Oberdorfer N202M-17P Bronze Seawater Pump — OEM Replacement for Phasor Generators with Kubota V1505 Engine
If you run a Phasor generator powered by a Kubota V1505 engine, keeping the cooling system healthy isn't optional — it's everything. The Oberdorfer N202M-17P is the factory-spec seawater pump built for exactly this application, engineered to mount behind the injection pump on the V1505 and deliver dependable raw water circulation without complaint. It's a pump-end-only unit, meaning it pairs directly with your existing drive setup using a 2-bolt flange and male tang shaft, so installation is clean and straightforward.
Built from marine-grade bronze with a high-chrome nickel stainless steel drive shaft, the N202M-17P is designed to handle the punishment of continuous cooling duty. The neoprene flexible impeller draws water in and moves it through with no metal-to-metal contact — there are no gears to jam or clog, just one moving part doing its job smoothly. The pump is fully self-priming, handles suction lifts up to 15 feet when primed, won't air-lock even if air passes through the system, and delivers a consistent, pulsation-free flow. Dual seals protect both the main pump body and the flange mount, and a convenient drain plug lets you winterize or service the unit without drama. When it's time for maintenance, the pump is fully rebuildable — so you're extending service life, not replacing the whole unit every cycle.
Key Features
- Full cam bronze pump end — no separate cam required
- 2-bolt mounting flange with male tang (tang) shaft drive
- High-chrome nickel stainless steel slotted drive shaft
- Standard neoprene (rubber) flexible impeller; nitrile available as special order
- Dual seal design: independent seals on main pump body and flange mount
- Machined-in cam located inside the pump chamber for consistent positive displacement
- Convenient bottom drain plug for easy winterization and servicing
- Self-priming — primes at both low and high operating speeds
- No air-lock — continues to operate even when air passes through the system
- Smooth, pulsation-free flow delivery
- Fully rebuildable and restorable to like-new condition
- Operates in either rotational direction; shaft rotation determines inlet/outlet
Applications
- OEM seawater (raw water) cooling pump for Phasor generators using the Kubota V1505 engine
- Engine cooling on diesel generators and stationary power equipment
- Raw water circulation for heat exchangers and liquid cooling systems
- Transfer of fresh water, salt water, and mild chemical solutions compatible with neoprene
- Industrial fluid transfer where a self-priming, positive-displacement flexible impeller pump is required
Specifications
- Part Number: N202M-17P
- Manufacturer: Oberdorfer Pumps
- Pump Type: Flexible impeller, positive displacement
- Body Material: Marine-grade bronze
- Shaft Material: High-chrome nickel stainless steel
- Impeller Material: Neoprene (standard); Nitrile available by special order
- Port Size: 3/4" inlet x 5/8" outlet, Female NPT (FNPT), 135° angle configuration
- Mounting: 2-bolt flange
- Drive Type: Male tang shaft
- Maximum Suction Lift: 15 feet (when fully primed)
- Maximum RPM: 3,500
- Maximum Pressure: 26 PSI
- Operating Temperature Range: 40°F to 140°F (4°C to 60°C)
- Impeller Temperature Limits: 45°F to 180°F (7°C to 82°C)
- Compatible Engine: Kubota V1505 (Phasor generator application)
- Self-Priming: Yes, at low and high speeds
- Seals: Dual — one main pump seal, one flange mounting seal
- Drain Plug: Yes, located at bottom of pump body
- Flow Direction: Determined by shaft rotation direction
- Fluids Handled: Fresh water, salt water, mild chemicals compatible with neoprene; do not pump gasoline, severe solvents, or acids
Frequently Asked Questions
Q: Is the Oberdorfer N202M-17P a complete pump assembly or a pump end only?
The N202M-17P is a pump end only. It is designed to mount directly to the Kubota V1505 engine using its 2-bolt flange and male tang drive shaft, integrating with the engine's existing drive arrangement rather than requiring a separate motor.
Q: What happens if the pump runs dry?
Running this pump without liquid flowing through it will cause rapid degradation of the neoprene impeller. The flexible impeller generates significant friction when not lubricated by the pumped fluid. Always ensure the pump is primed before startup, and never allow it to run dry — even briefly.
Q: Can this pump run in reverse or be mounted at different angles?
Yes. The N202M-17P can operate in either rotational direction, and the direction of shaft rotation determines which port acts as the inlet and which as the outlet. It can also be mounted at virtually any angle, giving you flexibility during installation or replacement.
Q: Can the N202M-17P be repaired rather than replaced when it wears out?
Absolutely. Oberdorfer designs the N202M series to be fully serviceable. Repair kits are available that include the impeller, lip seals, retaining ring, and cover plate gasket or O-ring depending on your pump's vintage. Rebuilding is typically far more cost-effective than full pump replacement.
Q: What fluids should never be pumped through the N202M-17P?
Gasoline, harsh solvents, and strong acids are incompatible and must never be pumped through this unit. Additionally, do not allow water to freeze inside the pump — drain it via the bottom drain plug during cold-weather storage or periods of extended non-use.
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