Specs for 2027 Tiffin - Cornerstone Series 6
Floorplan: 645D (Class A)

Dimensions

Weights

Capacities

2027 Tiffin Cornerstone Series 6 RVs for Sale Near You

Engine/Transmission

Exterior

Electrical

Features

CHASSIS AND DRIVETRAIN
PowerGlide® SL Raised Rail Rear Engine Diesel Chassis
Cummins® X15 605 HP Diesel Engine with 1,950 lb-ft Torque 1
Chassis Cross-Bracing
Two-wheel Drive
240-Amp Alternator
Allison® 4000 MH 6-speed Automatic Transmission with Lock-up Torque Converter
Aluminum Wheels
Front 365/70R 22.5 XZA Tires
Rear 315/80R 22.5 Tires
(6) 6-Volt, 300-Amp Hours Extended Cycle AGM House Batteries
Combination Valid™ Air Leveling System with Hydraulic Leveling Jacks
Coach Tilt for Tank Dump
ZF Independent Front Suspension
Front Sway Bar
V-Ride® Air Ride Rear Suspension
Custom Tuned Koni Shock Absorbers
Side-mounted Radiator
Steerable Tag Axle
Front and Rear Disc Brakes
Full Air Brake System
Tag Axle Disc Brakes
Three-stage Compression Brake
Manual Parking Brake
Brake Sync Tow Vehicle Brake System
Driver and Passenger Side Fuel Fill
Tire Pressure Monitoring
Adaptive Cruise Control
Automatic Traction Control
Mobileye® Lane Departure Warning and Automatic High Beam Headlight Control
Collision Mitigation with Forward Warning and Active Braking
Electronic Stability Control 

CONSTRUCTION
Seamless One-piece Gel-coat Fiberglass Molded Roof Cap
6 1/2" Formed Roof Insulation
Tubular Aluminum Roof Skeleton Frames
Extraordinaire™ Ducted Air Cooling System
One-piece Molded Gel-coat Fiberglass Front and Rear Caps
Steel Cockpit Overhead Support Frame
Valto® Noble® Select All Composite Exterior Sidewalls
Tubular Aluminum Wall Skeleton Frames
High-performance Thermal Insulation in Sidewalls
Engineered Wood Sub-flooring
Laminated Elevated Sub-Flooring with 2 3/4" Thick Thermal Insulation
Steel Basement Construction
Rust Protective Undercoating
Hydraulic Slide-out Mechanisms
Extra Storage Chassis Construction

ELECTRICAL
Hydronic Heating & Electronic Appliance Equipped Coach 1
Spyder Controls Multiplex System
Firefly Integrations Eclipse Module 2
Centralized 10" Spyder System Main Monitor
Passenger Console Spyder System Color Touchscreen
Interior Entryway Spyder System Color Touchscreen
Exterior Spyder System Color Touchscreen
Spyder System Color Touchscreen Mounted Under Bedroom Overhead Cabinets
Additional Spyder Color Touchscreens Throughout Coach
12.5-Kilowatt Onan® Quiet Diesel Generator
Generator Slide Tray
(2) 3,000-Watt Pure Sine Wave Inverter Chargers, both with Auto-Gen Start and Interior Remote Control 
(3) 15,000-BTU Low Profile Air Conditioners with Heat Pumps and Condensation Drains
Front Air Conditioner Use While Driving without Generator
Aqua-Hot® 600D Heat Exchanger
50-Amp Shore Power with Powered Retract Reel
Prep for Solar Panels
Auxiliary Solar Port
Energy Management System
HD Over-the-air Antenna
Park Cable and Ground Satellite Hook-Up
Prep for In-motion Satellite
Prewiring for Winegard® Trav'ler™ Satellite
12-Volt Breaker Panel
12-Volt Disconnect Switch
Rotary Disconnect Switches for House Batteries, Chassis Batteries, and Inverter
Ground Fault Circuit Interrupter (GFCI) Outlets at Galley, Lavatories, and Sewer Bay
110-Volt Exterior Receptacle
Surge Guard® Transfer Switch 
USB & USB-C Receptacles Throughout Coach
Cornerstone Connect with Starlink

PLUMBING
Aqua-Hot® 600D Heat Exchanger 1
Aqua View Electronic  Showermiser™
Water Filter
Water Pump Switch Access from Spyder System and Sewer Bay Board
Low-point Water Drain Lines
Black Holding Tank Flush System
Grey Holding Tank Flush System
Hot & Cold Water Access at Front Cap
Heated Fresh and Holding Tank Compartment via Heat Duct
SeeLeveL™ Tank Monitor
Centralized Exterior Sewer Bay with Gravity Black and Grey Evacuation Ports
Exterior Rinse Hose with Shower Head
Sewer Bay Hand Sanitizer and Paper Towel Holders
Fresh Water Hose with Power Retract Reel
Sewer Hose Storage

