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Used
Class C Diesel
– Motor Home

2021 Newmar Supreme Air 4051

Length: 41.2
Slides: 3
Sleeps: 4
Miles: 10616
Fuel: Diesel
Stock#: K6173B
VIN# 1FVHC5DV5LHLP3252

Sale Price

$389,995

Price

$415,995

Est. Payment*

$2607 mo.
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2021 Newmar Supreme Air 4051 Details

Stock#: K6173B
VIN#: 1FVHC5DV5LHLP3252
Year: 2021
RV Type: Class C

This RV is for sale at our

Kent Location

Store Details
2021 Newmar Supreme Air 4051 for sale. If you are looking for the best way to travel across the country in style, and comfort, an RV is the best way to go. Take road trips anytime with the Supreme Air. Set out across the country, visit landmarks, weekend camping trips, travel around in style and comfort without the need for a hotel. It is loaded with features, options, and incredible comfort throughout. Contact us today for more details about this Newmar Supreme Air. As a family-owned, award-winning local RV dealer with multiple locations in Sumner, Everett, Kent, and Mt. Vernon, Washington, Poulsbo RV is dedicated to helping you find the perfect travel companion. Let our knowledgeable team assist you in selecting the ideal RV that best for you.  Stock#: K6173B | 2021 Newmar Supreme Air.
  • RV Type: Class C Diesel
  • Make: Newmar
  • Model: Supreme Air
  • Model#: 4051
  • Miles: 10616
  • Fuel Type: Diesel
  • Length: 41.2
  • Bunkhouse: No
  • Slide Outs: 3
  • Awnings: 2
  • Sleeping Capacity: 4
  • A/C BTUS: 30000
  • Exterior Color: Barnsley Exterior / Barnsley Graphics
  • Leveling Jacks: Hydraulic
  • UVW:
  • Hitch Weight: 58000
  • GVWR: 58000
  • Engine:
  • Displacement: 12.8
  • Chassis: Freightliner
  • Max Horsepower: 505
  • Max Torque:
  • Towing Capacity: 30000
  • Black Water Tank Capacity: 60
  • Gray Water Tank Capacity: 60
Barnsley decor
Bermuda Glazed Maple high-gloss hardwood cabinetry
Tile floor in kitchen
bath
bedroom and living areas
King bed 72 x 80 in.
Sleep Number Premier/R5 air mattress
Splendide two-piece stacked washer/dryer
Dishwasher in drawer
Whirlpool 19.7 refrigerator
30 in. stainless convection microwave with recessed two-burner induction cooktop
Central vacuum
Auto Motion power shades and lambrequins
Quilted bedspread and accent pillows.
Barnsley full-paint graphics
Full-Paint Masterpiece finish with cut and buff
Girard package with two Nova side awnings
slideout covers and power window awnings
Chrome power baggage door locks
Hydraulic leveling jacks
Rear protective tow guard
Stainless exterior trim and stainless trim on baggage doors
43 in. exterior-compartment LED TV with soundbar
LED lights under off-door-side slideouts
Kitchen window
43 x 56 manual tray storage bay 4.
Freightliner M2 112 chassis
Detroit DD13-505 diesel engine
505 HP
850 lb-ft torque
100 gallon fuel capacity
Tandem rear drive axles
12.5 kW Cummins Onan diesel generator
50 amp electrical service
3000 watt true sine inverter
Eight 6-volt AGM house batteries
Hydronic zone diesel heat with continuous hot water
Two 15M Penguin heat pump air conditioners
Power water hose reel
RV Sanicon Turbo System.
Freightliner M2 112 chassis
Detroit DD13-505 diesel engine
505 HP
850 lb-ft torque
100 gallon fuel capacity
Tandem rear drive axles
12.5 kW Cummins Onan diesel generator
50 amp electrical service
3000 watt true sine inverter
Eight 6-volt AGM house batteries
Hydronic zone diesel heat with continuous hot water
Two 15M Penguin heat pump air conditioners
Power water hose reel
RV Sanicon Turbo System.
Sirius satellite radio capability
Universal Toll Module
WiFi Ranger Denali/Spruce LTE
Winegard RTT-20B & SKM300 satellite equipment
Cat 6 TV cables
Samsung LED TVs and Sony Blu-ray players
Bose soundbar/subwoofer
State seal.

2021 Newmar Supreme Air 4051 Floorplan

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Payments Beginning at
$2607 mo.
* On approval of credit. Loan term length 240 months at 7.99% APR.
See terms and conditions.​

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Let us help you find your RV

It’s easy to look for RVs online, but it’s not always easy to find the right RV.

Get Pre-Approved

Payments Beginning at $2607 mo.
* On approval of credit. Loan term length 240 months at 7.99% APR.
See terms and conditions.​
This RV is made by Newmar a leading manufacturer in the RV industry, known for delivering quality and dependable recreational vehicles.
The RV is a Class C Diesel, this is a versatile choice for camping, road trips, and extended travel.
The length of this RV is 41.2 feet. It provides ample room for travel and adventure, offering a spacious design that meets a variety of needs.
The floor plan name is 4051, also know as the model number.
This RV is equipped with 3 slide outs. It is thoughtfully designed to maximize space, comfort, and functionality for all travelers.
This RV is located at our Kent store.
The average payment is about $2607 per month on approval of credit.

