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Condition: Used
Exterior Length: 44 ft
Sleeps: 6
Number of Slide Outs: 3
Mileage: 37,700 mi
Number of Rear Axles: Tandem
Description: 2014 Newmar MountainAire 4369. 450 Cummins, 37,700 miles. Onan Generator w/ Kubota Diesel. Full Size Fridge, Dishwasher, and Microwave. All upholst...
Updated: Wednesday, September 09, 2026 11:10 AM
Seller: David Hames
Condition: Used
Exterior Length: 43 ft 9 in
Sleeps: 4
Number of Slide Outs: 3
Mileage: 89,000 mi
Gross Vehicle Weight: 44,600 lb
Description: Used 2014 Newmar Mountain Aire 4369
Details: The Mountain Aire 4369 motor home by Newmar offers triple slides and a bath and a half. As you enter ...
Updated: Saturday, October 24, 2026 03:00 AM
Seller: Best Choice Trailers and RV
Condition: Used
Exterior Length: 44 ft
Number of Slide Outs: 4
Mileage: 91,250 mi
Exterior Width: 8 in
Stock Number: 25-334C
Description: 2008 NEW MOUNTAIN AIRE 4521. 2 OWNER COACH SOLD BY STEINBRING! STORED INSIDE
2008 NEWMAR MOUNTAIN AIRE 4521
SPARTAN CHASSIS
450HP ISM CUMMINS ENGI...
Updated: Friday, October 23, 2026 11:09 AM
Seller: Steinbring Motorcoach
Condition: Used
Exterior Length: 44 ft
Number of Slide Outs: 4
Mileage: 100,608 mi
Exterior Width: 8 in
Stock Number: 26-335C
Description: 2007 NEWMAR MOUNTAIN AIRE 4521. VERY CLEAN, EXEMPLARY EXAMPLE OF NEWMAR BUILD QUALITY. 15,000 LBS TOWING CAPACITY!
2007 MOUNTAIN AIRE 4521
MOUNTA...
Updated: Friday, October 23, 2026 02:01 AM
Seller: Steinbring Motorcoach
Used 2020 NEWMAR MOUNTAIN AIRE 4543
Dover, Florida
MSRP$414,999 USD $379,777
View Floor Plan
Condition: Used
Exterior Length: 3 ft 8 in
Sleeps: 3
Number of Slide Outs: 3
Mileage: 34,328 mi
Gross Vehicle Weight: 54,000 lb
Description: CONSIGNMENT 2020 NEWMAR MOUNTAIN AIRE 4543 – 365028
Newmar Mountain Aire 4543 Class A diesel motorhome highlights:
Bath and a Half
...
Updated: Friday, September 11, 2026 03:31 AM
Seller: General RV Center - Dover
Condition: New
Exterior Length: 44 ft
Sleeps: 5
Number of Slide Outs: 3
Exterior Width: 8 in
Stock Number: 355408
Description: NEW 2027 NEWMAR MOUNTAIN AIRE 4551 – 355408
Newmar Mountain Aire 4551 Highlights:
• Cummins X 525 hp diesel with Allison 4000 MH
• 105‑...
Updated: Friday, October 16, 2026 04:23 AM
Seller: Independence RV by General RV Center - Winter Garden
Condition: New
Exterior Length: 3 ft 8 in
Sleeps: 8
Number of Slide Outs: 3
Exterior Width: 8 in
Stock Number: 347753
Description: NEW 2026 NEWMAR MOUNTAIN AIRE 4551 – 347753
**Newmar Mountain Aire Class A diesel motorhome 4551 highlights:**
- Bath and a Half
- Two ...
Updated: Tuesday, August 18, 2026 03:36 AM
Seller: General RV Center - Virginia
Condition: Used
Exterior Length: 44 ft
Sleeps: 8
Number of Slide Outs: 3
Mileage: 53,953 mi
Gross Vehicle Weight: 54,000 lb
Description: USED 2022 NEWMAR MOUNTAIN AIRE 4551 – 367444
Newmar Mountain Aire 4551 Class A Diesel Motorhome highlights:
Front Living Space
Bath and...
Updated: Friday, October 16, 2026 03:53 AM
Seller: General RV Center
Condition: Used
Exterior Length: 44 ft 10 in
Mileage: 10,245 mi
Gross Vehicle Weight: 54,000 lb
Horsepower: 500 HP
Engine Manufacturer: CUMMINS
Description:
Updated: Tuesday, October 13, 2026 03:40 PM
Seller: RV Country - Mesa, AZ
Condition: Used
Exterior Length: 44 ft
Number of Slide Outs: 3
Mileage: 60,913 mi
Exterior Width: 8 in
Stock Number: 24-316C
Description: 2015 NEWMAR MOUNTAIN AIRE 4553
2015 NEWMAR MOUNTAIN AIRE 4553
FREIGHTLINER CHASSIS
500HP ISX CUMMINS ENGINE
BATH AND A HALF
3 POWER SLIDEOUTS, INC...
Updated: Friday, October 23, 2026 11:09 AM
Seller: Steinbring Motorcoach
Condition: Used
Exterior Length: 45 ft
Number of Slide Outs: 3
Mileage: 64,511 mi
Stock Number: CGP9817
VIN: 4UZFCTBG7FCGP9817
Description: Sales_pitch: The RV for sale is a Used 2015 Mountain Aire Class A Diesel by Newmar RV that and much more. This Mountain Aire Standard ...
Updated: Friday, October 23, 2026 08:01 AM
Seller: Berryland Campers - Ponchatoula
Condition: Used
Exterior Length: 33 ft
Number of Slide Outs: 3
Mileage: 34,818 mi
Exterior Width: 8 in
Stock Number: 26-314C
Description: 2019 NEWMAR NEW AIRE 3343!
2019 NEWMAR NEW AIRE 3343
FREIGHTLINER CHASSIS
THREE POWER SLIDEOUTS, INCLUDING ONE FULL WALL
GLACIER EXTERIOR FULL BOD...
Updated: Friday, October 23, 2026 11:09 AM
Seller: Steinbring Motorcoach
Condition: Used
Stock Number: SP-MLM7505A
VIN: 4UZACEFCXKCLM7505
Description:
Updated: Friday, October 23, 2026 09:20 AM
Seller: DeMontrond RV - Spring
Condition: New
Exterior Length: 35 ft
Exterior Width: 8 in
Stock Number: 27-004
Exterior Color: STONEVEIL EXTERIOR FULL BODY PAINT
Air Conditioning: Yes
Description: " 2027 NEWMAR NEWAIRE 3543!"
2027 NEWMAR NEWAIRE 3543
FREIGHTLINER CHASSIS
450HP ISL CUMMINS ENGINE
THREE POWER SLIDEOUTS ONE FULL WALL
EVERETT I...
Updated: Friday, October 23, 2026 11:09 AM
Seller: Steinbring Motorcoach
Condition: New
Exterior Length: 35 ft
Sleeps: 4
Number of Slide Outs: 3
Exterior Width: 8 in
Stock Number: 355385
Description: NEW 2027 NEWMAR NEW AIRE 3543 – 355385
2027 Newmar New Aire 3543 Highlights:
• Rear bedroom with king bed and full wardrobe
• Center kit...
Updated: Tuesday, September 22, 2026 03:33 AM
Seller: General RV Center - Virginia
Condition: New
Sleeps: 4
Number of Slide Outs: 3
Mileage: 1,120 mi
Exterior Width: 8 in
Stock Number: 355386
Description: NEW 2027 NEWMAR NEW AIRE 3543 – 355386
2027 Newmar New Aire 3543 Highlights:
• Rear bedroom with king bed and full wardrobe
• Center ki...
Updated: Tuesday, September 15, 2026 03:33 AM
Seller: General RV Center - Ocala
Condition: New
Sleeps: 4
Number of Slide Outs: 3
Mileage: 1,883 mi
Exterior Width: 8 in
Stock Number: 355384
Description: NEW 2027 NEWMAR NEW AIRE 3543 – 355384
Newmar New Aire 3543 Highlights:
• Rear bedroom with king bed and full wardrobe
• Center kitchen...
Updated: Monday, September 28, 2026 04:05 PM
Seller: General RV Center
Condition: New
Exterior Length: 35 ft 10 in
Sleeps: 5
Number of Slide Outs: 3
Gross Vehicle Weight: 38,600 lb
Horsepower: 450 HP
Description: New 2027 Newmar New Aire 3543
Details: Newmar New Aire Class A diesel motorhome 3543 highlights: Full-Wall Slide Mid-Coach Bath Euro Booth Dinett...
Updated: Friday, October 23, 2026 04:13 PM
Seller: Carolina RV
Condition: New
Exterior Length: 35 ft
Stock Number: 27-NA3543
Exterior Color: STONEVEIL EXTERIOR FULL BODY PAINT
Air Conditioning: Yes
Interior Color: EVERETT INTERIOR DECOR
Description: Now ordering 2027 Newmar motorhomes! Contact us now for more details. Visit our website at /2027-newmar-lineup
"ON ORDER 2027 NEWMAR NEW AIRE 354...
Updated: Friday, October 23, 2026 11:09 AM
Seller: Steinbring Motorcoach
Condition: New
Sleeps: 6
Number of Slide Outs: 3
Exterior Width: 8 in
Stock Number: 349046
VIN: 4VZAT1D18TC096319
Description: NEW 2026 NEWMAR NEW AIRE 3543 – 349046
Experience the luxury of travel with the 2026 Newmar New Aire 3543. This exquisite motorhome is d...
Updated: Tuesday, August 18, 2026 03:36 AM
Seller: Independence RV by General RV Center - Winter Garden
Condition: Used
Sleeps: 6
Number of Slide Outs: 3
Mileage: 10,461 mi
Exterior Width: 8 in
Stock Number: 359684
Description: USED 2025 NEWMAR NEW AIRE 3543 – 359684
## Newmar New Aire 3543 highlights
* King Bed Suite
* 87" Visionary Sofa
* Three Slide-Outs...
Updated: Monday, August 17, 2026 10:16 AM
Seller: General RV Center - Draper
Condition: Used
Exterior Length: 35 ft
Number of Slide Outs: 3
Mileage: 36,145 mi
Exterior Width: 8 in
Stock Number: 27-011A
Description: 2023 NEWMAR NEW AIRE 3543
2023 NEWMAR NEW AIRE 3543
SPARTAN CHASSIS
450HP ISL CUMMINS ENGINE
THREE POWER SLIDEOUTS/ONE FULL WALL
CHARCOLE TWEED AW...
Updated: Friday, October 23, 2026 11:09 AM
Seller: Steinbring Motorcoach
Condition: Used
Exterior Length: 35 ft 10 in
Sleeps: 4
Number of Slide Outs: 3
Mileage: 13,171 mi
Horsepower: 450 HP
Description: USED 2022 NEWMAR NEW AIRE 3543 – 359406
**2022 Newmar New Aire Luxury Class A Diesel Motorhome 3543 highlights:**
- Bath and a Half
- Th...
Updated: Monday, August 17, 2026 10:16 AM
Seller: General RV Center - West Chester
Condition: Used
Exterior Length: 35 ft
Number of Slide Outs: 3
Mileage: 22,670 mi
Exterior Width: 8 in
Stock Number: 27-020A SOLD
Description: 2022 NEWMAR NEW AIRE 3543. ONE OWNER, VERY CLEAN AND WELL CARED FOR!
2022 NEWMAR NEW AIRE 3543
FREIGHTLINER CHASSIS
450HP ISL CUMMINGS ENGINE
THRE...
Updated: Friday, October 23, 2026 11:09 AM
Seller: Steinbring Motorcoach
Condition: Used
Exterior Length: 35 ft
Number of Slide Outs: 3
Mileage: 36,302 mi
Exterior Width: 8 in
Stock Number: 26-016A SOLD
Description: "ONE OWNER PURCHASED NEW FROM STEINBRING MOTOR COACH!"
"2022 NEWMAR NEWAIRE 3543!"
2022 NEWMAR NEWAIRE 3543 ONE OWNER STORED INDOORS!
SPARTAN CHAS...
Updated: Friday, October 23, 2026 11:09 AM
Seller: Steinbring Motorcoach
Condition: Used
Exterior Length: 35 ft
Number of Slide Outs: 3
Mileage: 32,444 mi
Exterior Width: 8 in
Stock Number: 27-007A
Description: 2021 NEWMAR NEW AIRE 3543! 2 OWNER COACH! VERY CLEAN!
2021 NEWMAR NEW AIRE 3543
SPARTAN CHASSIS
450HP ISL CUMMINS ENGINE
THREE POWER SLIDEOUTS, IN...
Updated: Friday, October 23, 2026 11:09 AM
Seller: Steinbring Motorcoach
Condition: New
Exterior Length: 34 ft 10 in
Sleeps: 4
Number of Slide Outs: 4
Gross Vehicle Weight: 36,500 lb
Horsepower: 360 HP
Description: New 2027 Newmar Northern Star 3418
Details: Newmar Northern Star Class A diesel motorhome 3418 highlights: Four Slide Outs Dry Bar Queen Bed Kitc...
Updated: Friday, October 23, 2026 04:13 PM
Seller: Carolina RV
Condition: New
Stock Number: NM19326
VIN: 4UZACHFC0VCXM8552
Description:
Updated: Friday, October 16, 2026 04:33 PM
Seller: RV World Yuma
