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Product Details
Is the trackpad on your 16" MacBook Pro not clicking, not responding or not working at all? The trackpad flex cable joins the Force Touch trackpad to the logic board, and a worn or damaged cable stops it working. A new trackpad cable is a cheap part to try before a whole trackpad.
This one cable fits the 16-inch MacBook Pro A2991 (M3 Pro and M3 Max, Late 2023), A3403 (M4 Pro, 2024) and A3186 (M4 Max, 2024). For the early 2023 M2 Pro model, get the A2780 trackpad cable.
Part Includes:
- 1x Trackpad flex cable
- 12 Month Warranty
Please Note
Does NOT fit the 2021 16" A2485, the 2023 A2780 or any 14" MacBook Pro. Not confirmed for the 2026 M5 Pro and M5 Max 16" (A3428, A3429). Check the A-number on the bottom case.
Please Note
This is the cable only. The trackpad and its screws are not included.
Please Note
The bottom case comes off and the battery is unplugged. The trackpad comes out to reach the far end of the cable.
Specifications
- Part Type: Trackpad flex cable
- Printed Part Number: 821-04493 (821-04493-A, 821-04493-02)
- Connects: Force Touch trackpad to logic board
- Condition: Brand new or A-grade used genuine Apple part
- Warranty: 12 Months
Compatible Model Numbers
MacBook Pro 16" 2024 (M4 Pro / M4 Max)Model Number (A Number)
- A3403
- A3186
EMC Number
- EMC 8895
- EMC 8624
MacBook Pro 16" 2024 (M4 Pro / M4 Max) How do I find my Model number?
Model Identifier
- Mac16,7
- Mac16,5
Device Number (M Number)
- MX2T3
- MX2U3
- MX2V3
- MX2W3
- MX2X3
- MX2Y3
- MX303
- MX313
MacBook Pro 16" Late 2023 (M3 Pro / M3 Max)Model Number (A Number)
- A2991
EMC Number
- EMC 8408
MacBook Pro 16" Late 2023 (M3 Pro / M3 Max) How do I find my Model number?
Model Identifier
- Mac15,7
- Mac15,9
- Mac15,11
Device Number (M Number)
- MRW13
- MRW23
- MRW33
- MRW43
- MRW63
- MRW73
- MUW63
- MUW73
Installation Help
Check out the video above or the step by step guide below for assistance with this repair
Follow the guide for your year below. The cable unplugs from the logic board under a small bracket and from the trackpad once the trackpad is out.
iFixit MacBook Pro 16" Late 2023 Trackpad Replacement Guide
iFixit MacBook Pro 16" 2024 (M4) Trackpad Replacement Guide
Here are some tools you may need to help you complete the repair.
- P5 Metal Pentalobe 1.2mm Screwdriver Tool
- T3 Metal Torx Screwdriver Tool
- T5 Torx Screwdriver | MacBook Logic Board and Battery Repairs
- Or get the P5, T3 and T5 together in our 10 Piece MacBook Repair Toolkit
- Large Blue Suction Cup Opening Tool
- iGadget Plastic Triangle Opening Picks (set of 5)
- Nylon Antistatic Spudger Pry Tool
- ESD Anti-Static Stainless Steel Curved Tweezers | ESD 15
- iGadget Universal Magnetic Work Project Mat with Marker (30cm x 25cm)
Here are some helpful tips to assist you in completing a safe repair on your device. If you are unsure of something or have any questions, please feel free to contact us either by phone (0508 IGADGET) or by email
- Turn off Auto Boot first so the MacBook doesn't switch on when you open it: on macOS Sequoia or later run
sudo nvram BootPreference=%00in Terminal, andsudo nvram -d BootPreferenceto undo it. On older macOS, keep the lid closed while it is plugged in - Always power down your device prior to working on it
- Always unplug the battery before you remove any other parts, and keep metal tools away from the battery. Never bend, crush or puncture it
- The bottom case screws are P5. Track your screws on a magnetic work mat or tape them to a drawing of your laptop
- Lift the front edge of the bottom case with a suction cup and run an opening pick round the edge to release the clips
- Some 2023 and later screws are Torx Plus (3IP and 5IP). A T5 can strip them, so go gently or use a Torx Plus bit
- The trackpad cable bracket uses small T3 (3IP) screws
- Lift the cable connectors with a spudger or tweezers, never the sockets
What’s In The Box
- 1x MacBook Pro 16" Trackpad Flex Cable (A2991 / A3403 / A3186)

In Stock