2017 Keystone RV Alpine 3661fl Specs

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This RV's GVWR
15,500 lbs
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Safe Towing Capacity
80%
Under capacity Safe zone Max rating

Mint Score

Overall Score
2.9
out of 5
Tow-Ready Score
2.7/ 5
Living Space & Layout
3.4/ 5
Comfort & Features
3.2/ 5
Storage Space
2.0/ 5
Off-Grid & Campsites
3.2/ 5

About the 2017 Keystone RV Alpine 3661fl

With its impressive six slide-outs, the 2017 Alpine 3661FL offers an expansive living space that feels like a home on the road. You’ll appreciate the well-appointed kitchen and cozy fireplace, perfect for family gatherings or entertaining friends. This fifth wheel sleeps up to six, accommodating everyone comfortably, while the 39.1-foot length ensures ample room without sacrificing maneuverability. Ideal for families or couples who value space and comfort, this RV is designed for memorable adventures without compromising on livability.

What We Love

Large Pass-Through Storage Exterior Speakers Vinyl Flooring Throughout Rear Bedroom Layout Water Heater Bypass

Consider This

Heavy Rig - Requires 3/4-Ton+ Long Rig - Limited Campsite Options High Hitch Weight (1,200+ lbs)

Specifications by Category

View specs, shop products, or tap "More" for details.

Towing & Dimensions

Specs Value Buy Shop All Top 5
GVWR 15500 lbs - - -
Dry Weight 13620 lbs - - -
Hitch Weight 2950 lbs - - -
Payload Capacity 1880 lbs Coil SumoSprings Shop Suspension Kits -
Length 469 in Furrion Backup Camera Shop Cameras -
Width 96 in Clip On Mirrors Shop Mirrors -
Exterior Height 160 in Telescoping Ladder Shop Ladders -
Specs
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GVWR
15500 lbs
Dry Weight
13620 lbs
Hitch Weight
2950 lbs
Payload Capacity
1880 lbs
Details
Recommended
Coil SumoSprings
4.5
Length
469 in
Details
Recommended
Furrion Backup Camera
4.5
Width
96 in
Details
Recommended
Clip On Mirrors
Exterior Height
160 in
Details
Recommended
Telescoping Ladder
4.5

Tank Capacities

Specs Value Buy Shop All Top 5
Number Of Fresh Water Holding Tanks 1 - - -
Number Of Gray Water Holding Tanks 1 - - -
Number Of Black Water Holding Tanks 1 - - -
Fresh Water Tank Capacity 66 gal - Fresh Water Tanks -
Gray Water Tank Capacity 68 gal - - -
Black Water Tank Capacity 44 gal - Back Water Tanks -
Number Of Propane Tanks 2 - - -
Propane Tank Capacity 60 lbs 30Lb Propane Tank Propane Tank Capacity -
Specs
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Number Of Fresh Water Holding Tanks
1
Number Of Gray Water Holding Tanks
1
Number Of Black Water Holding Tanks
1
Fresh Water Tank Capacity
66 gal
Details
Gray Water Tank Capacity
68 gal
Black Water Tank Capacity
44 gal
Details
Number Of Propane Tanks
2
Propane Tank Capacity
60 lbs
Details
Recommended
30Lb Propane Tank

Tires & Wheels

Specs Value Buy Shop All Top 5
Rear Tire Aspect Ratio 85 - - -
Wheels Composition Aluminum - - -
Rear Tire Width 235 - - -
Front Brake Type Not Applicable - - -
Rear Tire 235/85R 16G Full Spec - - -
Rear Tire Speed Rating G - - -
Rear Brake Type Electric Drum - - -
Rear Wheel Diameter 16 - - -
Specs
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Rear Tire Aspect Ratio
85
Wheels Composition
Aluminum
Rear Tire Width
235
Front Brake Type
Not Applicable
Rear Tire
235/85R 16G Full Spec
Rear Tire Speed Rating
G
Rear Brake Type
Electric Drum
Rear Wheel Diameter
16

Heating & Cooling

Specs Value Buy Shop All Top 5
Air Conditioning Type Automatic Dometic 13.5K Air Conditioner Shop All RV AC -
Water Heater Tank Capacity 12 g RV Tank Water Heater RV Water Heaters -
Heater Type Automatic - - -
Water Heater Pump Power Mode Electrical / Propane - - -
Specs
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Air Conditioning Type
Automatic
Details
Recommended
Dometic 13.5K Air Conditioner
4.3
Water Heater Tank Capacity
12 g
Details
Recommended
RV Tank Water Heater
4.4
Heater Type
Automatic
Water Heater Pump Power Mode
Electrical / Propane

