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Two cylindrical marine cable connectors, one black one red, threaded posts visible

Blue Sea Systems

Blue Sea Systems 2018 Dual PowerPost Cable Connectors 5/16 3/8 marine electronic

SKU CH-G89G-H8YY9

Dual PowerPost connectors extend outboard engine factory cables and include black and red insulators

  • Product typeAccessories
  • Dual PowerPost connectors extend outboard factory cables
  • One black and one red insulator simplifies polarity identification
  • New marine electronics accessory for reliable power connections
  • 2018 model designed for outboard engine installations
  • Type classification confirms accessory role in marine systems

Dual PowerPost Cable Connectors

Blue Sea Systems Dual PowerPost Cable Connectors model 2018 are new marine electronic accessories that extend factory cables on outboard engines. The set includes one black insulator and one red insulator for clear polarity identification during installation.

Boaters extending outboard power leads

These connectors suit anyone lengthening the original power cables on an outboard motor and who need a pair of posts with colour-coded insulators. Installers who require different stud sizes, additional posts, or a different connector style will need another solution.

Two posts with 5/16 and 3/8 studs

The deciding specification is the mixed stud arrangement: one 5/16" post and one 3/8" post in a single kit. If your extension calls for this exact combination the set fits; if both posts must share the same stud size you must choose a different product.

How it compares

Measured against everything we stock in Boat Audio & Electronics, at today’s prices. Recalculated every night.

Price $17.99
Cheaper than about 85% of the 312 comparable items (median $69.49).

Specifications

Product
Product typeAccessories

Questions about this item

What does the 2018 model number tell me about how these PowerPost connectors perform on my boat?

The 2018 is Blue Sea Systems' catalogue reference for this dual-connector set; it identifies the specific pair of 5/16 in and 3/8 in studs supplied for extending outboard engine cables.

Which wiring standard do the 5/16 in and 3/8 in studs follow, and what current does that limit me to?

The studs use common SAE marine threading; actual current capacity depends on the cable gauge and crimp quality you install, not on the connector alone.

What physical space and mounting hardware do I need to fit both connectors on my transom?

Each post requires a clearance hole for its stud size (5/16 in or 3/8 in) plus room for the coloured insulator boots; no specialised bracket is included.

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