478M0137219 Mercury MerCruiser Impeller Kit | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Heavy Duty Sea Water Pump Impeller Kit - Part Number: 47-8M0137219

Genuine Quicksilver/MerCruiser heavy duty sea water pump impeller kit for selected MerCruiser V6 and V8 petrol engine raw-water pump applications. This OEM kit is designed for MerCruiser engines using the brass engine-mounted sea water pump and helps restore correct raw-water flow through the cooling system.

⚙️ Key Features

• Genuine Quicksilver/Mercury OEM heavy duty impeller kit

• Designed for MerCruiser V6 and V8 brass sea water pump applications

• Includes impeller and required sealing/service components

• Used on selected 305, 350, 496 and 502 CID MerCruiser engines

• Helps restore reliable raw-water flow and reduce overheating risk

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 47-8M0137219

• 47-8M0120891 related earlier heavy duty impeller kit reference

• 47-862232A2 related earlier impeller kit reference where fitted by pump style

OEM / Related Numbers:

• 47-8M0137219

• 8M0137219

• 478M0137219

• 47-8M0120891

• 8M0120891

• 47-862232A2

• 862232A2

• 817275Q05 related water pump rebuild kit reference

Aftermarket / Verified Equivalents:

• EMP: 47-09201

• Sierra: 18-3016-1

• REC: REC47-8M0137219

🚤 Compatibility

Commonly used on:

• MerCruiser engine-mounted brass sea water pump assemblies

• MerCruiser Bravo stern drive raw-water pump applications

• MerCruiser inboard sea water pump applications using the matching brass pump

Typically suits:

• Engine models:

• MerCruiser MCM V6 305 CID applications, 2000 and newer, with brass sea water pump

• MerCruiser MCM V8 350 CID applications, 2000 and newer, with brass sea water pump

• MerCruiser MCM 496 CID applications, 2000 and newer, with brass sea water pump

• MerCruiser MCM 502 CID applications, 2000 and newer, with brass sea water pump

• MerCruiser 5.0L V8 Bravo applications using the matching brass sea water pump

• MerCruiser 5.7L V8 Bravo applications using the matching brass sea water pump

• MerCruiser 6.2L / 377 CID V8 applications using the matching brass sea water pump

• MerCruiser 8.1L / 496 CID V8 applications using the matching brass sea water pump

• MerCruiser 8.2L / 502 CID V8 applications using the matching brass sea water pump

• HP Range: Application dependent across MerCruiser V6 and V8 petrol engine packages

• Engine Type: MerCruiser petrol stern drive / inboard engine-mounted raw-water pump system

• Year Range: Commonly 2000 and newer MerCruiser V6/V8 applications with brass sea water pump; not for newer 4.5L and 6.2L pump designs unless parts diagram specifies this kit

🔌 Function

The impeller kit services the engine-mounted raw-water pump that draws cooling water from outside the vessel and circulates it through the engine cooling system. A correct impeller kit helps restore pump sealing, cooling-water flow and engine temperature control.

Common signs of failure:

• Engine overheating

• Weak or reduced raw-water flow

• Overheating at idle or under load

• Cracked, hardened or missing impeller blades

• Rubber fragments in the cooling system

• Pump squeal or dry-running damage

• Poor cooling performance after long storage

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging