NHTSA ID Number: 10249752
Manufacturer Communication Number: TSB 23-2434
Summary
This article supersedes TSB 23-2302 to update the Service Procedure and Parts List. Some 2024 Mustang
vehicles built on or before 04-Dec-2023 may exhibit a condition where the rear bumper cover has poor fitment and/or excessive body gap where it meets the quarter panel. This may be due to incorrect installation and/or poor attachment to the bumper support bracket.
This bulletin supersedes 23-2302. Reason for update: New Part/Procedure For Same Condition
Model:
Summary
This article supersedes TSB 23-2302 to update the Service Procedure and Parts List.
Issue: Some 2024 Mustang
vehicles built on or before 04-Dec-2023 may exhibit a condition where the rear bumper cover has poor fitment and/or excessive body gap where it meets the quarter panel. This may be due to incorrect installation and/or poor attachment to the bumper support bracket. To correct this condition, follow the Service Procedure to replace the rear bumper cover side bracket with revised versions.
Action: Follow the Service Procedure to correct the condition that meets the following criteria:
- 2024 Mustang

- Built on or before 04-Dec-2023
- Rear bumper cover has poor fitment and/or excessive body gap where it meets the quarter panel
Parts
| Service Part Number | Quantity | Description | Unit of Issue | Piece Quantity |
| PR3Z-17D942-C | 1 | Right Hand Rear Bumper Cover Reinforcement Bracket | 1 | 1 |
| PR3Z-17D943-C | 1 | Left Hand Rear Bumper Cover Reinforcement Bracket | 1 | 1 |
Parts – Parts To Inspect And Replace Only If Necessary
| Service Part Number | Quantity | Description | Unit of Issue |
| PR3Z-6332284-A | If Needed | Foam Block | 1 |
Quantity refers to the amount of the service part number required to repair the vehicle.
Unit of Issue refers to the number of individual pieces included in a service part number package.
Piece Quantity refers to the total number of individual pieces required to repair the vehicle.
If Needed indicates the part is not mandatory.
Service Procedure
1. Does the rear bumper cover have poor fitment and/or excessive body gap where it meets the quarter panel as shown in Figure 1?
(1). Yes – proceed to Step 2.
(2). No – this article does not apply.
Figure 1
2. Remove the rear bumper cover. Refer to Workshop Manual (WSM), Section 501-19.
3. Replace the right hand side and left hand side rear bumper cover side brackets shown in Figure 2.
Figure 2 (Left Side Shown, Right Side Similar)
NOTE: Be sure that the foam block is located in the area shown in Figure 3 on the left and right side of the vehicle when the rear bumper cover is installed. If the foam block is loose or is missing install a new foam block.
Figure 3 (Left Side Shown, Right Side Similar)
4. Reassemble the vehicle.
1 Affected Product
Vehicle
1 Associated Document
Manufacturer Communications
23-2434
24 January 2024
MC-10249752-0001.pdf 829.151KB
NHTSA ID Number: 10244706
Manufacturer Communication Number: TSB 23-2302
Summary
Some 2024 Mustang
vehicles may exhibit a condition where the rear bumper cover has poor fitment and/or excessive body gap where it meets the quarter panel. This may be due to incorrect installation and/or missing panel adhesive tape. To correct this condition, follow the Service Procedure to apply panel adhesive tape and re-install the rear bumper cover.
1 Associated Document
Manufacturer Communications
23-2302
29 September 2023
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TECHNICAL SERVICE BULLETIN
Rear Bumper Cover To Quarter Panel Poor Fitment And/Or Excessive Body Gap – Built On Or Before 04-Dec-2023
23-2434
24 January
2024 This bulletin supersedes 23-2302. Reason for update: New Part/Procedure For Same Condition
Model: Ford![]()
2024 Mustang
Built on or before 04-Dec-2023 Summary
This article supersedes TSB 23-2302 to update the Service Procedure and Parts List.
Issue: Some 2024 Mustang
vehicles built on or before 04-Dec-2023 may exhibit a condition where the rear bumper cover has poor fitment and/or excessive body gap where it meets the quarter panel. This may be due to incorrect installation and/or poor attachment to the bumper support bracket. To correct this condition, follow the Service Procedure to replace the rear bumper cover side bracket with revised versions.
Action: Follow the Service Procedure to correct the condition that meets the following criteria: • 2024 Mustang![]()
• Built on or before 04-Dec-2023
• Rear bumper cover has poor fitment and/or excessive body gap where it meets the quarter panel Parts
Service Part Number Quantity Description Unit of
Issue Piece Quantity PR3Z-17D942-C PR3Z-17D943-C 1 Right Hand Rear Bumper Cover Reinforcement 1 1
Bracket
1 Left Hand Rear Bumper Cover Reinforcement 1 1
Bracket
Parts – Parts To Inspect And Replace Only If Necessary Service Part Number Quantity Description Unit of Issue
PR3Z-6332284-A If Needed Foam Block 1
Quantity refers to the amount of the service part number required to repair the vehicle.
Unit of Issue refers to the number of individual pieces included in a service part number package. Piece Quantity refers to the total number of individual pieces required to repair the vehicle.
If Needed indicates the part is not mandatory.
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 2024 Mustang
: Inspect Bumper Cover, Replace Both Bumper Cover Brackets Includes Time To Remove And Install Bumper Cover (Do Not Use With Any Other Labor Operations Outside Of This Article) (Can Be Claimed With Operation B) Operation No.
232434A Time 0.9
Hrs. Time To Replace Any Additional Damaged Brackets (Can Be Claimed With Operation A) 232434B 0.2
Hrs. Repair/Claim Coding Causal Part: 17K835 Condition Code: 01 Service Procedure
1. Does the rear bumper cover have poor fitment and/or excessive body gap where it meets the quarter panel as shown in Figure 1?
(1). Yes – proceed to Step 2.
(2). No – this article does not apply.
Figure 1 2. Remove the rear bumper cover. Refer to Workshop Manual (WSM), Section 501-19.
3. Replace the right hand side and left hand side rear bumper cover side brackets shown in Figure 2. Figure 2 (Left Side Shown, Right Side Similar) NOTE: Be sure that the foam block is located in the area shown in Figure 3 on the left and right side of the vehicle when the rear bumper cover is installed. If the foam block is loose or is missing install a new foam block.
Figure 3 (Left Side Shown, Right Side Similar) 4. Reassemble the vehicle. © 2024 Ford
Motor Company All rights reserved.
NOTE: The information in Technical Service Bulletins is intended for use by trained, professional technicians with the knowledge, tools, and
equipment to do the job properly and safely. It informs these technicians of conditions that may occur on some vehicles, or provides information that could assist in proper vehicle service. The procedures should not be performed by “do-it-yourselfers”. Do not assume that a condition described affects your car or truck. Contact a Ford
or Lincoln
dealership to determine whether the Bulletin applies to your vehicle. Warranty Policy and Extended Service Plan documentation determine Warranty and/or Extended Service Plan coverage unless stated otherwise in the TSB article. The information in this Technical Service Bulletin (TSB) was current at the time of printing. Ford
Motor Company reserves the right de this information with updates. The most recent information is available through Ford
Motor Company’s on-line technical resources.
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