6251-21-6542  oil hose is designed for the Komatsu PC400 excavator to ensure stable and efficient engine oil circulation. Made from high-grade, oil-resistant rubber with reinforced layers, this hose provides dependable performance under continuous pressure and high-temperature conditions.

Its precise dimensions and molded structure allow for secure installation, helping maintain proper lubrication flow within the engine system.

• Direct replacement for OEM part 6251-21-6542

• Reinforced oil-resistant rubber construction

• Maintains reliable oil flow for engine lubrication

• Built to withstand heat, pressure, and heavy-duty operation

• Accurate fitment for Komatsu PC400

• Durable structure reduces the risk of leaks or hose fatigue

Used on Komatsu PC400 excavators to transport engine oil between lubrication components, supporting smooth and efficient engine operation.

We offer compatibility guidance, installation suggestions, troubleshooting support, and ongoing technical assistance.

Individually packaged with protective materials; shipped through reliable carriers with tracking available.

• What is the function of the YNF17403 engine oil hose?

• Which excavator model is this hose compatible with?

• What material is the hose made from?

• Does this hose meet OEM requirements?

• Is installation simple for this oil hose?

• How can I know when an oil hose needs replacement?

• Can this hose fit other Komatsu models?

• Is the hose resistant to high temperature and oil exposure?