Kohler Engine Spec Number Chart(For ALL Models)

One of the most important identifiers on a Kohler engine is the spec number, which provides detailed information about the specific configuration of an engine. Understanding this number is essential for getting the right parts, performing maintenance, and troubleshooting.

In this post, we’ll break down the Kohler engine spec number, provide a detailed Kohler engine spec number chart, and explain how to use this information to identify your engine and its parts.

Kohler Engine Spec Number Chart

Engine Series	Model	Spec Number Range	Displacement (cc)	Engine Type	Fuel Type	Common Applications
Command PRO	CH260	1000–1099	173	Single-cylinder OHV	Gasoline	Tillers, small generators
Command PRO	CH395	1100–1199	277	Single-cylinder OHV	Gasoline	Walk-behind mowers, pressure washers
Command PRO	CH440	1200–1299	429	Single-cylinder OHV	Gasoline	Construction tools, concrete saws
Command PRO	CH960	3900–3999	999	V-Twin OHV EFI	Gasoline	Commercial zero-turns, stump grinders
Command PRO EFI	ECH630	8000–8099	674	V-Twin EFI	Gasoline	High-efficiency commercial mowers
Command PRO EFI	ECH749	8200–8299	747	V-Twin EFI	Gasoline	Ride-on and utility equipment
Command PRO EFI	ECV850	8600–8699	852	V-Twin EFI, Vertical	Gasoline	Zero-turns, heavy-duty vertical applications
Command PRO EFI	ECV940	8700–8799	999	V-Twin EFI, Vertical	Gasoline	Turf and industrial machinery
Confidant	ZT710	5100–5199	725	V-Twin OHV	Gasoline	Light commercial zero-turn mowers
Confidant	ZT740	5300–5399	747	V-Twin OHV	Gasoline	Residential and commercial mowers
Courage XT	XT650	1500–1599	149	Single-cylinder OHV	Gasoline	Push mowers
Courage XT	XT675	1600–1699	149	Single-cylinder OHV	Gasoline	Walk-behind mowers
Courage	SV530	2400–2499	535	Single-cylinder OHV	Gasoline	Lawn tractors
Magnum	M20	4100–4199	747	V-Twin	Gasoline	Garden tractors, utility machines
K-Series	K241	700–799	391	Single-cylinder	Gasoline	Older riding mowers and tractors
K-Series	K321	800–899	512	Single-cylinder	Gasoline	Classic small tractors
K-Series	K181	600–699	305	Single-cylinder	Gasoline	Older small tractors, generators
K-Series	K582	900–999	946	V-Twin	Gasoline	Industrial equipment, large tractors
K-Series	K141	500–599	231	Single-cylinder	Gasoline	Older small engines, pumps
K-Series	K301	750–799	476	Single-cylinder	Gasoline	Garden tractors, utility vehicles
Diesel Series	KD15-440	9200–9299	441	Air-cooled Diesel	Diesel	Compact commercial machinery
Diesel Series	KDW1003	9500–9599	1028	Liquid-cooled Diesel	Diesel	Agricultural, construction, utility
Diesel Series	KDW1404	9800–9899	1372	Liquid-cooled Diesel	Diesel	Construction, agricultural equipment
Diesel Series	KDI2504M	9700–9799	2504	4-cylinder Diesel	Diesel	Marine, industrial applications
Diesel Series	KDI1930M	9600–9699	1930	3-cylinder Diesel	Diesel	Marine, agricultural equipment
Diesel Series	KDI3404M	9900–9999	3404	4-cylinder Diesel	Diesel	Heavy industrial, marine applications
Diesel Aegis	LV625	9000–9099	625	Liquid-cooled Diesel	Diesel	Industrial and municipal machines
7000 Series	KT610	7000–7099	597	V-Twin OHV	Gasoline	Riding mowers, zero-turns
7000 Series	KT715	7100–7199	725	V-Twin OHV	Gasoline	Residential zero-turn mowers
7000 Series	KT735	7600–7699	725	V-Twin OHV	Gasoline	Premium home and estate tractors
7000 Series PRO	KT745	7500–7599	747	V-Twin OHV PRO	Gasoline	High-end residential & light commercial use
RH Series	RH265	1300–1399	196	Horizontal OHV	Gasoline	Pressure washers, pumps
SH Series	SH265	1400–1499	196	Horizontal OHV	Gasoline	Snow blowers, augers
3000 Series	SH255	1700–1799	196	Single-cylinder OHV	Gasoline	Small utility equipment, pumps
Command PRO	CH1000	4000–4099	999	V-Twin OHV	Gasoline	Commercial mowers, heavy-duty equipment
Command PRO	CH730	3200–3299	725	V-Twin OHV	Gasoline	Zero-turn mowers, commercial tractors
Command PRO	CH680	3000–3099	674	V-Twin OHV	Gasoline	Commercial mowers, generators
Command PRO	CH620	2900–2999	674	V-Twin OHV	Gasoline	Lawn tractors, light commercial equipment
Command PRO	CV750	3300–3399	747	V-Twin OHV	Gasoline	Commercial mowers, utility vehicles
Command PRO EFI	ECH980	8800–8899	999	V-Twin EFI, Horizontal	Gasoline	Industrial machinery, high-performance mowers
Command PRO EFI	ECV880	8900–8999	824	V-Twin EFI, Vertical	Gasoline	Commercial turf equipment
Command PRO EFI	ECH440	8100–8199	429	Single-cylinder EFI	Gasoline	Construction equipment, pressure washers
Courage	SV470	2300–2399	535	Single-cylinder OHV	Gasoline	Residential lawn tractors
Courage	SV620	2500–2599	597	Single-cylinder OHV	Gasoline	Lawn tractors, light commercial mowers
Courage	SV735	2600–2699	725	V-Twin OHV	Gasoline	Premium lawn tractors, zero-turn mowers
Courage	SV830	2700–2799	725	V-Twin OHV	Gasoline	Heavy-duty residential mowers
Confidant	ZT720	5200–5299	725	V-Twin OHV	Gasoline	Light commercial mowers, tractors
Courage XT	XT800	1800–1899	173	Single-cylinder OHV	Gasoline	Push mowers, small equipment
Aegis	LH775	9100–9199	747	Liquid-cooled V-Twin OHV	Gasoline	High-performance commercial mowers
Command PRO	CV680	3100–3199	674	V-Twin OHV	Gasoline	Commercial mowers, utility equipment
Command PRO	CH270	1050–1099	208	Single-cylinder OHV	Gasoline	Small generators, pressure washers
3000 Series	SH270	1750–1799	208	Single-cylinder OHV	Gasoline	Utility equipment, small pumps

