Water Pump Impeller Kit – Fits Mercury/MerCruiser 4.3L-8.2L (Replaces 47-59362T1)
Water Pump Impeller Kit – Fits Mercury/MerCruiser 4.3L-8.2L (Replaces 47-59362T1) 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
Water Pump Impeller Kit – Fits Mercury/MerCruiser 4.3L-8.2L (Replac...
Product Details
This Water Pump Impeller Kit is a direct-fit replacement for a wide range of Mercury/MerCruiser V6 and V8 engines (4.3L to 8.2L) manufactured between 1998 and 2003. It is engineered specifically for models equipped with a one-piece engine-mounted sea water pump housing and a serpentine belt system, ensuring reliable raw water circulation to maintain optimal engine temperatures.
This part provides a direct interchange for OEM numbers 47-59362T1, 47-59362T6, and 47-59362Q01, as well as aftermarket references from Sierra, Mallory, GLM, Jabsco, and others.
- Installs in the engine-mounted sea water pump.
- Engineered for systems with a one-piece pump housing and serpentine belt.
- Package includes one high-quality neoprene impeller with a brass core.
Part Number Matrix
Use this matrix to confirm equivalent references across OEM and aftermarket.
| Brand | Part Number |
|---|---|
| Mercury/MerCruiser | 47-59362T1 |
| Mercury/MerCruiser | 47-59362T6 |
| Mercury/MerCruiser | 47-59362Q01 |
| Sierra | 18-3087 |
| Mallory | 9-45375 |
| Mallory | 9-45375-10 |
| GLM | 89740 |
| Jabsco | 17954-0001-P |
| Pro Marine | 64362 |
| Redline | RL3087 |
| HeuroFosh | 47-59362T1 |
Engine & Model Compatibility
Confirm your engine model/year in the table below.
For MerCruiser sterndrive and inboard engines from 1998–2003 using a one-piece water pump housing.
For Mercury Racing high-performance engines, verify your serial number against the listed ranges.
| Brand | Model | Stroke | Years | OEM Part No. | Notes |
|---|---|---|---|---|---|
| MerCruiser | 4.3L (GEN+) 2BBL GM 262 V-6 | 4-Stroke | 1998–2001 | 47-59362T1 | 0L010044 THRU 0M614999 |
| MerCruiser | 4.3L CARB ALPHA/BRAVO | 4-Stroke | Up to 2003 | 47-59362T1 | Through 1A063240 & Up |
| MerCruiser | 4.3L EFI (GEN+) TBI GM 262 V-6 | 4-Stroke | 1998–2001 | 47-59362T1 | 0L012009 THRU 0M322780 |
| MerCruiser | 4.3LH (GEN+) 4BBL GM 262 V-6 | 4-Stroke | 1998 | 47-59362T1 | 0L010044 THRU 0M614999 |
| MerCruiser | 5.0L 2BBL GM 305 V-8 | 4-Stroke | 1998–2001 | 47-59362T1 | 0L015751 THRU 0M599999 |
| MerCruiser | 5.0L CARB ALPHA/BRAVO | 4-Stroke | Up to 2003 | 47-59362T1 | Through 0W650000 & Up |
| MerCruiser | 5.0L EFI GM 305 V-8 | 4-Stroke | 1999–2001 | 47-59362T1 | 0L331631 THRU 0M299999 |
| MerCruiser | 5.7L 2BBL GM 350 V-8 | 4-Stroke | 1998–2001 | 47-59362T1 | 0L010037 THRU 0M599999 |
| MerCruiser | 5.7L CARB ALPHA/BRAVO | 4-Stroke | Up to 2003 | 47-59362T1 | Through 0W650000 & Up |
| MerCruiser | 5.7L CARB MIE | 4-Stroke | 1998–2003 | 47-59362T1 | 0L002003 THRU 0W690000 & Up |
| MerCruiser | 5.7L CARB SKI | 4-Stroke | Up to 2003 | 47-59362T1 | Through 0W694844 & Up |
| MerCruiser | 5.7L COMPETITION SKI (GEN+) GM 350 V-8 | 4-Stroke | 1998 | 47-59362T1 | 0L002005 THRU 0M316999 |
