Recall 21V378 affects 18 2021 Forest River Sandpiper and Sierra trailers for improperly tightened floor-to-chassis bolts. Repair is free at any franchised Forest River dealer.
Forest River is recalling 18 2021 Sandpiper and Sierra fifth wheel and travel trailers because bolts holding the floor to the chassis were improperly tightened. If the body separates from the chassis, crash risk rises; Forest River dealers will inspect and tighten the bolts free of charge.
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What's wrong?
The floor bolts on 2021 Forest River Sandpiper and Sierra trailers fasten the trailer floor assembly to the chassis. The chassis is the steel structure under the trailer that carries the body, axle, suspension, and hitch loads during travel. Those bolts need to be tight so the floor and body stay fixed to the frame while the trailer is being towed.
On affected trailers, the bolts were not tightened properly during assembly. Forest River traced the problem to a new employee in the shelling area who had not been trained that the floor bolts needed to be tightened at that station. Loose floor bolts let the body shift against the chassis instead of staying clamped in place.
An owner can notice vibration from the trailer into the tow vehicle during transit. The trailer body also can appear to move on the chassis while it is being towed. Those are warning signs that the floor is not secured the way it should be.
Who's affected?
The floor-bolt issue touches both the trailer equipment category and the structural frame category.
| 2021 Forest River Sandpiper | Recreational vehicle/trailer |
|---|---|
| 2021 Forest River Sandpiper | body or structural component |
| 2021 Forest River Sierra | Recreational vehicle/trailer |
| 2021 Forest River Sierra | body or structural component |
| Units affected | 18 |
| Field incidents | NHTSA has logged no field incidents to date. |
A matching 2021 Forest River Sandpiper or Sierra trailer does not guarantee inclusion. Check your VIN to confirm whether your specific trailer is included.
What's the safety risk?
Improperly tightened bolts can let the trailer body detach from the chassis, increasing crash risk. During towing, treat vibration reaching the tow vehicle or visible body movement on the chassis as a reason to stop and contact a Forest River dealer before continuing. Repair is free at any franchised Forest River dealer.
What should I do?
- Check your VIN to confirm your 2021 Forest River Sandpiper or Sierra trailer is included in this recall.
- Contact a franchised Forest River dealer to schedule the free chassis-outrigger bolt tightening that secures the trailer body to the chassis.
- Bring the recall notice if Forest River mailed one. Reference recall number 21V378 and Forest River recall 03-1347 when you call.
- Ask the dealer whether the trailer is safe to tow to the appointment before moving it.
What happens at the repair
At the dealer, a Forest River technician tightens the bolts that secure the floor to the chassis outriggers. The recall repair is free, with parts and labor covered. Forest River has a general reimbursement plan on file for owners who already paid for this repair before the recall work was completed. Bring repair invoices, proof of payment, and any related service paperwork to the dealer or contact Forest River customer service for claim instructions.
| Reimbursement | Reimbursement available |
|---|
Timeline
| May 24, 2021 | NHTSA published the recall |
|---|---|
| June 9, 2021 | Owner notification mailed |
| July 3, 2021 | Dealer notification began |
| July 3, 2021 | Dealer notification ended |
| July 3, 2021 | Interim owner notification (was planned for this date) |
Frequently asked questions
What is recall 21V378?
Recall 21V378 covers 18 2021 Forest River Sandpiper and Sierra fifth wheel and travel trailers with floor-to-chassis bolts that were not tightened correctly. Improperly tightened bolts can let the trailer body detach from the chassis, increasing crash risk. Forest River dealers will tighten the bolts for free.
What should I do if my 2021 Forest River Sandpiper or Sierra is on this recall?
Check your VIN to confirm your specific trailer is included in recall 21V378. If it is, contact a franchised Forest River dealer to schedule the chassis outrigger bolt tightening. Reference recall number 21V378 when you call. The repair is free.
Is the recall repair free?
Yes. Federal recall law requires the manufacturer to perform the recall repair at no cost. Forest River dealers will tighten the bolts to the chassis outriggers free of charge, including parts and labor tied to this recall.
What is the safety risk?
The risk is trailer body separation from the chassis. Forest River reported that improperly tightened floor-to-chassis bolts can let the trailer body detach, increasing crash risk. Until the repair is complete, confirm your VIN and ask the dealer how to handle the trailer before towing it.
When were owner letters mailed?
Forest River mailed owner notification letters on June 9, 2021. If you bought the trailer used or never received a letter, the VIN check still decides whether your specific Sandpiper or Sierra is included. Use recall number 21V378 when you contact the dealer.
More information
| NHTSA campaign page | nhtsa.gov/vehicle-recalls/21V378000 |
|---|---|
| Forest River customer service | 1-574-534-4574 |
| NHTSA recall # | 21V378 |
| NHTSA recall # (full) | 21V378000 |
Source documents
-
Download Recall Document (PDF) (PDF) - Download Quarterly Report (PDF)
- Download Recall Investigation Document (PDF) (PDF)
- Download Owner Notification Letter (PDF)
- Download Owner Notice (PDF)
- Download Recall Report (PDF)
- Download Recall Acknowledgement (PDF)
This article is generated from NHTSA's primary recall filings and reviewed against the source on May 23, 2026. RecallNotify does not paraphrase NHTSA's consequence language; that text is reproduced as written above. Editorial standards →