CATEngine Parts

306-8718 Hydraulic Pump Wiring Harness — Cat 315D 319D

This hydraulic pump wiring harness is an essential electrical conduit, transmitting signals between the hydraulic pump system and the machine's control module. Constructed with durable, oil-resistant insulation and robust connectors, it ensures reliable signal transmission, unlike a damaged harness which can cause intermittent system faults or complete loss of hydraulic function. Operators may experience erratic hydraulic movements, loss of hydraulic pressure, or diagnostic trouble codes related to the hydraulic system when this harness fails.

Hydraulic Pump Wiring Harness – Part No 306-8718 – 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

const P = { partNo:'306-8718', name:'Hydraulic Pump Wiring Harness', brand:'CAT', brandSlug:'cat', category:'Engine Parts', catSlug:'engine-parts', condition:'OEM Aftermarket', description:'This hydraulic pump wiring harness is an essential electrical conduit, transmitting signals between the hydraulic pump system and the machine\'s control module. Constructed with durable, oil-resistant insulation and robust connectors, it ensures reliable signal transmission, unlike a damaged harness which can cause intermittent system faults or complete loss of hydraulic function. Operators may experience erratic hydraulic movements, loss of hydraulic pressure, or diagnostic trouble codes related to the hydraulic system when this harness fails.', xref:['306-8718'], models:["CAT", "Engine", "Excavator", "315D", "319D"], specs:[{key:'Part No',val:'306-8718'},{key:'Brand',val:'CAT'},{key:'Category',val:'Engine Parts'},{key:'Condition',val:'Aftermarket — OEM Specification'},{key:'Dispatch',val:'Same-day from Mumbai (before 3 PM IST)'},{key:'GST Invoice',val:'Available — all orders'},{key:'Export Docs',val:'Commercial invoice, packing list, COO'}], relatedParts:[{"partNo": "263-8218", "name": "Fuel Injector", "slug": "263-8218"}, {"partNo": "7w-2329", "name": "Gasket", "slug": "7w-2329"}, {"partNo": "2344814PK", "name": "Piston-Std", "slug": "2344814PK"}, {"partNo": "7c-3821-7e-3568", "name": "Core Assembly", "slug": "7c-3821-7e-3568"}, {"partNo": "377-0607-tm88302", "name": "Solenoid Valve", "slug": "377-0607-tm88302"}, {"partNo": "515-8572", "name": "Quick Coupler Link", "slug": "515-8572"}], reviews:[{name:'Vikram Singh',loc:'Delhi, India',rating:5,text:'CAT part arrived fast. OEM specification, fits perfectly in my 320D. Highly recommend PTC.'},{name:'Ibrahim Al Rashid',loc:'Dubai, UAE',rating:5,text:'Great service and fast shipping to UAE. The CAT part was exactly as described. Very reliable supplier.'},{name:'Pradeep Sharma',loc:'Nagpur, Maharashtra, India',rating:4,text:'Quick response, good quality. Team confirmed compatibility before dispatch which I appreciated.'}], faq:[{q:'What is the function of the hydraulic pump wiring harness?',a:'This harness carries electrical signals to and from the hydraulic pump, allowing the machine\'s computer to control pump speed and pressure.'},{q:'How do I verify if part number 306-8718 fits my excavator?',a:'Confirm your excavator\'s model and serial number match the specifications listed for this harness, or consult your equipment\'s parts catalog.'},{q:'What makes this wiring harness a quality replacement?',a:'It is manufactured using high-grade materials and construction techniques to ensure durability and reliable electrical connections, meeting OEM performance standards.'},{q:'Should I replace any other components when installing a new harness?',a:'Inspect the hydraulic pump, solenoids, and related sensors for any signs of damage or corrosion that may have contributed to the original harness failure.'}], categoryDesc:'CAT Engine Parts from Parts Trading Company cover the full range of CAT equipment. We supply OEM-specification aftermarket engine parts sourced from certified manufacturers. PTC has supplied CAT engine parts to customers across India, UAE, Russia, Indonesia, and Africa since 1956. Our Mumbai warehouse stocks high-turnover CAT engine parts for same-day dispatch before 3 PM IST.', aiSpecs:[{"key": "Part Type", "val": "Wiring Harness"}, {"key": "Material", "val": "Copper wiring, PVC insulation"}, {"key": "Application", "val": "Hydraulic pump control system"}, {"key": "Service Life", "val": "Designed for the operational life of the equipment; replace if damaged"}, {"key": "Compatibility", "val": "CAT C4.2, 315D L, 319D"}, {"key": "Condition", "val": "New \u2014 OEM specification aftermarket"}],};script src="/assets/js/product-page.js">

Related CAT Parts

From the same category — may also be needed

263-8218
Fuel Injector
7w-2329
Gasket
2344814PK
Piston-Std
7c-3821-7e-3568
Core Assembly
377-0607-tm88302
Solenoid Valve
515-8572
Quick Coupler Link

Browse all CAT Engine Parts →

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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 TypeWiring Harness
MaterialCopper wiring, PVC insulation
ApplicationHydraulic pump control system
Service LifeDesigned for the operational life of the equipment; replace if damaged
CompatibilityCAT C4.2, 315D L, 319D
ConditionNew — OEM specification aftermarket

Failure Symptoms

An initial symptom of a failing harness might be intermittent loss of hydraulic function or erratic pump operation. If ignored, the problem can escalate to a complete loss of hydraulic power and potential system shutdown. This poses a risk of the equipment becoming inoperable and requiring towing.

Installation Tip

Carefully trace the routing of the old harness to ensure the new one is installed in the exact same path, avoiding pinch points or excessive strain. Ensure all connectors are fully seated and locked into place.

Service Note

Inspect the hydraulic pump solenoids and connectors for corrosion or damage; clean and lubricate electrical connections as needed.