How old is my Kohler generator?
Serial number age decoder for Kohler standby and portable generators: 1 format era, the decode rule in plain English, transcribed tables, and the official lookup.
- Kohler's official lookup at rehlko.com returns kohlerpower.com now redirects to rehlko.com; lookup not located.
Format eras
- era not stated UNSOURCED
no date in serial
How to read the serial
era not stated formatUNSOURCED
Where the data plate is on a generator
Standby units: a plate inside the enclosure or on the frame near the controller. Portables: a sticker on the frame or engine housing.
General guidance, not brand-specific: the owner's manual or the installer can point to the exact spot. See the data plate guide.
For scale only: the InterNACHI Standard Estimated Life Expectancy Chart for Homes lists Residential Propane Backup Generators at 12 years of expected service (nachi.org). That chart is a guideline, not a prediction for your unit.
Open the official Kohler lookup takes n/a; returns kohlerpower.com now redirects to rehlko.com; lookup not located; URL unverified
This site is a reference built from published tables. The manufacturer's own lookup wins whenever the two disagree.
What we could not confirm
- The era not stated format has no source we could check; it is shown for completeness only.
- The era not stated format is documented but not decodable here: no pattern (no date encoded, or format unknown).
- UNSOURCED: kohlerhomeenergy.rehlko.com/faq and engines.rehlko.com/faqs (both 200) contain no serial date-code text; engines.rehlko.com blocks WebFetch; search budget exhausted. Commonly cited 'first two digits of engine serial = year code' NOT verified this session.