Tiffin Zephyr 45 MZ

Name: Tiffin Zephyr 45 MZ
Brand: Tiffin

Class Abuilt 2019–19Better build tierScarce on the used market

WHAT ONE COSTS

$361,900est. used (2019, 7 yr old; from 5 priced floorplans of this line)

THE SPECS

Length44.9 ft

Height (incl. A/C)12.9 ft

Width8.4 ft

Interior height7.0 ft

GVWR51,000 lb

Dry weightnot published

Sleeps4

Fresh water90 gal

Grey water70 gal

Black water50 gal

Engine / chassisCummins ISX 605 HP / Allison 4000 MH on Tiffin PowerGlide tag-axle chassis

Generator12.5 kW Onan Quiet Diesel

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

WHERE PEOPLE SLEEP

1× Rear king(Permanent)72×80
1× Sofa sleeper(Convertible)—
1× Booth dinette(Convertible)—

HOW IT'S BUILT: 4/5

WallsLaminated fiberglass

FrameSteel

RoofWalk-on

UnderbellyEnclosed

Tiffin (Better tier): Tiffin's 45-foot flagship tag-axle diesel pusher, above the Allegro Bus in the Red Bay line.

YEAR BY YEAR: WHAT CHANGED

2019Introduced and dropped in the same model year; GVWR 51,000, GCWR 71,000

FINDING ONE

Scarce: months of watching; be ready to fly and drive it home. Why: only one model year. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

One-year plan offered with the 45 PZ when the Zephyr moved back onto Tiffin's PowerGlide chassis.

OTHER ZEPHYR FLOORPLANS

45 DZ · 48,600 lb · sleeps 4 45 FZ · 54,000 lb · sleeps 5 45 LZ · 48,600 lb · sleeps 4 45 OZ · 50,000 lb · sleeps 4 45 PZ · 54,000 lb · sleeps 5 45 QBZ · 46,600 lb · sleeps 4 45 TZ · 48,600 lb · sleeps 4 the whole line →

Find one for sale

Live listings for the 45 MZ 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 Zephyr line ↗

Is the 45 MZ 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 dealer and aggregator listings, retrieved 2026-07.