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Battery Cable Flanged Bulkhead Connector + Insulator Boot - Heavy Duty Weatherproof 12V Copper Core 3/8 Post, 550 Amp Max Rating – for Marine, Solar, Car Audio - Made in the USA (Black & Red)

  • Based on 56 reviews
Condition: New
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Availability: In Stock.
Fulfilled by Amazon

Arrives Wednesday, Jul 23
Order within 8 hours and 19 minutes
Available payment plans shown during checkout

Color: Red + Black


Features

  • IP65 Weatherproof Design - Protect your electrical system from the elements and pass current through a panel or bulkhead up to 13/32" (0.40") thick. Includes a reinforced silicone gasket for the flange of the connector and a boot for the terminal post to keep water, dirt, and debris out
  • High Energy Transfer - The nickel-plated steel 3/8" post and solid copper core allow higher torque than conventional bulkhead connectors with brass shaft. They are continuously rated for 440 amps @ 12V, or a maximum of 550A @12V for up to 12 minutes with a 80% duty cycle. Max voltage rating of 48vDC
  • Easy to Install - A 1.375" hole is all the connector needs to pass through the panel and a large hex nut secures it on the back side. The 4 holes of the flange allow you to use screws or bolts to further secure the connector and prevent any rotation
  • Heavy Duty Construction - The body is made of glass-filled Nylon, the core is made from copper, the silicone gasket is fiberglass reinforced, and the insulator boot has a IP65 weatherproof rating and meets USCG, ISO and ABYC safety requirements for energized terminals
  • Proudly Made in the United States - We are USA based, firefighter-owned, and we stand behind our products. All our connectors and parts are manufactured using high-quality materials. We understand it takes reliable power to get the job done right, so we only offer the best of the best

Manufacturer: ‎R2X Racing


Brand: ‎R2X Racing


Item Weight: ‎12.3 ounces


Package Dimensions: ‎7.2 x 3.35 x 2.32 inches


Country of Origin: ‎USA


Manufacturer Part Number: ‎R2X-WPFBC-38


Date First Available: August 30, 2021


Frequently asked questions

If you place your order now, the estimated arrival date for this product is: Wednesday, Jul 23

Yes, absolutely! You may return this product for a full refund within 30 days of receiving it.

To initiate a return, please visit our Returns Center.

View our full returns policy here.

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Leasing options through Acima may also be available during checkout.

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Top Amazon Reviews


  • This is a great passthrough!
Color: Red
I used this to bring power forward through a bulkhead and it works and looks great! You just have to heed the warnings on proper torque for the passthrough bolt. I swapped out the included bolts and used Nylon lock-nuts for securing the cable lugs.
Reviewed in the United States on January 7, 2022 by S. Shook

  • Amazing
Color: Red + Black
Absolutely perfect and good quality! A little expensive but totally worth it!!! They even give torque specs to make sure you get the best cleaning force without ruining stud. And customer service is responsive and very accommodating!!!
Reviewed in the United States on May 2, 2023 by Michael M. Michael M.

  • Good quality
Color: Red
Worked great
Reviewed in the United States on May 14, 2024 by Brandon Garonzik

  • Good product
Color: Red + Black
Wish I could get the covers on both sides, can they be ordered ?
Reviewed in the United States on February 13, 2024 by Paul Sharp

  • they are big....
Color: Red + Black
i put these on my build for power and ground... all i can say is... they are big. and only come with 1 set of covers. really good design, but probably overkill on size. should work well.
Reviewed in the United States on August 13, 2023 by robert sampson

  • Good Bulk-Head connctor
Color: Red
Well made, decent product.
Reviewed in the United States on April 12, 2023 by KC

  • Best quality
Color: Red + Black
Ease of use
Reviewed in the United States on November 2, 2021 by Larry

  • Fast shipping and looks perfect for what I wanted
Color: Red
Automotive firewall power
Reviewed in the United States on May 5, 2022 by BEAR

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