Note: The spec numbers listed in the chart are typical ranges. Some OEMs may request unique specs not shown here. Always consult the engine label for accurate info.

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How to Use the Kohler Spec Number

If you need to order parts or verify compatibility, use the spec number alongside the model number when searching. For instance, ordering a replacement air filter for a CH730-3403 engine is different from a CH730-3415 due to differences in air intake systems or carburetor setups.

Where to Find the Spec Number

You can find the spec number in one of these locations:

• Stamped on the engine shroud
• On a metal tag or decal
• Near the valve cover or starter motor

Make sure to clean the area if it’s dirty or greasy so you can clearly read the numbers.

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Why the Spec Number Matters

Here are a few scenarios where the Kohler spec number is critical:

• Ordering the correct oil filter: Different specs may use different filters even within the same engine model.
• Getting the right carburetor or EFI parts: Fuel system components vary by spec.
• Replacing the starter or charging coil: Electrical setups are often spec-dependent.
• Service manual lookup: Some manuals are specific to a spec number group.

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What is a Kohler Engine Spec Number?

The spec number on a Kohler engine is a unique identifier that indicates the engine’s specific configuration, features, and any customizations made for the original equipment manufacturer (OEM). It typically appears on the engine’s data label along with the model and serial number.

For example:

• Model: CH730
• Spec Number: 1234
• Serial Number: 3912345678

The spec number can tell you important details like:

• Governor type
• Oil filter configuration
• Exhaust orientation
• Crankshaft size and design
• Electrical system (starter, charging)
• Fuel system (carburetor or EFI)

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FAQs

How do I identify my Kohler engine by spec number?

Use the data label on your engine, which includes the model, spec, and serial number. Cross-reference the spec number with Kohler’s parts lookup system or service manual database.

Can two Kohler engines with the same model number have different specs?

Yes. For example, CH730-3401 and CH730-3410 are both CH730 models but may have different crankshafts, starters, or air filters.

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Are spec numbers the same as serial numbers?

No. The serial number is unique to one engine, like a VIN, while the spec number refers to a configuration shared by many units.

How do I find parts using a Kohler spec number?

Use Kohler’s official Parts Lookup or provide the model and spec number to your dealer or parts supplier.

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