| MerCruiser | 5.7L EFI GM 350 V-8 | 4-Stroke | 1999–2001 | 47-59362T1 | 0L325977 THRU 0M299999 |
| MerCruiser | 350 MAG MPI ALPHA/BRAVO | 4-Stroke | Up to 2001 | 47-59362T1 | 0L331599 THRU 0M299999 |
| MerCruiser | 350 MAG MPI HORIZON MIE | 4-Stroke | Up to 2001 | 47-59362T1 | 0L302200 THRU 0M299999 |
| MerCruiser | 350 MAG MPI MIE | 4-Stroke | Up to 2001 | 47-59362T1 | 0L302200 THRU 0M299999 |
| MerCruiser | 454 MAG MPI BRAVO (GEN VI) GM 454 V-8 | 4-Stroke | 1998 | 47-59362T1 | 0L010029 THRU 0L058399 |
| MerCruiser | 454 MAG MPI BRAVO (GEN VI) GM 454 V-8 | 4-Stroke | Up to 2001 | 47-59362T1 | 0L085400 THRU 0M024999 |
| MerCruiser | 454 MAG MPI HORIZON (GEN VI) GM 454 V-8 | 4-Stroke | Up to 2000 | 47-59362T1 | 0L086050 THRU 0L674000 |
| MerCruiser | 500 (GEN+) GM 502 V-8 | 4-Stroke | 1999 | 47-59362T1 | 0L414639 THRU 0L601036 |
| MerCruiser | 500 Bulldog | 4-Stroke | 1999–2001 | 47-59362T1 | 0L414620 THRU 0M050281 |
| MerCruiser | 500 EFI | 4-Stroke | 1998–2001 | 47-59362T1 | Multiple serial ranges |
| MerCruiser | 502 MAG MPI BRAVO (GEN VI) GM 502 V-8 | 4-Stroke | 1998 | 47-59362T1 | 0L017000 THRU 0L085432 |
| MerCruiser | 502 MAG MPI BRAVO (GEN VI) GM 502 V-8 | 4-Stroke | Up to 2001 | 47-59362T1 | 0L085433 THRU 0M024999 |
| MerCruiser | 7.4L BRAVO (MPI)(GEN VI) GM 454 V-8 | 4-Stroke | 1998–2000 | 47-59362T1 | 0L010003 THRU 0M024330 |
| MerCruiser | 7.4L MPI MIE (L29) GEN VI GM 454 V-8 | 4-Stroke | 1998–2000 | 47-59362T1 | 0L002006 THRU 0L674613 |
| MerCruiser | 8.2L MIE MPI (GEN VI) GM 502 V-8 | 4-Stroke | 1998–2000 | 47-59362T1 | 0L086013 THRU 0L674200 |
| MerCruiser | BLACK SCORPION 350 MAG SKI (GEN+) V-8 | 4-Stroke | 1997–2001 | 47-59362T1 | 0K040001 THRU 0M391599 |
| MerCruiser | BLACK SCORPION MX 6.2L SKI (GEN+) V-8 | 4-Stroke | 2001–2002 | 47-59362T1 | 0L670015 THRU 0M391599 |
| MerCruiser | MX 6.2L MPI BRAVO | 4-Stroke | Up to 2001 | 47-59362T1 | 0L680003 THRU 0M299999 |
| MerCruiser | MX 6.2L MPI MIE | 4-Stroke | Up to 2001 | 47-59362T1 | 0L302200 THRU 0M299999 |
| Mercury Racing | 525 EFI | 4-Stroke | Up to 2013 | 47-59362T1 | 0M900146 THRU 0M962885 & Up |
| Mercury Racing | 565 EFI | 4-Stroke | 2013 & Up | 47-59362T1 | 0M967821 & Up |
| Mercury Racing | 575 SCi | 4-Stroke | 1999–2001 | 47-59362T1 | Multiple serial ranges |
| Mercury Racing | 600 SCi | 4-Stroke | Up to 2013 | 47-59362T1 | 0M952908 THRU 0M962885 & Up |
| Mercury Racing | 662 SCi | 4-Stroke | Up to 2013 | 47-59362T1 | 0M956580 THRU 0M962885 & Up |
| Mercury Racing | 700 SCi | 4-Stroke | Up to 2013 | 47-59362T1 | 0M954560 THRU 0M962885 & Up |
| Mercury Racing | 850 SCi | 4-Stroke | Up to 2013 | 47-59362T1 | Multiple serial ranges |
| Mercury Racing | 900 SC | 4-Stroke | 1997–1999 | 47-59362T1 | 0K000858 THRU 0L602069 |
| Mercury Racing | 900 SC Dry Sump | 4-Stroke | 2000 | 47-59362T1 | 0L306805 & Up |
| Mercury Racing | 1025SCi | 4-Stroke | 2013 & Up | 47-59362T1 | 0M962886 & Up |
| Mercury Racing | 1075 SCi | 4-Stroke | Up to 2013 | 47-59362T1 | Multiple serial ranges |
| Mercury Racing | 1100 QC4V | 4-Stroke | 2013 & Up | 47-59362T1 | 0M965965 & Up |
