CATEngine Parts

170-9918 Piston Pump — Cat C18

This is a Piston Pump for Caterpillar hydraulic systems, responsible for generating high-pressure hydraulic flow essential for operating machine functions like boom, stick, and bucket movements. It is engineered to meet strict OEM performance and durability standards, providing consistent flow and pressure, unlike a worn pump that may exhibit reduced efficiency and erratic operation. Operators may notice slow or weak hydraulic functions, increased cycle times, or a loss of overall machine power if this piston pump fails.

Piston Pump – Part No 170-9918 – 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.

WhatsApp for Price & Availability☎ Call Mumbai Office

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

PM IST.', };

Related CAT Parts

From the same category — may also be needed

1W8922
Piston Ring Group
7k-3526
Universal Joint
096-4499
6 Pieces Push Rod
2w-8002
Water Pump
3564787lK
Body-Stl P
373-6970-475-5066
Male Female Flat Face

Browse all CAT Engine Parts →

Ship This Part To Your Location

DubaiSaudi ArabiaNigeriaKenyaSouth AfricaBangladeshMalaysiaGhanaQatarEgypt
India
MaharashtraGujaratTamil NaduRajasthanKarnatakaTelangana

Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

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 TypePiston Pump
MaterialHardened Steel Alloy
ApplicationMain hydraulic system
Service LifeReplace as needed based on performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of a failing piston pump include a noticeable decrease in the speed and power of hydraulic functions, such as slower bucket curl or boom extension. If ignored, this can lead to significantly reduced machine productivity and increased cycle times. The worst consequence is a complete loss of hydraulic pressure, rendering the equipment inoperable and potentially causing damage to other hydraulic components due to lack of flow.

Installation Tip

Thoroughly flush the entire hydraulic system, including hoses and cylinders, before installing a new piston pump to remove any debris that could cause immediate damage. Ensure the pump shaft is properly aligned with the drive coupling to prevent stress and premature wear.

Service Note

Inspect hydraulic fluid for contamination, clean or replace hydraulic filters, and check hydraulic hoses and cylinders for any signs of wear or leakage when replacing the piston pump.