The 2008 Itasca Horizon 40TD is a highly regarded Class A diesel pusher motorhome, produced by Winnebago Industries (Itasca being a Winnebago brand). It's built on the advanced Maxum Chassis, offering a powerful ride and extensive features.

Here's a comprehensive overview of its specifications:

Key Features & Layout:

• Floor Plan: The 40TD features a layout designed for spacious living. It typically includes a front kitchen, a central living area with a sofa and dinette/chairs, a split bath (or a private central bath) with double entry, and a rear master bedroom with a queen bed and a slide-out for wardrobes/dressers.
• Sleeping Capacity: Typically sleeps 4 people.
• Slides: Features 2 large slide-outs (one encompassing the bedroom and often a bench seat/wardrobe, and another for the dinette/sofa and kitchen elements).
• Unique Features: Known for its large cross-coach storage in the basement due to the Maxum Chassis's lowered-rail design.

Chassis & Engine:

• Chassis: Maxum Freightliner Chassis (Winnebago's proprietary Freightliner chassis with a lowered-rail design).
• Engine: Cummins ISL 8.9L turbo-charged diesel engine.
• Horsepower: 425 hp @ 2,200 RPM
• Torque: 1,200 ft-lbs. @ 1,300 RPM.
• Transmission: Allison 6-speed 3000 MH transmission with Overdrive.
• Fuel Capacity: 100 gallons.
• Alternator: 170 amp.
• Brakes: 4-wheel ABS.
• Hitch: 10,000 lb. trailer hitch with 7-pin connector.
• Stylized Aluminum Wheels.

Dimensions & Weights:

• Length (Exterior): 39 ft 10 inches
• Exterior Width: 8 ft 6 inches (101.5 inches).
• Exterior Height (with AC): 12 ft 4 inches.
• Interior Height: 7 ft 2 inches (86.5 inches).
• Hitch Weight/Towing Capacity: 10,000 lbs.
• GVWR (Gross Vehicle Weight Rating): 34,320 lbs.
• GCWR (Gross Combined Weight Rating): 44,320 lbs.
• UVW (Unloaded Vehicle Weight): Approximately 29,143 lbs (varies by options).
• GAWR Front (Gross Axle Weight Rating Front): 14,320 lbs.
• GAWR Rear (Gross Axle Weight Rating Rear): 20,000 lbs.

Tank Capacities:

• Fresh Water Capacity: 103 gallons.
• Grey Water Capacity: 117 gallons.
• Black Water Capacity: 51 gallons.
• Propane Capacity: 31 gallons (approximately 131 lbs).
• Water Heater Tank: 10 gallon (Gas/Electric with Electronic Ignition DSI).

Appliances & Utilities:

• Refrigerator: 4-Door Refrigerator/Freezer (Residential French-door refrigerator optional).
• Cooktop/Oven: 3-burner Range with Oven.
• Microwave Oven: Convection Microwave Oven.
• Furnace BTU: Dual Zone Electronic Ignition Furnaces: 40,000 BTU (for 40TD). Some sources mention 65,000 BTU total.
• AC BTU: TrueAir Residential Central Air with heat pump (ducted, with heat pumps). Dual 13,500 BTU roof A/C units.
• Electrical Service: 50 amp power cord.
• Generator: 8,000 watt Cummins Onan Quiet Diesel Generator on manual slide-out.
• Batteries: 3 deep cycle coach batteries. Battery disconnect system. Auxiliary start circuit.
• Inverter: 2,000-watt inverter (often standard with residential fridge option).
• Awning: Automatic Patio Awning (often 20 ft). Automatic Front Door Awning. Topper slide-out awnings (living area and bedroom). Window awnings on all slide-out house windows (except under patio awning).
• Entertainment: 37" LCD high-definition TV in the living area. 20" LCD color TV in the bedroom. Home Theater Sound System (CD/DVD player, receiver, amplifier, 5 speakers, subwoofer, Sony). Stereo System in Bedroom (AM/FM stereo, CD/DVD player, headphone jack). RV Radio (Cab) AM/FM stereo/CD player, iPod/MP3-ready. Optional exterior entertainment center. Optional satellite dish antenna (digital, automatic King-Dome or in-motion dual LNB King-Dome).
• Leveling Jacks: HWH hydraulic leveling jacks with 3-position controls.

Construction & Exterior:

• Body Material: Aluminum body construction.
• Sidewall Construction: Fiberglass sidewalls.
• Roof: Fiberglass Roof.
• Windows: Dual-glazed thermo-insulated windows (frameless on some models).
• Storage: Large cross-coach storage due to Maxum Chassis design. One-piece polyethylene pass-through storage compartment. Side-hinged baggage doors. Pullout generator tray with one-piece door.
• Entry: Electric Flush-Floor Stepwell Cover. Automatic electric entry step. Keyless entry with remote.
• Mirrors: Chrome Dual Head Power Controlled Heated Exterior Mirrors with Turn Indicator Lights.
• Full-Length Mud Flap.
• 3M Film Front Mask.
• Rear Ladder.
• One-Piece Windshield.

Interior Features:

• Decor: Various interior color schemes (e.g., Garden View with Honey Cherry). Ceiling vinyl.
• Cabinetry: Raised panel hardwood cabinet doors. Hardwood cabinet end panels. Heavy-duty ball bearing drawer guides. Oil Rubbed Bronze Cabinetry Hardware and Bath Accessories.
• Flooring: Ceramic tile in kitchen and bath. Carpet in living area and bedroom.
• Kitchen: Solid Corian countertops with polished radius edge. Stainless steel sink with two sink covers. Pullout countertop extension with drawer and Corian top. Pull-out pantry.
• Living Area: UltraLeather Rest Easy sofa with dual controls (converts to a bed). Dining table and chairs. Pleated day/night shades. Hardwood entertainment center. Monitor system. Powered sunvisors.
• Bedroom: Queen or king Serta innerspring mattress with pillows, bedspread & throw pillows. Padded bench with storage below. Reading lights. Wardrobe with storage cabinet or optional washer/dryer prep. Ceiling fan. Headboard. Full sliding privacy door.
• Bathroom: Angle shower with textured glass shower door and shower seat. Lavatory with linen cabinet and medicine cabinet. Shower light. Roof vent with rain sensor. Porcelain toilet.
• Cab Area: UltraLeather 6-way power-assist cab seats with armrests, manual footrest (passenger), adjustable lumbar support. SmartWheel steering wheel with controls. Color rearview camera system with audio. Power door locks with keyless entry.

Optional Features (Common):

• Residential Refrigerator.
• Washer/Dryer combination unit.
• Home Theater Lounge by Villa (recliners, UltraLeather).
• Sleep Number bed.
• Exterior Entertainment Center.
• Exterior refrigerator/freezer on slide-out tray.
• Full-Body Paint.
• Solar Panel with 10-watt battery charger.

Important Note: As this is a 2008 model, it is a used vehicle. Specifications and the condition of components can vary significantly due to age, previous ownership, maintenance history, and any modifications.