CATEngine Parts

0r-9943 Fuel Injector — Cat 3406 3408

This fuel injector is a precision-engineered nozzle that atomizes and delivers fuel directly into the engine's combustion chamber at high pressure. Manufactured to exact specifications, it ensures optimal fuel atomization and spray pattern for efficient combustion, unlike a clogged or worn injector that can cause poor spray. Operators will typically observe rough engine running, black smoke from the exhaust, and a significant loss of engine power when a fuel injector fails.

Fuel Injector – Part No 0r-9943 – 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

M IST.', };

Related CAT Parts

From the same category — may also be needed

344-7392
Pressure Sensor
289-1453
Turbo Btv7511 Turbocharger
6t-9519
Excavators & Dozers
442-0106
Hydraulic And Transmission Filter
4V9804
Plate
148-4634-094-1509
Shaft

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 TypeFuel Injector
MaterialHardened steel and precision-machined components
ApplicationFuel injection system
Service LifeReplace as needed based on performance
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The first indication of a faulty fuel injector is usually rough engine operation, such as misfires or uneven idling, often accompanied by visible black smoke from the exhaust. If ignored, this can lead to a significant loss of engine power, increased fuel consumption, and potential damage to other engine components due to incomplete combustion. Continued operation with faulty injectors risks severe engine damage and costly repairs.

Installation Tip

Ensure the injector bore in the cylinder head is meticulously clean and free of any debris or carbon buildup before installation. Avoid rotating the injector during tightening, as this can damage the sealing surfaces.

Service Note

When replacing fuel injectors, it is highly recommended to replace the fuel filter and inspect the fuel lines for any signs of contamination or leaks.