01 What makes it unique
KZ lists the 2018 Durango 2500 D337RET at 10,750 lb dry, a GVWR of 12,500 lb, a net carrying capacity of 1,750 lb and a pin weight of 2,050 lb. Its dry weight plus its carrying capacity comes to exactly its GVWR.
It is 35' 4" long and 12' 10" high. KZ prints its tanks as 67 gal fresh, 57 gal grey, 57 gal black.
Among the 7 Durango 2500 floorplans KZ’s Durango 2500 brochure (filed in KZ’s 2018 brochure folder; the brochure prints no year) lists with a published dry weight, it is number 5 from the lightest, in a range from 10,100 lb (Durango 2500 D315RKD) to 12,440 lb (Durango 2500 D347BHF). Every figure in that comparison is KZ’s, for the same model year.
Every number on this page was read on 6 Nov 2026 from KZ’s Durango 2500 brochure (filed in KZ’s 2018 brochure folder; the brochure prints no year); model year 2018 comes from where the maker files it on its own site, not from the document’s text.
How the D337RET differs from the other six Durango 2500 floorplans. Most distinctive first. How these ranks are worked out.
- Cargo capacity, 1,750 lb: smallest of seven; next is the D347BHF (2,060 lb).
- Cargo capacity as a share of GVWR, 14%: smallest of seven; next is the D347BHF (14.2%).
- Dry weight, 10,750 lb: third-heaviest of seven, between the D340FLT (10,570 lb) and the D343MBQ (11,790 lb).
- Length, 35 ft 4 in: third-shortest of seven, between the D318RLT (34 ft 11 in) and the D325RLT (36 ft 8 in).
- Pin weight, 2,050 lb: fourth-lightest of seven, between the D318RLT (2,030 lb) and the D325RLT (2,100 lb).
- Pin weight as a share of dry weight, 19.1%: fourth-smallest of seven, between the D315RKD (19%) and the D343MBQ (19.5%).
- GVWR, 12,500 lb: lowest of seven, level with the D315RKD; next are the D318RLT, D325RLT and D340FLT (13,000 lb).
- Exterior height, 12 ft 10 in: tallest of seven, level with the D343MBQ and D347BHF; next are the D318RLT, D325RLT and D340FLT (12 ft 9 in).
Next to the D340FLT, the nearest lighter floorplan by dry weight, the D337RET is 180 lb heavier by dry weight, has a GVWR 500 lb lower, has 680 lb less cargo capacity, has a pin weight 270 lb heavier, is 3 ft 7 in shorter, stands 1 in taller and has a grey tank 40 gal smaller; the two publish the same fresh tank and black tank.
Next to the D343MBQ, the nearest heavier floorplan by dry weight, the D337RET is 1,040 lb lighter by dry weight, has a GVWR 2,000 lb lower, has 960 lb less cargo capacity, has a pin weight 250 lb lighter and is 5 ft 3 in shorter; the two publish the same exterior height, fresh tank, grey tank and black tank.
02 Full specifications
Dimensions
- Exterior length
- 35' 4"
- Exterior height
- 12' 10"
- Exterior width
- 96"
- Interior height
- Not published by KZ
Weights
- Dry / unit base weight (UVW)
- 10,750 lb
- GVWR (max loaded)
- 12,500 lb
- Net cargo / payload (CCC)
- 1,750 lb
- Hitch / pin weight
- 2,050 lb
Capacities
- Fresh water
- 67 gal
- Grey water
- 57 gal
- Black water
- 57 gal
Running gear
- Hitch type
- Fifth wheel (pin box)
- Tire size
- 16"
Sleeping & layout
- Sleeps
- Not published by KZ
- Dry Axle Weight*
- 8,700
- Refrigerator (cu. feet)***
- 8
- Water Heater Cap. (gal. G/E w/DSI)
- 12
- 1/2 Bath Cap.
- N/A
- LP Gas Cap. (lbs.)
- 60
- Furnace BTUs (1,000s)
- 35
- Model year source
- The brochure itself prints no model year; KZ files it under 2018 in its own brochure folder (kz-rv.com/brochures/2018/).
- Length basis (as printed)
- **Exterior length is measured from the center of the hitch pin to the rear bumper.
- Awning
- 17'
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 (12,500 lb) and the upper loaded pin estimate (3,125 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 figure, because loaded is never lighter than that.
03 The Durango 2500 floorplan family
KZ’s Durango 2500 brochure (filed in KZ’s 2018 brochure folder; the brochure prints no year) lists 7 Durango 2500 floorplans; every one with a printed weight has a page here.
| Floorplan | Nominal | Sleeps | Notable |
|---|---|---|---|
| Durango 2500 D315RKD | 34' 6" | — | Profiled |
| Durango 2500 D325RLT | 36' 8" | — | Profiled |
| Durango 2500 D318RLT | 34' 11" | — | Profiled |
| Durango 2500 D340FLT | 38' 11" | — | Profiled |
| Durango 2500 D337RET | 35' 4" | — | Profiled |
| Durango 2500 D343MBQ | 40' 7" | — | Profiled |
| Durango 2500 D347BHF | 40' 6" | — | Profiled |
KZ’s Durango 2500 brochure (filed in KZ’s 2018 brochure folder; the brochure prints no year) lists 7 Durango 2500 floorplans. Every one with a printed weight has a page here.
