The Cummins ISB and QSB engines are part of the B Series, known for their reliability, performance, and fuel efficiency. These engines serve a variety of on-road and off-road applications. Here’s an overview of each engine series:
ISB Engines (Interact System B Series)
- Primary Use: The ISB engines, including the 5.9L and 6.7L versions, are mainly used in on-road applications, especially in trucks. They are popular in 2nd—and 3rd-generation Dodge trucks.
- Power Range: The ISB 6.7L engine provides between 230 to 550 hp (171.51 – 410.13 kW) and 720 to 1250 lb-ft of torque (976.19 – 1694.77 N•m) depending on the application.
- Key Features:
- Common Rail Technology: The common rail system improves fuel efficiency and controls emissions.
- Electronic Controls: Fully computer-controlled systems optimize engine performance.
- On-road Trucks: Mainly used in pickup trucks, but also suitable for other on-road applications due to their performance and reliability.
QSB Engines (Quantum System B Series)
- Primary Use: The QSB series is typically found in off-road and industrial applications, such as agriculture, construction, and marine vessels. These engines are also used in other industrial equipment because of their power and efficiency.
- Power Range: The QSB 4-cylinder and 6-cylinder engines offer 110 to 275 hp (82.03 – 205.07 kW) and 305 to 730 lb-ft of torque (413.52 – 989.75 N•m), meeting the demands of heavy-duty industrial and agricultural equipment.
- Key Features:
- Charge Air Cooling and Turbocharging: These features provide strong performance, especially in challenging environments.
- Cold-Start Capability: Enhanced cold-start performance makes them ideal for outdoor and remote applications.
- Fuel System: The Bosch HPCR (High-Pressure Common Rail) fuel system ensures quieter operation and supports alternative fuels.
Both the ISB and QSB engines are known for their versatility, performance, and durable design, making them suitable for a wide range of applications from everyday vehicles to specialized machinery.
Volgen Powe Authorized Cummins Dealers: Buying from authorized Cummins dealers ensures genuine parts and compatibility. These dealers offer a wide range of cylinder heads designed specifically for your engine, reducing the chance of improper installation or damage.
Cummins cylinder head Compatibility
To find a cylinder head compatible with Cummins ISB and QSB 5.9L/6.7L engines, consider these factors to ensure the engine runs smoothly and lasts longer.
Key Compatibility Factors
- Engine Type
- Identify if the engine is a Cummins ISB (Interact System B) or QSB (Quantum System B) model. The 5.9L and 6.7L cylinder heads are designed for specific engine needs. Using the correct type prevents installation and performance issues.
- Matching Part Numbers
- Match the cylinder head part numbers to the engine’s requirements. Common part numbers include:
- 3967455
- 4897220
- 5258276
- 3977225
- OEM reference numbers, like CMCM4131 for 5.9L 24V engines and 4936081, 2831274, and 5364892, are also essential for verifying compatibility.
- Match the cylinder head part numbers to the engine’s requirements. Common part numbers include:
- Vehicle and Equipment Models
- Ensure the cylinder head suits the intended vehicle or equipment model. Cummins engines are widely used in brands like:
- Case IH, DAF, Hitachi, Hyster
- Hyundai, JCB, New Holland, Volvo
- Ensure the cylinder head suits the intended vehicle or equipment model. Cummins engines are widely used in brands like:
- Valve Configuration
- Confirm the cylinder head matches the engine’s valve setup. Most Cummins 5.9L and 6.7L engines use a 24-valve configuration, so alignment is crucial for proper function.
- Material and Construction
- Check that the cylinder head material and build meet Cummins standards. High-strength materials are essential for handling the engine’s power and torque.
- Compliance with Regulations
- Verify the cylinder head meets emissions and safety regulations. Cummins engines follow standards like U.S. EPA Tier 3 and international rules such as IACS and SOLAS.
- Consult Authorized Dealers or Reputable Suppliers
- Work with authorized Cummins dealers or trusted suppliers to ensure the cylinder head is genuine and suitable for your engine model.
- Inspect Photos and Documentation
- Review supplier-provided images and technical details to confirm the part meets your needs. If unsure, contact the supplier for more information.
Identifying Compatible Cummins ISB and QSB 5.9L/6.7L Cylinder Heads
To match compatible Cummins ISB and QSB 5.9L/6.7L cylinder heads, focus on part numbers, engine model, and year. Here’s a step-by-step guide:
Key Part Numbers and Compatibility
3967455: Works with Cummins 5.9L and 6.7L engines, often found in Dodge trucks and industrial machines. Confirm fitment using the engine’s VIN or model year.
