420874520 Fuel Injector for Sea-Doo RXP S/C 1503 2004
420874520 Fuel Injector for Sea-Doo RXP S/C 1503 2004
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Fuel Injector for Sea-Doo RXP S/C 1503
This fuel injector for Sea-Doo delivers a precise, metered spray of fuel into the 1503 engine's combustion chamber, helping restore smooth acceleration and reliable starting on the RXP S/C. It is an OEM cross-reference replacement for part number 420874520.
Overview
This fuel injector is built to replace a worn or clogged unit on the Sea-Doo RXP S/C 1503, restoring proper fuel delivery to the engine. A clean, consistent spray pattern from this fuel injector for Sea-Doo helps maintain power output and throttle response on the water. It suits riders performing routine maintenance or diagnosing a misfire or rough-running condition.
Built For Performance
- Direct cross-reference to OEM part number 420874520
- Electromagnetic solenoid design for fast, repeatable injector pulses
- Precision-machined nozzle orifice for consistent atomization
- Sealed electrical connector resists moisture and corrosion
- Heat-resistant body materials suited to marine engine bay temperatures
- Drop-in fit for the 1503 engine injector location
Fits These Machines
- for Sea-Doo RXP S/C 1503 (2004)
On-The-Job Use
- Replacing a clogged or failed injector during engine service
- Correcting rough idle, misfire, or poor throttle response
- Routine fuel system maintenance on personal watercraft
- Restoring consistent fuel delivery for full power on the water
Specs At A Glance
| Part Number(s) | 420874520 |
| Engine | 1503 (supercharged) |
| Model | RXP S/C |
| Type | Fuel injector |
| Placement | Engine fuel rail |
Good To Know
Q: Do I need to replace all the injectors at once? A: It depends on the condition of the others; many riders replace a single failed injector, while matched sets are often chosen for even fuel delivery across all cylinders.
Q: How do I know a fuel injector needs replacing? A: Common signs include rough idling, hesitation under acceleration, misfires, and poor fuel economy, which can all point to a clogged or failing injector.
Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.
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