Tiffin Zephyr 45 QBZ

Name: Tiffin Zephyr 45 QBZ
Brand: Tiffin

Class Abuilt 2011–12Better build tierScarce on the used market

WHAT ONE COSTS

$224,700est. used (2012, 14 yr old)

Sticker was $494,599 in 2011. Out of production since 2012, so the used market is the only way to buy one. Estimate assumes a 2012 unit.

THE SPECS

Length44.8 ft

Height (incl. A/C)12.8 ft

Width8.4 ft

Interior height7.0 ft

GVWR46,600 lb

Dry weightnot published

Sleeps4

Fresh water90 gal

Grey water70 gal

Black water50 gal

Fuel150 gal

Engine / chassisCummins ISM 10.8L 500 HP / Allison 4000 MH on Spartan K2 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× 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

2011Verified spec year: Spartan K2, GVWR 46,600, GCWR 61,600
2012Last year before the 45 LZ / 45 TZ pair

FINDING ONE

Scarce: months of watching; be ready to fly and drive it home. Why: only 2 model years; 14 years out of production. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

The Spartan-chassis Zephyr of the early 2010s - big, heavy, 24.4 gal of propane and an LPG cooktop.

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 MZ · 51,000 lb · sleeps 4 45 OZ · 50,000 lb · sleeps 4 45 PZ · 54,000 lb · sleeps 5 45 TZ · 48,600 lb · sleeps 4 the whole line →

Find one for sale

Live listings for the 45 QBZ 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 QBZ 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.