01 What makes the 2018 336FBOK different
The Eagle 336FBOK sits in the full-size tier of Jayco's Eagle fifth wheels, above the half-ton Eagle HT and below the luxury North Point and Pinnacle coaches.
Across the 2 model years of the 336FBOK on this site (2018 to 2020), the 2018 record has the lightest dry weight, 11,245 lbs; the same GVWR as 2020 (13,750 lbs); the largest cargo capacity, 2,505 lbs; the lightest dry pin weight, 2,115 lbs; the longest exterior length, 39' 9".
Against the 2020 336FBOK, the next model year on this site, 5 of the 8 fields both records publish differ: dry weight 11,245 lbs to 11682 lbs (+437 lb); cargo capacity 2,505 lbs to 2,068 lbs (-437 lb); dry pin weight 2,115 lbs to 2216 lbs (+101 lb); exterior length 39' 9" to 39'8" (-1 in); height with A/C 154" to 13'0" (+2 in). Written differently but the same figure: GVWR and exterior width.
Among the 5 Jayco Eagle fifth wheels with a 2018 page on this site, the 336FBOK is 3rd heaviest of 5 by dry weight; 3rd highest of 5 by GVWR; 3rd largest of 5 by cargo capacity; 3rd longest of 5 by exterior length. By dry weight, the lightest is the 321RSTS at 10,310 lbs and the heaviest is the 355MBQS at 12,335 lbs.
02 Full 2018 specifications
Dimensions
- Exterior length
- 39' 9"
- Exterior width
- 96"
- Width, slides out
- Not published
- Exterior height
- Not published
- Exterior height (w/ A/C)
- 154"
- Interior height (main)
- Not published
Weights
- Dry / unit base weight (UVW)
- 11,245 lbs
- GVWR (max loaded)
- 13,750 lbs
- Net cargo / payload (CCC)
- 2,505 lbs
- Dry pin weight
- 2,115 lbs
Running gear
- Tire size
- Not published
- Hitch type
- Fifth-wheel (in-bed)
- Model year of record
- 2018
Capacities
- Fresh water
- Not published
- Grey water
- Not published
- Black water
- 87 gal
- LP / propane
- Not published
- LP / propane, optional
- Not published
Galley & systems
- Water heater
- Not published
- Furnace output
- Not published
- Furnace, auto-ignition
- Not published
- Outside storage compartments
- Not published
Sleeping
- Sleeps
- Not published
Towing it
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 What changed for the 2018 model year
2018 is the earliest model year of the 336FBOK on this site, so there is no earlier record to set it against. Section 01 compares it with 2020.
| Model year | Dry (UVW) | GVWR | Dry pin | Sleeps | Tire size |
|---|---|---|---|---|---|
| 2018 | 11,245 | 13,750 | 2,115 | Not published | Not published |
| 2020 | 11682 | 13750 | 2216 | Not published | Not published |
All years side by side: the Jayco Eagle 336FBOK parent page.
Where these numbers come from
Every figure on this page is read from the 2018 Jayco Eagle HT factory brochure (RVUSA brochure library) (how sources are handled).
Fields Jayco does not publish for 2018
For this model year the factory record has no width with slides out, exterior height, interior height, tire size, fresh tank, grey tank, propane, optional propane, water heater, furnace output, auto-ignition furnace, outside storage compartments and sleeping count. Those rows read “Not published” and are not filled in from another year.
04 Buying a 2018 336FBOK at 8 model years old
Its age, and the date on its label
A 2018 336FBOK is 8 model years old in 2026. Its build month is on the certification label (49 CFR 567.4(g)(2)), not in the model year.
Tires: size and date code
Jayco publishes no tire size for 2018, so read the size off the sidewalls. Read the four-digit date code at the end of each tire's identification number, spare included (49 CFR 574.5(b)(3)).
NHTSA record for model year 2018
For model year 2018, NHTSA's files hold 8 recall campaigns and 8 owner complaints under the Jayco Eagle name (see Jayco Eagle year by year). Campaigns by component: Equipment (21V685000, 21V425000, 18V364000, 18V075000, 18V073000, 18V072000, 17V350000); Trailer hitches (18V286000). Complaints on 2018 units name Equipment (3), Fuel system, other (1), Service brakes (1), Structure (1), Unknown OR other (1) and Wheels (1). They are filed against the line, not this floorplan alone.
05 How it compares — and to its other years
Differs from 2018 on 5 of 8 shared fields, dry weight, cargo capacity and dry pin weight among them.
06 Loading it for a trip
Cargo capacity on the 336FBOK is 2,505 lb.
07 Where this floorplan sits
| 2018 fifth wheels from other lines, nearest by GVWR | GVWR (lb) | Dry (lb) | Sleeps | Length |
|---|---|---|---|---|
| 336FBOK | 13,750 | 11,245 | — | 39 ft 9 in |
| Seismic 313T | 16,000 | 10,815 | — | — |
Against the 2018 336FBOK: the 2018 Seismic 313T is 2,250 lb heavier.
08 Common questions about the 336FBOK
How much does the 336FBOK weigh?
11,245 lb dry; 13,750 lb GVWR, the most it may weigh loaded.
How much can the 336FBOK carry?
2,505 lb, 18% of its GVWR (median across 307 fifth wheels here: 19%).
What is the pin weight of the 336FBOK?
2,115 lb dry, 19% of the dry weight (median across 386 fifth wheels here: 19%).
What size tow vehicle does the 336FBOK need?
A tow rating of at least 13,750 lb, plus payload for the loaded pin weight, passengers and cargo.
How long is the 336FBOK?
39' 9" overall, tongue or pin box included.
How does the 2018 336FBOK differ from other model years?
Set against the published 2020 336FBOK record, 4 figures differ: dry weight 11,245 lb in 2018 against 11,682 lb in 2020; cargo capacity 2,505 lb in 2018 against 2,068 lb in 2020; dry hitch weight 2,115 lb in 2018 against 2,216 lb in 2020; exterior length 39 ft 9 in in 2018 against 39 ft 8 in in 2020. 2 other figures both years publish are identical. This floorplan is profiled for 2 model years here (2018 to 2020).
From the figures above.
09 What this page publishes, and what it does not
7 of the 18 fields this catalogue tracks are published for the 336FBOK. Not published: exterior height, interior height, fresh tank, grey tank, sleeps, slide count, axle count, tire specification, awning, refrigerator, air conditioning.
Sourcing rules: methodology.
10 Manuals & documents
Sources: jayco.com (linked below); the full source note is at the foot of the page.
11 NHTSA safety record
NHTSA holds 44 recall campaigns and 114 owner complaints against the Eagle line. They are counted separately: a recall is a confirmed defect with a remedy, a complaint one owner’s unverified account.
What to look at on a used one. Across the 114 complaints filed on this line the most-reported components are tires (23%), structure (18%) and equipment (13%).
Reports that name the 336FBOK
1 of those record name this floorplan specifically rather than the line as a whole.
| Type | Date | Reference | What it says |
|---|---|---|---|
| Complaint | 4 May 2017 | ODI 10983472 | Tl* the contact owns A 2017 jayco eagle 336FBOK mounted on A 2017 ford F-350. While driving approximately 35 mph, the front and rear passenger tires sheared off and caused the trailer to… |
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 Eagle line page.