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• 2018 COUGAR 338RLK

The Keystone Cougar 338RLK is a luxurious fifth wheel trailer that is perfect for families or couples looking to hit the road in style. With a sleek design and modern amenities, this 2018 model is sure to impress even the most discerning traveler. The Cougar is known for its reputation of combining comfort and functionality, and the 338RLK is no exception.

Equipped with top-of-the-line features, this fifth wheel boasts a spacious layout that includes a master bedroom, full bathroom, kitchen, and living area. The three-slide, rear-living open floor plan allows for easy movement throughout the trailer, making it feel like a home away from home.

The kitchen is well-equipped with a microwave, Two-way, 12volt RV refrigerator, stove, and a large island for preparing meals, and plenty of overhead storage, while the freestanding dinette is perfect for meals or game nights. The living area features a cozy fireplace, comfortable seating, and a large television for entertainment. The master bedroom offers a queen-sized bed, wardrobe and underbed storage, combo washer and dryer unit, and space to relax after a long day of exploring.

Outside, the Cougar 338RLK shines with its large awning, outdoor kitchen, and storage compartments for all of your gear. Whether you're enjoying a scenic view or hosting a barbecue with friends, this fifth wheel has everything you need for an amazing outdoor adventure. Get ready to make unforgettable memories on the open road with this exceptional fifth wheel trailer.

• Please see photos and view YouTube walk through video for 2018 Keystone Cougar 338RLK model. 

• Disclosure:  RV featured in video is the same floorplan, but NOT my unit - Keystone-Cougar-338RLK

Floorplan & Sleeping Arrangements

Type: Fifth wheel, front bedroom floorplan

Sleeping Capacity: 4 people, with a queen bed in the master bedroom and a sofa bed

Interior Space Features: 

• The 338RLK's three slide-outs expand the living area, includes free standing dinette with chairs, a rear living layout with a fireplace, theater seating, a kitchen island, a front king bedroom, Medicine Cabinet, and Overhead Cabinetry.

Key 2018 Keystone Cougar 338RLK Specifications at a Glance

• Type: Fifth Wheel

• Floorplan Type: Front Bedroom (338RLK)

• Length: 37.2 feet

• Width: 8 feet 0 inches

• Height: 12 feet 6 inches

• GVWR: 12,490 pounds

• Dry Weight: 10,605 pounds

• Cargo Carrying Capacity: 1,850 pounds

• Hitch Weight: 2,095 pounds

• Slide Outs: 3

• Fresh Water Capacity: 81 gallons

• Gray Water Capacity: 76 gallons

• Black Water Capacity: 38 gallons

• Sleep Capacity: 4

• Sleeping Areas: Queen bed, sofa bed

Key Features:

• Furnace

• 35,000 BTU Furnace

• Two 15,000 BTU A/C Units

• Microwave

• 12 CU FT Dual Power Refrigerator (12V) Electric or Propane

• Stove w/Oven

• Large Island w/double stainless steel sinks

• Water Heater

• Fantastic Ceiling Fan

• Entertainment: Features a built-in fireplace

• 52" Smart TV on a swing arm

• Surround Sound System

• Furniture: 

• Rear couch converts to a trifold bed,

• Theater seating directly across from the TV

• Kitchen: 

• Includes a walk-in pantry and solid surface countertops

• Free Standing Dinette w/ Chairs

• Medicine Cabinet

• Lots of Overhead Cabinetry

• Outside Kitchen w/ Refrigerator, Grill & Overhead Cabinetry

• Backup camera system

• Basement overhead fishing rod storage rack

• WineGard WiFi Extender

Master Bedroom

Walk-around Queen bed-residential mattress (slide-out)

Underbed Storage

Nightstands

Windows on each side of the bed

Full Height Large wardrobe with Mirrored Sliding Closet Doors

Combo Washer and Dryer Unit

4-Drawer Dresser

32" Smart TV

Additional Wall Mirror

Bathroom

Large shower w/ glass doors

Pivot Hinge Door

Additional storage / cabinets

Exterior and Construction

• Construction: Aluminum frame with high-gloss sidewalls

• a 0-degree rated heated, enclosed underbelly (Polar Package Plus)

• Unobstructed Pass Thru Storage w/Exterior TV Hookup

• Towing: 16-inch tires with Road Armor suspension: Tires are BRAND NEW AS OF MAY 2026, NO ROADTRIP MILES

• Features: 4-point electric auto-leveling system w/power jacks in front and rear

• TWO Deep-Cycle RV/Marine Batteries. - BRAND NEW AS OF MAR 2026

• 225 lb rated Foldaway / flip-down bike rack

• 13' Power awning with LED lighting

Ownership: 2nd Owner (we've used it average of 2 times/year in 3 years)

Purchased from RV dealer