Yes you can apply for RV financing on our website. Click here to apply online.

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*RV information, pricing, features, options, and availability are subject to change without notice. While we strive for accuracy, please contact Poulsbo RV to confirm current pricing, availability, specifications, features, and included equipment prior to purchase. Photos may be representative and may not reflect the actual unit in stock. Please confirm the RV is currently in stock before visiting. Sold units may take 7–10 days to be removed from our website. Advertised prices exclude applicable sales tax, license, registration, and government fees. A negotiable documentary service fee of up to $200 may be added to the sale price. Pre-delivery inspection services may be included at an additional cost. Charges vary based on the year, type, and condition of the RV.*

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When you buy from Poulsbo RV, you get what most dealers simply can’t offer.

It’s more than just a purchase; it’s ongoing support from a team that’s ready for everything your RV needs. With convenient service centers, expert service  technicians, and a knowledgeable support staff, you’re never alone on the road when you’re part of the Poulsbo RV family.

Service Departments  

Our expansive service departments are designed with the space, tools, and experienced technicians to handle everything from basic maintenance to major repairs. Whether you own a diesel motorhome or a lightweight towable, we have the capacity and expertise to keep you on the road.

Service Techs

With a large, skilled service team in place, we can serve more RVs more efficiently—delivering quicker turnarounds, dependable repairs, and consistently high-quality results.

RV Parts

We maintain one of the largest RV parts inventories in the region, so you can get what you need, when you need it. And our knowledgeable staff is always here to help you find the right solution.
  • State-of-the-art RV service facilities
  • RV Collision Repair
  • Factory-authorized warranty service
  • Over 50 RV Service Bays
  • Expert RV Technicians
  • RV walkthrough orientations
  • Large selection of new and used RVs
  • Best RV brands
  • Multiple financing lender options
  • Trade-ins welcome
  • Knowledgeable sales staff
  • Consignment Department

When you buy from us, service isn’t an afterthought.

From the moment you buy, we’re ready to support you for the long haul.

Four Locations

Family-owned and operated

Over 39 years of RV experience

Award-winning RV dealer

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Ed H

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We had the best experience purchasing our brand new RPod from Poulsbo RV Kent, the whole team was friendly and welcoming, from sales, and service all the way to management. We worked with Eric D, who was incredibly helpful and straightforward throughout the whole process. Not pushy, and genuinely wanted to see us leave with what we wanted/needed. If you’re looking for your next RV definitely go here and ask for Eric D!

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Poulsbo RV Kent

23031 Military RD. South
Kent, WA 98032

Directions
Sales
888-960-2389

Mon – Fri: 8:30am – 7:00pm
Sat: 8:30am – 7:00pm
Sun: 9:00am – 6:00pm

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888-960-4972

Mon – Fri: 8:30am – 5:00pm
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Mon – Fri: 8:00am – 5:00pm
Sat: 9:00am – 2:00pm
Sun: Closed

Poulsbo RV Sumner

2006 136th Avenue East
Sumner, WA 98390

Directions
Sales
888-960-8691

Mon – Fri: 8:30am – 7:00pm
Sat: 8:30am – 7:00pm
Sun: 9:00am – 6:00pm

Parts

888-616-8293

Mon – Fri: 8:00am – 5:00pm
Sat: Closed
Sun: Closed

Service

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Mon – Fri: 8:00am – 5:00pm
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Sun: Closed

Poulsbo RV Everett

12218 Highway 99 South
Everett WA, 98204

Directions
Sales
866-563-4134

Mon – Fri: 8:30am – 7:00pm
Sat: 8:30am – 7:00pm
Sun: 9:00am – 6:00pm

Parts

888-439-3191

Mon – Fri: 8:30am – 6:00pm
Sat: 8:30am – 7:00pm
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Poulsbo RV Mt. Vernon

510 Eleanor Lane
Mt. Vernon, WA 98273

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Sales
866-740-7645

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Sun: 9:00am – 6:00pm

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Financing terms

Payments for Poulsbo RV.com are based on 20% cash down, plus taxes, charges, and licensing, subject to credit approval and tier 1 credit rating by the lender. The payment is subject to change based on credit scores, conditions, model year, RV type, and price. The term length for RV financing varies depending on the year and sale price, with options for 240 months, 180 months, and 120 months. For travel trailers, financing term lengths are usually under 120-180 months, while some Fifth Wheels and Motor Homes can be financed for up to 180 or 240 months. Please contact us for current rates and terms on the RV you are interested in. Please note that searching online for payments on Poulsbo RV is a guideline. Additionally, the dealer may charge a documentary service fee of up to $200.

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