Automotive Connector Wire Seal – 357972842, Rubber Plug Seal for VW/Audi Waterproof Connector

VW/Audi part number 357972842 is an automotive connector wire seal (individual wire/plug seal) for waterproof connector assemblies in Volkswagen Group vehicles. The 357-series part numbers are associated with VW Group electrical components from the Golf Mk3/Mk4, Passat B4/B5, and Audi A4/A6 generations. Wire seals are the primary IP67 sealing element in waterproof automotive connectors — each conductor passes through its own wire seal, which compresses around the wire jacket to prevent water ingress. Wire seals must be replaced whenever a terminal is replaced.

Key Specifications

• VW/Audi Part Number: 357972842
• Component Type: Individual wire seal / plug seal
• Material: Silicone rubber (heat and chemical resistant)
• Function: IP67 sealing around individual conductors at housing rear entry
• Application: VW Group waterproof connector assemblies (Golf Mk3/Mk4, Passat B4/B5, Audi A4/A6)
• Wire Range: Specific wire OD range (verify against VW parts catalog)

VW/Audi Wire Seal Part Numbers

VW Group uses multiple wire seal part numbers for different wire OD ranges and connector series:

• 357972841: For smaller wire OD (0.35–0.5mm² / 22–20AWG)
• 357972842 (this product): For medium wire OD (0.5–1.0mm² / 20–18AWG)
• 357972843: For larger wire OD (1.0–1.5mm² / 18–16AWG)
• Select the wire seal that matches the wire jacket OD. Using the wrong size will not achieve IP67 sealing.

Frequently Asked Questions

How do I install a VW/Audi wire seal?

1. Slide the wire seal onto the wire before stripping and crimping. 2. Position the seal at the correct distance from the wire end (per the VW connector assembly instructions). 3. Strip the wire and crimp the terminal. 4. Insert the terminal into the housing — the wire seal enters the housing cavity with the terminal. 5. Install the back cover to compress the wire seal. The seal must be on the wire before crimping — it cannot be installed after the terminal is crimped.

Which VW/Audi connectors use 357972842 wire seals?

357972842 wire seals are used in VW Group waterproof connectors throughout the Golf Mk3/Mk4, Passat B4/B5, Audi A4 B5/B6, and related platforms. Common applications: engine bay sensor connectors, underbody connectors, door connectors (lower section), and exterior lighting connectors. Cross-reference the connector housing part number in the VW parts catalog to verify the correct wire seal part number.

Can I use 357972842 in non-VW connectors?

Only if the wire seal dimensions match the connector housing cavity geometry. Wire seals are sized for specific connector housing cavities — a VW wire seal may not fit correctly in a non-VW connector housing. Verify dimensional compatibility before using in non-VW applications.

Typical Applications

• VW Golf Mk3/Mk4: Wire seal replacement during connector repair
• VW Passat B4/B5: Waterproof connector wire seal replacement
• Audi A4 B5/B6 / A6 C4/C5: Wire seal replacement in engine bay and underbody connectors
• VW/Audi workshops: Workshop stock for VW Group connector wire seals

Package Contents

Automotive connector wire seals, 357972842 (quantity as selected). Compatible connector housing and terminals not included.