4897220: Fits 5.9L and 6.7L engines. Cross-check with OEM numbers like 4936081 or 2831274. Common in equipment from Case IH, DAF, and JCB.
5258276: Typically for 6.7L Cummins ISB engines in Dodge trucks or heavy-duty applications. Verify using the VIN or parts catalog.
3977225: Suitable for various ISB and QSB engines, including industrial and marine types. Match with engine model and year for accuracy.
Steps to Verify Compatibility
Check Engine VIN or Block: Use the VIN or engine block to identify the model and year.
Use OEM Reference Numbers: Verify the cylinder head using OEM numbers like 4936081, 2831274, or 5364892.
Seek Expert Advice: Consult a Cummins professional or review the official parts catalog for precise information.
By carefully matching part numbers with your engine details, you can ensure the correct cylinder head for your Cummins ISB or QSB engine.
New vs. Remanufactured Cylinder Heads
Key factors in choosing between new and remanufactured Cummins ISB and QSB 5.9L/6.7L cylinder heads (part numbers: 3967455, 4897220, 5258276, 3977225) include cost, performance, and durability.
New Cylinder Heads
Reliable Performance: New cylinder heads match OEM standards, ensuring optimal engine function.
Warranty Coverage: They usually come with a 1–2 year manufacturer’s warranty for defect protection.
No Wear: As unused parts, they avoid risks of premature failure linked to prior use.
Up-to-date Design: New parts may feature the latest technology for better performance.
Price Range: Costs vary from $2,000 to $5,000 or more, depending on the engine and manufacturer.
Availability: Delivery times may be longer if stock is limited.
Remanufactured Cylinder Heads
Budget-Friendly: These typically cost $1,000 to $3,000, making them an economical choice.
Eco-Friendly: Using remanufactured parts helps reduce waste.
Faster Access: They are often in stock, minimizing downtime.
Warranty Options: Warranty periods range from 6 months to 1 year, with some high-quality units offering extended coverage.
Quality Variability: The quality depends on the remanufacturer and the original part’s condition.
Potential Issues: Previous use might affect their performance and lifespan.
Lifespan Considerations: While they may not last as long as new ones, reliable performance is possible with trusted suppliers.
Choosing Between New and Remanufactured
Buy from trusted suppliers to ensure compatibility and quality. Platforms like ATL Diesel and JSK Automotive provide detailed part numbers and compatibility guides to help you make the best decision.
Where to Find Compatible Cummins ISB and QSB Cylinder Heads
Click for Volgen Power dealers: Find genuine Cummins parts you can trust.
Verifying Compatibility with Your Engine
Always confirm that the cylinder head matches your engine’s specifications:
Match OEM Part Numbers: Check that the part number aligns with your engine’s OEM reference number. For example, for a Cummins 5.9L 24V ISB engine, use part numbers like 4936081, 2831274, or 5364892.
Review Product Details: Look at product photos and descriptions to verify the part meets your needs. If unsure, ask the seller for details.
Check Vehicle/Equipment Models: Ensure the cylinder head fits your engine model. For instance, the Cummins 5.9L 24V ISB cylinder head works with models like Case IH Maxxum 125, DAF CF 65, and JCB 414S.
Online Retailers and Specialized Companies
- JSK Automotive: Offers complete cylinder heads for Cummins 5.9L 24V ISB engines. Listings include detailed compatibility and OEM reference numbers to help you find the correct part.
- Volgen Power: Sells a variety of Cummins ISB parts, including cylinder heads. Their search tools let you locate components for 5.9L or 6.7L engines easily.
- Heavy Duty Parts Company: Though they may not list specific Cummins ISB or QSB cylinder heads, they stock many heavy-duty engine parts and may assist in sourcing what you need.
Additional Tips
Provide Your Engine Serial Number: When contacting sellers, share your engine’s serial number to ensure you get the right cylinder head.
Shipping and Return Policies: Look for retailers offering free shipping, global delivery, and return policies to safeguard your purchase if the part isn’t compatible.
Key Features to Consider When Buying Cylinder Heads
When buying cylinder heads for Cummins ISB and QSB 5.9L/6.7L engines, focus on these key features to ensure proper fit and performance.
