Basic Info.
| Parts no. | 3934900 | Material | Iron |
| Type | Cylinder Block | Parts Type | diesel engines parts |
| Engine No. | Cummins 6CT | Transport Package | Wooden Box |
| Trademark | DIRON | Origin | Luoyang City |
| HS Code | 84099991 | Production Capacity | 5000PCS/Year |
Product Details
- Item Model：3934900
- Date First Listed：2026/03/16
- Manufacturer：Diron Parts
Product Description
- Parts Number：3934900
- Parts Type：Cylinder Block
- Compatible Equipment：Cylinder Block 3934900 suit for Cummins 6CT
The 3934900 is a complete aftermarket cylinder block assembly engineered for Cummins 6CT (8.3L) series diesel engines. This core engine component serves as the main structural foundation, housing the crankshaft, pistons, camshaft, liners, and oil/coolant passages, delivering precise alignment, reliable thermal stability, and long-term durability in high-duty-cycle heavy equipment, trucking, and industrial power applications.
Key Features & Benefits
- All-new casting with precision-machined main bearing bores, cylinder liners seats, and deck surface
- Accurate camshaft tunnel and lifter bore alignment for smooth valve train operation
- Optimized oil and coolant galleries for efficient lubrication and heat transfer
- Factory-matched mounting points for oil pan, front gear housing, rear adapter, and accessories
- 100 % pressure-tested for main oil gallery, coolant passages, and deck integrity
- Proven reliability in high-hour 6CT engine rebuilds and repowers
Common Applications (Cummins® Compatibility)
- Engine: 6CT / 6CTA8.3 (8.3L, all ratings – mechanical and early electronic variants)
- Typical Machines & Equipment: – Wheel Loaders (various OEM brands using 6CT) – Excavators & Hydraulic Machines – Bulldozers & Crawler Tractors – Heavy-Duty Trucks & Haul Trucks (repower or older fleets) – Generator sets, marine propulsion, and industrial power units
Technical Specifications
- Part Number Reference: 3934900
- Configuration: 6-cylinder inline diesel block
- Bore Diameter: Factory-matched (114 mm / 4.49 in)
- Deck Height: Standard 6CT specification
- Main Bearing Caps: 7-cap design
- Weight (bare block): ≈ 180–200 kg (397–441 lb)
Important Note:
- We only provide replacement products intended for aftermarket use in the Cummins machinery listed above. The brand name Cummins is used solely as reference information to indicate compatibility and does not imply that our products are OEM.
- Note: While this description provides general information, specific details such as size, weight and exact material may vary by manufacturer and specific application. To obtain the most accurate and up-to-date information, it is recommended to consult a qualified parts supplier such as DIRON PARTS.
FAQ
Q1. What is your terms of packing?
A: Generally, we pack our goods in neutral white boxes and brown cartons. If you have legally registered patent, we can pack the goods in your branded boxes after getting your authorization letters.
Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages before you pay the balance.
Q3. What is your terms of delivery?
A: FOB
Q4. How about your delivery time?
A: Generally, it will take 20 to 30 days after receiving your advance payment. The specific delivery time depends on the items and the quantity of your order.
Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.
Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and the courier cost.
Q7. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery
Q8: How do you make our business long-term and good relationship?
A:1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, no matter where they come from
ABOUT DIRON
- Factory OF DIRON
Diron Parts Group Have Its Own Factory Ensure That We Offer Better Price For Customers. Besides, Diron Corporate With Some Reliable Principal Manufacturers, So Diron Also Supply Customer Other Quality Spare Parts.
- Team OF DIRON
With 18 years of manufacturing and exporting experience, Diron has a team of knowledgeable engineers, inspectors and technical workers, sales staff, after-sales personnel.
- Products OF DIRON
As a distributor, we supply parts covers for :Complete engines, Long block, Short block, Engine spare parts, Electricla products, Hydraulic products, Transmission products, Undercarridge products.Among them, Cylinder head, Cylinder block, Spacer-plate, Bushing & Pin are our best-selling products.
