Rear extension for the Mercedes-Benz Marco Polo W447 & Viano Marco Polo W639 or Mercedes-Benz Marco Polo Horizon & Activity
- Gear within reach: Slide out instead of rummaging through the boot.
- Carry heavy gear: Lightweight aluminium construction supports up to 120 kg.
- Stays where you need it: Locks open and closed, even on slopes.
- Less mess inside: Enclosed tray contains dirt; removable lining simplifies cleaning.
Item no. 36245
The rear slide-out for your Mercedes-Benz Marco Polo brings camping equipment, luggage or shopping within reach from the back of your vehicle, without having to reach deep into the load area. Its lightweight construction in polished aluminium with a 120 kg load capacity makes loading and unloading easier on trips, at work and in everyday use.
Kitchen-equipped models: an 80 cm-deep tray for organised storage
Version 1 is designed for the Mercedes-Benz Marco Polo W447 and Viano Marco Polo W639 with a kitchen. Use the internal dimensions to plan your storage boxes and equipment:
- Internal tray dimensions: 93.5 cm wide x 80 cm deep.
- Maximum loading height: 27.5 cm.
- With the additional storage tray beneath the lower bed: maximum loading height of 23.5 cm.
The following box combinations are specified for this version. You can pack the boxes at home, then place them in the slide-out:
- 5 Front Runner Flat Packs.
- 3 Front Runner Wolf Pack Pro boxes and 1 Front Runner Flat Pack.
- 4 Euroboxes: two measuring 60 x 40 x 22 cm and two measuring 40 x 30 x 22 cm, with the lids included in these dimensions.
The additional storage tray beneath the lower bed sits in the bed frame to create further storage space. It is designed to hold two Expander chairs. Items such as a camping toilet or a Skotti Grill can also be stored in it. The boxes and additional storage tray are accessories and are not included in the package contents listed below.
Horizon and Activity: a 70 cm-deep tray for four Flat Packs
Version 2 is designed for the Mercedes-Benz Marco Polo Horizon and Activity W447. The tray measures 92.5 cm wide and 70 cm deep internally. It is designed for four Front Runner Flat Packs. Euroboxes can also be used for organisation; select them according to this version's internal dimensions.
Fit it to the seat rails and retain use of the rear bench
The slide-out mounts to the seat rails using four fixing screws for the kitchen version or two for Horizon and Activity. It is designed for one-person installation and can be removed again without leaving marks on the vehicle.
With either version fitted, the rear bench can still be moved right up to the bed with its extension folded down. This arrangement allows you to continue using the living area in that configuration.
Lock it in either position and remove dirt more easily
The rear slide-out features automatic locking and locks in both the retracted and extended positions. When closed, the lock holds the slide-out in place during travel. When extended, the other lock prevents it from sliding back in by itself if the vehicle is parked on a slope.
The enclosed tray helps limit the spread of dirt inside the vehicle. The kitchen version has a removable grey-black carpet, while the Horizon/Activity version has a black felt lining. The tray itself can be removed completely for cleaning or when you need to use the space differently.
Operate the front latch correctly
Incorrect handling can cause the front latch to break. Please follow the operating instructions in the Instructions tab and the product description for the replacement front latches. A replacement set is included. Further replacement parts are listed in the Spare Parts tab.
Select the version that matches your vehicle. When planning your boxes, check the internal dimensions and, for the kitchen version, the stated maximum loading height.
Package contents
1x Rear slide-out in the version ordered
4x Rear slide-out seat-rail fasteners (2 for Horizon / Activity)
1x Felt carpet
1x Replacement front latch set
Please refer to the Instructions tab for the installation instructions.
The rear slide-out is shipped via DHL bulky goods. These parcels can occasionally take longer to arrive than a standard DHL parcel. Delivery times between 2 and 10 days.
Which version fits which vehicle?
Version 1 is designed for the Mercedes-Benz Marco Polo W447 and Viano Marco Polo W639 with a kitchen. Version 2 is for the Mercedes-Benz Marco Polo Horizon and Activity W447. Choose the version according to your vehicle model and whether it has a kitchen.
What are the internal dimensions and maximum loading heights?
The kitchen version measures 93.5 cm wide and 80 cm deep internally. Its maximum loading height is 27.5 cm, or 23.5 cm with the additional storage tray beneath the lower bed. The Horizon/Activity version measures 92.5 cm wide and 70 cm deep internally. The stated loading heights apply only to the kitchen version.
What is the load capacity and what is the slide-out made from?
Both versions are made from polished aluminium and have a load capacity of 120 kg. The aluminium construction combines low weight with the stated load capacity.
Which storage box combinations fit in the tray?
The kitchen version is designed for five Front Runner Flat Packs, alternatively three Front Runner Wolf Pack Pro boxes and one Front Runner Flat Pack, or four Euroboxes. The Eurobox combination consists of two measuring 60 x 40 x 22 cm and two measuring 40 x 30 x 22 cm, with lids included in these dimensions. The Horizon/Activity version is designed for four Front Runner Flat Packs. Boxes are accessories and are not included in the listed package contents.
How is the slide-out installed, and can the rear bench still be moved?
It attaches to the seat rails with four screws for the kitchen version and two for Horizon and Activity. One person can carry out the installation, and removal leaves no marks on the vehicle. With either version fitted, the rear bench can still be moved up to the bed with its extension folded down.
How does the locking system work, and what should be considered during use?
The rear slide-out features automatic locking and locks in both the retracted and extended positions. The closed position is held during travel; the open position prevents the slide-out from sliding back in by itself when the vehicle is parked on a slope. Incorrect handling can cause the front latch to break. Follow the operating instructions in the Instructions tab and the replacement part's product description.
How can the tray be cleaned or removed?
The enclosed tray helps limit the spread of dirt inside the vehicle and can be removed completely. The kitchen version has a removable grey-black carpet, while the Horizon/Activity version has a black felt lining. Removing the tray allows you to clean the area or use the space differently.
What is the additional under-bed storage tray used for?
For models with a kitchen, an additional storage tray can be placed in the lower bed frame. It is designed for two Expander chairs and can also hold items such as a camping toilet or a Skotti Grill. With this tray fitted, the rear slide-out's maximum loading height is 23.5 cm. The additional storage tray is not included with the rear slide-out.
What is included in the package?
The package contains one rear slide-out in the version ordered, four seat-rail fasteners or two for Horizon and Activity, one felt carpet, one replacement front latch set and one replacement rear latch. Installation instructions are in the Instructions tab.
How is the rear slide-out shipped, and what delivery time is stated?
It is shipped via DHL bulky goods. The stated delivery time is 2 to 10 days. Bulky-goods parcels can occasionally take longer to arrive than standard DHL parcels.
optional *
plus 59€.We need your vehicle for 1 hour for the installation.
The order creation for optional installation service is done manually, in this case please do not order online.
| Brand | 1sternehotel |
| Item No. | 36245 |
| Content | 1 piece |
| Condition | New |
| Weight | 16500 g |
| Customs tariff number | 87089997 |
| Manufacturer | Axel Seidel Peter-Seifert Str. 10 36129 Gersfeld Germany hello@1sternehotel.de |










