Olympian Serial & Model Number Guide
Every Olympian 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 — GEP18-6:
| Part | Meaning | Detail |
|---|---|---|
GEP | Product line | Olympian's diesel generator-set line (GEK covers smaller kW classes). |
18 | Power class | Approximate standby kVA/ekW rating class, per Caterpillar's official Olympian Electric Power Ratings Guide. |
- | Phase | A plain hyphen (no SP) denotes three-phase output; SP denotes single-phase output instead (e.g. GEP14SP6) — observed directly from the ratings guide's own "Three Phase Output" / "Single Phase Output" table sections, not a stated glossary rule. |
6 | Configuration | An engine/emissions configuration variant (e.g. Low BSFC, EU Stage II, EU Stage IIIA), tied row-by-row to the ratings guide's own "Configuration" column — not a pole count or frequency, despite looking like one. |
Using the serial number
This breakdown is derived directly from the structure of Caterpillar's own official ratings tables, not a single explicit glossary sentence — treat the phase and configuration readings as observed patterns, confirmed row-by-row, rather than a quoted definition. No public serial-to-build-date formula was found.
Common Olympian maintenance parts
The service parts Olympian'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 | T74105021 | 2 Olympian models incl. GEP50, GEP65-3 | eBay $19.00 NAPA $20.60 Amazon |
| Air filter | 1000051238 | 2 Olympian models incl. GEP50-7, GEP65-9 | NAPA $62.83 |
Prices captured from merchant listings. As an affiliate, this site may earn from qualifying purchases.
Popular Olympian models
Full specs, parts and maintenance data for specific units:
Browse Olympian generators & specs →
Decode rules verified against: Caterpillar "Olympian Electric Power Ratings Guide — Generator Sets" (LEXE7581-04, June 2013). Figures are for reference; confirm against the official documentation for your exact unit.