2018 Heartland Oakmont Om-400-fl Specs
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Safe Towing Capacity
80%
Under capacity
Safe zone
Max rating
Essential Upgrades for the 2018 Heartland Oakmont Om-400-fl
Towing & Dimensions
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| GVWR | 15500 lbs | - | - | - |
| Dry Weight | 13207 lbs | - | - | - |
| Hitch Weight | 2905 lbs | - | - | - |
| Length | 515 in | Furrion Backup Camera | Shop Cameras | - |
| Width | 96 in | Clip On Mirrors | Shop Mirrors | - |
| Exterior Height | 155 in | Telescoping Ladder | Shop Ladders | - |
Specs
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GVWR
15500 lbs
Dry Weight
13207 lbs
Hitch Weight
2905 lbs
Length
515 in
Width
96 in
Exterior Height
155 in
Towing & Dimensions Best Sellers
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Electrical & Solar
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Battery Converter Amps | 65 | - | - | - |
| Shore Power | 30 Amps | - | - | - |
| Battery Type | 12V Lead-Acid | Renogy 100Ah LiFePO4 | RV Batteries | Top 5 |
| Solar Pre-Wired | Optional | - | - | - |
| Inverter | Optional | - | - | - |
Specs
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Battery Converter Amps
65
Shore Power
30 Amps
Battery Type
12V Lead-Acid
Solar Pre-Wired
Optional
Inverter
Optional
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Tank Capacities
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Number Of Fresh Water Holding Tanks | 1 | - | - | - |
| Number Of Gray Water Holding Tanks | 2 | - | - | - |
| Number Of Black Water Holding Tanks | 1 | - | - | - |
| Fresh Water Tank Capacity | 59 gal | - | Fresh Water Tanks | - |
| Gray Water Tank Capacity | 80 gal | - | - | - |
| Black Water Tank Capacity | 40 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
2
Number Of Black Water Holding Tanks
1
Fresh Water Tank Capacity
59 gal
Gray Water Tank Capacity
80 gal
Black Water Tank Capacity
40 gal
Number Of Propane Tanks
2
Propane Tank Capacity
60 lbs
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Tires & Wheels
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Tire Brand | Goodyear® | - | - | - |
| Rear Brake Type | Electric Drum | - | - | - |
| Rear Tire Speed Rating | E | - | - | - |
| Spare Tire Location | Exterior Mounted | - | - | - |
| Front Brake Type | Not Applicable | - | - | - |
| Rear Wheel Diameter | 16 | - | - | - |
| Rear Tire Aspect Ratio | 80 | - | - | - |
| Wheels Composition | Aluminum | - | - | - |
| Rear Tire | ST235/80R16E Full Spec | - | - | - |
| Rear Tire Width | 235 | - | - | - |
Specs
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Tire Brand
Goodyear®
Rear Brake Type
Electric Drum
Rear Tire Speed Rating
E
Spare Tire Location
Exterior Mounted
Front Brake Type
Not Applicable
Rear Wheel Diameter
16
Rear Tire Aspect Ratio
80
Wheels Composition
Aluminum
Rear Tire
ST235/80R16E Full Spec
Rear Tire Width
235
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 | 10 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
Water Heater Tank Capacity
10 g
Heater Type
Automatic
Water Heater Pump Power Mode
Electrical / Propane
Heating & Cooling Best Sellers
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Living Room / Bedroom(s)
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Master Bedroom Shades / Curtains | Yes | - | - | - |
| Living Area Location | Front | - | - | - |
| Number Of Bathrooms | 1 | - | - | - |
| Master Bedroom Door Style | Conventional Door | - | - | - |
| Number Of Sofas | 2 | Tri-Fold Sofa | - | - |
| Master Bedroom Mirror Doors | Yes | - | - | - |
| Number Of King Size Beds | 1 | - | - | - |
| Master Bedroom Location | Rear | - | - | - |
| Number Of Recliner / Rockers | 2 | - | - | - |
| Number Of Convertible / Sofa Beds | 2 | - | - | - |
| Full Size Master Bedroom Closet | Yes | - | - | - |
| Master Bedroom Flooring Type | Carpet | - | - | - |
| Sofa Material | Vinyl | - | - | - |
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Master Bedroom Shades / Curtains
Yes
Living Area Location
Front
Number Of Bathrooms
1
Master Bedroom Door Style
Conventional Door
Number Of Sofas
2
Master Bedroom Mirror Doors
Yes
Number Of King Size Beds
1
Master Bedroom Location
Rear
Number Of Recliner / Rockers
2
Number Of Convertible / Sofa Beds
2
Full Size Master Bedroom Closet
Yes
Master Bedroom Flooring Type
Carpet
Sofa Material
Vinyl
Living Room / Bedroom(s) Best Sellers
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Kitchen / Dining
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Oven Depth | 22 / 558.8 in | - | - | - |
| Kitchen Location | Center | - | - | - |
| Refrigerator Size | Full-Size | - | - | - |
| Number Of Oven Burners | 3 | - | - | - |
| Kitchen / Living Area Flooring Type | Carpet / Vinyl | - | - | - |
| Refrigerator Power Mode | Electric / Propane | - | - | - |
