Seneca

2026 Seneca

Starting at $370,193

Enjoy all the comforts of home wherever you are in the Jayco Seneca. This powerful diesel Super C is built on the Freightliner® S2RV Plus chassis and powered by a Cummins® ISB 6.7L 360HP diesel engine. With a 100-gallon fuel tank, you can cover more ground between stops and reach your destination faster. It’s a great fit for travelers who want diesel performance and an impressive 12,000-pound tow capacity. The JRide® Premium handling package makes every trip smooth and comfortable thanks to a computer-balanced driveshaft, rear air suspension, a heavy-duty rear stabilizer bar and SACHS shocks. Full air brakes provide strong, confident stopping power, especially on grades, and improve ride stability while absorbing road vibrations. In the Seneca, the ride itself becomes part of the adventure.

Once you've arrived at your destination, carpeted pass-through basement storage compartments make unloading gear quick and simple. Extend you electric awning with LED lights right from your phone thanks to the Firefly total coach control system. Once you have shade, open up your exterior entertainment center with JBL® outside speakers and an LED HD Smart TV mounted on a swivel bracket to complete your tailgate or camping setup. You can even add a 12V cooler on a slide-out tray for easy access to a cold drink once you're ready to watch the game or enjoy the campfire.

Inside the Seneca, large Lippert® 4000 Series windows let you enjoy the view while integrated cassette day and night shades add privacy and style. After dark, the overhead bunk becomes the perfect spot for stargazing through the panoramic front window in the one-piece fiberglass cap. Even the less glamorous parts of RVing are easier in the Seneca. The Thetford® Sani-Con® Turbo macerator system offers a fast, clean way to empty your black tank. The macerator helps prevent clogs, the power pump lets you dump even uphill and the retractable hose streamlines the whole process—no need to connect or disconnect each time.

With premium performance and luxury amenities, the Seneca Super C makes every trip feel like a first-class adventure.

Seneca 37M Rear Interior with Modern Farmhouse Interior Design
Seneca 37K with Ashland Full-Body Paint
Seneca 37K with Ashland Full-Body Paint
Electric Patio Awning with LED Lights
Seneca 37K Featuring Jayco's One-Piece Seamless Front Cap with Automotive Bonded Panoramic Window MORE PHOTOS
Thetford® Sani-Con Turbo Macerator System
Optional Slide-Out Tray with 12V Refrigerator Cooler in Basement
12,000 lb. Rear Hitch Receiver
Seneca 37K with Ashland Full-Body Paint
Seneca

Seneca Floorplans and Prices

The Seneca Super Class C offers a comfortable, roomy ride with unbridled power. With three floorplans all measuring 39' 4" in overall length, choosing the right floorplan all comes down to the most comfortable configuration for you and your travel companions. If a bath and a half is a must, you'll want to opt for the 37K. This floorplan sleeps up to 6 and features a large kitchen and a 93" reclining sofa across from an entertainment center with a 40" TV and fireplace. The 37M sleeps up to 8 and is incredibly spacious thanks to opposing slides in the living room and bedroom. Not only does the extra space make this floorplan great for entertaining, but with power theater seating, a jack-knife sofa and a booth dinette there is plenty of space to gather with those you love the most. For those wanting dedicated bunks, the 37L sleeps up to 9 in comfort and style.

Starting at $370,193
Sleeps up to 9
Length 39' 4" - 39' 4"

See Floorplans »

Standard Features and Options

Standard Driving Equipment

  • Freightliner® S2RV Plus chassis
  • GVWR- 31,000 lb.
  • GCWR- 43,000 lb.
  • Cummins® ISB 6.7L 360 HP diesel engine with 800 ft.-lb. torque
  • Allison® 3000 MH automatic transmission
  • 185-amp alternator
  • G-rated highway tires- 275/80R22.5
  • Alcoa® aluminum wheels
  • Engine exhaust brake
  • 12,000 lb. rear hitch receiver
  • 7-pin plug
  • Dual 12V chassis batteries
  • 100 gal. fuel tank
  • 10 gal. DEF tank
  • 6-way power driver and passenger seats
  • Deluxe heated, remote-controlled, side-view mirrors
  • Tilt steering wheel
  • Cruise control
  • Detroit automatic wipers/headlights
  • Power windows and door locks
  • Auxiliary start switch

Standard Exterior Equipment

  • StrongholdVBL™ roof, floor and sidewalls
  • Bead-foam insulation (R-24 max roof, R-9 max floor and R-8 max walls)
  • One-piece, seamless, crowned fiberglass roof
  • Premium Sikkens full-body paint
  • Automatic hydraulic leveling jacks
  • Entrance door with industry’s largest travel-view window
  • Electric-powered entrance step
  • Slideout awning(s)
  • Exterior entertainment center with JBL® outside speakers and LED HD Smart TV mounted on swivel bracket 
  • Winegard® In-motion satellite dish
  • Carpeted, full pass-through storage compartments with Keyed Alike lockable slam-latch doors
  • Thetford® Sani-Con Turbo macerator system
  • Third brake light
  • Cable TV hookup with RG-6 coax and video selector switch
  • Winegard 2.0 Wi-fi/4G antenna
  • Onan® 8,000W Quiet Diesel generator and auto-gen start
  • 200W solar panel with dual controller
  • (4) 6V AGM (220Ah) house batteries on slideout tray
  • Transfer switch with reverse polarity protection
  • 24.5 gal. propane tank (83 lb.)
  • LP quick-connect hookup
  • Exterior utility center
  • Winterization drain system
  • Black tank flush
  • Outside shower
  • 12V demand water pump
  • Water filtration system

