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Oil Cooler Core 3959031 for Cummins QSB6.7 Engines

Condition: Brand new & Original
OE: 3975818 4896409 4895742 3959031
Supply to Asia, Europe, Middle East, South America, Africa
Engine models: DCEC 4BT 6BT QSB5.9 QSB6.7 Diesel Engine Engines
Applicable Industries: Machinery Repair Shops, Retail.
After-sales Service Provided: Video technical support, Online support, Spare parts.
Place of Origin: Chonqqing, China
Warranty: 12 months
  • 3959031

  • DCEC


Oil Cooler Core 3959031 for Cummins QSB6.7 Engines

Mainwe-Engine was founded in 2010, is a worldwide refutable engine overhaul gasket manufacturer in China, our main products include engine overhaul gasket sets, cylinder head gaskets, and manifold gaskets or range of Cummins diesel engine vehicles. At the same time, we also supply Genuine and OEM spare parts for Cummins engines like cylinder, Crankshaft, camshaft, shaft bushing, connecting rod, cylinder body, cylinder cap, water pump, oil pump, cylinder sleeve, piston, piston ring… All of them have exported to the United States, Russia, South America, Middle East, Southeast Asia and covering over 20 countries and regions.


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All our products have a one-year warranty, but service is still the most important part of us. We provide you with free online technical support through video online or mails. No matter you are a retail store or a repairer, you can contact us whenever you have any technical questions, and we will reply to you in time to help you solve the problems.



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How can I get in touch with you in fast way?
A: Several methods are available for you easily to contact us, you will see there’s a live chat on each webpage, send messages to us directly here. And you can find our mail ID in page “contract us” , what’s more, you will get instant response by Skype, We-chat, or phone calls.

What’s the MOQ ?
A: One piece is available for sell also, but for some special parts like bearing, piston we may have MOQ like 6pcs per set, 12pcs per set, but we will inform if there is any MOQ for these parts.

What are the shipping methods?
A: We can arrange order sent by air, by land, by sea or by express (courier) like DHL, UPS, TNT, FedEx, or according to your request.

How can I make payment if the order is confirmed?
A: We accept Western Union, Bank Transfer (In USD or in RMB) most often.

What is your warranty ?
A: We usually provide 6 months' after-sales service for non-artificial damage.



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Room 3-11, Building No.8 Gov office, Free Trade Port Area, Chongqing City 400010, China
Always available on video technical support, Online support, Spare parts, Machinery Overseas and more efficient, friendly service for worldwide customers.
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