CATEngine Parts

274-8359 Oil Jet Tube — Cat C18

This oil jet tube is a critical component within the engine's lubrication system, specifically designed to spray lubricating oil onto engine components like pistons and cylinder walls. It ensures adequate cooling and lubrication to prevent wear and overheating, maintaining optimal engine health. A worn or clogged oil jet tube can lead to increased piston-to-cylinder wall friction, audible knocking sounds from the engine, and potentially reduced engine life if not addressed.

Oil Jet Tube – Part No 274-8359 – 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 TypeOil Jet Tube
MaterialSteel
ApplicationEngine lubrication system (piston cooling)
Service LifeReplace as needed during engine repair
CompatibilityCAT specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing oil jet tube may be an unusual knocking sound from the engine, particularly under load. If the issue progresses, the affected piston and cylinder may experience increased wear, leading to higher oil consumption and elevated oil temperatures. Prolonged operation without proper piston cooling can result in severe engine damage, including piston seizure.

Installation Tip

Ensure the oil passages leading to the jet tube are completely clear of debris before installation; any blockage will prevent proper oil flow. Use the correct thread sealant if applicable, and avoid over-tightening, which can damage the tube or its mounting point.

Service Note

Inspect the piston, cylinder liner, and crankshaft bearings for signs of wear or damage when replacing the oil jet tube.