Efficient Used Marine Engines with Gearbox for Boats

• Customization: Available
• Cooling System: Liquid-cooled
• Cylinder Configuration: V10
• Model NO.: 4BT 6BT 6CT
• Condition: Used
• Reference No: 4bt 6bt 6CT
• Delivery Time: 1-7days
• Color: Can Wash and Paint
• Truck Model: Commal
• Purpose: for Replace/Repair
• Engine Model: 4bt 6bt 6CT
• Oeno.: 4bt3.9
• MOQ: 1PCS
• Packing: Wooden Box
• Year: 2003-2007
• Quality: Excellent
• Key Word: Used Complete Engine
• Trademark: cum mins
• Origin: China

Product Description

Description of the flange

Aluminum Alloy: Common options include 6061-T6 (tensile strength: 42-45 ksi) and 7075-T6 (tensile strength: 74-78 ksi). The latter, with strength close to steel and lighter weight, is the preferred choice for high-end modifications
Steel: Traditional steel flanges offer high strength but are heavier, gradually being replaced by aluminum alloys, and are now used only in specialized heavy-duty scenarios
Bolt Grade

Flange bolts must meet Grade 10.9 or higher to ensure connection reliability. Nuts are typically one grade lower (e.g., Grade 8) to avoid brittle fractures caused by excessive hardness
Manufacturing Process

10,000-ton forging process: Ensures material density and structural integrity.
T6 heat treatment: Includes solution treatment and artificial aging to enhance fatigue resistance
 
 
 
 
 
 

Spatial Compatibility
Unlike aftermarket radiators, OEM components perfectly align with the engine bay layout, avoiding installation conflicts (e.g., squeezing pipelines or electronics) and optimizing airflow guidance through shrouds to reduce aerodynamic losses.

Materials and Processes

Aluminum Alloy Welding: Utilizes vacuum brazing technology, with weld strength exceeding 350 MPa and corrosion resistance far surpassing conventional soldering. Annual leakage rates remain below 0.01%.
Fin Design: Corrugated or louvered stamping patterns, combined with hydrophilic coatings, enhance condensate drainage and prevent heat dissipation degradation caused by debris buildup.
Durability Testing
OEM radiators undergo extreme environment validation (e.g., -40°C to 130°C thermal cycling, 1,000-hour salt spray tests), ensuring less than 5% performance degradation within 100,000 kilometers.

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Q1: Do you accept the sample list?
A1: Accepted. Depending on the number of samples purchased, only the sample fee and courier fee will be charged.

Q2: What is the sample preparation time?
A2: Existing projects: Delivery support within 7 days.
Planned projects: Delivery support is usually provided within 7-14 days.
Any special circumstances will be explained in advance.

Q3: Do you accept customised brands?
A3: In order to meet our minimum order quantity, you can print your specified branding on the products and packaging.

Q4: Does it support custom colours?
A4: To meet our minimum order quantity, product colours can be customised according to your requirements.

Q5: How do you guarantee the quality of the product?
A5: (1) Strict inspection during the production process.
(2) Products should be strictly sampled and inspected before shipment to ensure that the product packaging is intact.