Description:
PP-119574-33010 Yanmar Oil Cooler Assembly
The PP-119574 33010 Yanmar Oil Cooler Assembly is a marine grade lube oil cooler designed for use across the Yanmar 6LY and LY series high output marine diesel engines. This unit is responsible for maintaining correct engine oil temperature under sustained load conditions commonly encountered in commercial and performance recreational vessels.
Constructed as a 6 inch cylindrical shell and tube oil cooler, engine oil passes through an internal core while seawater or freshwater coolant circulates around it, efficiently transferring heat away from the oil. This process ensures stable oil viscosity, consistent lubrication, and long term protection of bearings, pistons, and turbocharger components.
Manufactured to OEM dimensional and flow specifications, the 119574 33010 is a direct fit replacement requiring no modification to brackets, plumbing, or mounting points. It is commonly replaced during scheduled overhauls or when corrosion, blockage, or zinc depletion compromises cooling efficiency in marine environments.
Widely used across both mechanical and electronically controlled 6LY / 6LY2 variants, this oil cooler assembly is a proven and reliable solution
Suits Yanmar:
• 6LYA STP
• 6LYA STE
• 6LY2A STP
• 6LY2A STE
• 6LYA Series marine diesel engines
• LY Series (all variants using the standard 6" cylindrical lube oil cooler configuration)
Replaces / Supersedes:
• Yanmar: 119574 33010
• Yanmar: 119574 33011 (later service replacement / direct interchange)