Dometic Heki 2 Gas Strut

Dometic Heki 2 Gas Strut – Genuine Replacement Part

This is the genuine Dometic (Seitz) replacement gas strut for the Heki 2 roof vent, part number 4460000080 (formerly listed as 570E20). Over time the gas cylinder inside the strut loses pressure, and the vent lid stops holding itself open or begins to drift shut on its own. Fitting a fresh factory strut restores the correct lifting force and lets the lid hold securely in the open position again.

Key Features

• Genuine Dometic OEM part, purpose-built to the exact specification of the Heki 2 vent
• Approximately 340mm overall length to match the original factory strut
• Supplied complete with the mounting hardware needed to fit it
• Restores correct lid support so the vent stays open at any angle without drifting shut
• Straightforward like-for-like replacement – no modification to the vent frame required
• Sold individually, so you can replace one or both struts as needed

Brand Quality
Dometic is the world leader in caravan and motorhome roof ventilation, and genuine Heki spare parts are made to the same specification as the original equipment. Choosing the factory strut over a generic alternative means the correct lift force, a proper fit, and years of reliable service from your Heki 2 vent.

Brand: Dometic (Seitz)

Part Number: 4460000080 (formerly 570E20)

Type: Genuine OEM replacement gas strut

Compatible Vent: Dometic Heki 2 roof vent / skylight

Overall Length: Approximately 340mm

Quantity: Sold individually (one gas strut)

Included: Mounting hardware

Approximate Weight: 0.3kg

Application: Spare/replacement part for a weak or failed Heki 2 lid support strut

Does the price include GST?
Yes, all prices shown on the site include GST.

Do you ship NZ-wide?
Yes, we ship throughout New Zealand.

How do I know this will fit my caravan?
This strut is a genuine replacement specifically for the Dometic Heki 2 roof vent. Check that your vent is a Heki 2 (the model is usually printed on the vent frame or handle) and compare the 340mm length against your existing strut. If you're unsure, contact us with your vent details and we'll confirm fitment before you order.

What's the warranty?
Please contact us for current warranty details on this part.

Do I need to replace both struts at once?
Not necessarily. Heki 2 vents typically use a single lid strut, but if your lid feels uneven or continues to sag after fitting one new strut, it's worth checking the second side (on twin-strut installations) or the hinge condition as well.

Is fitting straightforward?
Yes. The strut is a direct like-for-like replacement that unclips from the original mounting points, so no drilling or frame modification is required. If you're not confident fitting it yourself, our team can advise or arrange installation.