Living Room / Bedroom(s)

Specs Value Buy Shop All Top 5
Number Of Sofas 2 Tri-Fold Sofa - -
Number Of Bathrooms 1 - - -
Reclining Sofa No RV Loveseat Recliner Sofa Shop Sofa -
Master Bedroom Door Style Conventional Door - - -
Number Of King Size Beds 1 - - -
Number Of Recliner / Rockers 2 - - -
Full Size Master Bedroom Closet Yes - - -
Master Bedroom Shades / Curtains Yes - - -
Master Bedroom Location Rear - - -
Sofa Material Vinyl - - -
Number Of Convertible / Sofa Beds 2 - - -
Living Area Location Front - - -
Master Bedroom Mirror Doors Yes - - -
Master Bedroom Flooring Type Carpet - - -
Specs
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Number Of Sofas
2
Details
Recommended
Tri-Fold Sofa
4.6
Number Of Bathrooms
1
Reclining Sofa
No
Details
Recommended
RV Loveseat Recliner Sofa
4.3
Master Bedroom Door Style
Conventional Door
Number Of King Size Beds
1
Number Of Recliner / Rockers
2
Full Size Master Bedroom Closet
Yes
Master Bedroom Shades / Curtains
Yes
Master Bedroom Location
Rear
Sofa Material
Vinyl
Number Of Convertible / Sofa Beds
2
Living Area Location
Front
Master Bedroom Mirror Doors
Yes
Master Bedroom Flooring Type
Carpet

Living Room / Bedroom(s) Best Sellers

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Kitchen / Dining

Specs Value Buy Shop All Top 5
Kitchen / Living Area Flooring Type Carpet / Vinyl - - -
Refrigerator Size Full-Size - - -
Kitchen Table Configuration Chairs - - -
Refrigerator Power Mode Electric / Propane - - -
Kitchen Location Center - - -
Number Of Oven Burners 3 - - -
Specs
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Kitchen / Living Area Flooring Type
Carpet / Vinyl
Refrigerator Size
Full-Size
Kitchen Table Configuration
Chairs
Refrigerator Power Mode
Electric / Propane
Kitchen Location
Center
Number Of Oven Burners
3

Bathroom

Specs Value Buy Shop All Top 5
Bathroom Location Center - - -
Bathroom Flooring Type Vinyl - - -
Toilet Type Porcelain RV Toilet with Sprayer Attachment Toilets Top 5
Specs
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Bathroom Location
Center
Bathroom Flooring Type
Vinyl
Toilet Type
Porcelain
Details
Buying Guide Top 5 Toilet Type Products
Recommended
RV Toilet with Sprayer Attachment

Exterior

Specs Value Buy Shop All Top 5
Number of Awnings 1 Motorized RV Awning Set Shop Awnings -
Leveling Jack Type Front Power / Rear Power - - -
Number Of Axles 2 - - -
Sidewall Construction Fiberglass - - -
Number of Doors 1 - - -
Door Type Plastic / Glass - - -
Brand Name Samsung - - -
Body Material Aluminum - - -
Specs
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Number of Awnings
1
Details
Recommended
Motorized RV Awning Set
4.4
Leveling Jack Type
Front Power / Rear Power
Number Of Axles
2
Sidewall Construction
Fiberglass
Number of Doors
1
Door Type
Plastic / Glass
Brand Name
Samsung
Body Material
Aluminum

Exterior Best Sellers

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Options

Specs Value Buy Shop All Top 5
Power Retractable Awning Yes - - -
Surround Sound Yes - - -
Heat Prewiring Yes - - -
Satellite Prewiring Yes - - -
Bunkhouse No - - -
Metallic No - - -
Wallpaper Yes - - -
Interior Wood Finish Yes - - -
Phone Prewiring Yes - - -
Sliding Glass Door No - - -
Satellite No - - -
Battery Power Converter Yes - - -
Water Heater Tank Bypass Yes - - -
Power Retractable Slideout Yes - - -
TV Antenna Prewiring Yes - - -
Heated No - - -
Overhead Fan Yes Overhead Fan - -
Screened Room No - - -
Cable Prewiring Yes - - -
Refrigerator Standard - - -
Air Conditioning Prewiring Yes - - -
Washer / Dryer Prewiring Yes - - -
Specs
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Power Retractable Awning
Yes
Surround Sound
Yes
Heat Prewiring
Yes
Satellite Prewiring
Yes
Bunkhouse
No
Metallic
No
Wallpaper
Yes
Interior Wood Finish
Yes
Phone Prewiring
Yes
Sliding Glass Door
No
Satellite
No
Battery Power Converter
Yes
Water Heater Tank Bypass
Yes
Power Retractable Slideout
Yes
TV Antenna Prewiring
Yes
Heated
No
Overhead Fan
Yes
Details
Recommended
Overhead Fan
4.2
Screened Room
No
Cable Prewiring
Yes
Refrigerator
Standard
Air Conditioning Prewiring
Yes
Washer / Dryer Prewiring
Yes

