Paguro 6500 Marine Generator: Ultra-Quiet 6kW Diesel Power for 35-50ft Yachts
The perfect balance of power and silence—6kW continuous at only 54 dB(A) @ 7m, weighing just 110 kg with direct seawater cooling.
At Wave Inboard Motors, the Paguro 6500 has been our #1 selling 5-7kW marine generator since 2018—with over 180 units installed from Florida to the Pacific Northwest. Owners of 35-50ft sailboats and power cats love that it delivers 6kW continuous (6.5kW peak) at 120V/60Hz or 230V/50Hz while running quieter than a Fischer Panda 8000 and weighing 30-40% less. If you’re tired of bulky, noisy gensets that steal half your lazarette, our marine generator installation service can typically drop a Paguro 6500 where nothing else fits—often in the same space as two Group 31 batteries.
The Paguro 6500 is built around a reliable two-cylinder Lombardini LDW 1003 diesel with direct seawater cooling (no heat exchanger to clog), stainless steel water-jacket exhaust, and a dual-layer composite sound shield. It’s the only generator in its class that can run full load continuously in 35°C+ water without derating—perfect for air-conditioning, watermakers, and induction cooking on long passages.
Technical Specifications
| Specification | Details |
|---|---|
| Model | Paguro 6500 |
| Continuous Output | 6 kW (7.5 kVA) @ 0.8 pf |
| Peak Output | 6.5 kW (30 sec) |
| Voltage / Frequency | 120V 60Hz or 230V 50Hz (switchable) |
| Engine | 2-cylinder Lombardini LDW 1003 diesel |
| Engine RPM | 3600 (60Hz) / 3000 (50Hz) |
| Cooling | Direct raw-water (seawater) cooling |
| Noise Level | 54 dB(A) @ 7m |
| Dry Weight | 110 kg (243 lbs) |
| Dimensions (L×W×H) | 720 × 460 × 540 mm (28.3 × 18.1 × 21.3 in) |
| Fuel Consumption | 0.9–2.0 L/hr (load dependent) |
| Alternator | Synchronous, brushless, self-regulated |
| Sound Shield | Dual-layer composite (standard) |
| Certifications | CE, RCD, Lloyd’s Register (optional) |
Competitor Comparison
| Feature | Paguro 6500 | Fischer Panda 8000 (7.2 kW) | NextGen 5.5 kW | Phasor 6.5 kW |
|---|---|---|---|---|
| Continuous Power | 6.0 kW | 6.4 kW | 5.5 kW | 6.5 kW |
| Weight (dry) | 110 kg | 165 kg | 181 kg | 195 kg |
| Noise @ 7m | 54 dB(A) | 56 dB(A) | 58 dB(A) | 60 dB(A) |
| Cooling | Direct seawater (no heat exchanger) | Freshwater + heat exchanger | Freshwater + heat exchanger | Freshwater + heat exchanger |
| Engine Cylinders | 2 (Lombardini) | 2 (Kubota-based) | 2 (Kubota) | 2 (Kubota) |
| Typical Install Time | 8-12 hours | 16-24 hours | 16-20 hours | 16-20 hours |
| Price (2025 est.) | $12,800-$14,500 | $18,500-$21,000 | $13,500-$15,500 | $14,000-$16,000 |
Verdict: The Paguro 6500 dominates the 35-50ft sweet spot—lightest, quietest, and simplest cooling system. Fischer Panda is close on noise but heavier and more complex; NextGen and Phasor are solid but louder and bulkier. In our 2025 installs, 82% of clients in this size range chose the Paguro 6500 for its “fit anywhere” footprint and true full-load tropical performance.
Replacement & Installation Options
| Scenario | Recommended Path | Cost Range (2025) | Downtime |
|---|---|---|---|
| Old Onan/Phasor failing | Direct swap Paguro 6500 (often same mounts) | $15K-$19K installed | 3-5 days |
| Adding first 6kW generator | Paguro 6500 + custom sound box | $16K-$22K installed | 5-7 days |
| Need 8-10 kW | Step up to Paguro 9000 or 12000 | $19K-$26K | 5-8 days |
Our marine generator installation service includes custom mounting plates, exhaust routing, and remote panels—many 40-48ft boats fit the 6500 where competitors won’t.
Pros and Cons
| Pros | Cons |
|---|---|
| Lightest & one of the quietest 6kW (110 kg / 54 dB) | 3600 rpm (minor vibration vs 3000 rpm units) |
| Direct seawater cooling (no heat exchanger) | Two-cylinder pulse feel (still very smooth) |
| Fits in impossibly tight spaces | 6.0 kW continuous (not for dual 16k BTU AC) |
| Runs full load in tropics without derating | Parts mainly Europe (we stock full kits) |
| 10-year corrosion warranty on water jacket | 60Hz version standard (50Hz available) |
Frequently Asked Questions (FAQs) About the Paguro 6500 Marine Generator
From 180+ installs and owner calls:
Is the Paguro 6500 really quieter than Fischer Panda?
Yes—54 dB(A) @ 7m vs Panda’s 56 dB(A) in real-world tests; many owners report it’s “barely audible” from the cockpit.
Can the Paguro 6500 run a 16,000 BTU air-conditioner?
Yes with soft-start (draw ~12-14A at 120V). Dual units or hard-start need Paguro 9000.
Direct seawater cooling—corrosion concerns?
No—stainless water jacket + zinc anode, 10-year warranty. Zero corrosion failures in our fleet.
Weight and size vs Fischer Panda 8000?
Paguro 6500: 110 kg, 720×460×540 mm Panda 8000: 165 kg, 770×520×620 mm 55 kg lighter, 30% smaller volume.
Service intervals for Paguro 6500?
Oil/filter every 200 hours, impeller/anode yearly—simpler than heat-exchanger units.
Parts availability in the USA 2025?
We stock full kits (impellers, filters, anodes, belts) in Florida—24-48 hour delivery nationwide.
Ready for silent, compact power? Contact us for Paguro 6500 pricing and fitment survey—we’ll confirm it fits your boat in 24 hours.
