CATEngine Parts

239-8976 Valve Gp Relief — Cat 345B 345Bl

This relief valve assembly is designed to regulate and limit pressure within a specific hydraulic or engine system, protecting components from over-pressurization. Manufactured to meet stringent OEM quality benchmarks, it offers reliable pressure control and durability superior to a worn valve that may stick or leak. Operators may observe sluggish hydraulic operation, erratic system pressure, or audible relief valve noise when this component is malfunctioning.

Valve Gp Relief – Part No 239-8976 – CAT Spare Part
Part Specifications
BrandCAT
CategoryEngine Parts
ConditionAftermarket — OEM Specification
DispatchSame-day from Mumbai (before 3 PM IST)
GST InvoiceAvailable — all orders
Export DocsCommercial invoice, packing list, COO

Compatible Models

Always verify with serial number before ordering.

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Installation & Application Notes

Inspect mating surfaces for wear before fitting. Use torque specs from service manual. Replace gaskets and seals as a set — reusing compressed gaskets causes oil leaks. Clean all oil passages with compressed air.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeRelief Valve Assembly
MaterialHardened steel, brass
ApplicationHydraulic system pressure regulation
Service LifeReplace as needed based on performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A faulty relief valve may initially cause the hydraulic system to feel less responsive or exhibit inconsistent pressure. If not addressed, the valve could fail to open, leading to dangerously high system pressures, or fail to close, resulting in a constant pressure drop and loss of power. Continued operation risks damage to hydraulic components and potential system failure.

Installation Tip

Ensure the valve seat area is perfectly clean before installing the new valve to prevent leaks or improper sealing. Avoid overtightening the valve into its port, as this can damage the threads or the valve body.

Service Note

Inspect the hydraulic fluid for cleanliness and check the condition of the hydraulic filters and seals in the system.