Basic Info.
| Part no. | C6121 | Material | steel |
| Type | cylinder head | Part Type | Engine Parts |
| Compatibility | ShangChai | Transport Package | Wooden box |
| Trademark | DIRON | Origin | Luoyang City |
| HS Code | 84099991 | Production Capacity | 5000PCS/Year |
Product Details
- Item Model：C6121
- Date First Listed：2026/01/06
- Manufacturer：Diron Parts
Product Description
- Part Number: C6121
- Part Type：Cylinder Head
- Description: Replacement Parts Shangchai C6121 cylinder head, New
The C6121 (also known as SC11CB) cylinder head is a high-quality aftermarket casting engineered for Shanghai Diesel Engine Co. (Shangchai) C6121 engines. Cast from high-strength grey iron with increased nickel content for superior thermal stability, this head is fully machined to precise tolerances and pressure-tested, delivering excellent durability and performance in demanding industrial, construction, and marine applications.
Key Features & Benefits
- All-new grey-iron casting with reinforced valve bridge and deck areas for high-boost reliability
- Pre-installed premium valve seats and bronze valve guides
- Precision-machined combustion chambers and ports for optimal flow and compression
- Thick deck surface designed for repeated high-cylinder-pressure cycles
- 100 % pressure-tested to 100 psi and vacuum-verified for zero porosity
- Compatible with standard 3306 valve train, injectors, and gaskets
- Excellent heat dissipation and crack resistance in severe-duty environments
Technical Specifications
- Engine Model Reference: Shangchai C6121 / SC11CB (3306-compatible)
- Configuration: 6-cylinder inline, 24-valve
- Material: High-nickel grey iron (280–320 BHN)
- Combustion Chamber: Direct-injection pre-cup design
- Weight (bare head): ≈ 95 kg (209 lb)
Important Note:
- We only provide replacement products intended for aftermarket use in the ShangChai machinery listed above. The brand name ShangChai 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.
