OEM

Dometic Fan-Tastic Vent Dome Lock Kit - Black - K4021-09

Roll over image to zoom in Click on image to zoom

Dometic Fan-Tastic Vent Dome Lock Kit - Black - K4021-09

Name: Dometic Fan-Tastic Vent Dome Lock Kit - Black - K4021-09
Brand: Dometic
SKU: K4021-09
Price: 29.09 USD
Availability: InStock

DometicSKU: K4021-09

Added to catalog: March 11, 2026

Last product update: July 13, 2026 at 9:24 PM

$29.09 $46.25

|

Available by special order from Dometic

Availability details

Elkhart RV Parts warehouse0 ready to ship

Dometic warehousespecial order / expected-date item

Dometic is currently showing this as buyable with an expected ship date. See the delivery estimate below for the customer delivery window.

FREE Delivery Estimate September 22 – September 26

1-Hour Cancellation Window

This is a special-order item, by accepting these terms you will not be able to add to, adjust, or cancel this item once you submit your order. All sales are final and no returns or exchanges can be accommodated. Why? Because materials, vendor requests, and production scheduling begins coordination once you submit your order. With many items either “Made Fresh to Order” or fulfilled by our partners directly, you accept these terms by clicking the checkbox to the left only when you are confident this product is what you need. Read More

⚠ Please read and check the box above to accept the special-order terms before adding to cart.

Dometic K4021-09 is the black dome-lock service kit for the specified Fan-Tastic Vent. Match the dome-lock mechanism and service-part number before ordering.

Key Features

Application: Fan-Tastic Vent
Part type: Dome lock replacement kit
Color: Black

Specifications

Manufacturer	Dometic
Part number	K4021-09
Application	Fan-Tastic Vent
Part type	Dome lock replacement kit
Color	Black

Fitment and Ordering

Confirm the exact vent model and dome-lock part number in its service documentation.

Frequently Asked Questions

How do I confirm this is the right replacement?

Confirm the exact vent model and dome-lock part number in its service documentation.

What part am I ordering?

Dometic K4021-09: Fan-Tastic Vent Dome Lock Kit - Black. The listing identifies the replacement component or service kit; check the manufacturer parts diagram for any additional parts needed for your repair.

Need Help Matching Your Part?

Contact Elkhart RV Parts with your appliance model, product number and a photo of the existing part label so we can help check the replacement before you order.

Brand	Dometic
Product type	RV Vent Parts
Part number	K4021-09
Manufacturer	Dometic
Part number	K4021-09
Application	Fan-Tastic Vent
Part type	Dome lock replacement kit
Color	Black

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.