Dometic SlideTopper Awning Extension Kit - 18" Black - Part# 3315009.018U

DometicSKU: 3315009.018U
Added to catalog: March 10, 2026
Last product update: June 6, 2026 at 3:38 AM
Last in stock: Apr 12, 2026

Sale price$58.99 Regular price$93.79
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In stock (38 units), ready to be shipped
FREE Delivery Estimate June 9 – June 12
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.

Extend the coverage of your Dometic SlideTopper awning with this 18-inch extension kit. Designed to increase shade and weather protection on your RV, this black extension attaches seamlessly to compatible SlideTopper awning systems, giving you extra overhang where you need it most.

Key Features

  • 18-inch extension length for increased awning coverage
  • Black finish matches standard Dometic SlideTopper awnings
  • Easy bolt-on installation to existing SlideTopper systems
  • Durable aluminum and fabric construction
  • Provides additional shade and rain protection
  • OEM Dometic part for guaranteed compatibility

Technical Specifications

Specification Details
Extension Length 18 inches
Color Black
Material Aluminum frame with fabric
Part Number 3315009.018U
Type SlideTopper Awning Extension Kit

Frequently Asked Questions

Q: Will this extension kit fit my Dometic SlideTopper awning?
A: This kit is designed for Dometic SlideTopper awning systems. Check your awning model to confirm compatibility before ordering. If you're unsure, contact our support team with your RV model and awning specifications.

Q: How difficult is the installation?
A: The extension kit uses a bolt-on design that attaches to your existing SlideTopper system. Most RV owners can complete installation with basic tools. Refer to the included instructions or consult a professional if needed.

Q: What's the difference between an extension kit and a replacement awning?
A: An extension kit adds extra length to your current awning for more coverage. A replacement awning is a complete new unit. This kit is ideal if your existing awning is in good condition but you need more shade.

Why Choose Elkhart RV Parts

We specialize in hard-to-find Dometic replacement parts for RV owners who need genuine OEM components. Shipping directly from Elkhart, Indiana—the RV capital of the world—we stock authentic Dometic parts with expert support to help you find exactly what you need. When you order from us, you're getting quality parts backed by RV industry knowledge.

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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