CATExhaust & Turbo

3G7657 Cartridge Gp- Front — Cat 235 623B

This front cartridge group is a vital assembly within the turbocharger, responsible for housing and supporting the rotating assembly. Manufactured to meet rigorous quality standards, it offers superior longevity and operational integrity compared to a worn or damaged cartridge. Observable signs of failure include a loss of boost pressure, excessive oil consumption, and unusual noises emanating from the turbocharger.

Cartridge Gp- Front – Part No 3G7657 – CAT Spare Part
Part Specifications
BrandCAT
CategoryExhaust & Turbo
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:'3G7657', name:'Cartridge Gp- Front', brand:'CAT', brandSlug:'cat', category:'Exhaust & Turbo', catSlug:'exhaust-turbo', condition:'OEM Aftermarket', description:'This front cartridge group is a vital assembly within the turbocharger, responsible for housing and supporting the rotating assembly. Manufactured to meet rigorous quality standards, it offers superior longevity and operational integrity compared to a worn or damaged cartridge. Observable signs of failure include a loss of boost pressure, excessive oil consumption, and unusual noises emanating from the turbocharger.', xref:['3G7657'], models:['235','623B','623E','633D','639D','966C','966R'], specs:[{key:'Part No',val:'3G7657'},{key:'Brand',val:'CAT'},{key:'Category',val:'Exhaust & Turbo'},{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": "2485246", "name": "Turbocharger Component", "slug": "2485246"}, {"partNo": "7W2874", "name": "Turbocharger Component", "slug": "7W2874"}, {"partNo": "3G7654", "name": "Cartridge Gp", "slug": "3G7654"}, {"partNo": "3G2837", "name": "Cartridge Gp", "slug": "3G2837"}, {"partNo": "7c0455, 7c7686, 7c7687", "name": "Turbocharger Component", "slug": "7c0455, 7c7686, 7c7687"}, {"partNo": "1335324, 1182025, 1182027", "name": "Turbocharger Component", "slug": "1335324, 1182025, 1182027"}], 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 front cartridge group in a turbocharger?',a:'The cartridge group contains the core rotating assembly (turbine and compressor wheels) and provides the necessary support and lubrication pathways for its high-speed operation.'},{q:'Is this CTP aftermarket cartridge group equivalent to the original CAT part?',a:'Yes, CTP aftermarket parts are designed and manufactured to meet or exceed OEM specifications, providing a reliable and cost-effective alternative.'},{q:'What are the common failure modes for a turbocharger cartridge?',a:'Common failures include bearing wear leading to shaft play, seal failure causing oil consumption, or damage to the turbine/compressor wheels from foreign object ingestion.'},{q:'What other components should be replaced when installing a new cartridge?',a:'It is highly recommended to replace the oil supply and drain lines, and inspect the air intake and exhaust systems for any debris or damage.'}], categoryDesc:'CAT Exhaust & Turbo from Parts Trading Company cover the full range of CAT equipment. We supply OEM-specification aftermarket exhaust & turbo sourced from certified manufacturers. PTC has supplied CAT exhaust & turbo to customers across India, UAE, Russia, Indonesia, and Africa since 1956. Our Mumbai warehouse stocks high-turnover CAT exhaust & turbo for same-day dispatch before 3 PM IST.', aiSpecs:[{"key": "Part Type", "val": "Turbocharger Cartridge Group"}, {"key": "Material", "val": "High-strength steel alloy"}, {"key": "Application", "val": "Front turbocharger assembly"}, {"key": "Service Life", "val": "Replace as needed based on inspection"}, {"key": "Compatibility", "val": "OEM specification"}, {"key": "Condition", "val": "New \u2014 CTP aftermarket replacement"}],};script src="/assets/js/product-page.js">

Related CAT Parts

From the same category — may also be needed

2485246
Turbocharger Component
7W2874
Turbocharger Component
3G7654
Cartridge Gp
3G2837
Cartridge Gp
7c0455, 7c7686, 7c7687
Turbocharger Component
1335324, 1182025, 1182027
Turbocharger Component

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Full shipping information on regional pages · Air freight 2–12 days · GST invoice for India

Installation & Application Notes

Allow turbo to idle 2–3 minutes before shutdown — this circulates oil through bearings and prevents coking. Check oil feed and drain lines for blockages before fitting new turbo. Replace oil and filter when fitting new turbo — old oil contains metal particles.

Always consult the OEM service manual for model-specific torque values and procedures. WhatsApp our technical team if you need fitment guidance.

Part TypeTurbocharger Cartridge Group
MaterialHigh-strength steel alloy
ApplicationFront turbocharger assembly
Service LifeReplace as needed based on inspection
CompatibilityOEM specification
ConditionNew — CTP aftermarket replacement

Failure Symptoms

A primary indicator of a failing cartridge group is a significant drop in engine power and a noticeable increase in exhaust smoke. If the issue persists, the turbocharger may begin to consume excessive oil, leading to blue smoke and potential engine damage. Ignoring these symptoms can result in complete turbocharger failure and potential engine harm.

Installation Tip

Thoroughly clean the oil supply and drain passages before installing the new cartridge to prevent immediate lubrication issues. Ensure the cartridge is correctly oriented before securing it to avoid damaging the seals or rotating components.

Service Note

Always replace the turbocharger oil supply and drain lines when installing a new cartridge group to ensure proper lubrication and prevent contamination.