Monday, March 23, 2026

2007 Tiffin Allegro Bay 37QDB Diesel Pusher – Freightliner – Many Interior and Mechanical Updates $39,500



Well-maintained 2007 Tiffin Allegro Bay 37QDB diesel pusher on the dependable Freightliner chassis with Cummins power. This coach has had extensive mechanical updates and interior upgrades, making it a reliable and comfortable motorhome ready for travel.

Many diesel engine components have already been replaced so the next owner can travel with confidence.

Located in Mesa, Arizona.

Price: $39,500

Clean title in hand.


Coach Highlights

  • Quad slide floorplan (37QDB)

  • Freightliner diesel chassis

  • Cummins diesel engine

  • Residential refrigerator

  • Convection microwave

  • 135-watt solar system

  • New Magnum inverter/charger

  • LED lighting throughout

  • New upgraded furniture

  • New flooring

  • Updated faucets

  • New front air conditioner


Major Mechanical Updates

Many of the expensive diesel components have already been replaced:

  • Fuel injectors replaced

  • ECM replaced

  • Lift pump replaced

  • Turbo replaced

  • Exhaust manifold replaced

  • All factory recalls completed

  • Tiffin structural updates completed including new side rails and wet bay reinforcement

Extensive maintenance records available.


Interior Improvements

  • New flooring throughout

  • Carpet replaced where applicable

  • LED lighting conversion

  • Residential refrigerator upgrade

  • Upgraded furniture and fixtures

The coach presents very well and has been thoughtfully updated.


Why This Coach Stands Out

Many buyers worry about expensive diesel repairs when purchasing an older coach. This Allegro Bay has already had many of the major mechanical components replaced, which significantly reduces that risk.

The Tiffin Motorhomes brand is known for solid construction and long-term durability, and this pre-DEF Allegro Bay model is highly regarded for their quality and spacious quad-slide layouts.


Contact

Message heyduke50@inorbit.com for additional details, mileage, or to schedule a viewing.

Serious buyers welcome.

Located in Mesa AZ.

Below are videos of our RV for you to see!

Outside view video

Inside view video



Sunday, January 25, 2026

A new chapter, maybe... RV for sale!

A lot has been going on since we last posted. We have had many discussions on whether or not this will be the final winter stay of our full-timing adventure. We have given it a lot of thought and have decided to put our beloved RV up for sale. This decision didn't come easy. 

As such, we are looking at a possibly purchasing a park model in the Mesa, Arizona area. However

, we've been having a hard time finding one that we find acceptable. While there are many available for sale, there are only a few that meet all of our needs. 

We shall keep looking but all is not lost if we don't find one. If the RV doesn't sell, we will just continue traveling for another year. If it does sell, it will force our hand to figure out what we want to do next. In the meantime, if you know of anybody looking for a well-loved RV, ours is up for sale. I'll detail it below : 

2007 Tiffin Allegro Bay 37QDB. This unique RV with four slide outs is a front engine diesel with a 300 Cummins ISB 5.9L engine and 5-speed Allison automatic transmission. We currently have about 96,500 mi on it and we have put most of those miles on it during our travels across the USA, Canada and Mexico. 

While traveling over the last 15 years we have made many modifications and upgrades to the RV. We are non-smokers and don't own any pets. The RV is meticulously clean and some of the upgrades that we've done include replacing most of the carpet with luxury vinyl tile, replacing the inverter/ charger, replacing the microwave convection oven, installing a residential refrigerator, installing 135 watts of solar on the roof, bought all new furniture a year ago, converted most of the lights to LED, replaced all the original blinds, added wire shelving to the master bedroom closet and replaced all the TVs with flat screens and a new sound system.

Mechanically we have replaced the turbo, the ECM, the exhaust manifold, the lift pump and all new fuel injectors. Likewise, we have replaced the troublesome Atwood levelers with the EQ systems automatic leveling system.

This model's recalls have been performed including replacing the side rails on the roof and wet bay. The back tires are 4 years old and need to be replaced in about 2 years while the fronts are due for replacement this year and can either be done by us or we can offer a discount on the total price to the buyer and they can replace them at the end of the year. 

The chassis batteries were replaced last year and the the house batteries are 2 years old. 

If you're looking to travel full-time or even part-time, you won't find a better loved RV than this one. We have worked out all the bugs over the years and it is ready to go for its new owners. 

We are asking $49,500 and included for towing is the Roadmaster tow bar. We towed a 2011 Honda CRV and if desired we would include the Roadmaster hitch to the car as well. Also included are lots of spare parts that one may need while traveling that we kept in case of troubles on the road. 

Here's the link to our Facebook post in Facebook! Marketplace that if you click on we'll give you more details and a mechanism to contact us if you are interested or have a friend that is.

https://www.facebook.com/marketplace/item/1503348424106908