6BT 6BT5.9 6D102 QSB5.9 Intake Valve 3802355 & Exhaust Valve 3802356 for Cummins Diesel Engine

Product Details

Product Overview

This matched set of Intake Valve (Part No. 3802355) and Exhaust Valve (Part No. 3802356) is engineered for Cummins B-Series and C-Series diesel engines, specifically models including the 6B, 6BT, 6BT5.9, 6D102, and QSB 5.9. These valves are critical components for maintaining optimal compression, combustion efficiency, and overall engine performance in heavy-duty applications.

Manufactured to OEM specifications, these valves provide a direct replacement for worn or damaged components. They are commonly used in a wide range of industrial equipment such as excavators, loaders, bulldozers, forklifts, buses, and trucks, ensuring reliable operation under demanding conditions.

Key Features & Benefits

• Precise Fitment: Manufactured to OEM size and specifications (3802355 / 3802356) for a direct, drop-in replacement in compatible Cummins 6BT and 6D102 engine heads.
• Enhanced Durability: Constructed from high-strength alloy steel to withstand extreme temperatures and pressures inside the combustion chamber, reducing wear and extending service life.
• Improved Engine Efficiency: Precision-ground valve faces and stems ensure a perfect seal, optimizing compression, fuel economy, and reducing blow-by.
• 100% Interchangeable: Designed to match the original Cummins part numbers 3802355 (Intake) and 3802356 (Exhaust), eliminating compatibility guesswork.
• Rigorous Quality Control: Each valve undergoes dimensional and material testing to guarantee performance and reliability in heavy-duty diesel applications.
• Cost-Effective Solution: Offers a high-quality aftermarket alternative to expensive OEM parts, providing excellent value for fleet maintenance and repair shops.

Technical Specifications

OEM Cross-Reference

This valve set is a direct replacement for the following OEM part numbers:

• Cummins Intake Valve: 3802355
• Cummins Exhaust Valve: 3802356

These parts are designed to interchange with original equipment valves used in the Cummins B5.9 and C8.3 engine families. Always verify your engine’s specific valve train configuration before ordering.

Compatibility

This intake and exhaust valve set is commonly used for the following engine and vehicle applications:

• Engine Models: Cummins 6B, 6BT, 6BT5.9, 6D102, QSB 5.9
• Vehicle / Equipment Applications:
  • Excavators
  • Forklifts
  • Loaders
  • Bulldozers
  • Buses
  • Trucks
  • Agricultural & Industrial Machinery

Note: Fitment is inferred based on engine model compatibility. Please confirm your specific engine serial number and cylinder head design prior to installation.

Global Supply & Distribution

We maintain a robust global supply chain to serve B2B customers across all major markets. Our inventory is strategically stocked to ensure fast dispatch and reliable delivery to industrial centers worldwide.

• Markets Served: North America (USA, Canada, Mexico), Europe (Germany, UK, Netherlands, Poland), Asia-Pacific (Australia, Japan, Singapore, Middle East), South America (Brazil, Chile), and Africa.
• Shipping Capabilities: We offer express (DHL, FedEx, UPS), air freight, and sea freight (FCL/LCL) options to major ports such as Los Angeles, Rotterdam, Shanghai, and Dubai.
• Export Experience: Our team handles all international trade documentation and customs compliance, ensuring smooth transactions for wholesale buyers, distributors, and repair shops globally.

Quality Assurance

• Manufacturing Standards: Produced in ISO-certified facilities following strict quality control protocols.
• Testing: Each batch is subject to dimensional inspection, hardness testing, and visual checks. Machinery Test Reports and Video Outgoing Inspections are available upon request.
• Warranty: All valves are backed by a 6-month warranty against manufacturing defects, providing peace of mind for bulk and wholesale purchases.
• OEM Service: We offer custom OEM manufacturing services for qualified buyers requiring specific branding or packaging.

FAQ

Q: How do I confirm that these valves (3802355/3802356) will fit my engine?
A: These valves are designed for Cummins B5.9 and 6D102 series engines. To confirm fitment, please check the part number stamped on your old valve or consult your engine’s service manual. Ensure the valve stem diameter, overall length, and head diameter match your existing components. We recommend verifying with your engine serial number for absolute certainty.

Q: What is the recommended installation procedure for these valves?
A: Installation should be performed by a qualified diesel mechanic. Key steps include: 1) Cleaning the valve guides thoroughly. 2) Applying assembly lube to the valve stems. 3) Using a valve spring compressor to install the new valves, springs, and keepers. 4) Checking valve clearance (lash) after installation and adjusting to factory specifications. Always replace valve stem seals at the same time.

Q: How should I store these valves before installation?
A: Store the valves in a clean, dry environment at room temperature. Keep them in their original packaging to prevent contamination or corrosion. Avoid exposure to moisture or extreme temperature fluctuations. If storing long-term, lightly coat the valve stems with anti-rust oil.