2719553 Mercury MerCruiser Gasket | Genuine Quicksilver OEM Part

🔧 Product Description

Genuine Quicksilver Lower Water Pump Base Gasket - Part Number: 27-19553

A genuine Quicksilver lower water pump gasket used on Mercury and Mariner outboard lower-unit water pump assemblies. This gasket seals the water pump base to the face plate area and is replaced during water pump, impeller, wear plate or gearcase cooling service.

⚙️ Key Features

• Genuine Quicksilver OEM gasket

• Correct Mercury part number 27-19553

• Lower water pump base to face plate gasket

• Cross-references with Mercury 27-32769

• Used in Mercury / Mariner 30HP to 70HP water pump service applications where specified

🔄 Supersession & Cross Reference

OEM Supersession Chain:

• 27-19553 current OEM service reference

• 27-32769 earlier / related lower water pump gasket reference

OEM / Related Numbers:

• 27-19553

• 19553

• 2719553

• 27-32769

• 32769

• 32768 related water pump face plate

• 27-19551 related upper face plate to pump body gasket

• 27-19552 related water pump base gasket

• 27-32770 related upper water pump gasket

• 47-89983 related impeller

• 46-60366A1 related water pump repair kit family

Aftermarket / Verified Equivalents:

• Sierra: 18-2823

• Sierra: 18-2823-9

• GLM: 31060

• Mallory: 9-60039

• Aqua Power: 304

• OMC / Johnson / Evinrude: 0508540

🚤 Compatibility

Commonly used on:

• Mercury / Mariner outboard lower-unit water pump assemblies

• Water pump repair kits using the 32768 / 54705 face plate family

Typically suits:

• Engine models:

• Mercury 30HP 2-stroke water pump applications where 27-19553 is specified

• Mercury 30HP - serial 0C159200 to 0G589999

• Mercury 30 Jet water pump applications where 27-19553 is specified

• Mercury 35HP 2-stroke water pump applications where 27-19553 is specified

• Mercury 35HP - serial 0A996142 to 0C159199

• Mercury 40HP 2-cylinder water pump applications where 27-19553 is specified

• Mercury 40HP 4-cylinder water pump applications where 27-19553 is specified

• Mercury 402 / 40HP 2-cylinder - serial 4860103 to 5556229

• Mercury 45HP outboard water pump applications where 27-19553 is specified

• Mercury 50HP outboard water pump applications where 27-19553 is specified

• Mercury 60HP outboard water pump applications where 27-19553 is specified

• Mercury 65HP 3-cylinder - serial 4382057 to 4571651

• Mercury 70HP 3-cylinder - serial 4571652 to 4977156

• Mercury 70HP - serial 4977157 to 6428680

• Mercury / Mariner 30HP to 70HP two-stroke water pump repair kit applications using impeller 47-89983 and face plate 32768 / 54705

• HP Range: commonly 30HP - 70HP where specified

• Engine Type: Mercury / Mariner outboard

• System Type: Lower water pump base to face plate gasket

🔌 Function

The gasket seals the lower water pump base and face plate area so the impeller can draw and pressurise cooling water without leakage around the pump base.

Common signs of failure:

• Weak cooling water flow

• Engine overheating after water pump service

• Water pressure loss at idle or under load

• Gasket torn or compressed during pump rebuild

• Poor seal despite a new impeller and wear plate

📦 Condition

• Genuine Quicksilver part

• Brand new

• Supplied in original or equivalent packaging