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Stock Number: 054029F
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: White
Description: New 2025 Forest River RV Sierra 3990FL
Details: NO HIDDEN FEES!!! WE DO NOT CHARGE PDI OR FREIGHT FEES!!! LET US HELP YOU SAVE MONEY!!! Forest ...
Updated: Thursday, June 04, 2026 07:57 AM
Location: Bryan, Texas
Seller: T&S RV & Sport - Bryan
Stock Number: 82172
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Number of Axles: Tandem
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Wednesday, May 20, 2026 10:32 AM
Location: Greencastle, Pennsylvania
Seller: Keystone RV Center
Stock Number: 219669
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Thursday, June 04, 2026 09:42 AM
Location: Conroe, Texas
Seller: Fun Town RV-Conroe
Stock Number: 348072
Exterior Length: 3 ft 7 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Width: 8 in
Description: NEW 2026 FOREST RIVER SIERRA 3990FL – 348072
**Forest River Sierra fifth wheel 3990FL highlights:**
- King Bed
- Front Living Area
- Tw...
Updated: Friday, May 22, 2026 07:53 AM
Location: Mesa, Arizona
Seller: General RV Colorado
Stock Number: 87679
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: King Bed Front Living Area Two Tri-Fold Hide-A...
Updated: Thursday, June 04, 2026 08:03 AM
Location: Georgetown, Texas
Seller: Ron Hoover RV & Marine - Georgetown
Stock Number: 220885
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Thursday, June 04, 2026 09:42 AM
Location: Anna, Illinois
Seller: Fun Town RV-Cleburne
Stock Number: 219670
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Thursday, June 04, 2026 09:42 AM
Location: Rockwall, Texas
Seller: Fun Town RV-Cleburne
Stock Number: FR054855
Condition: New
Description: Elevate your camping experience with the 2026 Forest River Sierra 3990FL! The luxurious front living area boasts deluxe amenities, including plenty...
Updated: Thursday, June 04, 2026 07:58 AM
Location: Muskogee, Oklahoma
Seller: Rocky Ridge RV - Muskogee
Stock Number: 93398
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: King Bed Front Living Area Two Tri-Fold Hide-A...
Updated: Thursday, June 04, 2026 08:03 AM
Location: San Antonio, Texas
Seller: Ron Hoover RV & Marine - San Antonio
Stock Number: 87678
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: King Bed Front Living Area Two Tri-Fold Hide-A...
Updated: Thursday, June 04, 2026 08:03 AM
Location: Texarkana, Texas
Seller: Ron Hoover RV & Marine - Texarkana
Stock Number: 217297
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Thursday, June 04, 2026 09:42 AM
Location: Jackson, Michigan
Seller: Fun Town RV - Jackson
Stock Number: 82216
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Number of Axles: Tandem
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Wednesday, May 20, 2026 10:32 AM
Location: Greencastle, Pennsylvania
Seller: Keystone RV Center
Stock Number: HL6081
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Number of Axles: Tandem
Description: New 2026 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: King Bed Front Living Area Two Tri-Fold Hide-A...
Updated: Sunday, May 31, 2026 03:13 AM
Location: Andover, Minnesota
Seller: North Country RV
Stock Number: N055336
Exterior Length: 43 ft 6 in
Condition: New
Exterior Color: WHITE
VIN: 4X4FSES28TJ055336
Description: Sales_pitch: The RV for sale is a New 2026 Sierra Fifth Wheel by Forest River RV that and much more. This Sierra 3990fl Fifth Wheel we...
Updated: Friday, June 05, 2026 08:01 AM
Location: Ponchatoula, Louisiana
Seller: Berryland Campers - Ponchatoula
Stock Number: T89497
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Number of Axles: Tandem
Description: New 2025 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Thursday, June 04, 2026 08:03 AM
Location: Claremore, Oklahoma
Seller: Ron Hoover RV & Marine - Tulsa
Stock Number: T89498
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Number of Axles: Tandem
Description: New 2025 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Thursday, June 04, 2026 08:03 AM
Location: Claremore, Oklahoma
Seller: Ron Hoover RV & Marine - Tulsa
Stock Number: 82729
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Exterior Color: BEIGE
Number of Axles: Tandem
Description: New 2025 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Thursday, June 04, 2026 08:03 AM
Location: Slaton, Texas
Seller: Ron Hoover RV & Marine - Lubbock
Stock Number: 81996
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Number of Axles: Tandem
Description: New 2025 Forest River RV Sierra 3990FL
Forest River Sierra fifth wheel 3990FL highlights:
Full and Half Lofts
King Bed
Walk-In Shower
Front ...
Updated: Wednesday, May 20, 2026 10:32 AM
Location: Salem, Virginia
Seller: Petes RV - Salem
Stock Number: 81646
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Number of Axles: Tandem
Description: New 2025 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower ...
Updated: Wednesday, May 20, 2026 10:32 AM
Location: Chesapeake, Virginia
Seller: Camper Liquidators-Chesapeake
Stock Number: DG1505
Exterior Length: 43 ft 6 in
Sleeps: 8
Number of Slide Outs: 5
Condition: New
Number of Axles: Tandem
Description: New 2025 Forest River RV Sierra 3990FL
Details: Forest River Sierra fifth wheel 3990FL highlights: Full and Half Lofts King Bed Walk-In Shower Fr...
Updated: Monday, May 11, 2026 02:12 PM
Location: Sussex Corner, New Brunswick, Canada
Seller: LDG - Doug's Recreation
