28-Pin Automotive Waterproof Connector – 6098-9831 / 6098-9827, Sumitomo Plastic Wire Harness Connector

Part numbers 6098-9831 and 6098-9827 are 28-pin waterproof automotive connectors from Sumitomo Electric Industries used in Toyota, Honda, and other Japanese OEM vehicle wiring harnesses. The 6098-XXXX part number format is characteristic of Sumitomo’s waterproof connector series. These two part numbers represent the male plug (6098-9831) and female receptacle (6098-9827) of the same 28-pin connector pair — order both for a complete connector assembly, or the individual half for replacement of a damaged housing.

Key Specifications

• Part Numbers: 6098-9831 (male plug) / 6098-9827 (female receptacle)
• Manufacturer: Sumitomo Electric Industries
• Pin Count: 28 pins
• IP Rating: IP67
• Housing Material: PA66 nylon, flame retardant
• Operating Temperature: -40°C to +125°C
• Application: Toyota, Honda, and Japanese OEM vehicle wiring harnesses

28-Pin Connector — Common Applications in Japanese Vehicles

• ECU sub-connectors: 28-pin connectors are used as secondary ECU connectors on Toyota and Honda engines, carrying sensor and actuator circuits not included in the main ECU connector
• Body control modules: BCM connections for lighting, door, and body circuit control
• Instrument clusters: Cluster connections carrying gauge, CAN bus, and warning light circuits
• Transmission control: TCM connections for automatic transmission solenoid and sensor circuits
• ABS/VSC: ABS module connections for wheel speed sensor and solenoid circuits

Frequently Asked Questions

What is the difference between 6098-9831 and 6098-9827?

6098-9831 is the male plug housing (accepts male pin contacts); 6098-9827 is the female receptacle housing (accepts female socket contacts). The plug connects to the receptacle to form a complete sealed connector. For replacement of a damaged connector half, order only the damaged half. For a complete new connector assembly, order both the plug and receptacle.

What contacts are compatible with Sumitomo 6098-series connectors?

Sumitomo 6098-series connectors use Sumitomo-specific contacts. Cross-reference the connector part number in the Sumitomo catalog or Toyota/Honda parts catalog to identify compatible contact part numbers. Common Sumitomo contact sizes for 28-pin connectors: 0.64mm or 1.5mm pitch depending on the specific connector series. Verify the contact size before ordering.

How do I repair a Sumitomo 28-pin connector?

Individual terminal replacement: (1) use a Sumitomo-compatible terminal extraction tool to remove the damaged terminal; (2) cut the wire behind the damaged terminal; (3) crimp a new terminal onto the wire using the correct Sumitomo crimp tool; (4) reinsert until the locking lance clicks; (5) verify seating with a pull-test; (6) reinstall the back cover. For Toyota vehicles, the Toyota Repair Manual specifies the extraction tool and replacement procedure.

Typical Applications

• Toyota vehicles: ECU, TCM, ABS, and body electronics connector repair
• Honda vehicles: ECU and body electronics connector replacement
• Japanese OEM repair: Sumitomo 28-pin connector replacement in Japanese vehicle wiring harnesses
• Automotive workshops: Workshop stock for Toyota/Honda connector repairs

Package Contents

Sumitomo 28-pin automotive waterproof connector (part number as selected: 6098-9831 male plug or 6098-9827 female receptacle). Contacts and wire seals ordered separately if not included.