2009 Keystone Montana Big Sky 3665RE

Used Fifth Wheel in Mifflintown, Pennsylvania, 17059

$15,950.00
Est. Payment: $161/mo
2009 Keystone Montana Big Sky 3665RE - Used Fifth Wheel For Sale by Juniata Valley RV in Mifflintown, Pennsylvania features Microwave, Powered Landing Legs, Heated Underbelly, Solid Surface Countertops, Enclosed Underbelly
2009 Montana Big Sky 3665RE by Keystone from Juniata Valley RV in Mifflintown, Pennsylvania
Used 2009 Keystone Montana Big Sky 3665RE available in Mifflintown, Pennsylvania

Unit Specs

  • As-Is
  • Blow Out Price
  • In Stock
  • New Arrival
  • Recent Trade-In
  • Stock #01836
  • Year2009
  • ManufacturerKeystone RV
  • Make Keystone
  • ModelMontana Big Sky
  • Floorplan3665RE
  • Floorplan LayoutFront Bedroom
    Kitchen Island
    Mid Kitchen
    Rear Entertainment
    Rear Living Area
  • Type Fifth Wheel
  • ConditionUsed
  • Length37' 3"
  • Width8' 0"
  • Height12' 9"
  • Price $19,851.00
  • Sale Price $15,950.00
  • Need to know your payment? Use our RV Loan Calculator!
  • Sleeps4
  • Water Capacity (Fresh)66 gal
  • Water Capacity (Black)50 gal
  • Water Capacity (Grey)93 gal
  • Air Conditioners2
  • Slideouts4
  • Payload Capacity3625 lbs
  • Dry Weight12,280 lbs
  • Tow/Hitch Weight2040 lbs
  • # Axles2

Keystone Montana Big Sky Fifth Wheel Towable RV

If you’re searching for a Keystone Montana Big Sky Fifth Wheel Towable RV that’s built for comfort and convenience, this 2009 model (Stock #01836) is a standout option. Designed as a towable fifth wheel, it offers a roomy layout with 4 slide-outs and space for 4 people—ideal for weekend getaways or longer trips.

Spacious Layout & Floorplan Options

The Montana Big Sky (Floorplan 3665RE) measures approximately 37 feet 3 inches in length and features a rear living area with a rear entertainment setup. Additional layout styles associated with this model family include front bedroom, kitchen island, and mid kitchen configurations.

Comfort, Climate, and Everyday Living

Inside, you’ll find practical living features and climate support for changing weather. This unit includes furnace, a heated water tank, and a water heater to help keep daily routines running smoothly. For warmer conditions, it comes with air conditioning and a second roof A/C, with 2 air conditioners total.

Kitchen & Entertainment Conveniences

Meal prep and downtime are covered with a full kitchen setup, including a microwave, oven, refrigerator, and stove with a stove cover. For relaxing evenings, enjoy an included stereo system plus TV and a TV antenna.

Key Features & Specifications

  • 4 slide-outs for added interior space
  • 50 Amp service and detachable power cord
  • Enclosed & heated underbelly plus enclosed water tank
  • Auxiliary battery, battery charger, and converter
  • Power awning and slide-out awning
  • Fresh water capacity: 66 gallons; Black/Gray: 50/93 gallons

Exterior & Storage-Friendly Design

Travel-ready touches include alloy wheels, pass-thru storage, ladder, roof vent(s), skylight, and a spare tire kit. You’ll also find an external shower, screen door, and tinted windows for added comfort and usability.

Ready to see this 2009 Keystone Montana Big Sky Fifth Wheel Towable RV in person? Contact the dealer today or schedule a viewing to explore the layout, features, and condition firsthand.



View a video of this 2009 Keystone Montana Big Sky 3665RE RV on YouTube!

2009 Keystone Montana Big Sky 3665RE Features


  • Appliances
    Enclosed Water Tank, Furnace, Heated Water Tank, Microwave, Oven, Refrigerator, Stove, Stove Cover, Water Heater
  • Electrical
    50 Amp Service, Air Conditioning, Auxiliary Battery, Battery Charger, Converter
  • Equipment
    Cable Prepped, Propane, Sewer Hose & Carrier, Stereo System, TV, TV Antenna
  • Exterior
    Alloy Wheels, Detachable Power Cord, Enclosed Underbelly, External Shower, Heated Underbelly, Ladder, Pass Thru Storage, Power Awning, Powered Landing Legs, Roof Vent, Screen Door, Second Roof A/C, Skylight, Slideout, Slide-out Awning, Spare Tire Kit, Tinted Windows, Upgraded Insulation Package
  • Interior/Furnishings
    Ceiling Fan, Central Vacuum, Dinette, Fireplace, Glass Shower Door, Kitchen Sink, Living Quarters, Medicine Cabinet, Non-Smoking Unit, Overhead Cabinetry, Pantry, Pet Friendly, Queen Bed, Recliner(s), Roof Vents, Self Contained, Shower, Sofa Bed, Solid Surface Countertops, Toilet, Wardrobe(s)
Stock #: 01836
Dealer Info

Juniata Valley RV

285 Industrial Circle
Mifflintown, PA 17059

Member Since 2011

See 196 Reviews

Unit Specs

  • As-Is
  • Blow Out Price
  • In Stock
  • New Arrival
  • Recent Trade-In
  • Stock #01836
  • Year2009
  • ManufacturerKeystone RV
  • Make Keystone
  • ModelMontana Big Sky
  • Floorplan3665RE
  • Floorplan LayoutFront Bedroom
    Kitchen Island
    Mid Kitchen
    Rear Entertainment
    Rear Living Area
  • Type Fifth Wheel
  • ConditionUsed
  • Length37' 3"
  • Width8' 0"
  • Height12' 9"
  • Price $19,851.00
  • Sale Price $15,950.00
  • Need to know your payment? Use our RV Loan Calculator!
  • Sleeps4
  • Water Capacity (Fresh)66 gal
  • Water Capacity (Black)50 gal
  • Water Capacity (Grey)93 gal
  • Air Conditioners2
  • Slideouts4
  • Payload Capacity3625 lbs
  • Dry Weight12,280 lbs
  • Tow/Hitch Weight2040 lbs
  • # Axles2

Estimated Payment-

Interest Rate % *(W.A.C.)
Term Years
Down Payment $
*W.A.C. = With approved credit

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Juniata Valley RV
Juniata Valley RV

285 Industrial Circle
Mifflintown, PA 17059

Phone: Click to Call

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