Caalii Oil & Air Filter Kit for Troy-Bilt Bronco 42" Mower — Kohler Courage 15-22 HP Compatible, Direct-Fit OEM Replacements

The Caalii 13WX78BS011 kit is a replacement oil and air filtration set engineered to fit Troy-Bilt Bronco 42" mowers and Kohler Courage 15–22 HP engines for reliable filtration and easy swaps.

When routine mower maintenance is due, choosing the right replacement filters keeps an engine running cleaner and longer. This Caalii kit bundles compatible air and oil elements—matching OEM part numbers—to simplify your service intervals for a range of Kohler Courage engines used on Troy-Bilt Bronco and similar residential mowers.

What exactly is included in the Caalii 13WX78BS011 kit?

The kit contains a matching oil filter and an air filter (plus pre-filter compatibility) designed to replace specific OEM part numbers. Items are sized and constructed to fit Kohler Courage engines rated 15 through 22 HP and common Troy-Bilt Bronco 42" mower setups.

• One oil filter compatible with P/N 52-050-02-S / 52-050-02.
• One air filter compatible with P/N 20-083-02-S, 20-083-06-S and related pre-filter variants.
• Materials built for typical lawn mower operating conditions and routine service.

How does this kit improve maintenance for my Troy-Bilt Bronco or Kohler engine?

Replacing worn filters restores proper airflow and oil cleanliness, which helps maintain performance and reduces the chance of abrasive wear. The Caalii replacements are engineered to match the form and function of the original parts so installation and engine fitment stay simple.

• Restores OEM-style filtration flow and sealing for correct engine operation.
• Simplifies service with direct-fit replacements for common Kohler part numbers.
• Durable construction for repeated seasonal use under residential conditions.

Will these filters fit my specific Kohler engine model?

Yes — the kit targets a broad range of Kohler Courage models used in lawn tractors and zero-turns. It lists compatibility across 15, 16, 17, 18, 19, 20, 21 and 22 HP engines, including several SV-series variants.

• Compatible with Kohler Courage engines: SV470, SV471, SV480, SV530, SV540, SV541, SV590, SV591, SV600, SV601, SV610, SV620 and S-series variants.
• Specifically suitable for Troy-Bilt Bronco 42" mower configurations using these engines.
• Check your engine’s OEM part numbers to confirm exact match before purchase.

How easy is installation and what should I expect during replacement?

Installation follows the same basic steps as OEM replacements: remove the old element, seat the new filter, and ensure proper sealing. The parts are designed for quick, low-friction swaps so routine maintenance is faster and less messy.

• Direct-fit design minimizes modification or extra tools.
• Follow manufacturer torque and sealing recommendations during oil filter change.
• Replace air filter and pre-filter as recommended by your engine’s service schedule.

Who is this kit for? Homeowners and landscapers who perform their own mower maintenance, owners of Troy-Bilt Bronco 42" lawn tractors, and anyone with Kohler Courage engines in the 15–22 HP range will find this Caalii kit useful. It’s intended for routine service intervals to maintain filtration efficiency and protect engine components; always refer to your engine manual for service frequency and safety instructions.