Automotive Connector Back Cover – 9818385, Waterproof Housing Rear Seal for Female Socket Cable Plug

Part number 9818385 is an automotive connector back cover (rear seal / secondary lock) for a specific waterproof female socket connector housing. The 7-digit part number format is consistent with Volvo, Scania, and other European truck OEM part numbering systems. Back covers are critical for achieving IP67 sealing and secondary terminal retention in waterproof automotive connectors used in commercial vehicle wiring harnesses.

Key Specifications

• Part Number: 9818385
• Component Type: Connector back cover / rear seal / secondary lock
• Material: PA66 nylon, flame retardant
• Function: IP67 rear seal + secondary terminal retention
• Application: Specific female socket connector housing in truck/commercial vehicle wiring (verify compatibility)

Back Cover Functions

• IP67 rear sealing: Compresses individual wire seals against the housing rear face. Without the back cover, wire seals are not compressed and water enters through the rear of the housing.
• Secondary terminal retention: Locks over terminal lancing lances, preventing push-back under cable pull forces and vibration — especially critical in commercial vehicles with high vibration levels.
• OEM compliance: Required for the connector to meet IP67 specification and the vehicle manufacturer’s electrical system requirements.

Frequently Asked Questions

How do I verify 9818385 is compatible with my connector housing?

Cross-reference 9818385 with the truck manufacturer’s parts catalog (Volvo, Scania, or similar) to identify the compatible connector housing part numbers. The parts catalog lists the back cover part number as an accessory to the specific connector housing. Verify the housing part number on the original connector before ordering.

How do I install this back cover?

After loading all terminals and verifying each is fully seated (pull-test each wire): align the back cover with the housing rear face, matching the orientation key. Press firmly until the locking tabs click into the locked position. For commercial vehicle connectors with heavy cable bundles, support the cable bundle during installation to prevent terminal displacement.

Can I reuse this back cover after removal?

Yes, if undamaged. Inspect for cracks, deformed locking tabs, and damaged sealing surfaces. Replace if the back cover no longer clicks firmly into the locked position.

Typical Applications

• European trucks: Back cover replacement during connector repair on Volvo, Scania, DAF, and MAN wiring harnesses
• Agricultural equipment: Connector assembly completion for harness repair
• Construction equipment: Back cover replacement on heavy machinery wiring harnesses
• Truck workshops: Workshop stock for commercial vehicle connector back covers

Package Contents

1 piece — automotive connector back cover 9818385. Compatible connector housing not included.