CamperHardlyKnowHer

Newmar Essex 4551

Class Abuilt 2019– (in production)Better build tierPatient search on the used market
WHAT ONE COSTS
$1,113,200MSRP today

Still in production — a used 2023 would run roughly $768,100.

THE SPECS
Length44.8 ft
Height (incl. A/C)13.3 ft
Width8.5 ft
Interior height6.9 ft
GVWR54,000 lb
Dry weight46,500 lb
Cargo capacity7,500 lb
Sleeps5
Slide-outs3
Fresh water105 gal
Grey water80 gal
Black water60 gal
Air conditioning45,000 BTU
Fuel150 gal
Engine / chassisCummins X15 605 hp diesel pusher · Freightliner tag-axle
GeneratorCummins Onan 12.5 kW diesel

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

WHERE PEOPLE SLEEP
  • 1× Rear king bed(Permanent)72×80
  • 1× 87 in. side hide-a-bed sofa(Convertible)—
  • 1× Dinette(Convertible)—
HOW IT'S BUILT — 4/5
WallsLaminated fiberglass
FrameSteel
RoofWalk-on
UnderbellyEnclosed

Newmar (Better tier): Newmar

YEAR BY YEAR — WHAT CHANGED
YEARSGVWRDRYMSRP
201954,000 lb47,300 lb$1,113,150
2023–2454,000 lb47,200 lb$1,113,150
202554,000 lb47,100 lb$1,063,500
2026–54,000 lb46,500 lb$1,113,150
  • 2019Introduced
  • 2022Chassis moved from Spartan K3 to Freightliner
  • 2026MSRP $1,113,150
FINDING ONE

Patient search — weeks of watching, and probably some travel. Why: 8-year production run; still in production; priced at the top of its maker’s range. Estimated from build volume and production span — not a count of live listings.

THE READ

The longest-running plan in the modern Essex — eight straight model years and still built.

OTHER ESSEX FLOORPLANS
4501 · 54,000 lb · sleeps 44503 · 54,000 lb · sleeps 44507 · 54,000 lb · sleeps 44513 · 54,000 lb · sleeps 44518 · 54,000 lb · sleeps 44519 · 54,000 lb · sleeps 44521 · 54,000 lb · sleeps 54531 · 54,000 lb · sleeps 44533 · 54,000 lb · sleeps 44534 · 54,000 lb · sleeps 44536 · 54,000 lb · sleeps 44537 · 54,000 lb · sleeps 44542 · 52,000 lb · sleeps 44543 · 54,000 lb · sleeps 4the whole line →
Is the 4551 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 and watch the whole market re-rank around them. Nothing gets hidden, everything gets explained.

Rank it against your setup →

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