SDMO Serial & Model Number Guide
Every SDMO generator carries a model/serial label. Here is where to find it, what each part of the number means, and how to use it for parts, service and age.
What the number means
Worked example — V550:
| Part | Meaning | Detail |
|---|---|---|
V | Engine-brand prefix | J = John Deere (40-275 kW), D = Doosan (150-700 kW), V = Volvo Penta (275-700 kW), M = Mitsubishi (400-2,500 kW), K = Kohler KDI (10-40 kW) — per a Kohler-SDMO dealer's published decode. |
550 | kVA rating | The generator's kVA rating. |
Using the serial number
No source found decodes SDMO's trailing suffix letters (e.g. FRZ4, U, TE) beyond the prefix + kVA scheme above, and this decode is dealer-sourced, not an official SDMO/Kohler document — confirmed genuine Kohler spec sheets for related REOZK/REOZJ models carry no nomenclature table at all. Note: some SDMO documentation lists the model field as the John Deere ENGINE model fitted inside the set (e.g. 4045DF270, 6068HFS55 — DF/HF/TF are John Deere's own fuel-system suffixes) rather than SDMO's own genset code; don't confuse the two. No public serial-to-build-date formula was found.
Common SDMO maintenance parts
The service parts SDMO's own documents list across more than one generator model. Confirm the number for your unit on its model page or data plate before ordering.
| Part | Part number | Fits | Price |
|---|---|---|---|
| Oil filter | 30A4000103 | 3 SDMO models incl. T11U, T11UC4, T16U | eBay $17.00 |
| Oil filter | 330560546 | 2 SDMO models incl. T 22 K, T22C3 | eBay $28.08 |
| Fuel filter | 330560552 | 5 SDMO models incl. J 44 K, T 22 K, T11U | PartsGeek $11.97 eBay $17.99 NAPA $36.94 |
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Popular SDMO models
Full specs, parts and maintenance data for specific units:
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Decode rules verified against: PowerGen Inc. SDMO/Kohler-SDMO dealer FAQ (powergenserv.com) — dealer-sourced, not an official Kohler/SDMO document. Figures are for reference; confirm against the official documentation for your exact unit.