CATEngine Parts

1r-6573 10 Pieces Injector Seal — Cat 320D

This is a set of 10 injector seals designed to create a tight seal between the fuel injector and the engine cylinder head, preventing fuel or combustion gases from leaking. Manufactured to meet stringent Caterpillar standards, these seals ensure optimal fuel delivery and combustion efficiency, unlike worn seals that allow leakage and performance degradation. Operators may notice rough idling, reduced engine power, or visible fuel leaks around the injectors when these seals fail.

10 Pieces Injector Seal – Part No 1r-6573 – 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.

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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 Seal Kit
MaterialNBR Rubber
ApplicationFuel Injection System
Service LifeReplace as needed during injector service
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Initial signs of failing injector seals include a noticeable drop in engine performance and increased fuel consumption. If left unaddressed, the problem can escalate to rough idling and potential cylinder misfires, leading to uneven engine operation. Continued neglect risks internal engine damage from fuel dilution of oil and combustion contamination.

Installation Tip

Ensure the injector bore and injector tip are meticulously clean before installing new seals to prevent immediate leaks. Avoid over-tightening the injector hold-down bolts, as this can deform the new seals and cause premature failure.

Service Note

Inspect the fuel injectors themselves for wear or damage and clean the injector cups thoroughly before installing new seals.