Automotive Connector Back Cover – 1028-008-0405, Waterproof Housing Rear Seal for Female Socket Cable Plug

Part number 1028-008-0405 is a Delphi / Aptiv automotive connector back cover — the rear seal and secondary lock component for a specific Delphi/Aptiv female socket connector housing. The 1028-XXX-XXXX part number format is associated with Delphi’s Metri-Pack and GT series connector accessories, used in GM, Ford, Chrysler, and other OEM vehicle platforms. Back covers are critical for achieving IP67 sealing and secondary terminal retention in waterproof automotive connectors.

Key Specifications

• Part Number: 1028-008-0405
• Manufacturer: Delphi / Aptiv
• Component Type: Connector back cover / rear seal / secondary lock
• Material: PA66 nylon, flame retardant
• Function: IP67 rear seal + secondary terminal retention
• Application: Specific Delphi/Aptiv female socket connector housing (verify compatibility)

Delphi Metri-Pack Series — Back Cover Identification

The 1028-XXX-XXXX format covers Delphi’s Metri-Pack connector accessories. Metri-Pack connectors are widely used in GM vehicles:

• Metri-Pack 150: For signal circuits (0.35–0.5mm² wire)
• Metri-Pack 280: For low-current power circuits (0.5–1.0mm² wire)
• Metri-Pack 480: For medium-current circuits (1.0–2.5mm² wire)
• Metri-Pack 630: For high-current circuits (2.5–6.0mm² wire)
• Cross-reference 1028-008-0405 in the Aptiv catalog to identify the specific Metri-Pack series and compatible housing.

Frequently Asked Questions

How do I verify 1028-008-0405 is compatible with my connector?

Cross-reference 1028-008-0405 in the Aptiv catalog or Delphi parts database to identify the compatible connector housing part numbers. Verify the housing part number on the original connector before ordering. If the original back cover is lost, identify the connector housing part number and cross-reference to find the correct back cover.

How do I install a Delphi Metri-Pack back cover?

After loading all terminals and verifying seating: align the back cover with the housing rear face. For Metri-Pack connectors, the back cover slides onto the housing from the rear and locks with side tabs. Press firmly until the locking tabs click. Verify full seating by attempting to pull the back cover off — a properly installed back cover will not release without pressing the release tabs.

What happens if I use the wrong Delphi back cover?

An incorrect back cover will either not fit or will fit but not compress the wire seals correctly. A back cover that appears to fit but does not compress the wire seals will not achieve IP67 — the connector will pass water even though the back cover appears installed. Always verify the back cover part number against the housing part number.

Typical Applications

• GM vehicles: Replacing missing or damaged back covers on Delphi/Aptiv Metri-Pack connectors
• Ford/Chrysler vehicles: Back cover replacement on Delphi/Aptiv connector systems
• Automotive workshops: Workshop stock for Delphi/Aptiv connector accessories
• Harness manufacturing: Back covers for new Delphi/Aptiv connector assemblies

Package Contents

1 piece — automotive connector back cover 1028-008-0405 (Delphi/Aptiv). Compatible connector housing not included.