NHTSA ID Number: 10216835
Manufacturer Communication Number: TSB 22-2253
Summary
Some 2021 Mustang
Mach-E vehicles built on or before 05-Oct-2021 may exhibit a clunk/knock noise from the rear of the vehicle when accelerating or braking in forward or reverse. This may be due to one of the rear upper trailing arm bushing blades contacting the inner core during high load. To correct the condition, follow the Service Procedure to replace the rear upper trailing arm.
Model:
2021 Mustang Mach-E
Built on or before 05-Oct-2021
Issue: Some 2021 Mustang Mach-E vehicles built on or before 05-Oct-2021 may exhibit a clunk/knock noise from the rear of the vehicle when accelerating or braking in forward or reverse. This may be due to one of the rear upper trailing arm bushing blades contacting the inner core during high load. To correct the condition, follow the Service Procedure to replace the rear upper trailing arm.
Action: Follow the Service Procedure to correct the condition on vehicles that meet all of the following criteria:
- 2021 Mustang Mach-E
- Built on or before 05-Oct-2021
- Clunk/knock noise from the rear of the vehicle when accelerating or braking in forward or reverse
Parts
| Service Part Number | Quantity | Description | Unit of Issue | Piece Quantity |
| LJ9Z-5500-C | 1 | Rear Upper Trailing Arm (Right) | 1 | 1 |
| LJ9Z-5500-D | 1 | Rear Upper Trailing Arm (Left) | 1 | 1 |
| W7218230-S439 | 1 | Upper Trailing Arm-to-Frame Bolt | 4 | 2 |
| W500564-S439 | 1 | Upper Trailing Arm-to-Wheel Knuckle Bolt | 4 | 1 |
W520215-S440
Ford W520-215S440, Suspension Stabilizer Bar Link Nut
Last update on 2026-06-10 / Affiliate links / Images from Amazon Product Advertising API | 1 | Upper Trailing Arm-to-Wheel Knuckle Nut | 4 | 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.
Service Procedure
- Place the vehicle in drive (D), apply and hold the brake pedal firmly, briefly push the accelerator pedal simultaneously.
- Can the clunk from the rear upper trailing arm be duplicated?
(1). Yes – proceed to Step 3.
(2). No – this article does not apply. Refer to Workshop Manual (WSM), Section 100-04 for further diagnostics.
- Replace the affected rear upper trailing arm. Refer to WSM, Section 204-02.
1 Affected Product
Vehicle
1 Associated Document
Manufacturer Communications
22-2253
28 July 2022
- WHEEL BEARING PULLER SET: This wheel bearing tool kit by Orion Motor Tech provides everything you need to let you quickly and easily remove and install your wheel bearings without hammering and front-end alignment, Please lubricate the rod to protect the threads
- UNIVERSAL COMPATIBILITY: Our versatile wheel bearing press kit offers multiple sleeves and bushings in most common sizes to work with nearly any front wheel drive automobile or light truck, whether foreign or domestic
- QUICK & EASY OPERATION: Two 8.8 grade sliding screws with precision threading firmly hold your bearings and let you smoothly pop them out without damage, leaving the steering knuckle and strut assembly untouched
- DURABLE CONSTRUCTION: Made of premium stainless steel, this wheel bearing removal tool set provides strong and dependable long-lasting service; the sliding screws are heat treated and blackened for superior strength and corrosion resistance
- COMPACT & PORTABLE: This 24 piece front wheel bearing press tool set comes with a blow-molded storage case, keeping everything organized and easy to carry from home garage to workshop
- WHEEL BEARING PULLER SET: This wheel bearing tool kit by Orion Motor Tech provides everything you need to let you quickly and easily remove and install your wheel bearings without hammering and front-end alignment, Please lubricate the rod to protect the threads
- UNIVERSAL COMPATIBILITY: Our versatile wheel bearing press kit offers multiple sleeves and bushings in most common sizes to work with nearly any front wheel drive automobile or light truck, whether foreign or domestic
- QUICK & EASY OPERATION: Two 8.8 grade sliding screws with precision threading firmly hold your bearings and let you smoothly pop them out without damage, leaving the steering knuckle and strut assembly untouched
- DURABLE CONSTRUCTION: Made of premium stainless steel, this wheel bearing removal tool set provides strong and dependable long-lasting service; the sliding screws are heat treated and blackened for superior strength and corrosion resistance
- COMPACT & PORTABLE: This 24 piece front wheel bearing press tool set comes with a blow-molded storage case, keeping everything organized and easy to carry from home garage to workshop
- UNIVERSAL SIZING: This Orion Motor Tech bushing removal tool kit includes 50 interchangeable discs to build 2,450 custom bushing driver variations so you always have the right size for the job.
- COMPLETE SET: The discs sizes range from 18mm (0.7 inches) all the way to 65mm (2.51 inches) in 1mm increments plus 74mm (2.91 inches). All discs are connected with a 12mm (0.47 inches) shaft and screw which quickly connects to a 180mm (7.08 inch) handle, making for a complete and effective wheel bearing driver set.
- EASY OPERATION: This auto tool kit includes a long handle shaft to simplify bearing race and seal replacement and help you remove or install wheel bearings quickly and professionally.
