CATEngine Parts

257-4183 Injector Wiring Harness — Cat C10 C12

This injector wiring harness is an essential part of the engine's fuel injection system, transmitting precise electrical signals to the fuel injectors. It is manufactured to meet strict OEM quality standards, ensuring reliable signal integrity and durability compared to a frayed or corroded harness. Operators may experience engine misfires, rough idling, poor fuel economy, or a check engine light illumination when this harness begins to fail.

Injector Wiring Harness – Part No 257-4183 – 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

1878391
Oil Cooler
1032858
Ring-Set (Os=.25Mm)
227-2911
6 Pcs Injector Sleeve
1744909
Solenoid Valve
375-0740-375-0741
Arm Cylinder Seal Kit
17504542s5658
Head Bolt Washer Hard

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 TypeInjector Wiring Harness
MaterialCopper wiring with protective insulation
ApplicationEngine fuel injection system
Service LifeReplace if damaged or exhibiting electrical faults
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

The initial symptom of a failing injector wiring harness is often intermittent engine misfires or a rough idle. If left unaddressed, the engine may experience a significant loss of power, increased fuel consumption, and the illumination of the check engine light. Complete failure of the harness can lead to the engine not starting or running very poorly, impacting operational capability.

Installation Tip

Carefully inspect the engine's wiring harness connectors for any signs of corrosion or damage before connecting the new harness. Ensure the new harness is routed and secured properly to prevent it from rubbing against engine components.

Service Note

Inspect the fuel injectors and the engine control module (ECM) connectors for any signs of damage or corrosion when replacing the injector wiring harness.