5 in.)
Other	16 in. weld flange quantity of bolts / bolt hole diameter D	16, 28.58	mm (1.13 in.)
Other	18 in. weld flange bolt circle diameter B	577.85	mm (22.75 in.)
Other	18 in. weld flange outside diameter C	635.0	mm (25.0 in.)
Other	18 in. weld flange quantity of bolts / bolt hole diameter D	16, 31.75	mm (1.25 in.)
Other	20 in. weld flange bolt circle diameter B	635.00	mm (25.00 in.)
Other	20 in. weld flange outside diameter C	698.5	mm (27.5 in.)
Other	20 in. weld flange quantity of bolts / bolt hole diameter D	20, 31.75	mm (1.25 in.)
Other	5 in. weld flange bolt circle diameter B	215.90	mm (8.50 in.)
Other	5 in. weld flange outside diameter C	241.30	mm (9.50 in.)
Other	5 in. weld flange quantity of bolts / bolt hole diameter D	8, 22.23	mm (0.88 in.)
Other	6 in. weld flange bolt circle diameter B	254.0	mm (10.0 in.)
Other	6 in. weld flange outside diameter C	279.4	mm (11.0 in.)
Other	6 in. weld flange quantity of bolts / bolt hole diameter D	8, 22.23	mm (0.88 in.)
Other	8 in. weld flange bolt circle diameter B	298.45	mm (11.75 in.)
Other	8 in. weld flange outside diameter C	342.9	mm (13.5 in.)
Other	8 in. weld flange quantity of bolts / bolt hole diameter D	8, 22.23	mm (0.88 in.)
Other	Weld flange angle A (10, 12, 14 in. nominal pipe size)	30	deg.
Other	Weld flange angle A (16, 18, 20 in. nominal pipe size)	22.5	deg.
Other	Weld flange angle A (5, 6, 8 in. nominal pipe size)	45	deg.

Extracted from the manufacturer documentation linked to this model. Values are copied as printed; confirm against your unit's manual and serial number.

Common questions

What is the oil capacity of the Kohler KD45V20?

The Kohler KD45V20 engine has an oil capacity of 45.0 liters.

What is the displacement of the Kohler KD45V20?

The Kohler KD45V20 has a displacement of 45.0 liters with 20 cylinders.

Which generators use the Kohler KD45V20 engine?

The Kohler KD45V20 powers 5 generator set(s), including Kohler GMKD1750, Kohler KD1500, Kohler KD1600, Kohler KD1750, Kohler KD45V20.

How often should you change the oil in the Kohler KD45V20?

The Kohler KD45V20 oil change interval is every 250 hours.

What is a common problem with the Kohler KD45V20 engine?

A commonly reported issue on generators using the Kohler KD45V20 is: APM INTERNAL power BATTERY WARNING.