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 SeriesModelSpec Number RangeDisplacement (cc)Engine TypeFuel TypeCommon Applications
Command PROCH2601000–1099173Single-cylinder OHVGasolineTillers, small generators
Command PROCH3951100–1199277Single-cylinder OHVGasolineWalk-behind mowers, pressure washers
Command PROCH4401200–1299429Single-cylinder OHVGasolineConstruction tools, concrete saws
Command PROCH9603900–3999999V-Twin OHV EFIGasolineCommercial zero-turns, stump grinders
Command PRO EFIECH6308000–8099674V-Twin EFIGasolineHigh-efficiency commercial mowers
Command PRO EFIECH7498200–8299747V-Twin EFIGasolineRide-on and utility equipment
Command PRO EFIECV8508600–8699852V-Twin EFI, VerticalGasolineZero-turns, heavy-duty vertical applications
Command PRO EFIECV9408700–8799999V-Twin EFI, VerticalGasolineTurf and industrial machinery
ConfidantZT7105100–5199725V-Twin OHVGasolineLight commercial zero-turn mowers
ConfidantZT7405300–5399747V-Twin OHVGasolineResidential and commercial mowers
Courage XTXT6501500–1599149Single-cylinder OHVGasolinePush mowers
Courage XTXT6751600–1699149Single-cylinder OHVGasolineWalk-behind mowers
CourageSV5302400–2499535Single-cylinder OHVGasolineLawn tractors
MagnumM204100–4199747V-TwinGasolineGarden tractors, utility machines
K-SeriesK241700–799391Single-cylinderGasolineOlder riding mowers and tractors
K-SeriesK321800–899512Single-cylinderGasolineClassic small tractors
K-SeriesK181600–699305Single-cylinderGasolineOlder small tractors, generators
K-SeriesK582900–999946V-TwinGasolineIndustrial equipment, large tractors
K-SeriesK141500–599231Single-cylinderGasolineOlder small engines, pumps
K-SeriesK301750–799476Single-cylinderGasolineGarden tractors, utility vehicles
Diesel SeriesKD15-4409200–9299441Air-cooled DieselDieselCompact commercial machinery
Diesel SeriesKDW10039500–95991028Liquid-cooled DieselDieselAgricultural, construction, utility
Diesel SeriesKDW14049800–98991372Liquid-cooled DieselDieselConstruction, agricultural equipment
Diesel SeriesKDI2504M9700–979925044-cylinder DieselDieselMarine, industrial applications
Diesel SeriesKDI1930M9600–969919303-cylinder DieselDieselMarine, agricultural equipment
Diesel SeriesKDI3404M9900–999934044-cylinder DieselDieselHeavy industrial, marine applications
Diesel AegisLV6259000–9099625Liquid-cooled DieselDieselIndustrial and municipal machines
7000 SeriesKT6107000–7099597V-Twin OHVGasolineRiding mowers, zero-turns
7000 SeriesKT7157100–7199725V-Twin OHVGasolineResidential zero-turn mowers
7000 SeriesKT7357600–7699725V-Twin OHVGasolinePremium home and estate tractors
7000 Series PROKT7457500–7599747V-Twin OHV PROGasolineHigh-end residential & light commercial use
RH SeriesRH2651300–1399196Horizontal OHVGasolinePressure washers, pumps
SH SeriesSH2651400–1499196Horizontal OHVGasolineSnow blowers, augers
3000 SeriesSH2551700–1799196Single-cylinder OHVGasolineSmall utility equipment, pumps
Command PROCH10004000–4099999V-Twin OHVGasolineCommercial mowers, heavy-duty equipment
Command PROCH7303200–3299725V-Twin OHVGasolineZero-turn mowers, commercial tractors
Command PROCH6803000–3099674V-Twin OHVGasolineCommercial mowers, generators
Command PROCH6202900–2999674V-Twin OHVGasolineLawn tractors, light commercial equipment
Command PROCV7503300–3399747V-Twin OHVGasolineCommercial mowers, utility vehicles
Command PRO EFIECH9808800–8899999V-Twin EFI, HorizontalGasolineIndustrial machinery, high-performance mowers
Command PRO EFIECV8808900–8999824V-Twin EFI, VerticalGasolineCommercial turf equipment
Command PRO EFIECH4408100–8199429Single-cylinder EFIGasolineConstruction equipment, pressure washers
CourageSV4702300–2399535Single-cylinder OHVGasolineResidential lawn tractors
CourageSV6202500–2599597Single-cylinder OHVGasolineLawn tractors, light commercial mowers
CourageSV7352600–2699725V-Twin OHVGasolinePremium lawn tractors, zero-turn mowers
CourageSV8302700–2799725V-Twin OHVGasolineHeavy-duty residential mowers
ConfidantZT7205200–5299725V-Twin OHVGasolineLight commercial mowers, tractors
Courage XTXT8001800–1899173Single-cylinder OHVGasolinePush mowers, small equipment
AegisLH7759100–9199747Liquid-cooled V-Twin OHVGasolineHigh-performance commercial mowers
Command PROCV6803100–3199674V-Twin OHVGasolineCommercial mowers, utility equipment
Command PROCH2701050–1099208Single-cylinder OHVGasolineSmall generators, pressure washers
3000 SeriesSH2701750–1799208Single-cylinder OHVGasolineUtility 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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George Bill
George Bill

George Bill is a Mechanical Engineer by Profession and an avid gardener and has been mowing his lawn for over 20 years. He has used a variety of different mowers during this time.
George is an expert at maintaining his mowers and over the years, he has learned many tricks and techniques for getting the best results from his mowers and is always happy to share his knowledge on this site.