Home›Engines›Kohler KD1250-A

Kohler KD1250-A Engine

Name: Kohler KD1250-A Engine
Brand: Kohler

The Kohler KD1250-A is a 12.5 L 6-cylinder turbocharged engine rated at 1500 rpm, producing up to 1250 kW. It powers generator sets from Kohler. It holds 100 L (26.4 gal) of oil and 1000 L (264.2 gal) of coolant.

Also known as: KOHLER KD1250-A

12.5 L

Displacement

Cylinders

1500 rpm

Rated speed

1250 kW

Gross power

On this pageSpecs Generator sets Maintenance FAQ Torque & specs

Engine specifications

Oil capacity	100.0 L
Coolant capacity	1000.0 L
Displacement	12.5 L
Cylinders	6
Aspiration	Turbocharged
Rated speed	1500 rpm
Gross power	1250 kW

Generator sets powered by this engine

Kohler KD1250-A

How to read your Kohler engine serial & model number →

Maintenance schedule

Item	Spec	Capacity	Part #	Interval
Fuel filter	Kohler		KH03850TO4D	500 hr	Amazon eBay
Oil filter	Kohler		KH05520TO4D	500 hr	Amazon eBay
Battery	Kohler		KH04920TO4D	1000 hr	Amazon eBay
Belt	Kohler		KH06810TO4D	1000 hr	Amazon eBay
Coolant	Kohler	1000.0 L	KH04590TO4D	1000 hr	Amazon eBay
Oil	10W-30	100.0 L	KH04830TO4D	200 hr	Amazon eBay
Spark plug	Kohler		KH05740TO4D	1000 hr	Amazon eBay

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 KD1250-A?

The Kohler KD1250-A engine has an oil capacity of 100.0 liters.

What is the displacement of the Kohler KD1250-A?

The Kohler KD1250-A has a displacement of 12.5 liters with 6 cylinders.

Which generators use the Kohler KD1250-A engine?

The Kohler KD1250-A powers 1 generator set(s), including Kohler KD1250-A.

How often should you change the oil in the Kohler KD1250-A?

The Kohler KD1250-A oil change interval is every 200 hours.