119787-42570 Yanmar Manifold Gasket | Genuine OEM Marine Part

🔧 Product Description

Genuine Yanmar 6LP / 6LPA Sea Water Pump Gasket - Part Number: 119787-42570

A genuine Yanmar sea-water-pump mounting gasket for 6LP and 6LPA marine diesel engines. Yanmar catalogues 119787-42570 as a water-pump gasket used at the pump-to-engine or pump-adaptor mounting joint.

⚙️ Key Features

• Genuine Yanmar formed sea-water-pump mounting gasket
• Correct bolt pattern and coolant opening for the LP-series pump
• Heat-, seawater- and compression-resistant gasket material
• Single-use replacement whenever the sea-water pump is removed

🚤 Compatibility

Commonly used on

• Yanmar 6LP-DT, 6LP-DTE, 6LP-DTZE and 6LP-DTZE1
• Yanmar 6LP-ST, 6LP-STE, 6LP-STZE and 6LP-STZE1
• Yanmar 6LP-WDT, 6LP-WDTZY, 6LP-WST and 6LP-WSTZY
• Yanmar 6LPA-DTE/DTP/DTZE/DTZP and related P1 variants
• Yanmar 6LPA-STE/STP/STZE/STZP, including STP2/STZP2/STZP3 where specified

Typically suits

• HP Range: Approximately 250-315 HP
• Engine / System Type: 4.164-litre inline six-cylinder turbocharged and intercooled Yanmar marine diesel
• Year Range: Approximately 1997 onward, LP-series model dependent
• Serial / Identification Range: Confirm the sea-water-pump casting and engine-specific cooling-pump diagram. Direct-mount and shock-absorber pump arrangements can use different adjoining components.

🔌 Function

Seals the sea-water pump to its engine or adaptor mounting face so suction and discharge water remain contained and air cannot enter the pump inlet.

⚠️ Common Signs of Failure

• Seawater leakage at the pump mounting flange
• Pump loses prime or draws air
• Gasket is torn, compressed or heat damaged
• Corrosion or pitting is present on the pump or adaptor face
• Sea-water pump has been removed for overhaul or replacement

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 119787-42570 - current/legacy Yanmar water-pump gasket reference
• 120445-44640 - related replacement/cross-reference shown by selected marine-parts catalogues; verify pump casting

OEM / Related Numbers

• 119787-42570
• 11978742570
• 120445-44640

Aftermarket / Verified Equivalents

• JMP replacement gasket for Yanmar 119787-42570
• Recmar/aftermarket 6LP sea-water-pump mounting gasket

📦 Condition

• Genuine Yanmar OEM marine water-pump gasket, brand new.
• Brand new
• Supplied in manufacturer or equivalent protective packaging