29571670 piston-c3/c4, cast piston Allison spare parts

29571670 piston-c3/c4, cast piston Allison spare parts

As a core power component compatible with Allison original equipment manufacturer (OEM) specifications, the Allison 29571670 cast piston (piston-c3/c4) is the core carrier for power transmission in the equipment’s engine and transmission. It is designed specifically for the harsh operating conditions of the C3/C4 series and precisely matches the power system requirements of Allison transmissions, heavy-duty construction machinery, and special vehicles. It is a key consumable material that ensures stable and efficient power output of the equipment.
This product strictly adheres to Allison’s original manufacturing standards, using ZAlSi12Cu2Mg1 cast aluminum alloy (aluminum-silicon-magnesium-manganese multi-element alloy). It undergoes multiple processes including precision casting, T6 heat treatment, and precision honing, balancing lightweight and high strength. It possesses core advantages such as high temperature resistance, high pressure resistance, wear resistance, deformation resistance, and excellent thermal conductivity. It efficiently converts the pressure generated by combustion into mechanical energy while rapidly transferring heat generated during operation, reducing the impact of heat load on components and preventing piston jamming, wear, deformation, and other malfunctions. This reduces downtime losses, extends the overall service life of the equipment’s power system, and lowers subsequent maintenance costs. It is widely used in mainstream applications of Allison C3/C4 series equipment, including agriculture, construction, mining, fire emergency response, and oil and gas. Adaptable to various harsh operating environments, it balances practicality and economy, making it a core component for maintaining Allison equipment power systems.

Core technical parameters:

– Product Model: Allison 29571670
– Product type: Cast piston (piston-c3/c4), suitable for C3/C4 series applications, belonging to the piston assembly category.
– Core material: ZAlSi12Cu2Mg1 cast aluminum alloy (aluminum-silicon-magnesium-manganese multi-element alloy), conforming to GB/T 1173-1995 standard, which can be strengthened by heat treatment.
– Material characteristics: Tensile strength ≥255MPa, hardness ≥90 (5/250/30)HBS, high thermal conductivity, good heat resistance, high fluidity and low linear shrinkage, excellent airtightness.
– Casting process: Precision casting in metal mold + T6 heat treatment (quenching at 515±5℃, holding for 6~8h, water cooling at 60~80℃; aging at 175±5℃, holding for 14~18h, air cooling), resulting in high dimensional accuracy and no sand holes or porosity.
– Surface treatment: The top surface is treated with hard anodizing, with an oxide film thickness of 0.04mm～0.08mm; the annular groove oxide film thickness is 0.01mm±0.003mm; the skirt is treated with graphitization, with a graphite layer thickness of 0.0015mm±0.005mm, which significantly improves wear resistance and lubrication effect, and reduces kinematic wear.
– Compatible models: Allison C3/C4 series gearboxes, heavy-duty construction machinery, special vehicles (including mining dump trucks, agricultural tractors, fire emergency vehicles, oil and gas exploration equipment, etc.), precisely matching the original factory mounting positions, and can be directly replaced.
– Core Advantages: Built-in cooling channels improve heat dissipation efficiency and prevent high-temperature deformation; precision honing process achieves a surface roughness Ra≤0.2μm, reducing motion resistance and fuel consumption; suitable for high-pressure conditions, with a working pressure up to 10MPa; excellent sealing performance eliminates gas leakage and improves power output efficiency.

Allison 29571670 cast pistons, with their original equipment manufacturer (OEM) compatibility, superior high-temperature and high-pressure resistance, and wear and deformation resistance, have become the preferred consumable for maintaining the power systems of Allison C3/C4 series equipment. Whether for personal equipment maintenance, bulk corporate purchases, or engineering maintenance support, they can meet diverse needs. The product is easy to install, requiring no specialized tools, and can directly replace original pistons, effectively solving common problems such as piston wear, deformation, and jamming. This reduces equipment downtime due to power component failure, lowers maintenance costs, and improves equipment operating efficiency.

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