Overview

• Manufacturer: John Deere
• Part name: Electrical Connector Seal
• Part number: Z78008
• Purpose: Seals electrical connections within John Deere wiring harnesses to protect the contact interface from moisture, dust, and environmental contaminants in agricultural environments.

Key Features

• Part Number: Z78008
• Type of machine suitable for: Fits the 8-cavity black external electrical connector housing (57M8747) used in John Deere fuel-injection system harnesses; commonly referenced in the John Deere 6400-series fuel-injection parts context and models within the 6100D–6140D family.
• Installation tips: - Replace the corresponding seals in cavities 2 and 4 of the 8-cavity connector housing during service. - Ensure the new seal sits flush against the housing face to maintain a moisture-proof seal. - Inspect mating surfaces for damage and reassemble with proper alignment; use dielectric-grade lubrication if recommended by service manuals.

Compatibility

• Suitable machine models: John Deere tractors listed in the 6400 Fuel Injection Parts List, including models 6100D, 6110D, 6115D, 6125D, 6130D, and 6140D, within the fuel-injection wiring harness context where Z78008 is specified.
• Alternative part numbers / cross references: - 57M7258 (Electric Connector Seal) appears as a cross-reference in regional catalogs. - R78059 (Electric Connector Seal) is another cross-reference used in Deere catalogs.