Water Pump Impeller Kit with Gasket for Mercury MerCruiser Bravo Engines – Replaces 47-862232A2, 8M0104229
Water Pump Impeller Kit with Gasket for Mercury MerCruiser Bravo Engines – Replaces 47-862232A2, 8M0104229 is backordered and will ship as soon as it is back in stock.
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Water Pump Impeller Kit with Gasket for Mercury MerCruiser Bravo En...
Water Pump Impeller Kit with Gasket for Mercury MerCruiser Bravo Engines – Replaces 47-862232A2, 8M0104229 is backordered and will ship as soon as it is back in stock.
Product Details
This aftermarket water pump impeller kit with gasket is designed for selected Mercury MerCruiser Bravo and high-performance marine engines using the applicable brass seawater pump. It replaces Mercury MerCruiser part numbers 47-862232A2 and 8M0104229. The kit is intended for late-model applications including 4.3L, 5.0L, 5.7L, 6.2L, and 8.1L/496-series configurations listed below, subject to the pump design and fastener configuration.
Company fitment information identifies compatible applications among MerCruiser V6 and V8 engines from 2000 and newer with the brass seawater pump, including Bravo engines and certain closed-cooling Alpha models and inboards. Always compare the pump housing, mounting arrangement, and existing part number before ordering.
- Replacement impeller kit for the applicable MerCruiser brass seawater pump.
- Includes one impeller and one gasket for the pump service.
- Cross-references Mercury MerCruiser 47-862232A2 and 8M0104229.
- Not suitable for pumps using five 5/16-inch bolts on each side of the pump configuration.
Part Number Matrix
These are manufacturer and aftermarket reference numbers associated with this impeller kit. They are provided for identification and cross-reference purposes only; confirm the complete application before purchase.
| Brand | Part Number |
|---|---|
| Mercury MerCruiser | 47-862232A2 |
| Mercury MerCruiser | 8M0104229 |
| GLM Marine | 89700 |
| CEF | 500159G |
| Sierra | 18-3016-1 |
| Mallory Marine | 9-45310 |
Engine & Model Compatibility
The following application groups are identified for this impeller kit. Fitment depends on the engine's seawater-pump design. Model year, serial number, pump housing, and bolt arrangement should be checked before installation.
| Brand | Application | Displacement | Configuration | Application Notes |
|---|---|---|---|---|
| Mercury MerCruiser | V6 Bravo | 4.3L / 262 cu. in. | Brass seawater pump | 2000 and newer applications identified by the company fitment data |
| Mercury MerCruiser | V8 Bravo | 5.0L / 305 cu. in. | Brass seawater pump | Confirm the pump design and mounting arrangement |
| Mercury MerCruiser | V8 Bravo | 5.7L / 350 cu. in. | Brass seawater pump | Includes applicable 350 MAG and related Bravo configurations |
| Mercury MerCruiser | MX 6.2L and related high-performance applications | 6.2L | Late-model Bravo/high-performance pump | Verify the original impeller and pump housing before ordering |
| Mercury MerCruiser | 496 MAG / 8.1L Bravo | 8.1L / 496 cu. in. | Brass seawater pump | Applicable late-model Bravo and high-performance configurations |
| Mercury MerCruiser | Selected closed-cooling Alpha models and inboards | See applicable engine model | Brass seawater pump | Confirm pump construction and part-number match; not every Alpha or inboard application is covered |
Technical Specs
- Product Type
- Water pump impeller kit with gasket
- Application
- Applicable Mercury MerCruiser Bravo and high-performance brass seawater pumps
- Replacement Part Numbers
- 47-862232A2 and 8M0104229
- Kit Contents
- One impeller and one pump gasket
- Brand Status
- Aftermarket replacement; not an OEM Mercury MerCruiser component
What's in the Box
- 1 x Water pump impeller
- 1 x Pump gasket
Installation Notes
- Disconnect the battery and follow the engine manufacturer's safety procedure before servicing the seawater pump.
- Close the appropriate water inlet or seacock and allow the engine to cool completely.
- Access the seawater-pump housing and remove the cover fasteners.
- Record the installed impeller blade direction before removing the old impeller.
- Remove the old impeller using an appropriate puller or an approved removal method that will not damage the pump housing.
- Clean the pump housing, cover, and sealing surfaces. Remove debris and remnants of the old gasket.
- Lightly lubricate the new impeller with a suitable marine lubricant or liquid soap recommended for impeller installation. Do not run the pump dry.
- Install the impeller with the blades oriented in the direction required by the engine's normal rotation.
- Position the supplied gasket correctly on the pump sealing surface.
- Reinstall the cover and tighten the fasteners evenly according to the engine manufacturer's torque procedure.
- Reopen the water supply, reconnect the battery, and check for leaks and proper water flow immediately after startup.
Troubleshooting & FAQ
How do I confirm that this impeller kit fits my MerCruiser engine?
Compare the existing impeller or pump part number with 47-862232A2 or 8M0104229, confirm that the engine uses the applicable brass seawater pump, and verify the model and pump configuration against the compatibility information above. This kit is not suitable for a pump that has five 5/16-inch bolts on each side of the pump configuration.
What does this kit include?
The kit includes one replacement water pump impeller and one pump gasket. It does not include a complete pump housing, cover, fasteners, or other pump components.
What are common signs of a worn impeller?
Possible symptoms include engine overheating, reduced cooling-water flow, weak discharge at the exhaust, or visible cracking, hardening, distortion, or missing blades when the impeller is inspected.
Should the impeller be lubricated during installation?
Yes. Use a compatible marine lubricant or liquid soap to help protect the rubber during initial startup. Never operate the seawater pump dry, even briefly.
Is this an OEM part?
No. This is an aftermarket replacement kit that cross-references Mercury MerCruiser part numbers 47-862232A2 and 8M0104229.
How often should a marine impeller be replaced?
Inspect the impeller according to the engine or pump manufacturer's maintenance schedule. Replace it sooner if the engine has been operated dry, exposed to abrasive water, or shows overheating or reduced water-flow symptoms.
Safety & Important Information
- Confirm the complete engine model, serial-number range, pump housing, and fastener configuration before ordering.
- Do not install this kit on a pump with five 5/16-inch bolts on each side of the pump configuration.
- Use the supplied gasket and ensure all sealing surfaces are clean and undamaged.
- Never operate the seawater pump without an adequate water supply.
- Professional installation is recommended when the pump configuration or engine fitment is uncertain.
About Sea Sierra
- Marine Replacement Parts — We supply aftermarket components for routine marine maintenance and repair.
- Application-Focused Listings — Check the part number and pump configuration carefully before installation.
- Support for Maintenance Work — Clear kit contents and installation guidance help you prepare for scheduled service.
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