CamperHardlyKnowHer

Monaco Diplomat 41SKQ

Class Abuilt 2009–09Mixed build tierRare on the used market
WHAT ONE COSTS
$111,100est. used (2009, 17 yr old)

Sticker was $279,347 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
Length42.6 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
  • Master queen bed with solid-surface nightstands(Permanent)60×80
  • 90" sofa bed(Convertible)
  • 68" 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
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.

THE READ

Front-kitchen quad slide with a 37 in living-area LCD and a Silent Plus electronic toilet; longest Diplomat of the Monaco Coach era.

OTHER DIPLOMAT FLOORPLANS
Is the 41SKQ 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 and watch the whole market re-rank around them. Nothing gets hidden, everything gets explained.

Rank it against your setup →

Data compiled from dealer and aggregator listings, retrieved 2026-07.