U5LP0057 Maguro – a new quality piston available on the market
U5LP0057 - Piston dedicated to Perkins 1004.4 AK series and Caterpillar 3054 engines
There are many versions of the U5LP0057 piston available on the market – from the most affordable aftermarket replacements, through products from renowned manufacturers, to original parts.
The Maguro piston stands out at first glance. The design and finish make it a premium product, designed for high durability and reliability.
Modern surface finish
The piston is made of a high-quality aluminum alloy. Unlike other pistons with a black phosphate coating, the Maguro model retains the aluminum's natural color. The working surfaces are coated with a special graphite coating.
The graphite coating reduces friction between the piston and cylinder, improves wear resistance during engine break-in, and extends the life of the entire piston-cylinder assembly.
Reinforced first ring groove
The most stressed groove of the first ring has been reinforced with a high-nickel alloy.
This solution increases resistance to high temperatures and significantly reduces groove wear during long-term engine operation.
Repeatable mass of each piston
The average weight of a Maguro U5LP0057 piston is approximately 1.20 kg.
The manufacturer maintains a weight tolerance of up to 5% between individual pistons, ensuring high parameter repeatability and ensuring trouble-free operation of the piston set.
Precise grinding of the combustion chamber
The shape and depth of the combustion chamber determine how the fuel mixes with air at the moment of ignition.
In Maguro, the chamber geometry is ground to the dimensions shown in the technical drawing, without any deviations from the casting process.
This translates into consistent combustion in each cylinder – the engine runs more smoothly, produces less smoke on cold starts, and produces less deposits on the valves and cylinder head.
Rigorous quality control
Pistons undergo thorough quality control at the factory. This verification includes:
• measurement of the piston's outer diameter,
• inspection of the ring groove dimensions,
• checking the piston pin bore diameter,
• inspection of the internal casting structure using non-destructive testing, including X-ray inspection.
This ensures that each piston meets high quality standards and is ready for use in demanding operating conditions.
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