- HEAVY-DUTY DURABILITY: With ultra-strong carbon-steel construction and black anodic oxidation coating for rust-resistance, this mechanic toolset will stand up to years of heavy use.
- PROTECTIVE CARRYING CASE: Includes a heavy-duty, blow-molded case with precision-sized compartments for every piece - great for storage and transport while lengthening the life of the tool set.
- UNIVERSAL SIZING: This Orion Motor Tech bushing removal tool kit includes 50 interchangeable discs to build 2,450 custom bushing driver variations so you always have the right size for the job.
- COMPLETE SET: The discs sizes range from 18mm (0.7 inches) all the way to 65mm (2.51 inches) in 1mm increments plus 74mm (2.91 inches). All discs are connected with a 12mm (0.47 inches) shaft and screw which quickly connects to a 180mm (7.08 inch) handle, making for a complete and effective wheel bearing driver set.
- EASY OPERATION: This auto tool kit includes a long handle shaft to simplify bearing race and seal replacement and help you remove or install wheel bearings quickly and professionally.
- HEAVY-DUTY DURABILITY: With ultra-strong carbon-steel construction and black anodic oxidation coating for rust-resistance, this mechanic toolset will stand up to years of heavy use.
- PROTECTIVE CARRYING CASE: Includes a heavy-duty, blow-molded case with precision-sized compartments for every piece - great for storage and transport while lengthening the life of the tool set.
- Master Bushing Tool Set ---- deluxe custom driver kit, assist in the bearing race and seal replacement on your car, truck transmission, axle, wheel hub when installing new bearing seal back into your vehicles
- Universal Compatibility ---- our bearing and seal driver set has 50 interchangeable discs, giving you an amazing 2,450 different variations due to each of the 50 discs being interchangeable with each other. The discs go from 0.7 inches all the way to 2.55 inches in 1mm increments plus 2.9 inches. All discs are connected with a 0.47 inches shaft and screw which connects to a 7.08 inch handle, making the wheel bearing driver set complete and effect.
- Heavy Duty and Durability ---- heavy-duty carbon steel construction; black anodic oxidation for ultimate anti-rust performance, these components will stand up to heavy use and accidental drops. Perfect for off road weekend warriors, novices, and professional mechanics.
- Effective Press Kit ---- everything you need for a fast & effective removal and installation of wheel bearings on your cars or trucks; easily replaces wheel bearings with our multi-size bushing discs and heavy-duty long handle shaft
- Comes with the case ---- Each kit includes illustrated parts diagram making operation easily. It is equipped with 50pcs bushing discs, 1pc long handle shaft and necessary assemblies. Comes in a heavy duty, blow molded case for every parts, easy for storage and transport.
Last update on 2026-06-18 / Affiliate links / Images from Amazon Product Advertising API
SEOCONTENT-START
TECHNICAL SERVICE BULLETIN Clunk/Knock Noise From The Rear Of The Vehicle When Accelerating Or Braking In Forward Or Reverse – Built On Or Before 05-Oct-2021 22-2253 28 July 2022 Model: Ford 2021 Mustang Mach-E Built on or before 05-Oct-2021 Issue: Some 2021 Mustang Mach-E vehicles built on or before 05-Oct-2021 may exhibit a clunk/knock noise from the rear of the vehicle when accelerating or braking in forward or reverse. This may be due to one of the rear upper trailing arm bushing blades contacting the inner core during high load. To correct the condition, follow the Service Procedure to replace the rear upper trailing arm. Action: Follow the Service Procedure to correct the condition on vehicles that meet all of the following criteria: • 2021 Mustang Mach-E • Built on or before 05-Oct-2021 • Clunk/knock noise from the rear of the vehicle when accelerating or braking in forward or reverse Parts Service Part Number Quantity Description Unit of Issue Piece Quantity LJ9Z-5500-C 1 Rear Upper Trailing Arm (Right) 1 1 LJ9Z-5500-D 1 Rear Upper Trailing Arm (Left) 1 1 W7218230-S439 1 Upper Trailing Arm-to-Frame Bolt 4 2 W500564-S439 1 Upper Trailing Arm-to-Wheel Knuckle Bolt 4 1 W520215-S440 1 Upper Trailing Arm-to-Wheel Knuckle Nut 4 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. 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 Mach-E, Diagnose And Replace One Rear Upper Trailing Arm (Do Not Use With Any Other Labor Operations) 222253A 0.8Hrs. 2021 Mach-E, Diagnose And Replace Both Rear Upper Trailing Arms (Do Not Use With Any Other Labor Operations) 222253B 1.0Hrs. Repair/Claim Coding Causal Part: 5500 Condition Code: 42 Service Procedure 1. Place the vehicle in drive (D), apply and hold the brake pedal firmly, briefly push the accelerator pedal simultaneously. 2. Can the clunk from the rear upper trailing arm be duplicated? (1). Yes – proceed to Step 3. (2). No – this article does not apply. Refer to Workshop Manual (WSM), Section 100-04 for further diagnostics. 3. Replace the affected rear upper trailing arm. Refer to WSM, Section 204-02.
**************************************************************************************************************
SEOCONTENT-END
This product presentation was made with AAWP plugin.