CATEngine Parts

376-4336 Boom Cylinder Seal Kit — Cat C13

This boom cylinder seal kit is designed to replace worn or leaking seals within the hydraulic boom cylinder of CAT excavators, ensuring proper hydraulic pressure retention and smooth operation. It is manufactured using high-quality sealing materials that meet OEM specifications, providing superior resistance to wear and hydraulic fluid degradation compared to a damaged seal kit. Operators might observe slow or jerky boom movements, hydraulic fluid leaks around the cylinder, or a loss of lifting capacity if the seal kit has failed.

Boom Cylinder Seal Kit – Part No 376-4336 – 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

Related CAT Parts

From the same category — may also be needed

7X2688
Engine Parts Component
536-7311
Relief Valve
397-1559
Complete Cylinder Head With Valves
8m-1584
Fuel Injector Group
291-7590
Chassis Wring Harness
169-5779-1695779
Modulating Valve 169 5779

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 TypeHydraulic Cylinder Seal Kit
MaterialNBR rubber and polyurethane
ApplicationBoom cylinder hydraulic system
Service LifeReplace as needed based on inspection and performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first sign of a failing boom cylinder seal kit is often a visible hydraulic fluid leak around the cylinder rod or barrel. This can progress to sluggish or erratic boom movements, difficulty holding position under load, and a gradual loss of lifting power. If left unaddressed, significant internal leakage can lead to overheating of the hydraulic system and potential damage to the pump and other hydraulic components.

Installation Tip

Carefully clean the cylinder bore and rod before installing the new seals to prevent any dirt or debris from causing premature wear. Ensure all seals are properly seated and lubricated with hydraulic fluid before reassembly.

Service Note

Inspect the hydraulic fluid reservoir and filters for signs of contamination or excessive wear particles when replacing the boom cylinder seal kit.