ECU Bent Pin Automotive Waterproof Connector – OEM 776280 / 776266 / 776087 / 776163

Bent-pin (right-angle) ECU connectors for automotive engine management, ABS, transmission, and body control modules. The bent-pin design routes the wire harness at 90° to the connector mating axis — essential when the ECU is mounted close to a panel, firewall, or adjacent component where a straight-exit harness would create a tight bend radius or interference. OEM part numbers 776280, 776266, 776087, and 776163 are TE Connectivity / AMP series connectors used across multiple vehicle platforms for ECU board-end and harness-end connections.

Key Specifications

• OEM Part Numbers: 776280, 776266, 776087, 776163 (TE Connectivity / AMP)
• Pin Style: Bent pin (right-angle, 90° wire exit)
• Gender: Male and female (select above)
• Housing Material: PBT (polybutylene terephthalate), flame retardant
• Waterproof Rating: IP67 (mated)
• Contact Material: Copper alloy, gold or tin-plated
• Operating Temperature: -40°C to +125°C
• Quantity: 1, 5, or 20 pieces (select above)

Bent Pin vs Straight Pin ECU Connectors

• Straight pin: Wire exits parallel to the connector mating axis. Used when there is clearance for the harness to run straight away from the ECU. Standard for most ECU installations with adequate clearance.
• Bent pin / right-angle (this product): Wire exits at 90° to the mating axis. Used when the ECU is mounted close to a panel or when the harness must run parallel to the ECU face. Reduces the minimum bend radius at the connector exit, preventing wire fatigue and insulation damage from tight bends.

OEM Part Number Cross-Reference

• 776280: Typically used for larger pin-count ECU connectors (26–34 pin range), right-angle housing
• 776266: Mid-range pin count, right-angle, sealed
• 776087: Smaller pin count configurations, right-angle
• 776163: Variant with different contact pitch or housing dimensions
• Note: Always verify the exact part number against the ECU technical documentation or vehicle wiring diagram. Pin count, contact pitch, and housing dimensions vary between part numbers.

What Questions Does This Product Answer?

• "Why does my ECU use a bent-pin connector?" — The ECU is mounted in a location where the harness must exit parallel to the ECU face (e.g., close to the firewall or in a tight engine bay location). The bent-pin connector allows the harness to route along the ECU face without creating a tight bend at the connector exit, which would stress the wires and potentially cause intermittent faults.
• "How do I identify which 776xxx connector my ECU uses?" — Count the pins on the existing connector and measure the housing dimensions. Cross-reference against the TE Connectivity connector catalog using the part number printed on the connector housing (usually molded into the plastic). If the part number is not visible, use the vehicle wiring diagram to identify the connector specification.
• "Can I replace a bent-pin connector with a straight-pin connector?" — Only if there is sufficient clearance for the harness to exit straight from the connector without creating a tight bend. In most cases where a bent-pin connector was originally specified, the installation geometry requires the right-angle exit — substituting a straight connector will cause harness routing problems.
• "What causes ECU connector pin corrosion?" — Moisture ingress through a damaged housing seal or missing wire seal. The gold or tin plating on ECU contacts is thin (typically 0.3–0.8μm gold) and provides limited corrosion protection once the plating is breached. Replace corroded contacts and the housing seal; do not attempt to clean severely corroded gold-plated contacts with abrasives.

Typical Applications

• ECU repair: Replacing damaged bent-pin connectors on engine management modules
• Harness repair: Restoring damaged harness-end connectors on ECU sub-harnesses
• Custom ECU installations: Building OEM-compatible harness interfaces for aftermarket ECU installations in tight engine bay locations
• Motorsport: ECU harness builds requiring right-angle connector exits for panel-mounted ECUs

Package Contents

1, 5, or 20 pieces (select above) — ECU bent-pin connector, gender and part number as selected. Crimp contacts and wire seals included where applicable.