Dometic Fantastic Vent RJ-11 Wire Harness Kit 25 ft - K6040-08

DometicSKU: K6040-08
Added to catalog: March 11, 2026
Last product update: July 13, 2026 at 9:17 PM
$22.99
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Available from Dometic warehouse (435 units)
Availability details
Elkhart RV Parts warehouse0 ready to ship
Dometic warehouse435 available
Ships after Dometic warehouse processing. See the delivery estimate below for the current expected window.
FREE Delivery Estimate July 30 – August 7
1-Hour Cancellation Window

1-Hour Cancellation Window

You'll have 1 hour after placing your order to update your shipping address or cancel completely.

After that, we begin coordinating with our vendors to fulfill your order — at that point, cancellations and address changes usually aren't possible.

If you're unsure about anything, please reach out before ordering or cancel within the window.

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OEM Dometic replacement part K6040-08.

  • Dometic description: RJ-11 WIRE HARNESS 25'
  • Dometic product description: Dometic Fantastic Vent RJ-11 Wire Harness Kit, 25' (For models FV4200 - FV6300 Series Wall Controllers)
  • Product area: Service Parts
  • Package size: 12.00 in. x 5.00 in. x 1.00 in.
  • Package weight: 1.00 lbs.

Verify the part number against your Dometic model or parts diagram before ordering.
100% Authentic OEM Parts

Factory-Fresh OEM Parts — the same brands installed in new RVs straight from Elkhart. Genuine, name-brand components made to order — never generic, never outdated. Sourced directly from the original RV manufacturers for perfect fit and factory-level quality.

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