Sea-Doo iBR / WILLIAMS iNR Connector Housing – 278002880

Description

This connector housing for the Sea-Doo iBR system, marketed by the supplier as the "IBR Seal Plug," is offered as a replacement for part number 278002880. It is used when repairing the wiring for the iBR brake and reverse system, after comparison with the original connector. WILLIAMS applications equipped with the iNR system are also indicated below according to the details provided in this file.

Technical Specifications

• Announced replacement part number: 278002880.
• Manufacturer part number: not specified.
• Type: iBR connector housing, supplier designation "IBR Seal Plug."
• Material: ABS.
• Condition: new.
• Packaging: one connector assembly as per supplier presentation; details of included pins and seals not specified.
• Recorded weight: 39 g.
• Regulated substances: no substances of concern declared by the supplier.
• Installation: instructions not provided. Must be performed by a professional, with power supply isolated according to the workshop manual, and including a check of the pinout, locking mechanism, and sealing elements.

Compatibility

The supplier lists the following Sea-Doo families for reference only, without specifying years or iBR system generations. The presence of the system and the correspondence of the connector must be verified; this list does not guarantee fitment on all versions.

• Sea-Doo GTS, GTR, GTI, RXP, RXT, and GTX, 
• Sea-Doo WAKE, Fish, and Spark, 
• WILLIAMS 345, 395, and 435 equipped with the iNR option, .
• WILLIAMS 400, 460, and 520, 

⚠️ Always check your serial number (VIN) and the original OEM part number before ordering to confirm exact compatibility with your model.

Why Replace the iBR Connector Housing?

A damaged housing or faulty locking mechanism can compromise the connection and protection of the contacts. Repairs must be preceded by a diagnosis of the wiring harness and the system to ensure that any iBR failure is not automatically attributed to the connector.

• Cracked or deformed housing.
• Broken locking mechanism or poorly secured connector.
• Damaged sealing elements discovered during disassembly.
• Oxidation of contacts or connection failure confirmed by diagnosis.

During maintenance, check the connector, pins, and wiring harness according to the workshop manual recommendations. Replace damaged parts and verify the assembly before returning to service. Replacing the housing alone will not correct damaged contacts or wires.

See Also – Other Products for Sea-Doo iBR Repair

Complete your repair with these parts and this tool. Check the iBR generation, the selected variant, and the applications for each product separately; their WILLIAMS compatibility is not confirmed here.

Sea-Doo iBR Repair Parts – Motor, Gears, Bellows, and Connector

Sea-Doo iBR Motor Gear Removal Tool – GTI RXP RXT GTX Spark 2016–2022