04 Notes on this floorplan
What KZ does not publish for the Durango 2500 D337RET
KZ prints no interior height, sleeping capacity for this model, so none is given. Nothing is filled from a sibling model, 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
10,570 lb dry and 13,000 lb GVWR, against this model’s 10,750 lb and 12,500 lb.
11,790 lb dry and 14,500 lb GVWR, against this model’s 10,750 lb and 12,500 lb.
06 Loading it for a trip
A full 67-gallon fresh tank is about 556 lb of water (water counts as cargo: 49 CFR 571.120 S10.4.2), 32% of the Durango 2500 D337RET’s 1,750 lb cargo capacity, leaving 1,194 lb. Across 7 Durango 2500 floorplans the water share runs 21% to 32%, and this plan’s is the highest. Nearest on that share: Durango 2500 D347BHF at 27%. 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 2500 D318RLT, nearest on the published figures. It differs on 5 of the 8 fields both publish (this plan first): length 35 ft 4 in vs 34 ft 11 in; dry weight 10,750 lb vs 10,360 lb; GVWR 12,500 lb vs 13,000 lb; cargo capacity 1,750 lb vs 2,640 lb; hitch weight 2,050 lb vs 2,030 lb. They match on fresh tank, grey tank and black tank.
| Durango 2500 plans | This plan | Position, low to high | Range |
|---|---|---|---|
| GVWR (lb) | 12,500 | 1–2 of 7 | 12,500–14,500 |
| Dry weight (lb) | 10,750 | 5 of 7 | 10,100–12,440 |
| Cargo capacity (lb) | 1,750 | 1 of 7 | 1,750–2,710 |
| Hitch weight (lb) | 2,050 | 4 of 7 | 1,780–2,300 |
| Length | 35 ft 4 in | 3 of 7 | 34 ft 6 in–40 ft 7 in |
| Grey tank (gal) | 57 | 1–5 of 7 | 57–97 |
| Black tank (gal) | 57 | 1–6 of 7 | 57–77 |
Either side of it by GVWR: Durango 2500 D315RKD matches it at 12,500 lb GVWR; Durango 2500 D318RLT is 500 lb heavier (13,000 lb GVWR).
| Nearest Durango 2500 siblings | Length | Sleeps | Dry (lb) | GVWR (lb) | CCC (lb) | Hitch (lb) | Fresh (gal) |
|---|---|---|---|---|---|---|---|
| Durango 2500 D337RET | 35 ft 4 in | — | 10,750 | 12,500 | 1,750 | 2,050 | 67 |
| Durango 2500 D318RLT | 34 ft 11 in | — | 10,360 | 13,000 | 2,640 | 2,030 | 67 |
| Durango 2500 D325RLT | 36 ft 8 in | — | 10,290 | 13,000 | 2,710 | 2,100 | 67 |
| Durango 2500 D343MBQ | 40 ft 7 in | — | 11,790 | 14,500 | 2,710 | 2,300 | 67 |
| Durango 2500 D315RKD | 34 ft 6 in | — | 10,100 | 12,500 | 2,400 | 1,920 | 67 |
| Durango 2500 D347BHF | 40 ft 6 in | — | 12,440 | 14,500 | 2,060 | 2,110 | 67 |
All 7 Durango 2500 floorplans: Durango 2500 line hub.
| Other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| Durango 2500 D337RET | 12,500 | 10,750 | — | 35 ft 4 in |
| Chaparral Lite 368TBH | 12,500 | 9,850 | — | 42 ft 0 in |
| Mesa Ridge 284RLS | 12,500 | 10,170 | — | 34 ft 3 in |
| Shasta Phoenix 368TBH | 12,500 | 9,849 | — | 42 ft 0 in |
| Eagle 31MB | 12,750 | 10,690 | 7 | 37 ft 6 in |
| Cardinal 32CHILL | 12,188 | 9,688 | — | 35 ft 3 in |
| Columbus 340RG | 12,870 | 10,464 | — | 34 ft 8 in |
Against the Durango 2500 D337RET: the Chaparral Lite 368TBH is 7 ft longer; the Mesa Ridge 284RLS is 1 ft shorter; the Shasta Phoenix 368TBH is 7 ft longer.
08 Common questions about the Durango 2500 D337RET
How much does the Durango 2500 D337RET weigh?
10,750 lb dry; 12,500 lb GVWR, the most it may weigh loaded.
How much can the Durango 2500 D337RET carry?
1,750 lb, 14% of its GVWR (median across 442 fifth wheels here: 19%). A full fresh tank uses 556 lb of it.
What is the pin weight of the Durango 2500 D337RET?
2,050 lb as published, 19% of the dry weight (median across 686 fifth wheels here: 19%).
What size tow vehicle does the Durango 2500 D337RET need?
A tow rating of at least 12,500 lb, plus payload for the loaded pin weight, passengers and cargo.
What are the tank capacities on the Durango 2500 D337RET?
Fresh 67, grey 57, black 57 gallons. Off hookups, fresh water runs out first.
How long is the Durango 2500 D337RET?
35' 4" overall, tongue or pin box included.
From the figures above.
09 What this page publishes, and what it does not
11 of the 18 fields this catalogue tracks are published for the Durango 2500 D337RET. Not published: interior height, sleeps, slide count, axle count, refrigerator, 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
No recall campaign or owner complaint in our NHTSA data names the Durango 2500 line. Read that as no result found, not as a clean record.
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 2500 line page.