Line photo: Jayco publishes one photo for the Seneca line, so it may show another floorplan. Windows and slides can differ from the 37K described here.

Jayco · Class C · 2027

Jayco Seneca 37K

Freightliner's S2RV Plus chassis and a Cummins diesel make the Seneca a Super C, the heavy-duty end of Jayco's Class C range. The 37K is a king-bed couples plan whose Onan generator burns the same diesel as the engine, and the kitchen has a two-burner induction cooktop.

Approx. price: ~$380,693; maker MSRP
Length: 39.3 ft
Sleeps: 6

Specifications

Size

Exterior length: 39.3 ft
Exterior height: 13.3 ft
Sleeps: 6

Tanks and power

Fresh water: 72 gal
Gray water: 51 gal
Black water: 40 gal
Factory solar: 200 W
House battery: Dual 12V chassis batteries; (4) 6V AGM (220Ah) house batteries on slideout tray

Chassis

Chassis: Freightliner® S2RV Plus chassis
Engine: Cummins ISB-300 6.7L
Fuel: Diesel

Standard equipment named by the maker

Automatic hydraulic leveling jacks
Onan® 8,000W Quiet Diesel generator and auto-gen start
200W solar panel with dual controller
Deluxe heated, remote-controlled, side-view mirrors
Suburban tankless water heater
Electric fireplace
2-burner induction cooktop
Walk-around, king-size bed with power head lift, bedspread and nightstands

Weights

2027 maker figures

GVWR: 31,000 lb
Dry weight (UVW): not published
Occupant + cargo (OCCC): not published
Towing capacity: not published

What these weights mean →

Size, to scale

051015202530354045 ft

Jayco Seneca 37K · 39.3 ft long · 13′4″ tall

Drawn to one scale from each camper's listed length and, where the maker publishes it, its exterior height. Outlines are typical for the camper type, not traced from this model. The figure is a 6 ft person. The dashed blue line is 25 ft, the length about 93% of national park campgrounds accept.