CATEngine Parts

356-3505 Turbo Gt25 Turbocharger — Cat 312E 312El

This GT25 turbocharger is a crucial component for boosting engine performance by forcing more air into the combustion chambers, leading to increased power and efficiency. Engineered to precise standards, it provides optimal boost pressure and durability, unlike a worn turbocharger with a damaged impeller or failing bearings. Operator symptoms of a failing turbocharger include a noticeable loss of engine power, excessive smoke from the exhaust, and unusual whining or whistling noises.

Turbo Gt25 Turbocharger – Part No 356-3505 – 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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Parts Trading Company  ·  Mumbai, Est. 1956  ·  Same-day dispatch  ·  Ships worldwide  ·  GST invoice included

const P = { partNo:'356-3505', name:'Turbo Gt25 Turbocharger', brand:'CAT', brandSlug:'cat', category:'Engine Parts', catSlug:'engine-parts', condition:'OEM Aftermarket', description:'This GT25 turbocharger is a crucial component for boosting engine performance by forcing more air into the combustion chambers, leading to increased power and efficiency. Engineered to precise standards, it provides optimal boost pressure and durability, unlike a worn turbocharger with a damaged impeller or failing bearings. Operator symptoms of a failing turbocharger include a noticeable loss of engine power, excessive smoke from the exhaust, and unusual whining or whistling noises.', xref:['356-3505'], models:["CAT", "Engine", "Excavator", "312E", "312El", "316El", "318El"], specs:[{key:'Part No',val:'356-3505'},{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": "6n5392", "name": "Engine Parts Component", "slug": "6n5392"}, {"partNo": "4P1659", "name": "Engine Parts Component", "slug": "4P1659"}, {"partNo": "273-3573", "name": "Rh Rear Lamp Assembly", "slug": "273-3573"}, {"partNo": "200-3366", "name": "Hydraulic Pump", "slug": "200-3366"}, {"partNo": "340-2121", "name": "Piston Pump", "slug": "340-2121"}, {"partNo": "197-0395", "name": "Radiator Oil Cooler", "slug": "197-0395"}], 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 primary function of the GT25 turbocharger on the C4.4 engine?',a:'The turbocharger uses exhaust gases to spin a turbine, which in turn drives a compressor to force more air into the engine cylinders, increasing power output.'},{q:'How can I verify that part number 356-3505 is the correct turbocharger for my CAT 312E?',a:'Confirm this part number against your machine\'s service manual or provide your equipment\'s serial number to a dealer for precise fitment verification.'},{q:'What makes this aftermarket turbocharger a reliable replacement option?',a:'This turbocharger is manufactured to meet OEM specifications, ensuring it delivers the correct boost pressure and durability for your engine.'},{q:'What maintenance should be performed before installing a new turbocharger?',a:'Ensure the engine oil and oil filter are changed, and the oil supply line is clean and free of obstructions to provide adequate lubrication for the new turbo.'}], 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": "Turbocharger"}, {"key": "Material", "val": "Cast Iron, Steel Alloy"}, {"key": "Application", "val": "Engine Turbocharging System"}, {"key": "Service Life", "val": "Replace as needed based on inspection"}, {"key": "Compatibility", "val": "OEM specification"}, {"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

6n5392
Engine Parts Component
4P1659
Engine Parts Component
273-3573
Rh Rear Lamp Assembly
200-3366
Hydraulic Pump
340-2121
Piston Pump
197-0395
Radiator Oil Cooler

Browse all CAT Engine Parts →

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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 TypeTurbocharger
MaterialCast Iron, Steel Alloy
ApplicationEngine Turbocharging System
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — OEM specification aftermarket

Failure Symptoms

Early signs of turbocharger failure often include a loss of engine power, especially under load, and a distinct whistling or whining sound from the engine bay. If ignored, the turbocharger can begin to consume oil, leading to blue smoke from the exhaust and a significant reduction in performance. Continued operation risks complete turbocharger seizure, potentially causing severe engine damage.

Installation Tip

Thoroughly clean the oil supply and return lines before connecting the new turbocharger to prevent contamination. Ensure the turbocharger is properly supported during installation to avoid stressing the exhaust manifold or mounting flanges.

Service Note

Always replace the engine oil and oil filter, and inspect the air intake and exhaust systems when replacing a turbocharger.