Shift Kit – Fits Mercury/Mercruiser 89594A1 (Replaces OEM 89594A1)
Shift Kit – Fits Mercury/Mercruiser 89594A1 (Replaces OEM 89594A1) is backordered and will ship as soon as it is back in stock.
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Worry-free returns
Worry-free returns
You may return most new, unopened items within 7 days of delivery for a full refund. We'll also pay the return shipping costs if the return is a result of our error (you received an incorrect or defective item, etc.).
You should expect to receive your refund within four weeks of giving your package to the return shipper, however, in many cases you will receive a refund more quickly. This time period includes the transit time for us to receive your return from the shipper (5 to 10 business days), the time it takes us to process your return once we receive it (3 to 5 business days), and the time it takes your bank to process our refund request (5 to 10 business days).
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Delivery and Shipping
Delivery and Shipping
Free standard shipping on all orders under 1 KG
Shift Kit – Fits Mercury/Mercruiser 89594A1 (Replaces OEM 89594A1)
Product Details
This Shift Kit – Fits Mercury/Mercruiser 89594A1 is an essential replacement component designed for various Mercury and Mariner 115–200 HP V6 2.5L outboard engines. It ensures smooth and reliable gear shifting by replacing a worn or damaged original shift cam follower.
It serves as a direct replacement for Mercury/Mercruiser OEM part number 89594A1.
- Installs in the lower unit gearcase.
- Critical for ensuring smooth and precise shifting of gears.
- Compatible with both standard and counter-rotation applications.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/Mercruiser | 89594A1 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
This part is designed for select Mercury and Mariner V6 outboards.
| Brand | Model | Rated HP | OEM Part No. | Notes |
|---|---|---|---|---|
| Mercury/Mariner | V6 | 115-200 | 89594A1 | Outboard engines |
| Mercury/Mariner | V-150 (MAG/EFI) | 150 | 89594A1 | |
| Mercury/Mariner | V-150XRI (EFI) | 150 | 89594A1 | |
| Mercury/Mariner | V-175 (MAG/EFI) | 175 | 89594A1 | |
| Mercury/Mariner | V-175 (EFI) | 175 | 89594A1 | |
| Mercury/Mariner | V-200 (MAG/EFI) | 200 | 89594A1 | |
| Mercury/Mariner | 150/175/200 (EFI) | 150-200 | 89594A1 | For both standard rotation and counter rotation |
| Mercury/Mariner | 2.5L | 115-200 | 89594A1 | V6 outboard |
Technical Specs
- Product Type
- Shift Cam Follower Kit
- Installation
- Lower Unit Gearcase
- Dimensions
- 14.0" H x 10.0" W x 2.2" L
- Other Technical Attributes
- Ensures smooth and precise shifting of gears in marine vessel
What’s in the Box
- 1 x Shift Cam Follower Kit (Replaces 89594A1)
Installation Notes
- Before you begin, disconnect the battery and consult your engine’s official service manual.
- Drain the gearcase oil into a suitable container.
- Carefully detach the lower unit (gearcase) from the outboard’s upper housing.
- Locate and remove the old shift cam follower components. Clean the area of any debris or old lubricant.
- Install the new shift cam follower kit, ensuring all parts are correctly seated.
- Reassemble and attach the lower unit, making sure all connections are secure and torqued to manufacturer specifications.
- Refill the gearcase with the recommended marine gear lubricant to the correct level.
- Reconnect the battery and test the shifting mechanism in a controlled environment before returning to the water.
Troubleshooting & FAQ
How do I know if this shift kit will fit my engine?
This kit is specifically designed for Mercury/Mariner V6 2.5L outboard engines rated between 115-200 HP. To confirm compatibility, please cross-reference your model and OEM part number (89594A1) with the details in the Engine & Model Compatibility table.
What are the symptoms of a faulty shift cam follower?
Common signs of failure include difficulty shifting into forward or reverse, grinding noises during gear changes, the propeller failing to engage, or the engine slipping out of gear unexpectedly during operation.
Is this kit for 2-stroke or 4-stroke engines?
This part fits the specified Mercury/Mariner V6 2.5L engine platform. While the stroke type is not explicitly listed for all models, this engine family includes both 2-stroke and potentially other models. Always verify fitment against your specific engine model and part number.
Do I need special tools for this installation?
Standard marine mechanic tools are typically required for lower unit service. We strongly recommend using an official service manual for your engine model, which will list any specialized tools and provide detailed, step-by-step instructions.
Why choose an aftermarket part over an OEM one?
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.
What are the shipping speed and cost?
We ship worldwide quickly—typical transit 5–15 days. Standard shipping is free; expedited options appear at checkout where available.
What is the warranty and return policy?
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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