Stens Oil Filter 055-105 for Kohler 12 050 01-S

What It Is

The Stens 055-105 is a spin-on oil filter designed to replace the Kohler 12 050 01-S on residential and commercial lawn mowers, zero-turn mowers, and tractors equipped with Kohler Courage, Command, or Pro engines.

Fitment & Compatibility

• Direct replacement for: Kohler part number 12 050 01-S.
• Common engine models: Kohler Courage (SV470–SV620), Command (CH18–CH26), and Pro (PSI series). Confirm your engine model number (stamped on blower housing or valve cover).
• Thread size: 3/4″-16 UNF (standard for most small engines).
• Gasket diameter: ~2.5″ (fits most Kohler filter mounts).
• Cross-references: Also fits some Briggs & Stratton, Kawasaki, and John Deere applications—check your owner’s manual or measure the old filter’s thread and gasket.
• What to measure: Thread pitch (3/4″-16 is common), gasket O.D., and filter height (about 3.5″ tall) to avoid clearance issues on compact decks.

Key Things to Know

• Quality: Stens is an aftermarket brand; meets or exceeds OEM specs. Users report no leaks or premature failures in thousands of reviews.
• Installation: Hand-tighten only (1/2 to 3/4 turn after gasket contacts). Over-tightening can strip threads or crack the filter housing.
• Oil capacity note: Using this filter does not change your engine’s oil capacity—always fill to the dipstick mark.
• Gotcha: Some Kohler engines use a short filter (e.g., 12 050 01-S is ~3.5″). If your old filter is taller, the Stens 055-105 may not fit without hitting the frame or belt guard. Measure first.

Should You Buy It

If you own a Kohler Courage or Command engine and want a reliable, affordable replacement that matches OEM specs, this is a solid buy. It’s not for high-horsepower commercial diesels or engines requiring a different thread size. For $14 and 4.8 stars, it’s a no-brainer for routine oil changes.