01 What makes it unique
KZ lists the 2027 Durango Gold G366FBQ at 14,100 lb unloaded (UVW), with a GVWR of 17,500 lb, a cargo carrying capacity of 3,400 lb and a dry pin weight of 2,800 lb. Its UVW plus its cargo capacity comes to exactly its GVWR.
It is 40' 5" long and 13' 6" high with the air conditioner, with 76 gal fresh, 90 gal grey and 100 gal black tanks. Fresh water weighs about 8.3 lb per US gallon, so a full fresh tank uses roughly 631 lb of the cargo capacity before anything else is loaded.
Among the 8 Durango Gold floorplans KZ lists for 2027 with a published weight, it is number 2 by unloaded weight, in a range from 13,400 lb (G310RLQ) to 15,700 lb (G382MBF). Every figure in that comparison is KZ’s, for the same model year.
Every number on this page was read on 5 Nov 2026 from KZ’s own floorplan page for the Durango Gold G366FBQ, whose floorplan drawing KZ labels 2027. KZ notes that its UVW reflects a rolling average for the model and that your trailer will vary with optional equipment.
How the G366FBQ differs from the other seven Durango Gold floorplans. Most distinctive first. How these ranks are worked out.
- Cargo capacity, 3,400 lb: largest of eight; next is the G310RLQ (3,100 lb).
- Cargo capacity as a share of GVWR, 19.4%: largest of eight; next is the G310RLQ (18.8%).
- Dry pin weight, 2,800 lb: lightest of eight; next is the G390MLQ (2,900 lb).
- Dry weight, 14,100 lb: second-lightest of eight, between the G310RLQ (13,400 lb) and the G390MLQ (14,550 lb).
- Length, 40 ft 5 in: second-shortest of eight, between the G310RLQ (34 ft 11 in) and the G359ROQ (41 ft 8 in).
- Black tank, 100 gal: largest of eight, level with the G388FLS; next are the G310RLQ, G359ROQ and four others (50 gal).
- Dry pin weight as a share of dry weight, 19.9%: shared with the G390MLQ; of eight, one smaller and five larger, nearest the G382MBF (18.5%) and the G388FLS (20.3%).
- GVWR, 17,500 lb: shared with the G390MLQ and G393MKF; of eight, one lower and four higher, nearest the G310RLQ (16,500 lb) and the G359ROQ, G382MBF and two others (17,995 lb).
Next to the G310RLQ, the nearest lighter floorplan by dry weight, the G366FBQ is 700 lb heavier by dry weight, has a GVWR 1,000 lb higher, has 300 lb more cargo capacity, has a dry pin weight 160 lb lighter, is 5 ft 6 in longer and has a black tank 50 gal larger; the two publish the same exterior height, interior height, fresh tank, grey tank and sleeping capacity.
Next to the G390MLQ, the nearest heavier floorplan by dry weight, the G366FBQ is 450 lb lighter by dry weight, has 450 lb more cargo capacity, has a dry pin weight 100 lb lighter, is 2 ft shorter and has a black tank 50 gal larger; the two publish the same GVWR, exterior height, interior height, fresh tank, grey tank and sleeping capacity.
02 Full specifications
Dimensions
- Exterior length
- 40' 5"
- Exterior height
- 13' 6" (with A/C)
- Exterior width
- 101"
- Interior height
- 80"
Weights
- Dry / unit base weight (UVW)
- 14,100 lb
- GVWR (max loaded)
- 17,500 lb
- Net cargo / payload (CCC)
- 3,400 lb
- Hitch / dry pin weight
- 2,800 lb
Capacities
- Fresh water
- 76 gal
- Grey water
- 90 gal
- Black water
- 100 gal
- Propane
- 60 lb
Running gear
- Hitch type
- Fifth wheel (pin box)
- Tire size
- 17.5"
Sleeping & layout
- Sleeps
- 4
- Refrigerator
- 24 cu ft
- Awning
- 19'/11' opt.