| Mercury Racing | 1200 SCi | 4-Stroke | Up to 2013 | 47-59362T1 | 0M956534 THRU 0M962885 & Up |
| Mercury Racing | 1350 QC4V | 4-Stroke | 2013 & Up | 47-59362T1 | 0M965309 & Up |
| Mercury Racing | 1650 QC4V | 4-Stroke | 2013 & Up | 47-59362T1 | 0M965309 & Up |
| Mercury Racing | Scorpion 377 Sterndrive | 4-Stroke | Up to 2001 | 47-59362T1 | 0L416146 THRU 0M907201 |
Technical Specs
- Product Type
- Water Pump Impeller
- Installation
- Engine-mounted sea water pump
- Housing Material
- Neoprene with brass core
- Housing Color
- Black
- Dimensions
- 70 mm × 70 mm × 51 mm (2.75 in × 2.75 in × 2.0 in)
- Weight
- 0.1 kg (0.23 lbs)
- Other Technical Attributes
- For use with one-piece pump housing and serpentine belt
What’s in the Box
- 1 x Impeller (47-59362T1)
Installation Notes
- Disconnect the boat's battery and close the water intake seacock.
- Locate the sea water pump on the engine and place a rag underneath to catch any spilled water.
- Remove the serpentine belt from the pump pulley.
- Unscrew the bolts holding the pump housing cover. Note their positions if lengths differ.
- Carefully remove the cover. A small amount of water may drain out.
- Grip the old impeller with pliers and pull it straight out of the housing. Note the bend direction of the vanes.
- Lightly lubricate the new impeller and the inside of the housing with marine grease or soap.
- Insert the new impeller with a rotating motion, ensuring the vanes bend in the same direction as the original.
- Reinstall the housing cover, ensuring any gaskets are properly seated, and tighten the screws evenly.
- Reattach the serpentine belt, confirming correct tension.
- Open the seacock, reconnect the battery, start the engine, and immediately check for leaks and proper water flow from the exhaust.
Troubleshooting & FAQ
How can I tell if my water pump impeller is failing?
Common signs of a failing impeller include the engine running hotter than normal, a weak or non-existent water stream from the exhaust/tell-tale outlet, and visible cracks, stiffness, or missing vanes on the impeller itself during a physical inspection.
How often should this impeller be replaced?
For preventative maintenance, it's recommended to inspect the impeller annually and replace it every 1–2 years or every 100–200 hours of operation. Replacement frequency depends on usage conditions, especially in saltwater or silt-heavy environments.
Will this fit an engine with a two-piece pump housing?
No. This impeller is specifically designed for MerCruiser engines equipped with a one-piece sea water pump housing and a serpentine belt. Please verify your pump configuration before ordering to ensure compatibility.
The impeller vanes seem bent. Is it defective?
No, this is normal. Impeller vanes are flexible and are designed to bend inside the pump housing to create pressure and move water. It is critical to install the new impeller with the vanes bent in the same direction as the old one you removed to match your engine's rotation.
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.
Payment & Security
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