Standard Interior Equipment

  • Custom-molded ABS surround in cab-over area
  • Overhead bunk with 750 lb. capacity
  • Firefly total coach control system with wall-mounted touchscreen and mobile app
  • 84 in. interior ceiling height with padded vinyl ceiling
  • High-intensity, recessed LED ceiling lights
  • LED-lit fascia
  • Vinyl plank flooring
  • Hardwood cabinet doors and drawer fronts
  • Soft-close cabinet doors and drawers
  • Deluxe hidden cabinet hinges
  • Ball-bearing drawer guides
  • 30,000 BTU auto-ignition furnace
  • Suburban tankless water heater
  • Electric fireplace
  • Jayco-exclusive, easy-operation legless dinette table
  • 2-point lap safety belts in all designated seating locations
  • Car seat tethers (select floorplans)
  • Integrated day/night cassette shades
  • LED HD Smart TV in living area
  • JBL® audio system
  • Wood-framed kitchen window
  • 2-burner induction cooktop
  • LED-lit, solid-surface kitchen countertops with recessed stainless steel sink and sink covers
  • Walk-around, king-size bed with power head lift, bedspread and nightstands
  • USB port and wireless charging in nightstands
  • Under-bed storage
  • LED HD Smart TV in bedroom
  • Large wardrobes
  • Bunks with industry-exclusive 300 lb. capacity each (37L) 
  • Shower with decorative surround, glass door, skylight and light
  • Aqua View® SHOWERMI$ER™ water management system
  • Porcelain toilet with foot flush
  • Recessed stainless-steel bathroom sink
  • Powered roof vent in bathroom with wall switch
  • Smoke alarm
  • Carbon monoxide detector
  • Fire extinguisher

Customer Value Package (Mandatory)

  • JRide® Premium: Computer-balanced driveshaft, rear air suspension, heavy-duty rear stabilizer bar, full air brakes, SACHS shocks
  • One-piece, seamless, fiberglass front and rear caps
  • Automotive-bonded, panoramic window in front cap with power shade
  • Lippert™ 4000 series dual-pane frameless bonded windows
  • (2) 15,000 BTU A/C units with heat pump on main A/C
  • Electric patio awning with LED lights
  • 2,000W pure sine wave inverter
  • Power cord reel with 50-amp service
  • Sony® infotainment center with tilt/swivel, Apple® CarPlay and Android Auto™
  • Backup and side-view cameras
  • Residential refrigerator
  • Convection microwave oven

Options

  • Power theater seating (37L) (STD on 37M)
  • Hide-a-bed sofa ILO theater seating (37M)
  • Combination washer/dryer (37L, 37M)
  • Stackable washer/dryer (37K)
  • Starlink satellite internet system with KING Jack™ antenna IPO Winegard Connect 2.0
  • Canadian Shaw® TRAV’LER® satellite dish
  • Winegard® TRAV’LER® satellite dish - DIRECTV®
  • Slide-out tray with 12V refrigerator cooler in basement

Standard Features
and Options

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Superior Construction Elements

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Enjoy a quiet and comfortable drive thanks to this powerful blend of ride and handling features. JRide® Premium upgrades on the Seneca include:

 - Computer-balanced driveshaft

 - Rear air suspension

 - Heavy-duty rear stabilizer bar

 - Full air brakes

 - SACHS shocks

Jayco RV's StrongholdVBL® vacuum-bond process applies 144 tons of pressure to wall components (fiberglass exterior siding, welded aluminum framing, block foam insulation, metal backers and interior wall panels) for 16 to 18 minutes for an incredibly strong and durable product. All sidewalls, floors and roofs are built by Jayco RV in a temperature and humidity-controlled facility.

The Seneca's one-piece, seamless front cap resists wear and tear like fading or moisture damage over the years. An automotive-bonded panoramic window with a power shade in the front cap lets in plenty of natural light.

A crowned one-piece fiberglass roof provides unmatched durability.

The overhead bunk in the Seneca boasts a weight capacity of 750 lbs. This is 300 lbs. more than the industry standard and allows owners to sleep two full-sized adults or store extra gear while traveling.

Not only is solar power environmentally friendly, but it also reduces the cost and load of electrical use in your motorhome. A standard 200W solar panel with a dual controller will monitor and charge your house and chassis' batteries simultaneously.

Easily access all of your gear with the Seneca's carpeted, full pass-through storage compartments with lockable Slam-latch™ doors

Seneca's dual-pane, tinted safety-glass frameless windows make exterior maintenance easier than ever and give the motorhome a sleek, modern look.

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