Factory Cost Price 4BT 4BTAA 4D102 3.9L Diesel Engine Cylinder Block 4089546 3938366 3903920 4991816 4089546 4991507 5405079

The 4BT engine is a water-cooled, in-line 4-cylinder turbodiesel engine from the Cummins B series. The engine has a cast iron cylinder block with holes drilled directly into the cylinder block. Valve mechanism of the engine – OHV. The camshaft is mounted in a block and is driven by the crankshaft through gears at the front of the engine (as well as the oil pump).

The camshaft opens and closes the valves, pushing the rocker arms with tappets and solid tappets. The cylinder head is also made of cast iron. The inlet and outlet pipes are on opposite sides (cross flow cylinder head). There are 8 valves, 2 per cylinder. 4BT is equipped with a mechanical direct injection system. Early versions were equipped with a mechanical P7100 injection pump, driven through a camshaft gear.

The 4BT engine has a turbocharger but no intercooling. The intercooled version (named as 4BTA, where the letter A stands for “aftercooling”) has a lower compression ratio of 16.5: 1. Low compression and cold air provide higher boost. The 4BTA engine provides more power and torque and is more suitable for installation in a small truck or pickup, but keep in mind that the 4BTA is an industrial engine. Air-cooled car engines are numbered differently depending on model and year. A naturally aspirated industrial version called 4B with a compression ratio of 18.5: 1 is also available.

The 4BT is inherently not as balanced as its 6-cylinder sibling, so it produces a lot of vibration and is not as smooth as it gets. The 3.9 liter Cummins engine has been a popular choice for many commercial cargo vans, used in industrial equipment such as powertrains, drilling machines, large water pumps, wood chippers, etc.

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FAQ:

Q1: Can you produce per the samples?
A: Yes, we can produce as per your samples or technical drawings. We have very professional technical team , We can build the molds and fixtures.
Q2: What is your terms of payment?
A: For stock items , we recommend full payment for fast shipping. If the items need to be produced , T/T 30% as deposit, and rest before delivery.

We'll show you the photos of the products and packages for checking before you pay the balance.
Q3: What is your package?
A: Depends on items , for light heavy goods, We usually pack our goods in neutral brown cartons , if heavy goods or big quantity ,we pack it by pallet or wooden box. Also we can customized package for your band as per your requirements.
Q4: What is your terms of delivery?
A: EXW, FOB, CFR, CIF.
Q5: What is your delivery time?

A: In general, if we have stock ,the goods can be delivered 1-3 days after your payment. If no stock, the specific delivery time will be depended on your order quantity.
Q6: Can you accept sample order?
A: Yes sure. We can supply the sample if we have the parts in stock.
Q7: Do you test all your items before delivery?
A: Yes, we have 100% test before delivery,we have strictly quality control policy.
Q8: Which shipment you can supply?
A: By sea, by air ,by train or by express (DHL, FEDEX ,TNT,UPS,EMS etc.)

Chongqing Formanhao Trading Co., Ltd is a company specialized in the production of engine cylinder head and sales of engine parts. We have been focus on production & sale of engine cylinders for years. And we start to do engine parts trading in recent years and become the Leading global engine system integrator. 

We have an international high-level management system and after-sales service system, as well as a professional team service, serving every customer one-by-one. Since its establishment, the company has always adhered to customer-centered technology development; the corporate philosophy of continuous innovation; and the corporate mission of making maintenance easier and employees happier. 

Our products are sold to Europe, Asia, Africa, South America, North America and Australia etc. And we have cooperation with more than 100 foreign trade companies. Sincerely look forward to working with you to create a better future.