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Heartland Road Warrior 351

Fifth wheelbuilt 2021–23Mixed build tierFindable on the used market
WHAT ONE COSTS
$90,100est. used (2023, 3 yr old)

Sticker was $145,431 in 2023. Out of production since 2023, so the used market is the only way to buy one. Estimate assumes a 2023 unit.

WHAT IT WEIGHS BEHIND YOUR TRUCK
~15,084 lbestimated as towed, for 2 people

dry weight 13,450 lb + fresh water (100 gal, full) 834 lb + propane + battery 200 lb + gear for 2 600 lb. Brochure dry weight omits water, propane, batteries and your gear; this estimate doesn't.

You want a tow rating around16,760 lb (10% margin)
GVWR (the sticker maximum)16,592 lb
Tongue weight, loaded~2,907 lb (19%)
Cargo capacity3,094 lb
WHICH TOW VEHICLES IT FITS: 18 OF 95

Judged the way the app judges: estimated loaded weight against each vehicle's rating less a 10% margin, per model year, because the 351's published weights held steady. Fifth wheels also need a pickup bed and are held to the fifth-wheel rating where published.

VEHICLETOW RATINGVERDICT
Chevrolet Silverado / GMC Sierra 2500HD (Duramax, max tow) '24-2622,500 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '20-2318,510 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 2500HD (Duramax) '11-1918,100 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '20-2636,000 lbfits, loaded, with 10% margin
Chevrolet Silverado / GMC Sierra 3500HD (Duramax DRW, gooseneck) '11-1923,300 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, gooseneck) '20-2222,800 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 diesel, tow pkg) '17-1918,000 lbfits, loaded, with 10% margin
Ford F-250 Super Duty (6.7 HO diesel, gooseneck) '23-2623,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '17-1932,500 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '20-2237,000 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 diesel DRW, gooseneck) '11-1621,600 lbfits, loaded, with 10% margin
Ford F-350 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2638,000 lbfits, loaded, with 10% margin
Ford F-450 Super Duty (6.7 HO diesel DRW, gooseneck) '23-2640,000 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins HO) '19-2620,000 lbfits, loaded, with 10% margin
Ram 2500 (6.7 Cummins) '11-1817,980 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins DRW, gooseneck) '13-1831,210 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '25-2636,610 lbfits, loaded, with 10% margin
Ram 3500 (6.7 Cummins HO DRW, gooseneck) '19-2437,090 lbfits, loaded, with 10% margin
The 77it doesn't fit

These verdicts assume 2 people aboard with typical gear. See the margin for your truck and your crew →

THE SPECS
Length40.8 ft
Height (incl. A/C)13.3 ft
Width8.4 ft
GVWR16,592 lb
Dry weight13,450 lb
Dry tongue weight2,592 lb
Cargo capacity3,094 lb
Sleeps8
Slide-outs3
Axles2
Fresh water100 gal
Grey water86 gal
Black water92 gal
Air conditioning27,000 BTU
Awning18 ft

A missing row means the maker never published that figure: unknown, not zero.

WHERE PEOPLE SLEEP
  • 1× front master king bed(Permanent)—
  • 1× rear electric drop-down queen bed in garage(Stow-away)—
  • 1× convertible sofa / bench seat in garage(Convertible)—
HOW IT'S BUILT: 5/5
WallsAzdel composite
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

Heartland (Mixed tier): Heartland (Thor): heavily equipped laminated toy hauler with MORryde CRE3000 suspension, 7,000 lb Dexter axles and a walk-on roof, but Heartland's fit-and-finish and warranty service are inconsistent enough to keep it out of the top tier.

YEAR BY YEAR: WHAT CHANGED
  • 2021Introduced as the entry point of the redesigned Road Warrior
  • 2023Final model year; line discontinued
FINDING ONE

Findable: a few listed nationwide most weeks. Why: Heartland is a volume manufacturer. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

The short, tandem-axle Road Warrior with an 11-ft garage - the only one in the final line-up a well-specced one-ton can carry without drama.

OTHER ROAD WARRIOR FLOORPLANS
30C · 14,000 lb · sleeps 7310 · 15,500 lb · sleeps 7348 · 15,500 lb · sleeps 7355 · 18,000 lb · sleeps 7362 · 17,000 lb · sleeps 7375 · 16,856 lb · sleeps 8387 · 17,000 lb · sleeps 6390 · 20,000 lb · sleeps 7391 · 21,000 lb · sleeps 8392 · 17,000 lb · sleeps 6396 · 20,000 lb · sleeps 63965 · 21,000 lb · sleeps 6397 · 21,000 lb · sleeps 8410 · 20,000 lb · sleeps 7the whole line →
Find one for sale

Live listings for the 351 on the big marketplaces. Each search opens pre-filled with this exact floorplan:

RV Trader ↗Camping World ↗FB Marketplace ↗Google ↗

Inventory varies by site and day. Slim pickings? search the whole Road Warrior line ↗

Is the 351 your #1, or just a spec sheet?

These are the facts. Whether it beats the other six thousand rigs for you depends on what you care about. Set your priorities as sliders, switch on your hard limits, and watch the whole market re-rank around them. Every exclusion explained, every margin shown.

See where it ranks for you →

Data compiled from manufacturer spec sheets, retrieved 2026-07.