If you’re maintaining a Kohler CH740-3118 engine, choosing the right oil filter isn’t just a preference, it’s essential. The right filter keeps your engine running smoothly, prevents contaminants from circulating, and extends the lifespan of the engine.
This post guide provides a full interchange chart for the CH740-3118 oil filter along with key insights, recommendations, and tips to make filter replacement easier and more effective.
Kohler CH740-3118 Oil Filter Interchange Chart
| Brand | Part Number | Notes |
|---|---|---|
| Kohler OEM | 52 050 02-S | Original Equipment |
| Fram | PH3614 | Widely available |
| Wix | 51056 | High-quality build |
| Purolator | L10241 | Reliable aftermarket choice |
| STP | S3614 | Budget-friendly |
| NAPA Gold | 1056 | Premium filtration |
| Baldwin | B33 | Industrial-grade filter |
| Briggs & Stratton | 492932S | Compatible with similar specs |
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What is the Kohler CH740-3118 Engine?
The Kohler CH740-3118 is a 27-horsepower Command PRO engine used in commercial-grade lawn mowers, zero-turn mowers, and small utility vehicles. It’s air-cooled, twin-cylinder, and built for rugged performance.
Key Specs:
- 27 HP
- Air-cooled V-Twin
- Hydraulic lifters
- Overhead valve (OHV) design
- Pressure lubrication system with oil filter
This model demands high-quality oil filtration due to its heavy-duty applications.
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Importance of Choosing the Right Oil Filter
Using the correct oil filter ensures:
- Effective contaminant removal
- Optimal oil pressure maintenance
- Prevention of premature engine wear
- Enhanced performance in harsh conditions
Poor-quality or incompatible filters can restrict oil flow or allow unfiltered oil back into circulation.
Understanding Oil Filter Codes and Standards
Oil filter codes may look different across brands, but they often mean the same thing:
- Thread size (usually 3/4″-16 for CH740-3118)
- Gasket dimensions
- Bypass valve rating
- Micron rating (efficiency of filtration)
Always compare specs, not just part numbers.
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OEM vs Aftermarket Oil Filters
| Feature | OEM Filter | Aftermarket Filter |
|---|---|---|
| Quality Control | Guaranteed | Varies by brand |
| Fitment | Perfect | May vary slightly |
| Cost | Higher | Lower |
| Availability | May need special order | Widely available |
While OEM is a safe bet, high-quality aftermarket filters like WIX, Fram, and Purolator are trusted alternatives.
Kohler CH740-3118 Oil Filter Specs
- OEM Part Number: 52 050 02-S
- Thread Size: 3/4″-16
- Gasket OD: ~2.8 in
- Micron Rating: 25-30
- Anti-drain-back valve: Yes
- Bypass Valve: Yes
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Top 5 Compatible Oil Filters for Kohler CH740-3118
- WIX 51056 – Excellent filtration, durable design.
- Fram PH3614 – Common, affordable, and easy to find.
- Purolator L10241 – High-efficiency with anti-drain back valve.
- STP S3614 – Solid budget alternative.
- NAPA Gold 1056 – Professional-grade filtration.
These options match or exceed OEM specifications.
FAQ
What oil does a Kohler CH740 take?
The Kohler CH740 typically uses SAE 10W-30 oil for general operating conditions. In colder climates, SAE 5W-30 is recommended. Always refer to your owner’s manual for temperature-specific oil recommendations.
What thread size is the Kohler CH740 oil filter?
The standard thread size for the Kohler CH740-3118 oil filter is 3/4″-16. This thread size is common across many small engines and makes it easier to find compatible filters.
Can I use a car oil filter on my Kohler engine?
While some car oil filters may physically fit, it’s not recommended unless the filter meets the same specs (thread size, bypass pressure, micron rating). Always verify compatibility with engine requirements.
What’s the best oil filter brand for CH740-3118?
There are many high-quality brands. WIX, NAPA Gold, and Purolator are highly regarded for consistent performance and durable construction. Kohler’s OEM filter is also an excellent choice.
How many microns should my oil filter be?
For the CH740 engine, a micron rating of 25–30 is ideal. This level of filtration captures small contaminants without restricting oil flow.
Is a synthetic oil filter better for Kohler engines?
Yes, synthetic oil filters generally offer better filtration efficiency, longer life, and higher temperature resistance. They’re especially beneficial in heavy-duty or commercial mower applications.
How often should I replace the oil filter on a CH740?
Kohler recommends replacing the oil filter every 100 hours of operation or with every oil change. In dusty or demanding environments, you may need to change it more frequently.