EXTERIOR
Full-body Paint with (4) Layers of Clear Coat
Striped Slide-out Endwalls
High Performance Protective Film on Front Cap and Select Areas
(2) Girard® Roof-mounted Powered Patio Awnings with Integrated LED Lighting and Dual Pitch Feature
Girard® Powered Door Awning with Integrated LED Lighting
Girard® Powered Window Awning Package
Girard® Slide-out Toppers
Side-swinging Exterior Storage Doors with Gas Shocks
Lockable Handles on Compartment Doors
Motion-sensor Lights in Cargo Bay
120-Volt and 12-Volt Outlets Inside Cargo Bays
Pass-through Basement Storage
Infinity Luxury Woven Vinyl®  Basement Floor
Cargo Door Stainless Steel Rocker Trim
Basement Freezer
Opening, Dual-Pane Picture Windows
Exterior Patio Light
Fog Lights
Daytime Running Lights
Docking Lights
Exterior Ground Effects Lighting
Exterior Lighting under Slide-out
Chrome Power Heated Side-View Mirrors with Integrated Cameras
Exterior TV with Soundbar
Fast Charge USB ports within Exterior TV Compartment
Lightweight Entry Door with Integrated Screen
Deadbolt Front Entrance Lock
Lighted Entry Door Grab Handle
Automatic Stainless Steel Double Entry Step
Keyless Entry System for Front Entrance and Compartment Doors
Mud Flaps
Custom Rock Guard
Lippert™ On-The-Go™ Telescoping Ladder

INTERIOR
Solid Surface Step Well with Tile Inserts
Powered Step Well Cover
Storage Compartment Within Entry Steps
Recessed Step Well Lighting
Living Area TV
Solid Surface Countertops
Tile Slide-out Floors
Handcrafted Slide-out Fascia
Soft Touch Vinyl Ceiling
Dimmable LED Lighting
Dimmable LED Accent Lighting in Living Area
Stacked Washer and Dryer
Gold Heat® Dual Zones Heated Tile Floor
Carbon Monoxide Detector
LPG Leak Detector
Smoke Detector
Fire Extinguisher
Powered Solar and Privacy Shades
Soft-closing Drawers
Powered Roof Vents
Shark® PowerPro Flex Plus Cordless Vacuum
Interior Grab Handle at Entry Door
Egress Windows Throughout Coach
Dovetail Drawer Boxes

DRIVER'S COMPARTMENT
Genuine Leather Power Driver and Passenger Seats
Dual Driver And Passenger Seat Armrests
Swivel Bases for Driver and Passenger Seats
Powered Driver and Passenger Seat Footrest
Integrated Seat Belts on Driver and Passenger Seats
Lumbar Support on Driver and Passenger Seats
Cooled and Heated Driver and Passenger Seats
PowerDrive® Adaptive Steering Column with Intergrated Controls
Adjustable Accelerator and Brake Pedals
Ergonomic Dash with Carbon Fiber Accents and French-stitched Cover
Mounted Dash Fans
Cupholders on Driver and Passenger Side
(2) Center Storage Drawers
Generator Start & Stop Switch
USB Dash Receptacles
12-Volt Dash Receptacle
Backlit Push Button Dash Switches
Passenger Console Wireless Phone Charger
7" Passenger Console Advanced Monitor System Touchscreen
Driver Console Stationary Mount Phone Charger
Driver and Passenger Map Lights
One-piece Panoramic Windshield
Single-motor Intermittent Windshield Wipers
Side-view Cameras 1
Color Back-up Camera
360° View Camera
Blind Spot Monitoring System
Valid System featuring Media Center, Bluetooth®, and AM, FM, and Satellite Radio 2
Ceiling Mounted Speakers
JBL® Sound System 3
In-dash Navigation System via Dual Valid 12" Glass Panel Touchscreens
Overhead Cabinetry with Wooden Doors
Auxiliary Start Switch
Concealed Air Horn
Powered Opening Driver Side Window
Solid, Non-opening Passenger Side Window
Powered Solar and Privacy Windshield Shade
Powered Solar and Privacy Shades on Side Windows

KITCHEN
Bosch Residential Refrigerator with 
French Doors and Bottom Freezer
Bosch Convection Microwave with 3D Hot Air
Wolf® Induction Cooktop
Single Bowl Kitchen Sink with Single Lever Faucet and Pull-down Sprayer
Built-in Soap Dispenser
Drawer-style Dishwasher
Galley Overhead Cabinets with Pull-out Drawers
Panoramic Galley Window
Pull-Out Peninsula in Galley Base
Task Lighting
Toe Kick Lighting
Under Counter LED Accent Lighting 
Pantry Lighting
Full Tile Backsplash
Solid Surface Galley Countertop, Sink, and Cooktop Cover
InSinkErator® Instant Hot Water Faucet
12" Beverage Center

BEDROOM
Overhead Cabinets
Under Bed Storage
Bedside Windows
Bed Comforter with Throw Pillows
Handcrafted Privacy Door
LED Reading Lights
Nightstand with Solid Surface Tops
Mounted Bedroom TV
Centralized Entertainment Center 1
Decorative Handcrafted Ceiling Ring
Shoe Rack
Floor-to-ceiling Closet Space
Safe
Bedroom Fireplace

BATHROOM
(1) Bathroom and (1) Half-bath 1
(2) Glass Master Bathroom Sinks
Solid Surface Lavatory Top
Full Tile Shower Walls with Residential Glass Door (34" x 52.5")
Teak Folding Shower Seat
Shower Head with Detachable Hand-held Shower Wand
Shower Skylight
Shower LED Light with Sliding Cover
(1) Electric Gravity Flush Toilet and (1) Macerator Toilet
Towel and Toilet Paper Holders
Medicine Cabinet with Tri-view Vanity Mirror
Roof Vent Fan
Base Cabinet