420874846 Fuel Injector for Sea-Doo GTX STD 155 1503 2017

Fuel Injector for Sea-Doo

This fuel injector replaces OEM part 420874846 and provides accurate fuel metering for the 1503 engine used in the Sea-Doo GTX STD 155.

Overview

This fuel injector is a direct-fit replacement for the 1503 engine found in the Sea-Doo GTX STD 155. It controls fuel spray into the intake so the engine runs smoothly from idle to wide-open throttle. It suits riders and technicians handling fuel system repair on this model.

Built For Performance

• Direct replacement for OEM part number 420874846
• Calibrated to match original injector flow characteristics
• Sealed connector resists moisture in marine engine bays
• Corrosion-resistant housing for long-term use on the water
• Fast solenoid response for consistent fuel delivery
• Installs without changes to wiring or ECU calibration

Fits These Machines

• for Sea-Doo GTX STD 155 1503 (2017)

On-The-Job Use

• Replacing a failed injector causing misfire or hard starting
• Fuel system repair on the 1503 engine platform
• Correcting lean or rich conditions traced to injector wear
• Pre-season service to keep the craft running reliably

Specs At A Glance

Good To Know

Q: Can I install this injector without a tune? A: Yes, this injector is built as a direct replacement for OEM number 420874846, so no calibration changes are required when replacing a failed unit. Confirm the part number matches your engine before ordering.

Q: Is this an original Sea-Doo part? A: This is an aftermarket fuel injector built for Sea-Doo applications and cross-referenced to OEM number 420874846. It is not an original factory part.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.