Fifth Wheel
Heartland Landmark 365 Lm-newport
Compare specs across all model years (2015–2023)
9
Model Years
4
Sleeps
43' 7"
Length
17,944
Avg GVWR
Our Recommendation
Which Year Should You Buy?
2023 Landmark 365 Lm-newport
Best Choice
Highest Mint Score (32.7). Most recent model year with latest updates.
What Changed Year-Over-Year
2021
2022
Capacity Change
Sleeping capacity changed from 4 to 2.
2020
2021
Length Increased
Length changed from 42' 6" to 43' 6".
2016
2017
Tank Capacity Change
Fresh water capacity changed from 90 to 80 gallons.
All Model Years
Best Value
2023
2023 Heartland Landmark 365 Lm-newport
32.7
18,000 lbs GVWR
3,048 lbs Hitch
43' 7"
Sleeps 2
View Full Specs
Check Towing
2022
2022 Heartland Landmark 365 Lm-newport
32.4
18,000 lbs GVWR
3,048 lbs Hitch
43' 7"
Sleeps 2
↓ Sleeps 2 fewer than 2021
View Full Specs
Check Towing
2021
2021 Heartland Landmark 365 Lm-newport
31.4
18,000 lbs GVWR
3,048 lbs Hitch
43' 6"
Sleeps 4
View Full Specs
Check Towing
2020
2020 Heartland Landmark 365 Lm-newport
31.7
18,000 lbs GVWR
3,048 lbs Hitch
42' 6"
Sleeps 4
View Full Specs
Check Towing
2019
2019 Heartland Landmark 365 Lm-newport
30.4
18,000 lbs GVWR
3,210 lbs Hitch
42' 6"
Sleeps 4
View Full Specs
Check Towing
2018
2018 Heartland Landmark 365 Lm-newport
30.6
18,000 lbs GVWR
3,210 lbs Hitch
42' 8"
Sleeps 4
View Full Specs
Check Towing
2017
2017 Heartland Landmark 365 Lm-newport
30.6
18,000 lbs GVWR
3,210 lbs Hitch
42' 8"
Sleeps 4
View Full Specs
Check Towing
2016
2016 Heartland Landmark 365 Lm-newport
30.2
18,000 lbs GVWR
3,210 lbs Hitch
42' 9"
Sleeps 4
↑ 500 lbs heavier than 2015
View Full Specs
Check Towing
2015
2015 Heartland Landmark 365 Lm-newport
29.4
17,500 lbs GVWR
3,310 lbs Hitch
42' 9"
Sleeps 4
Original model year
View Full Specs
Check Towing
Can Your Vehicle Tow the Landmark 365 Lm-newport?
Enter your truck specs to see if any of these model years fit your towing capacity—and which year gives you the most safety margin.
Tip: Click a year to see the full specs, tow guidance, and recommended gear for that model year.
Leave the Noise Behind.
Reconnect Outdoors.
Our mission is to help people make well-informed RV buying decisions, so they can leave the noise and screens behind, reconnect with family, and create unforgettable memories in the great outdoors.
Free tools. No sales pressure. Just better decisions.