Entertainment

Specs Value Buy Shop All Top 5
Number Of Discs 1 - - -
Speaker Location Interior / Exterior RecPro Exterior Speakers - -
Number Of Televisions 2 Insignia LED HD Alexa TV Shop RV TV's -
Specs
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Number Of Discs
1
Speaker Location
Interior / Exterior
Details
Recommended
RecPro Exterior Speakers
4.4
Number Of Televisions
2
Details
Recommended
Insignia LED HD Alexa TV
4.3

Entertainment Best Sellers

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Instrumentation

Specs Value Buy Shop All Top 5
Number Of Radios 1 - - -
Specs
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Number Of Radios
1

Interior

Specs Value Buy Shop All Top 5
Material Vinyl - - -
Specs
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Material
Vinyl

Quick Overview

Specs Value Buy Shop All Top 5
Parent Company Keystone RV Inc. - - -
Year 2017 - - -
Make Keystone - - -
Display Name Alpine 3661FL - - -
Class Fifth Wheel - - -
Max Sleeping Count 6 - - -
Number of Slideouts 6 - - -
Introduction Year 2016 - - -
Specs
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More
Parent Company
Keystone RV Inc.
Year
2017
Make
Keystone
Display Name
Alpine 3661FL
Class
Fifth Wheel
Max Sleeping Count
6
Number of Slideouts
6
Introduction Year
2016

How We Scored This RV

Our MintRV Rating analyzes over 50 specifications across 5 key dimensions. Each dimension starts at 5.0 points and adjusts based on how this RV's specs compare to others in its class. Below is exactly how we calculated each score for this fifth wheel.

Tow-Ready Score
5.3/10
Base Score 5.0
Spec-based adjustments Based on Fifth Wheel class averages +0.3
Final Tow-Ready Score 5.3
Living Space & Layout
6.8/10
Base Score 5.0
Spec-based adjustments Based on Fifth Wheel class averages +1.8
Final Living Space & Layout 6.8
Comfort & Features
6.3/10
Base Score 5.0
Spec-based adjustments Based on Fifth Wheel class averages +1.3
Final Comfort & Features 6.3
Storage Space
4.0/10
Base Score 5.0
Spec-based adjustments Based on Fifth Wheel class averages -1.0
Final Storage Space 4.0
Off-Grid & Campsites
6.3/10
Base Score 5.0
Spec-based adjustments Based on Fifth Wheel class averages +1.3
Final Off-Grid & Campsites 6.3
About Our Rating Methodology

MintRV Ratings are calculated using verified manufacturer specifications. We compare each RV against others in its class type and weight category. Scores are updated when new specs become available. Learn more about our methodology →

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Frequently Asked Questions

To safely tow the 2017 Keystone RV Alpine 3661fl, ensure your vehicle's rated tow capacity exceeds its GVWR of 15500 lbs. With a dry weight of 13620 lbs and hitch weight of 2950 lbs, most midsize trucks and SUVs can tow it comfortably with a 10-20% safety margin.

This Fifth Wheel has a dry weight of 13620 lbs and a GVWR of 15500 lbs, giving a payload capacity of 1880 lbs for gear, water, and supplies.

The approximate dimensions are length 469 in., width 96 in., and height 160 in. Always confirm clearances for garages, storage, and campsites.

The Alpine 3661fl includes a fresh water capacity of gallons, black water tank(s), and lbs of propane capacity-ideal for off-grid weekends.

Many Alpine 3661fl owners add a weight-distribution hitch, brake controller, leveling system, and portable generator to improve towing comfort. Solar kits, backup cameras, and upgraded tires are also popular upgrades.

With a GVWR of 15500 lbs and dry weight of 13620 lbs, the Alpine 3661fl is light enough for smaller tow vehicles yet rugged enough for light off-road travel. Add solar, extra propane, and a generator for extended off-grid stays.

This floorplan sleeps up to 6 people comfortably - perfect for couples or small families seeking a lightweight, easy-tow Fifth Wheel.

The Alpine 3661fl features body construction with sidewalls and 2 axle(s). Its GVWR of 15500 lbs ensures strength without excessive towing weight.
?? Tip: Always check your vehicle's specific towing capacity in the owner's manual. Consider payload and tongue weight too!

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