Description
Genuine Dometic Bidet Seat for MasterFlush & VacuFlush Moderno Series Toilets
Upgrade or replace your Dometic Moderno bidet seat with this genuine OEM slow-close bidet seat in white. Purpose-built for Dometic's luxury Moderno toilet styling, this bidet seat combines the residential comfort of a soft-close hinge with integrated bidet functionality — delivering an elevated, at-home bathroom experience on your boat or motorhome. If your existing bidet seat is cracked, worn, leaking, or the slow-close hinge has failed, this genuine replacement restores full function and the sleek, modern look of your Moderno toilet.
Compatible With:
- Dometic MasterFlush 8541 (Moderno macerator, bidet configuration) — 12V or 24V
- Dometic VacuFlush 4500 Series (Moderno-style vacuum toilet, bidet configuration)
Not compatible with: Dometic MasterFlush 8540 (standard, non-bidet Moderno toilet) unless your unit has the necessary bidet water supply connection already installed.
Key Features:
- Genuine Dometic OEM replacement part
- Soft, silent slow-close hinge action
- Integrated bidet function for residential-style comfort
- White finish to match Moderno's sleek, contemporary styling
- Durable, easy-to-clean construction
- Compatible with both 12V and 24V toilet systems
How to Find Your Model Number
Before ordering, check the data sticker on the base or rear of your toilet — it will list a model number such as 8540, 8541, or a VacuFlush 4500-series number. This confirms whether your toilet is bidet-configured and compatible with this seat. If you can't locate the sticker or aren't sure which system you have (macerator vs. true vacuum), contact us with a photo of your toilet's base and we'll help confirm fitment before you order.
Frequently Asked Questions
Can I add a bidet seat to my Dometic 8540 Moderno toilet?
The 8540 and 8541 share the same base toilet, with Dometic offering "bidet or slow-close lid" as interchangeable options. However, bidet function requires a dedicated water supply connection at the toilet. If your 8540 wasn't originally plumbed for a bidet, you'll need to add that water line before this seat will function as a bidet — otherwise it will operate as a standard slow-close seat only.
What's the difference between the 8540 and 8541?
The 8540 is the standard Moderno toilet with a slow-close (non-bidet) seat. The 8541 is the same toilet with a factory-installed bidet seat and the necessary water supply connection already in place.
Does this bidet seat require electrical power?
No — this is a manual, water-supply-based bidet function integrated into the seat itself, not an electric/heated bidet seat. It operates off your toilet's existing water connection.
Will this fit my VacuFlush 4500 series toilet?
Yes — the VacuFlush 4500 series shares the same Moderno-style bowl and seat mounting as the MasterFlush 8541, so this bidet seat is compatible with both, provided your 4500-series unit is bidet-configured.
Is this compatible with 12V and 24V systems?
Yes — this seat itself is not voltage-dependent, so it fits both 12V and 24V Moderno toilets. Voltage only affects your toilet's flush/control system, not the seat.
What else will I need to install this?
If your toilet doesn't already have bidet plumbing in place, you'll also need a bidet water supply line and shutoff valve. Check our related parts below.
You May Also Need
- Dometic Moderno bidet water supply line
- Dometic bidet water shutoff valve
- Dometic MasterFlush control module (8500/8600/8700/8900 compatible)
Special Order – Estimated 7–14 Business Day Lead Time
Please note: This is a special order item.
- Estimated lead time: 7–14 business days
- Lead times may vary based on Dometic manufacturing and availability
- Special order items are non-cancelable and non-returnable once the order has been placed with the manufacturer, except in the case of a warranty issue or shipping damage
- Orders containing both in-stock and special-order items may ship separately or be held until all items are available
