CATEngine Parts

167-8161 Brake Master Cylinder — Cat 416D 420D

This is a Brake Master Cylinder, the primary component in the hydraulic braking system responsible for converting pedal force into hydraulic pressure. It is built to meet rigorous OEM standards, ensuring consistent and reliable braking performance, unlike a worn or leaking master cylinder. Operators may notice a spongy brake pedal, reduced braking effectiveness, or the brake warning light illuminating if this component fails.

Brake Master Cylinder – Part No 167-8161 – 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 TypeBrake Master Cylinder
MaterialCast iron and rubber seals
ApplicationHydraulic braking system
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A soft or spongy brake pedal is the most common initial symptom, indicating potential internal leaks. If ignored, braking performance will significantly degrade, requiring longer stopping distances. Failure to address a faulty master cylinder poses a serious safety risk due to compromised stopping ability.

Installation Tip

Thoroughly flush the brake system with new, clean brake fluid before installing the new master cylinder to remove contaminants. Never reuse old brake fluid, as it can degrade seals.

Service Note

Always replace the brake fluid and inspect all brake lines, hoses, and wheel cylinders/calipers when installing a new brake master cylinder.