NHTSA ID Number: 10202706
Manufacturer Communication Number: TSB 21-2345
Summary
Some 2021 Bronco vehicles equipped with the Big Bend or Outer Banks trim levels built on or before 06-Aug-2021 may exhibit a whistle noise originating from the front of the hood area when traveling at speeds above 30 mph (50 km/h). If the whistle noise can be eliminated by taping off the gap between the hood and grille opening, this condition may be due to the hood seal design. To correct this condition, replace the hood seal with the improved hood seal.
Model:
2021 Bronco
Issue: Some 2021 Bronco vehicles equipped with the Big Bend or Outer Banks trim levels built on or before 06-Aug-2021 may exhibit a whistle noise originating from the front of the hood area when traveling at speeds above 30 mph (50 km/h). If the whistle noise can be eliminated by taping off the gap between the hood and grille opening, this condition may be due to the hood seal design. To correct this condition, replace the hood seal with the improved hood seal.
Action: Follow the Service Procedure to correct the condition on vehicles that meet all of the following criteria:
- 2021 Bronco
- Big Bend or Outer Banks trim level
- Built on or before 06-Aug-2021
- Whistle noise originating from the front of the vehicle between the hood and grille opening
Parts
| Service Part Number | Quantity | Description |
| M2DZ-16B990-B | 1 | Front Hood Seal |
Service Procedure
1. Replace the existing hood seal with the improved hood seal.
1 Affected Product
Vehicle
| MAKE | MODEL | YEAR |
FORD | BRONCO | 2021 |
1 Associated Document
Manufacturer Communications
21-2345
08 October 2021
NHTSA ID Number: 10199513
Manufacturer Communication Number: SSM 49979
Summary
Some 2021 Bronco vehicles equipped with Big Bend and Outer Bank trim levels may exhibit a whistle noise originating from the front of the hood area when traveling at speeds above 30 mph (50 Km/h). If the whistle noise can be eliminated by taping off the gap between the hood and grill opening, this condition may be due to the hood seal design. Hood seal replacement will not resolve this condition. Inform customers that they can continue to drive the vehicle and Ford is currently working to release an improved seal design that will be available in October 2021. Follow up with the customer to schedule an appointment once OASIS confirms part availability.
APPLICABLE VEHICLES
2021 TRUCK: G1 U725N BRONCO
2021 TRUCK: G1 U725N BRONCO
1 Associated Document
Manufacturer Communications
SSM 49979 – 2021 Bronco – Big Bend And Outer Banks – Whistle From Front Hood Area
- Replaces OEM E7TZ1502824A
- 1A Auto Lifetime Warranty
- Reference Number(s): E5TZ1502824A
- DIRECT REPLACEMENT: Exact fit for Ford Focus 2012-2018 CV6Z 16B990-A ensuring reliable performance and seamless installation
- LONG LASTING DURABILITY: Made of high-quality rubber material that proofs wear heat and deformation under extreme conditions
- EASY INSTALLATION: Plug-and-play design requires no modifications or additional tools for fast and secure hood front seal replacement
- PREVENTS NOISE AND LEAKS: Forestalls water dust and wind noise intrusion while improving cabin comfort and vehicle integrity
- PRECISION ENGINEERED: Factory-specified dimensions and shape ensure proper alignment with hood and fender components
- 【❗Fitment Or Compatibility:❗】Intended For Ford Bronco Model Years 1987,1996; Verify Year And Model Compatibility Prior To Purchase.
- ✅【Purpose:】Seals The Gap Between Hood And Cowl To Limit Water Intrusion Into The Cowl And Passenger Compartment Areas.
- ✅【Replacement Reason:】Typically Replaced When The Seal Hardens, Shrinks Or Tears From Age And Exposure.
- ✅【Construction Or Material:】Made From Flexible Automotive-Grade Rubber Designed To Maintain Shape Across Temperature Cycles.
- ✅【Testing Or Installation:】OE-Style Profile And Fitment; Installs Using Factory Attachment Points For A Direct Replacement Fit.
Last update on 2026-05-24 / Affiliate links / Images from Amazon Product Advertising API
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Warranty Status: Eligible under provisions of New Vehicle Limited Warranty (NVLW)/Service Part Warranty (SPW)/Special Service Part (SSP)/Extended Service Plan (ESP) coverage. Limits/policies/prior approvals are not altered by a TSB. NVLW/SPW/SSP/ESP coverage limits are determined by the identified causal part and verified using the OASIS part coverage tool. Labor Times Description Operation No. Time 2021 Bronco Big Bend/Outer Banks: Replace The Hood Seal (Do Not Use With Any Other Labor Operations) 212345A 0.3 Hrs. Repair/Claim Coding Causal Part: 16B990 Condition Code: 42
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