3331668 3201785 Oil Cooler For Cummins KTA19 QSK19 Engines

Upgraded 316L stainless oil cooler core for Cummins K19, KTA19 and QSK19 engines. Direct replacement for 3201785.

SKU: 3331668

Description Additional information

Oil cooler core 3331668 is the upgraded replacement for 3201785 on Cummins K19, KTA19 and QSK19 engines. Where the earlier part used 304 stainless with segmented conventional brazing, 3331668 uses corrosion-resistant 316L stainless in a monolithic vacuum-brazed core. That change extends its use to seawater, saline-alkali and corrosive oilfield environments and improves thermal fatigue resistance. It drops straight in for 3201785; the reverse substitution is not viable.

Specifications

Comparison Item	3201785 \| 3331668 (Upgraded Version)
Base Material	Standard 304 stainless steel \| Corrosion-resistant 316L stainless steel
Brazing Technology	Segmented conventional brazing \| Monolithic integrated vacuum brazing
Corrosion Resistance	Suitable for freshwater inland scenarios; vulnerable to seawater and saline-alkali surroundings \| Adaptable to seawater, saline-alkali settings and corrosive oilfield environments
Temperature Difference Tolerance	Fits mild inland working conditions, prone to leakage under drastic temperature swings \| Resists cracking during sharp hot/cold shifts with superior thermal fatigue performance
Application Scope	Restricted to onshore construction machinery and stationary generator sets \| Covers heavy-duty harsh scenarios including land sites, vessels and offshore oilfields
Replacement Compatibility	Fully superseded by 3331668 \| Direct drop-in replacement for 3201785; downgrade replacement is not feasible

Key Features

Corrosion-resistant 316L stainless steel construction
Monolithic integrated vacuum brazing
Suited to seawater, saline-alkali and corrosive oilfield environments
Resists cracking under sharp hot and cold shifts
Direct drop-in replacement for 3201785
Downgrade substitution back to 3201785 is not feasible

Typical Applications

Marine vessels and offshore oilfield equipment
Onshore construction machinery
Stationary generator sets
Mining equipment

Ordering from Sino Bus Parts

Wholesale pricing; bulk orders welcome
Global shipping
Fitment confirmed against your engine serial or CPL before dispatch
Contact us on WhatsApp for a quotation

Part Number	3331668 3201785
Fitment	Cummins K19 KTA19 QSK19 Engines
Product Type	Oil Cooler Core
Material	stainless steel
Quality Standard	Genuine Cummins Quality(CCEC)
MOQ	Bulk Orders Accepted
Lead Time	3-15 Days Global Shipping

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