CATEngine Parts

421-5481 Hydraulic Oil Filter — Cat 304E2 304

This is a high-efficiency hydraulic oil filter, designed to remove contaminants from the hydraulic fluid circulating within the machine's main hydraulic system. Manufactured to meet rigorous OEM quality standards, it offers superior filtration compared to a clogged or damaged filter, which can restrict flow and allow debris to circulate. Operators may observe a spongy or unresponsive hydraulic system, increased fluid temperature, or audible pump whine when this filter is compromised.

Hydraulic Oil Filter – Part No 421-5481 – 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

/script>

Related CAT Parts

From the same category — may also be needed

263-5418
Rocker Switch
liners
Liners
261-5042
Rocker Switch Assembly
6N4126lK
Engine Parts Component
250-4455
Right Hand Radiator Tank
353-7439-353-2748
1 Set Main Bearing

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 Oil Filter
MaterialCellulose/Synthetic Blend Media
ApplicationMain Hydraulic System
Service LifeReplace every 500-1000 hours or as per manual
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

A clogged hydraulic oil filter can lead to a noticeable decrease in hydraulic system performance, such as slower implement speeds and reduced lifting capacity. If left unaddressed, the filter will eventually become completely blocked, severely restricting oil flow and potentially causing the hydraulic system's bypass valve to open, allowing unfiltered oil to circulate and accelerate wear. The ultimate consequence is accelerated damage to hydraulic components due to contamination and potential overheating.

Installation Tip

Ensure the new filter's gasket is clean and lightly lubricated with clean hydraulic oil before installation. Do not overtighten the filter, as this can damage the gasket or the filter housing.

Service Note

Always replace the hydraulic oil and inspect the suction strainer when changing the hydraulic oil filter.