Shift Plate Kit – Fits MerCruiser Sterndrive Engines (Replaces 864363A1)
Shift Plate Kit – Fits MerCruiser Sterndrive Engines (Replaces 864363A1) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Shift Plate Kit – Fits MerCruiser Sterndrive Engines (Replaces 8643...
Product Details
This aftermarket Shift Plate Kit – Fits MerCruiser Sterndrive Engines (Replaces 864363A1) is designed for a broad range of MerCruiser stern drives, including models like the 120/140, 165, 470, 888, and 260 series. It serves as an essential replacement for discontinued shift interrupt switches, ensuring reliable and smooth gear engagement for various engine models from different production years.
It provides a direct interchange for several original equipment part numbers, including Mercury-Mercruiser 864363A1, 39670A28, 39670A38, 87-19752A3, and 87-19752A6.
- Installs on either the engine or transom, depending on the model.
- Designed for gasoline-powered sterndrive engines.
- Includes all necessary cables, pins, and springs for a complete installation.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury-Mercruiser | 864363A1 |
| Mercury-Mercruiser | 39670A28 |
| Mercury-Mercruiser | 39670A38 |
| Mercury-Mercruiser | 87-19752A3 |
| Mercury-Mercruiser | 87-19752A6 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For MerCruiser Engines: Please be aware that certain models may require using an alternate mounting location for this kit to be installed correctly.
| Brand | Model | Rated HP | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| MerCruiser | 120/140 | 120/140 | Drive 2062141–2791956 | 864363A1 | |
| MerCruiser | 120/140 | 120/140 | Drive 2062141–3780849 | 864363A1 | |
| MerCruiser | 120/140 | 120/140 | Drive 3780850–6225576 | 864363A1 | |
| MerCruiser | 120/140 | 120/140 | S/N 6229718–0C856558 | 864363A1 | Alternate mounting location required |
| MerCruiser | 160 | 160 | Drive 2065190–2763441 | 864363A1 | |
| MerCruiser | 165 | 165 | Drive 2763442–3780849 | 864363A1 | |
| MerCruiser | 470 | Drive 4208730–6225576 | 864363A1 | ||
| MerCruiser | 485 | Drive 4893835 & Up | 864363A1 | ||
| MerCruiser | 225-S (Ford) | 225 | 3385721–4166999 | 864363A1 | |
| MerCruiser | 888 (Ford) | 3108723–3777489 | 864363A1 | ||
| MerCruiser | 888 (Ford) | 3777490–4887829 | 864363A1 | ||
| MerCruiser | 233 (Ford) | 233 | 4173000–4902304 | 864363A1 | |
| MerCruiser | 228 | 228 | 4765100–6218461 | 864363A1 | |
| MerCruiser | 898 | 4762210–6218461 | 864363A1 | ||
| MerCruiser | 260 | 260 | 4908850–6218461 | 864363A1 | |
| MerCruiser | 3.0L/LX | 864363A1 | Alternate mounting location required |
Technical Specs
- Product Type
- Shift Plate Kit
- Installation
- Engine or Transom Mount
- Fuel Type
- Gasoline
- Connection
- Cable
- Dimensions
- Height: 35.0; Width: 33.0; Length: 33.0;
- Weight
- 2.50 lb (1.13 kg)
- Fitting Type
- Cable
- Other Technical Attributes
- Replacement for discontinued shift interrupt switches
What’s in the Box
- 1 x Cable Assembly (84-11149A1)
- 1 x Cable Assembly (84-11149A3)
- 1 x Spring (24-98880)
- 1 x Washer (12-56720)
- 3 x Washer (12-35462)
- 1 x Cotter pin (18-32857-1)
- 1 x Clevis pin (17-814001)
- 3 x Cotter pin (18-21071-1)
- 1 x Spring guide (813995A1)
Installation Notes
- Ensure the engine is off and disconnect the battery for safety.
- Carefully identify and remove the old shift plate assembly and its connected cables.
- Mount the new shift plate kit. Note that some engine models specified in the compatibility list require using an alternate mounting location.
- Attach the new shift cables to the plate, drive mechanism, and shift controller.
- Precisely adjust the cable tension, travel, and switch activation timing according to your official MerCruiser service manual. This step is critical for proper operation.
- Reconnect the battery and test the shifting function thoroughly in a safe environment (e.g., on the water or using a water flush kit) before regular use.
Troubleshooting & FAQ
How do I know if this shift plate kit will fit my engine?
This kit fits a wide range of MerCruiser sterndrives. To ensure a match, please compare your engine model and drive serial number against the "Engine & Model Compatibility" table. Pay special attention to notes, as some models (like the 120/140 and 3.0L/LX) may require an alternate mounting location.
What are the signs of a failing shift plate or interrupt switch?
Common symptoms include difficulty shifting between gears, grinding noises during shifting, the engine stalling when put into gear, or the drive failing to hold a gear under load. These issues often point to a worn or misadjusted shift mechanism.
Is special adjustment required after installation?
Yes, proper adjustment is critical. The shift interrupt switch, which is part of this assembly, must be timed perfectly to momentarily cut engine ignition when shifting out of gear. This prevents damage from gear clash. Always follow the detailed adjustment procedures found in your engine’s official service manual.
Why does this kit replace the shift interrupt switch?
This kit is an updated assembly that replaces older-style shift plates and, in many cases, discontinued shift interrupt switches that are no longer available as individual parts. Installing the complete kit ensures all components work together correctly.
OEM vs. Aftermarket?
This listing is an aftermarket replacement (not OEM). Built to OEM-level specifications with comparable materials. Manufactured in an ISO 9002 facility, batch-inspected for consistency.
Shipping speed & cost
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
Warranty & returns
Covered by a 1-year warranty against manufacturing defects under normal use. If issues arise, contact support with your order details. Returns are accepted within our standard window (unused & in original condition). See our policy page or reach out for instructions.
Safety & Important Info
- Verify images/specifications vs your original part. If anything differs—even if your model appears compatible—do not purchase.
- This is an aftermarket replacement, not an OEM component.
- Professional installation is recommended for safety and performance.
About Sea Sierra
- Pro-Grade Standards — We supply marine parts engineered to OEM-level tolerances and tested for real-world conditions.
- Fast Global Fulfillment — Free standard delivery to most regions in 5–15 days.
- Manufacturer-Direct Value — Fair pricing without compromising on materials or QC.
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