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Monaco Diplomat 41PDQ

Class Abuilt 2009–09Mixed build tierRare on the used market
WHAT ONE COSTS
$110,300est. used (2009, 17 yr old)

Sticker was $277,501 in 2009. Out of production since 2009, so the used market is the only way to buy one. Estimate assumes a 2009 unit.

THE SPECS
Length41.6 ft
Height (incl. A/C)12.6 ft
Width8.4 ft
Interior height7.0 ft
GVWR36,000 lb
Dry weightnot published
Sleeps8
Slide-outs4
Fresh water100 gal
Grey water62 gal
Black water40 gal
Fuel100 gal
Engine / chassisCummins ISL 400 hp 8.9L / Roadmaster RR8R, Allison 3000 MH 6-speed
GeneratorOnan 8.0 kW Quiet Diesel

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

WHERE PEOPLE SLEEP
  • 1× Master queen bed (optional 72x80 king on this plan only)(Permanent)60×80
  • 1× 80" roadside sofa bed(Convertible)—
  • 1× 80" curbside sofa bed(Convertible)—
HOW IT'S BUILT: 4/5
WallsLaminated fiberglass
FrameAluminum
RoofWalk-on
UnderbellyEnclosed

Monaco (Mixed tier): Monaco Coach Corp (2005-2009), Navistar RV (2010-2013), REV Recreation Group (2014-2017)

YEAR BY YEAR: WHAT CHANGED
  • 2009Introduced
  • 2009Last model year — Monaco Coach Corporation filed for bankruptcy in March 2009
FINDING ONE

Rare: a handful change hands a year, mostly between owners. Why: only one model year; 17 years out of production. Estimated from build volume and production span, not a count of live listings.

OUR TAKE

The only 2009 Diplomat that could be ordered with a king bed; twin 80-inch sofas.

OTHER DIPLOMAT FLOORPLANS
36SKT · 33,000 lb · sleeps 438PDD · 33,000 lb · sleeps 438PDQ · 33,000 lb · sleeps 640DST · 33,000 lb · sleeps 440PAQ · 33,000 lb · sleeps 440PDQ · 36,000 lb · sleeps 840PRQ · 33,000 lb · sleeps 641SKQ · 36,000 lb · sleeps 843D · 44,600 lb · sleeps 643DF · 44,600 lb · sleeps 843DFT · 43,000 lb · sleeps 843G · 44,600 lb · sleeps 643P · 44,600 lb · sleeps 643PDQ · 43,000 lb · sleeps 8the whole line →
Find one for sale

Live listings for the 41PDQ 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 Diplomat line ↗

Is the 41PDQ 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.