| Kitchen Table Configuration | Chairs | - | - | - |
Specs
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Oven Depth
22 / 558.8 in
Kitchen Location
Center
Refrigerator Size
Full-Size
Number Of Oven Burners
3
Kitchen / Living Area Flooring Type
Carpet / Vinyl
Refrigerator Power Mode
Electric / Propane
Kitchen Table Configuration
Chairs
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
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 Emergency Exits | 1 | - | - | - |
| Number of Doors | 2 | - | - | - |
| Door Type | Plastic / Glass | - | - | - |
| Body Material | Aluminum | - | - | - |
Specs
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Number of Awnings
1
Leveling Jack Type
Front Power / Rear Power
Number Of Axles
2
Sidewall Construction
Fiberglass
Number Of Emergency Exits
1
Number of Doors
2
Door Type
Plastic / Glass
Body Material
Aluminum
Exterior Best Sellers
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Options
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Screened Room | No | - | - | - |
| Battery Power Converter | Yes | - | - | - |
| Washer / Dryer Prewiring | Yes | - | - | - |
| Heated | No | - | - | - |
| Power Retractable Slideout | Yes | - | - | - |
| Cable Prewiring | Yes | - | - | - |
| Overhead Fan | Yes | Overhead Fan | - | - |
| Surround Sound | Yes | - | - | - |
| Satellite Prewiring | Yes | - | - | - |
| Air Conditioning Prewiring | Yes | - | - | - |
| Heat Prewiring | Yes | - | - | - |
| Power Retractable Awning | Yes | - | - | - |
| Wallpaper | Yes | - | - | - |
| Metallic | No | - | - | - |
| Sliding Glass Door | No | - | - | - |
| Bunkhouse | No | - | - | - |
| Water Heater Tank Bypass | Yes | - | - | - |
| Interior Wood Finish | Yes | - | - | - |
| Refrigerator | Standard | - | - | - |
| Phone Prewiring | No | - | - | - |
| TV Antenna Prewiring | Yes | - | - | - |
Specs
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Screened Room
No
Battery Power Converter
Yes
Washer / Dryer Prewiring
Yes
Heated
No
Power Retractable Slideout
Yes
Cable Prewiring
Yes
Overhead Fan
Yes
Surround Sound
Yes
Satellite Prewiring
Yes
Air Conditioning Prewiring
Yes
Heat Prewiring
Yes
Power Retractable Awning
Yes
Wallpaper
Yes
Metallic
No
Sliding Glass Door
No
Bunkhouse
No
Water Heater Tank Bypass
Yes
Interior Wood Finish
Yes
Refrigerator
Standard
Phone Prewiring
No
TV Antenna Prewiring
Yes
Entertainment
| Specs | Value | Buy | Shop All | Top 5 |
|---|---|---|---|---|
| Number Of Televisions | 1 | Insignia LED HD Alexa TV | Shop RV TV's | - |
| Number Of Discs | 1 | - | - | - |
| Speaker Location | Interior | RecPro Exterior Speakers | - | - |
Specs
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Number Of Televisions
1
Number Of Discs
1
Speaker Location
Interior
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 | Heartland Recreational Vehicles LLC | - | - | - |
| Year | 2018 | - | - | - |
| Make | Heartland | - | - | - |
| Display Name | Oakmont OM 400 FL | - | - | - |
| Class | Fifth Wheel | - | - | - |
| Max Sleeping Count | 6 | - | - | - |
| Number of Slideouts | 5 | - | - | - |
| Introduction Year | 2016 | - | - | - |
Specs
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Parent Company
Heartland Recreational Vehicles LLC
Year
2018
Make
Heartland
Display Name
Oakmont OM 400 FL
Class
Fifth Wheel
Max Sleeping Count
6
Number of Slideouts
5
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
4.5/10
Base Score
5.0
Spec-based adjustments
Based on Fifth Wheel class averages
-0.5
Final Tow-Ready Score
4.5
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
5.0/10
Base Score
5.0
Spec-based adjustments
Based on Fifth Wheel class averages
+0.0
Final Storage Space
5.0
Off-Grid & Campsites
5.8/10
Base Score
5.0
Spec-based adjustments
Based on Fifth Wheel class averages
+0.8
Final Off-Grid & Campsites
5.8
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 2018 Heartland Oakmont Om-400-fl, ensure your vehicle's rated tow capacity exceeds its GVWR of 15500 lbs. With a dry weight of 13207 lbs and hitch weight of 2905 lbs, most midsize trucks and SUVs can tow it comfortably with a 10-20% safety margin.
This Fifth Wheel has a dry weight of 13207 lbs and a GVWR of 15500 lbs, giving a payload capacity of lbs for gear, water, and supplies.
The approximate dimensions are length 515 in., width 96 in., and height 155 in. Always confirm clearances for garages, storage, and campsites.
The Oakmont Om-400-fl includes a fresh water capacity of gallons, black water tank(s), and lbs of propane capacity-ideal for off-grid weekends.
Many Oakmont Om-400-fl 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 13207 lbs, the Oakmont Om-400-fl 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 Oakmont Om-400-fl 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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