881527T01 Mercury Cooler | Genuine Used Part

🔧 Product Description

Genuine Mercury 115 EFI Fuel Cooler - Part Number: 881527T01

A genuine used Mercury fuel cooler for Yamaha-manufactured Mercury and Mariner 115 EFI four-stroke outboards.

The cooler forms part of the engine's fuel-delivery assembly and helps reduce fuel temperature before the petrol is supplied through delivery pipe 881518T to the electronic injectors.

⚙️ Key Features

• Genuine Mercury fuel cooler
• Correct Mercury reference 881527T01
• Used in the 115 EFI fuel-delivery system
• Connects with factory hoses, collars and delivery pipe
• Helps limit fuel heating and vapour formation

🚤 Compatibility

Commonly used on

• Mercury and Mariner 115 EFI four-stroke engines
• Yamaha-manufactured Mercury fuel-injection assemblies
• Fuel systems using delivery pipe 881518T

Typically suits

• Engine models:
• Mercury 115 EFI four-stroke
• Mariner 115 EFI four-stroke
• Serial range 0T178500 through 0T800999
• Serial range 0T801000 through 1B226999
• HP Range: 115HP
• Engine Type: Inline four-cylinder, four-stroke EFI outboard
• Year Range: Approximately 2001 - 2006

🔌 Function

The cooler transfers excess heat away from the fuel circuit, helping maintain stable fuel density and reduce the chance of vapour formation during hot engine operation.

⚠️ Common Signs of Failure

• Petrol or cooling-water leakage around the cooler
• Fuel becomes excessively hot
• Engine is difficult to restart when hot
• Vapour-related hesitation under load
• Corrosion around hose connections
• Restricted internal cooler passages
• Damaged or loose mounting collars

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 881527T01 Mercury fuel-cooler reference

OEM / Related Numbers

• 881527T01
• Delivery pipe: 881518T
• Fuel injector: 880887T1
• Fuel-pressure regulator: 880888T02
• Cooler bolt: 881507
• Cooler washer: 881533
• Collar: 888260
• Collar: 881526
• Fuel hoses: 881528, 881529 and 881536

Aftermarket / Verified Equivalents

• No aftermarket equivalent

📦 Condition

• Genuine used part
• Removed from running engine where applicable
• In good working condition unless otherwise stated