CATHydraulic Parts

1730143 Jet As- Piston Cooling — Cat 120H 120K

This is a CAT Piston Cooling Jet assembly, part number 1730143, which is a critical component in the engine's lubrication and cooling system. It functions by spraying oil onto the underside of pistons to dissipate heat and lubricate, thereby preventing engine damage. Failure symptoms can include increased engine oil temperature, blue smoke from the exhaust, or a noticeable loss of engine power.

Jet As- Piston Cooling – Part No 1730143 – CAT Spare Part
Part Specifications
BrandCAT
CategoryHydraulic 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

Flush hydraulic lines before fitting new components. Use only manufacturer-specified hydraulic fluid. Check O-rings and backup rings for correct orientation. Bleed air from system after installation.

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

Part TypePiston Cooling Jet
MaterialSteel
ApplicationEngine piston cooling
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of a failing piston cooling jet might be a slight increase in engine operating temperature or a faint smell of burning oil. If left unaddressed, this can lead to piston scuffing, ring damage, and potentially engine seizure due to overheating. The consequence is severe internal engine damage requiring costly repairs.

Installation Tip

Before installation, meticulously clean the oil gallery leading to the jet to prevent any blockage. Ensure the jet is correctly positioned to spray the intended area on the piston crown.

Service Note

When replacing piston cooling jets, it is advisable to inspect the engine oil and oil filter for any signs of metal debris.