Overview#
The Blue Star JD80-03FT4 is an 80-kilowatt EPA Tier 4 Final diesel standby/prime generator built around the John Deere 4045HFG04 — the same 4.5-liter inline-four used in the JD60-04FT4, but paired with a larger Stamford UCI274C alternator to deliver the higher kW rating. This is a current-production active model.
Both standby and prime ratings are equal at 80 kWe, making this unit suitable for continuous prime power applications as well as emergency standby.
The John Deere 4045HFG04 platform#
The 4045HFG04 at the 80 kW rating point:
- Same 4.5L inline-four as the JD60-04FT4 — identical engine specs, bore (4.20 in), stroke (5.00 in), and 133 HP rating
- Higher alternator loading — the UCI274C alternator extracts 80 kWe versus 60 kWe from the same engine, resulting in higher fuel consumption (5.96 vs 4.82 gph at full load)
- SCR/DOC aftertreatment with 3.8-gallon integrated DEF tank, approximately 4.3% DEF-to-fuel consumption ratio
- 8,400 ft altitude ceiling — same excellent high-altitude capability as the JD60
Variant selection guide#
The JD80-03FT4 is the higher-output configuration of the 4045HFG04 platform:
- JD60-04FT4 (60 kW, same engine, Tier 4 Final) — same footprint, lower fuel consumption, 200 lbs lighter. Choose this if 60 kW meets the load study.
- VD100-04FT4 (100 kW, Volvo Penta, Tier 4 Final) — steps up to a Volvo Penta engine for the next kW class. Choose this if 80 kW is marginal.
- JD80-02 (80 kW, John Deere, Tier 3) — the Tier 3 predecessor without aftertreatment or DEF. Choose only where Tier 3 is still permitted.
When to spec the JD80-03FT4#
- 64-80 kW emergency standby or continuous prime loads on diesel fuel
- Jurisdictions requiring Tier 4 Final emissions
- Mid-size commercial facilities: retail centers, restaurants, offices, schools, small medical offices
- Sites at any elevation up to 8,400 ft
- Applications where the JD60-04FT4 is undersized but the VD100-04FT4 is overkill
