What is the material of the diesel pump?

[DelDavid]

The outer shell of the oil pump is made of aluminum-containing material. The moving molded parts inside are made of a sinterable, iron-based alloy material containing at least one austenite. The automotive oil pump should be replaced every 40,000 kilometers. The oil pump is an important component of the electronic gasoline injection system in a car engine. The functions of the oil pump include: providing hydraulic pressure for operating control valves and clutches; supplying a measured amount of gear oil to the transmission and differential case; and serving a circulating cooling function by delivering transmission oil to the cooler for heat dissipation.

[Martha]

The material of a diesel pump mainly depends on the pump type and operating environment. In common diesel vehicles, the pump body is typically made of aluminum alloy due to its lightweight, wear-resistant properties, and contribution to improved fuel efficiency. Critical internal components like the pump core often use stainless steel or high-strength steel to withstand the impact and corrosion of high-pressure diesel. Aluminum alloy resists rust quickly but is prone to wear in harsh environments, while stainless steel offers better corrosion resistance at the cost of added weight. I believe these material choices strike a balance between longevity and cost—if substandard materials like poor-quality aluminum alloy lead to cracks, they can cause oil leaks or engine failure. In modern vehicles, new materials such as engineering plastics are emerging, but they must pass high-pressure testing. The quality of materials directly impacts the pump's reliability and overall performance.

[CamilaMarie]

I've been driving diesel vehicles for ten years, and diesel pumps are mostly made of metal materials like aluminum or steel. From my experience, aluminum alloy pump housings are quite common—they're lightweight and durable, but sometimes develop slight corrosion after long-term use, which affects pump efficiency. Stainless steel is sturdier, especially in extremely cold regions where it's less prone to freezing or cracking. Material selection depends on the vehicle model and working conditions—for example, off-road vehicles prioritize impact resistance, so high-strength steel is often used. During maintenance, regularly checking the material's condition can prevent failures, as accumulated diesel impurities can wear down internal pump components over time. I believe using high-quality materials extends the pump's lifespan and reduces repair hassles. When buying a new vehicle or spare parts, paying attention to materials can save you trouble.

[AdalineLynn]

The material of diesel pumps is mostly metal, such as aluminum alloy pump bodies paired with steel internal components, which can withstand high pressure and resist corrosion. I know some new technological materials like engineering plastics for lightweight design are being applied in modern vehicle models. Differences in materials can affect the working stability and service life of the pump.