817275A2 Mercury MerCruiser Housing Kit | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Water Pump Housing Kit - Part Number: 817275A2

A genuine Quicksilver water pump housing kit used in selected Mercury / Mariner outboard and MerCruiser Alpha One Gen II water pump assemblies. This housing kit services the upper pump housing and related sealing components to help restore correct cooling water flow through the lower-unit water pump.

⚙️ Key Features

• Genuine Quicksilver OEM water pump housing kit

• Correct Mercury part number 817275A2

• Five-piece upper housing kit with seals and gaskets where supplied

• Does not include the impeller

• Used on selected Mercury / Mariner outboards and Alpha One Gen II water pump applications

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 817275A2 → Supersedes 817275A1

• 47-817275A8 related complete impeller repair kit reference

• 817275A1 earlier OEM reference

OEM / Related Numbers:

• 817275A2

• 817275A1

• 817275A8

• 47-817275A1

• 47-817275A2

• 47-817275A8

• 27-8172771 related gasket

• 47-43026T2 related impeller

Aftermarket / Verified Equivalents:

• Sierra: 18-3517

• GLM: 12280

• Mallory: 9-48311

• SEI Marine: 96-216-02K

🚤 Compatibility

Commonly used on:

• Mercury / Mariner outboard water pump housing applications

• MerCruiser Alpha One Gen II water pump housing applications

Typically suits:

• Engine / drive models:

• MerCruiser Alpha One Gen II sterndrive - serial 0D469859 and up

• Mercury 40 2-cylinder - USA serial 0G055314 and up

• Mercury 40 2-cylinder - Belgium serial 9854537 and up

• Mercury 40 3-cylinder - USA serial 0G590000 to 0T999999

• Mercury 40 3-cylinder - Belgium serial 9973100 and up

• Mercury 40 FourStroke 1.83:1 / 2.00:1 ratio - USA serial 0G231123 to 0T408999

• Mercury 40 FourStroke 1.83:1 / 2.00:1 ratio - Belgium serial 9944807 to 0P153499

• Mercury 40 FourStroke 1.83:1 / 2.00:1 ratio - Belgium serial 0P017000 to 0P153499

• Mercury 40 Carb 3-cylinder FourStroke 2.00:1 ratio - USA serial 0T409000 to 1B226999

• Mercury 40 Carb 3-cylinder FourStroke 20 inch driveshaft - USA serial 1B227000 to 1B344306

• Mercury 40 EFI FourStroke - applications where 817275A2 is specified

• Mercury 50 EFI FourStroke - applications where 817275A2 is specified

• Mercury 60 EFI FourStroke - applications where 817275A2 is specified

• Mercury 70 3-cylinder - USA serial 0A996142 to 0C221999

• Mercury 70 3-cylinder - Belgium serial 9483121 to 9589038

• Mercury 75 3-cylinder - USA serial 0A996142 and up

• Mercury 75 3-cylinder - Belgium serial 9483121 and up

• Mercury 75 DFI 1.5L 3-cylinder applications where 817275A2 is specified

• Mercury 90 DFI 1.5L 3-cylinder applications where 817275A2 is specified

• Mercury 115 DFI 1.5L 3-cylinder applications where 817275A2 is specified

• Mercury 125 4-cylinder applications where 817275A2 is specified

• Mercury 135 / 150 / 200 Verado 4-cylinder applications where 817275A2 is specified

• Mercury 200 / 225 / 250 3.0L EFI / DFI applications where 817275A2 is specified

• Mercury 200 / 225 / 250 / 275 / 300 Verado L6 applications where 817275A2 is specified

• HP Range: 40HP - 300HP where specified, plus Alpha One Gen II sterndrive applications

• Engine / Drive Type: Mercury / Mariner outboard and MerCruiser Alpha One Gen II

• System Type: Lower-unit water pump housing kit

🔌 Function

The housing kit restores the upper pump housing and sealing surfaces that allow the impeller to draw and pressurise cooling water.

Common signs of failure:

• Weak tell-tale water flow

• Engine overheating after impeller replacement

• Scored or distorted pump housing

• Water pressure loss at idle or under load

• Damaged gasket or seal surfaces during pump service

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging