Newmar King Aire 4553

Name: Newmar King Aire 4553
Brand: Newmar

Class Abuilt 2015–21Better build tierPatient search on the used market

WHAT ONE COSTS

$814,400est. used (2021, 5 yr old)

Sticker was $1,327,295 in 2021. Out of production since 2021, so the used market is the only way to buy one. Estimate assumes a 2021 unit.

THE SPECS

Length44.9 ft

Height (incl. A/C)13.3 ft

Width8.5 ft

Interior height6.9 ft

GVWR54,000 lb

Dry weight49,200 lb

Cargo capacity4,800 lb

Sleeps4

Slide-outs3

Fresh water105 gal

Grey water80 gal

Black water60 gal

Air conditioning45,000 BTU

Fuel200 gal

Engine / chassisCummins X15 605 hp diesel pusher · Spartan K3

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× Hide-a-bed sofa(Convertible)—

HOW IT'S BUILT: 4/5

WallsLaminated fiberglass

FrameSteel

RoofWalk-on

UnderbellyEnclosed

Newmar (Better tier): Newmar

YEAR BY YEAR: WHAT CHANGED

YEARS	GVWR	DRY	MSRP
2015	54,000 lb	46,400 lb	$1,327,295
2016	54,000 lb	47,000 lb	$1,327,295
2017	54,000 lb	47,650 lb	$1,327,295
2018	54,000 lb	48,900 lb	$1,327,295
2019–20	54,000 lb	49,000 lb	$1,327,295
2021	54,000 lb	49,200 lb	$1,327,295

2015Introduced with the ISX15 600 hp and a 140 gal fresh tank
2018Engine to X15 605 hp, fresh tank to 105 gal, interior height 83 in.
2022Discontinued

FINDING ONE

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

OUR TAKE

Seven model years — the longest run of any King Aire plan.

OTHER KING AIRE FLOORPLANS

4501 · 54,000 lb · sleeps 4 4503 · 54,000 lb · sleeps 4 4507 · 54,000 lb · sleeps 4 4513 · 54,000 lb · sleeps 4 4518 · 54,000 lb · sleeps 4 4519 · 54,000 lb · sleeps 4 4521 · 54,000 lb · sleeps 5 4531 · 54,000 lb · sleeps 5 4533 · 54,000 lb · sleeps 4 4534 · 54,000 lb · sleeps 4 4536 · 54,000 lb · sleeps 4 4537 · 54,000 lb · sleeps 4 4540 · 54,000 lb · sleeps 7 4546 · 54,000 lb · sleeps 4 the whole line →

Find one for sale

Live listings for the 4553 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 King Aire line ↗

Is the 4553 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.