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Used 2017 Forest River Sierra 378FB

Oklahoma City, OKFun Town RVDirections

Sleeps5
Length42' 7"
Dry weight12,455 lb
GVWR15,500 lb

About this RV

Stepping inside this Sierra 378FB fifth wheel by Forest River you will find triple slide outs, a rear living area, and a front bathroom with his/her sinks! To the left of the entrance there is a slide with a free-standing dinette and an entertainment center with a fireplace below the entertainment center. Along the opposite side of the fifth wheel the slide has a tri-fold hide-a-bed sofa, large pantry, three burner range, and refrigerator. In the middle of the kitchen you will find an island with a double kitchen sink. Along the rear wall there is a nice comfortable sofa. Before you step up the stairs there is a convenient half bath off of the kitchen. At the top of the stairs, you will immediately enter into the bedroom. There is a slide out with a queen bed or you can choose an optional king bed. Across from the bed there is a dresser with a TV box. In the front bathroom you will find a walk-in shower with seat, an area that has been prepped for a washer and a dryer, two sinks with double mirrors above the sinks, and a toilet. Along the front wall of the fifth wheel there is a large wardrobe with shelves.

Specifications as listed by the dealer

Type
Fifth wheel
Condition
Used
Year
2017
Make
Forest River
Model
Sierra 378FB
Stock number
220813A
VIN
4X4FSEP24HJ043362
Slide-outs
3
Hitch weight
2,096 lb
Sleeps
5
Length
42 ft 7 in
Ext Width
8 ft
Ext Height
13 ft 2 in
Int Height
7 ft
GVWR
15,500 lbs
Dry Weight
12,455 lbs
Cargo Capacity
3,045 lbs
Fresh Water Capacity
60 gals
Grey Water Capacity
134 gals
Black Water Capacity
52 gals
Tire Size
16"
Furnace BTU
35,000 btu
Available Beds
Queen
Refrigerator Type
Stainless
Refrigerator Size
9 cu ft
Cooktop Burners
3
Number of Awnings
1
Axle Weight
7,000 lbs
LP Tank Capacity
30
Water Heater Capacity
10 gal
Water Heater Type
DSI
AC BTU
15,000 btu
TV Info
LR 40" LED TV, Ext. TV
Awning Info
20'
Axle Count
2
Washer/Dryer Available
Yes
Number of LP Tanks
2
Shower Type
Shower w/Seat

Features

  • Color match high gloss gel coated colored exterior fiberglass
  • Painted two tone aerodynamic fiberglass front cap with improved turning radius
  • Entrance door(s) with integrated night shade
  • Docking station: easy winterization, hot and cold spray port, black tank flush, pull valves for tanks
  • Enclosed and heated dump valves
  • Large tinted windows with 80/20 UV prohibitor
  • Hickory Springs® radius triple steps with 9" riser (no pinched fingers)
  • Dometic® "One-Touch" electric awning with LED light strip
  • Power front jacks with spring loaded snap pins
  • 16" Radial tires (E-Rated)
  • Automotive-style fender skirts
  • Hitch light
  • Exterior kitchen (per floorplan)
  • Porch light with interior switch
  • 30 lb double LP tanks with auto change over
  • Roof ladder
  • 2 LED lighted exterior speakers
  • Rain gutters with extra long drip spouts (prevents black streaking)
  • Insulated heavy duty slam lock baggage doors
  • Exterior foldable grab handle
  • Unobstructed pass-through storage area with cable jacks and 110V outlet
  • Two (2) spray ports with 25' hose (one on each side)
  • Upgraded aluminum rims
  • 7,000 lb axles
  • Friction hinge entry door
  • One Touch" Dometic® electric awning w/LED light strip
  • 15" Radial tires-D Rated
  • Exterior refrigerator (per floorplan)
  • 30 lb. double LP tanks with auto change over
  • 2 exterior speakers
  • Unobstructed pass-through storage area
  • 4,400 Lb. axles
  • 84" interior height with 6' 4" slide heights
  • Stainless steel appliances
  • Beauflor® rustic wood plank linoleum
  • Decorative backsplash
  • Four color coordinated interiors (Mink, Merlot, Pebble, Beachwood)
  • Soft close full-extension drawer glides
  • Stone cast under mounted kitchen sink
  • Washer/dryer prep

Questions about this 2017 Forest River Sierra 378FB

Is it still for sale?

Fun Town RV’s website listed it for sale on November 5, 2026. RV Shift checks dealers’ websites about once a day, so ask the dealer to be sure.

What does it take to tow it?

RV Finder’s estimate: it needs a vehicle rated to tow about 13,700 lb, with a fifth-wheel hitch. That is its 12,455 lb dry weight plus 1,200 lb for water and gear, rounded up to the next 100 lb. RV Finder shows whether it is within your vehicle’s published rating, from the maker’s own towing guide, and checks tongue weight and payload too. Confirm your numbers in your owner’s manual and on the sticker in the driver’s door jamb. Check it in RV Finder

How do I ask the dealer about it?

Use the Check availability form on this page. Your message comes to RV Shift and we pass it to Fun Town RV. You can also call Fun Town RV at (833) 386-8696.

Listing and photos: Fun Town RV. Details come from the dealership and can change; confirm them before you buy.

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