Tiffin · Class A · Model-year overview
2026 Tiffin Zephyr
Two 45-foot tag-axle floorplans on the PowerGlide SL chassis with a 605-horsepower Cummins X15 engine.
Key facts re-checked. Owners, dates and prices were re-checked against their sources. A full second review is still to come.
- Price when new
- Not documented
- Length
- 45 ft
- Chassis
- PowerGlide SL raised-rail rear-engine diesel
- Engine
- Cummins X15 · 605 hp
These values describe this model year and configuration. An individual coach can differ, so check it against the coach’s own records. “Not documented” means the encyclopedia does not have that fact yet.
Full specifications
- Model year
- 2026
- Variant
- Model-year overview
- Chassis maker
- Not documented
- Chassis
- PowerGlide SL raised-rail rear-engine diesel
- Engine maker
- Cummins
- Engine
- X15
- Displacement (L)
- Not documented
- Horsepower
- 605
- Torque (lb-ft)
- 1950
- Transmission
- Allison 4000 MH 6-speed automatic
- Length (ft)
- 45
- Height (ft)
- 13.33
- Width (in)
- 101
- Slides
- 3
- Floorplan
- Not documented
- Generator maker
- Onan
- Generator
- Quiet Diesel
- Generator (kW)
- 12.5
- Fuel (gal)
- 150
- Fresh water (gal)
- 100
- Gray water (gal)
- 100
- Black water (gal)
- 55
- Luxury systems
- Aqua-Hot 600D hydronic heating; three 15,000-BTU roof air conditioners with heat pumps; two inverter-chargers; air leveling with hydraulic jacks; steerable tag axle; adaptive cruise control and collision mitigation.
- Intended use
- Not documented
Floorplans offered in 2026
45 FZ45 PZ
What changed this year
The sheet marks Mobileye lane-departure warning with automatic high beams as new. The tag axle is rated 14,000 lb, against 13,000 lb on the 2025 sheet.
Notes
The sheet lists three slide-outs for each floorplan; Tiffin's 2027 model page describes the 45 PZ as a quad-slide, so treat the 45 PZ count with care. Wheelbase 316 in, GVWR 54,000 lb, GCWR 74,000 lb, hitch rating 20,000 lb, DEF tank 15 gallons. The sheet names the chassis only as PowerGlide SL, without a maker. The sheet does not print a model year; the year comes from its file name (MY26, revision dated 12.1.25) and Tiffin's library label. The product brochure linked here was not opened.
Brochures and sources
- Original brochure or specification sheet ↗
- Zephyr Specifications, Features, and Options (2026 model-year sheet) ↗
Links open the original page. Facts are checked against these sources; tell us if you find one that is out of date.
2026 Zephyr coaches for sale
See matching listings in the Motorcoach.direct marketplace.