How these published figures sit against the rest of the catalogue: fifth wheel pin weight and payload; fresh, grey and black tank sizes; camper trailer size chart.
Drawn to scale
Weight budget
Size, with end view
Holding tanks
Axles, wheels and nose shape are schematic; not a floorplan. Data: dataset.
Towing it
Check your vehicle. Enter the ratings from your owner’s manual and the door-pillar placard.
Compares your figures with this page’s published GVWR (17,500 lb) and the upper loaded pin estimate (4,375 lb, a rule of thumb). Your vehicle’s placard and the trailer’s own weight label govern.
Loaded range: 15–25% of GVWR on the pin, a rule of thumb, not a measurement of this unit. No truck ratings or hitch classes (why; NHTSA, DOT HS 809 433). The range starts at the published dry figure, because loaded is never lighter than dry.
03 The Durango Gold floorplan family
KZ lists 12 Durango Gold floorplans for 2027; this site profiles every one with a published weight, from KZ’s own floorplan pages.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| G358RPQ | 36' 8" | 4 | Catalogued · dealer stock only |
| G383RLQ | 41' 5" | 4 | Catalogued · dealer stock only |
| G310RLQ | 34' 11" | 4 | Profiled |
| G366FBQ | 40' 5" | 4 | Profiled |
| G391RKF | 42' 5" | 6 | Catalogued · dealer stock only |
| G390MLQ | 42' 5" | 4 | Profiled |
| G393MKF | 42' 11" | 6 | Profiled |
| G384MSQ | 42' 3" | 4 | Profiled |
| G359ROQ | 41' 8" | 4 | Profiled |
| G388FLS | 42' 11" | 6 | Profiled |
| G382MBF | 42' 5" | 8 | Profiled |
| G312MLQ | 34' 11" | 4 | Catalogued · KZ prints no weights on its page |
KZ lists 12 Durango Gold floorplans. Every 2027 plan with a published weight has a page here; the rest are catalogued with the reason against each.
04 Notes on this floorplan
What KZ does not publish for the G366FBQ
KZ’s page prints no axle count and no price against this floorplan, so none is given. Nothing is filled from a sibling floorplan, a different model year or a dealer listing.
Read the label on the trailer
Federal rules put a load-carrying label inside every RV trailer: its unloaded weight with full propane, its cargo carrying capacity and its GVWR (49 CFR 571.110 and 571.120). Those figures come from the trailer itself and govern the towing decision.
05 How it compares
13,400 lb UVW and 16,500 lb GVWR, against this plan’s 14,100 lb and 17,500 lb.
14,550 lb UVW and 17,500 lb GVWR, against this plan’s 14,100 lb and 17,500 lb.
06 Loading it for a trip
A full 76-gallon fresh tank is about 631 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 19% of the G366FBQ’s 3,400 lb cargo capacity, leaving 2,769 lb (692 lb per rated berth). Across 8 Durango Gold floorplans the water share runs 19% to 27%, and this plan’s is the lowest. Nearest on that share: Durango Gold G310RLQ at 20%. Your own unit’s figure is on the label inside its entry door (49 CFR 571.120 S10.4.3).
07 Where this floorplan sits
Closest sibling: the Durango Gold G390MLQ, nearest on the published figures. It differs on 5 of the 9 fields both publish (this plan first): length 40 ft 5 in vs 42 ft 5 in; dry weight 14,100 lb vs 14,550 lb; cargo capacity 3,400 lb vs 2,950 lb; hitch weight 2,800 lb vs 2,900 lb; black tank 100 gal vs 50 gal. They match on sleeps, GVWR, fresh tank and grey tank.
