CATUndercarriage

7Y1258 Piston — Cat 330 330 FM L

This piston is a critical component of the engine's combustion system, responsible for converting the expanding gases from fuel combustion into mechanical force. It is manufactured to meet stringent OEM standards, ensuring superior durability and performance compared to worn or damaged pistons. Operators may notice a loss of engine power, increased exhaust smoke, or unusual engine noises when a piston begins to fail.

Piston – Part No 7Y1258 – CAT Spare Part
Part Specifications
BrandCAT
CategoryUndercarriage
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.

WhatsApp for Price & Availability☎ Call Mumbai Office

Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

fore 3 PM IST.', };

Related CAT Parts

From the same category — may also be needed

2024296
Idler Gp-Track
1397701
Cylinder As (Lh)
7g0841
Undercarriage Component
1111730
Idler Gp-Front
6T9538
Undercarriage Component
1W4369
Pulley-Alternator

Browse all CAT Undercarriage →

Installation & Application Notes

Cross-reference part number with serial number before ordering to confirm fitment. Keep original parts until new ones are confirmed correct. Record part numbers replaced for future reference.

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

Part TypeEngine Piston
MaterialForged Aluminum Alloy
ApplicationEngine Cylinder
Service LifeReplace based on engine overhaul schedule
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of piston failure can include a noticeable decrease in engine performance and an increase in blue or white exhaust smoke. If left unaddressed, the problem can lead to increased oil consumption and potential cylinder wall damage. Continued operation risks severe engine internal damage and costly repairs.

Installation Tip

Ensure the cylinder bore is thoroughly cleaned and free of any debris before installing the new piston. Avoid forcing the piston into the cylinder, as this can damage the piston skirt or the cylinder wall.

Service Note

Always inspect cylinder liners, connecting rod bearings, and piston rings for wear or damage when replacing a piston.