Water Pump Impeller Kit with Gasket for Late-Model MerCruiser Bravo & High-Performance Engines – Replaces 47-862232A2
Water Pump Impeller Kit with Gasket for Late-Model MerCruiser Bravo & High-Performance Engines – Replaces 47-862232A2 is backordered and will ship as soon as it is back in stock.
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Water Pump Impeller Kit with Gasket for Late-Model MerCruiser Bravo...
Water Pump Impeller Kit with Gasket for Late-Model MerCruiser Bravo & High-Performance Engines – Replaces 47-862232A2 is backordered and will ship as soon as it is back in stock.
Product Details
This is a replacement water pump impeller kit with gasket for selected late-model MerCruiser Bravo and high-performance raw-water cooling applications. It is intended for use with the specified pump and engine configuration; confirm the complete engine, drive, and serial-number requirements before ordering.
The kit replaces Mercury OEM part number 47-862232A2 and is listed for late-model Bravo and high-performance applications, including 350 MAG, 4.3L, 496 MAG, 5.0L, 8.1S, and MX 6.2L engines in the applicable configurations.
- Replacement raw-water pump impeller kit.
- Includes one impeller and one gasket.
- Designed for applicable late-model Bravo and high-performance cooling systems.
- Verify the original part number and engine/drive application before installation.
Part Number Matrix
The following references identify the impeller kit and its documented OEM replacement number.
| Reference Type | Part Number | Application |
|---|---|---|
| Aftermarket reference | 18-3016-1 | Impeller kit with gasket |
| Mercury OEM replacement reference | 47-862232A2 | Replaced by this kit |
| Mercury OEM replacement reference | 8M0104229 | Additional replacement reference listed for the kit |
Engine & Model Compatibility
This kit is documented for late-model MerCruiser Bravo and high-performance applications. The engine names below are application references, not a guarantee that every year, drive, pump housing, or serial-number range uses the same impeller. Match the OEM number and inspect the existing pump before purchase.
| Brand | Application | Engine / Model Reference | Stroke | Serial / Year Condition | Replacement Reference | Notes |
|---|---|---|---|---|---|---|
| MerCruiser | Late-model Bravo and high-performance | 350 MAG | 4-Stroke gasoline | Not specified; verify by OEM number and configuration | 47-862232A2 | Applicable configurations only |
| MerCruiser | Late-model Bravo and high-performance | 4.3L | 4-Stroke gasoline | Not specified; verify by OEM number and configuration | 47-862232A2 | Applicable configurations only |
| MerCruiser | Late-model Bravo and high-performance | 496 MAG | 4-Stroke gasoline | Not specified; verify by OEM number and configuration | 47-862232A2 | Applicable configurations only |
| MerCruiser | Late-model Bravo and high-performance | 5.0L | 4-Stroke gasoline | Not specified; verify by OEM number and configuration | 47-862232A2 | Applicable configurations only |
| MerCruiser | Late-model Bravo and high-performance | 8.1S | 4-Stroke gasoline | Not specified; verify by OEM number and configuration | 47-862232A2 | Applicable configurations only |
| MerCruiser | Late-model Bravo and high-performance | MX 6.2L | 4-Stroke gasoline | Not specified; verify by OEM number and configuration | 47-862232A2 | Applicable configurations only |
Technical Specs
- Product Type
- Raw-water pump impeller kit
- Kit Contents
- One impeller and one gasket
- Installation
- Direct replacement for the applicable pump assembly
- Cooling System
- Raw-water cooling system
- Fuel / Engine Type
- Gasoline marine engines
- Documented Application
- Late-model MerCruiser Bravo and high-performance applications
- OEM Replacement Reference
- 47-862232A2; also listed against 8M0104229
What’s in the Box
- 1 x Water pump impeller
- 1 x Pump gasket
Installation Notes
- Disconnect the boat's battery and close the raw-water intake seacock before beginning work.
- Confirm that the replacement references on the existing component match the applicable pump and engine configuration.
- Locate the raw-water pump and place a container beneath it to catch water or residual coolant.
- Remove the pump cover and retain the fasteners in a clean location.
- Remove the old impeller with an appropriate impeller puller or carefully with pliers. Avoid damaging the pump housing, shaft, or cover.
- Clean the housing and cover surfaces. Replace damaged, scored, corroded, or excessively worn components before fitting the new impeller.
- Lubricate the impeller with a suitable water-based lubricant or clean soapy water. Do not install it dry.
- Install the new impeller with the blades oriented for the pump's direction of rotation. Use the included gasket between the appropriate mating surfaces.
- Reinstall the cover and tighten the fasteners evenly according to the engine or pump manufacturer's procedure.
- Open the seacock, reconnect the battery, start the engine, and immediately check for water flow and leaks.
Troubleshooting & FAQ
How do I confirm that this kit fits my MerCruiser engine?
Compare your original impeller or pump documentation with OEM reference 47-862232A2 or 8M0104229. This kit is documented for late-model Bravo and high-performance applications, including specified 350 MAG, 4.3L, 496 MAG, 5.0L, 8.1S, and MX 6.2L configurations. Engine displacement alone is not sufficient to confirm fitment.
What is included with this product?
This is an impeller kit that includes one water pump impeller and one gasket. It is not an impeller-only package.
What are the signs of a failing water pump impeller?
Common symptoms include engine overheating, reduced cooling-water flow, abnormal pump noise, or visible cracks, stiffness, missing sections, or deformation of the impeller blades.
How often should I replace the impeller?
Inspect the impeller as part of regular seasonal maintenance and replace it when it shows wear or damage, or according to the maintenance schedule for your specific engine and pump. Replacement intervals can vary with operating hours, storage conditions, saltwater exposure, and debris.
Which way should the impeller blades face?
The blades must flex in the direction required by the pump's rotation. Note the orientation of the old impeller before removal and confirm the correct direction from the engine or pump service information.
Can I reuse my old pump housing?
Reuse the housing only if its interior surface is smooth and free from scoring, grooves, corrosion, or other damage. A damaged housing can rapidly wear or destroy a replacement impeller.
Is the gasket included?
Yes. This listing is for an impeller kit with one gasket.
Is this an OEM component?
This listing is for an aftermarket replacement kit. The documented OEM replacement references are 47-862232A2 and 8M0104229.
Can I use the engine model alone to order this part?
No. MerCruiser engines can use different cooling-system components depending on the drive, pump design, model configuration, and serial range. Confirm the original part number and the complete application before ordering.
Safety & Important Info
- Close the raw-water intake and disconnect the battery before servicing the pump.
- Never operate the engine without an adequate water supply to the cooling system.
- Verify the OEM replacement number, pump configuration, and engine/drive application before purchase.
- Stop operation immediately if the engine overheats or if water leaks are observed after installation.
- Professional installation is recommended when the correct application or installation procedure is uncertain.
About Sea Sierra
- Marine Replacement Parts — We supply replacement components for boat maintenance and repair applications.
- Application-Focused Listings — Product references and fitment guidance are provided to help customers compare their original parts.
- Support for Installation Planning — Review the application details and confirm the original part number before ordering.
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