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Heartland Fuel 323

Travel trailerbuilt 2021–23Mixed build tierFindable on the used market
WHAT ONE COSTS
$61,100est. used (2023, 3 yr old)

Sticker was $98,662 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
~13,466 lbestimated as towed, for 2 people

dry weight 11,832 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 around14,965 lb (10% margin)
GVWR (the sticker maximum)16,354 lb
Tongue weight, loaded~2,679 lb (20%: high, eats payload)
Cargo capacity4,474 lb
WHICH TOW VEHICLES IT FITS: 19 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 323's published weights changed mid-run.

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 diesel) '11-1616,600 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 76it doesn't fit

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

THE SPECS
Length37.8 ft
Height (incl. A/C)13.3 ft
Width8.4 ft
GVWR16,354 lb
Dry weight11,832 lb
Dry tongue weight2,354 lb
Cargo capacity4,474 lb
Sleeps8
Slide-outs2
Axles2
Fresh water100 gal
Grey water86 gal
Black water45 gal
Air conditioning27,000 BTU

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

WHERE PEOPLE SLEEP
  • 1× front king bed(Permanent)—
  • 1× power drop-down queen bed in the garage(Stow-away)—
  • 1× opposing sofa / dinette in the garage(Convertible)—
HOW IT'S BUILT: 5/5
WallsAzdel composite
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

Heartland (Mixed tier): Heartland (Thor) value toy hauler - Azdel composite sidewalls, aluminium framing and a real welded-tie-down garage at a low price, but Heartland's fit-and-finish and dealer service are inconsistent.

YEAR BY YEAR: WHAT CHANGED
YEARSGVWRDRYMSRP
202116,250 lb12,338 lb$98,662
2022–2316,354 lb11,832 lb$98,662
  • 2021Introduced as the successor to the 322
  • 2022Dry weight cut to 11,832 lb; pin down to 2,354 lb
  • 2023Final model year
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 tandem-axle Fuel fifth wheel - 2,354 lb pin is genuinely one-ton-friendly, unusual for a 38-ft hauler.

OTHER FUEL FLOORPLANS
322 · 16,500 lb · sleeps 6335 · 17,000 lb · sleeps 6352 · 17,000 lb · sleeps 6357 · 16,460 lb · sleeps 8362 · 17,000 lb · sleeps 8364 · 16,473 lb · sleeps 8395 · 21,000 lb · sleeps 8F-250 · 11,157 lb · sleeps 6F-255 · 12,800 lb · sleeps 6F-260 · 12,800 lb · sleeps 6F-265 · 12,800 lb · sleeps 6F-287 · 12,800 lb · sleeps 6F-305 · 12,800 lb · sleeps 6the whole line →
Find one for sale

Live listings for the 323 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 Fuel line ↗

Is the 323 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.