| Durango Gold plans | This plan | Position, low to high | Range |
|---|---|---|---|
| GVWR (lb) | 17,500 | 2–4 of 8 | 16,500–17,995 |
| Dry weight (lb) | 14,100 | 2 of 8 | 13,400–15,700 |
| Cargo capacity (lb) | 3,400 | 8 of 8 | 2,295–3,400 |
| Hitch weight (lb) | 2,800 | 1 of 8 | 2,800–3,150 |
| Length | 40 ft 5 in | 2 of 8 | 34 ft 11 in–42 ft 11 in |
| Black tank (gal) | 100 | 7–8 of 8 | 50–100 |
| Sleeps | 4 | 1–5 of 8 | 4–8 |
Either side of it by GVWR: Durango Gold G310RLQ is 1,000 lb lighter (16,500 lb GVWR); Durango Gold G390MLQ matches it at 17,500 lb GVWR.
| Nearest Durango Gold siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Durango Gold G366FBQ | 40 ft 5 in | 4 | 14,100 | 17,500 | 3,400 | 2,800 | 76 |
| Durango Gold G390MLQ | 42 ft 5 in | 4 | 14,550 | 17,500 | 2,950 | 2,900 | 76 |
| Durango Gold G384MSQ | 42 ft 3 in | 4 | 14,900 | 17,995 | 3,095 | 3,050 | 76 |
| Durango Gold G388FLS | 42 ft 11 in | 6 | 15,330 | 17,995 | 2,665 | 3,110 | 76 |
| Durango Gold G359ROQ | 41 ft 8 in | 4 | 15,100 | 17,995 | 2,895 | 3,150 | 76 |
| Durango Gold G310RLQ | 34 ft 11 in | 4 | 13,400 | 16,500 | 3,100 | 2,960 | 76 |
All 8 Durango Gold floorplans: Durango Gold line hub.
| Other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| G366FBQ | 17,500 | 14,100 | 4 | 40 ft 5 in |
| Pinnacle 36FBTS | 17,500 | 14,270 | 4 | — |
| Seismic 359 | 17,500 | 13,490 | 6 | — |
| Model Z 3400 | 17,495 | 13,898 | — | 38 ft 11 in |
| Torque 385 | 17,590 | 13,732 | 8 | 43 ft 5 in |
| Vengeance Rogue 391T145 | 17,385 | 14,014 | — | 45 ft 3 in |
| North Point 387FBTS | 17,650 | 14,830 | 4 | 42 ft 11 in |
Against the G366FBQ: the Seismic 359 sleeps 2 more; the Model Z 3400 is 5 lb lighter and 2 ft shorter.
08 Common questions about the G366FBQ
How much does the G366FBQ weigh?
14,100 lb dry; 17,500 lb GVWR, the most it may weigh loaded.
How much can the G366FBQ carry?
3,400 lb, 19% of its GVWR (median across 334 fifth wheels here: 18%). A full fresh tank uses 631 lb of it.
What is the pin weight of the G366FBQ?
2,800 lb dry, 20% of the dry weight (median across 540 fifth wheels here: 19%).
What size tow vehicle does the G366FBQ need?
A tow rating of at least 17,500 lb, plus payload for the loaded pin weight, passengers and cargo.
How many people does the G366FBQ sleep?
It is rated to sleep 4. 3 of the 8 Durango Gold floorplans that publish a count sleep more.
What are the tank capacities on the G366FBQ?
Fresh 76, grey 90, black 100 gallons. Off hookups, fresh water runs out first.
How long is the G366FBQ?
40' 5" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
14 of the 18 fields this catalogue tracks are published for the G366FBQ. Not published: slide count, axle count, air conditioning, tire size (a description is published, a size is not).
Sourcing rules: methodology.
10 Manuals & documents
Sources: kz-rv.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 17 recall campaigns and 10 owner complaints (model years 2005 on) against the Durango line (a recall and a complaint are not the same thing).
What to look at on a used one. Across the 10 complaints filed on this line the most-reported components are structure (50%), tires (20%) and suspension (10%).
Recall coverage here is not complete, and complaints are owners’ unverified reports (how this record is built). Check a specific VIN at NHTSA before you buy. Full tables are on the Durango line page.