Material and Construction
Cast Iron: The most common material for Cummins ISB and QSB cylinder heads. Cast iron is known for its strength, durability, and ability to handle the high compression and stress in diesel engines.
Durability: Cast iron heads are built to handle diesel engines’ intense pressures and temperatures, greatly extending engine life.
Heat Dissipation: Cast iron has excellent thermal properties, efficiently dissipating heat to prevent overheating and maintain peak performance.
Cost-Effectiveness: While aluminum heads have some benefits, cast iron provides a durable, affordable option, making it a popular choice for many engine owners.
Repairability: Cast iron is easier to repair and machine than aluminum, which can be more prone to damage and harder to fix.
Additional Considerations
Weight: Cast iron heads are heavier than aluminum, but this doesn’t significantly impact engine performance.
Corrosion Resistance: Cast iron is generally resistant to corrosion, but regular maintenance and protective coatings can further extend its lifespan.
Installation and Maintenance
Importance of Professional Installation
- Professional installation is crucial for Cummins ISB and QSB 5.9L/6.7L cylinder heads (3967455, 4897220, 5258276, 3977225). It helps prevent engine damage, ensures peak performance, and keeps your warranty intact.
- Incorrect installation can lead to issues like leaks, engine imbalance, or poor efficiency, which can result in expensive repairs.
Precision and Specialized Tools
- Certified mechanics use specialized tools to align parts correctly, apply the right torque, and seal properly. This ensures the cylinder head is installed to Cummins’s specifications.
- Using the correct tools and expertise reduces the risk of errors that might void the warranty.
Inspection and Preparation
- Inspection: The engine and surrounding parts are checked for wear or damage before installation.
- Cleaning and preparation: Surfaces are cleaned to ensure proper gasket sealing and to prevent contaminants from affecting performance.
Installation Process
- Removal of the old cylinder head: The worn cylinder head is removed, and the cause of the failure is documented to prevent future issues.
- Installation of the new cylinder head: Gaskets, seals, and bolts are placed correctly, following the torque specifications from the Cummins manual.
Testing and Adjustment
- After installation, a full engine test checks for leaks, misalignment, or performance issues.
- Any necessary adjustments are made to ensure the engine runs smoothly and meets emissions standards.
By following these steps and relying on certified mechanics, you can improve the durability and performance of your Cummins ISB or QSB engine.
Warranty and Return Policies
When buying Cummins ISB and QSB 5.9L/6.7L cylinder heads (3967455, 4897220, 5258276, 3977225), it’s important to understand the warranty and return options. Below is a clear overview of these policies:
Replacement and Warranty Coverage
Tamerx Diesel Products: Offers a warranty for defects in materials and workmanship. Specific details vary by product.
Blackwater Engines: Provides a 2-year unlimited mileage warranty for long blocks. Damage from improper installation, overheating, or poor maintenance is excluded. Accessories like oil pumps and oil coolers come with a 6-month warranty.
Cummins Remanufactured Engines: Comes with a 2-year / 100,000-mile warranty when purchased through Mopar®. This covers material and workmanship defects.
Return Policies and Money-Back Guarantees
JSK Automotive: Features a 30-day money-back guarantee on all products. Returns must start within 30 days, and items should be in their original condition. Some products also have a 14-day return window.
ATL Diesel: Allows returns within 30 days for Cummins ISB 5.9L / 6.7L cylinder heads. Items must be in their original state to qualify.
Key Considerations for Warranties
- Proper Installation: Damage caused by incorrect installation isn’t covered. Always use the right gaskets and sealants.
- Maintenance: Failing to perform regular maintenance can void warranties. Keep up with scheduled servicing.
- Storage and Use: Long-term improper storage (over six months) may void the warranty due to potential maintenance issues.
By carefully reviewing these warranty and return policies, you can confidently choose compatible Cummins cylinder heads and reduce potential risks.
Cost and Budget Considerations
When choosing a compatible Cummins ISB or QSB 5.9L/6.7L cylinder head, understanding costs is essential. Here are the key points to consider:
New Cylinder Heads
- New Cummins ISB and QSB 6.7L cylinder heads typically cost between $2,000 and $3,500.
- For example, a fully loaded Cummins ISB 6.7L 24-valve cylinder head costs about $2,895.00.
- Some suppliers offer financing, like monthly payments of $227.00 through AFFIRM, to ease upfront costs.
Remanufactured Cylinder Heads
Remanufactured cylinder heads are a budget-friendly alternative, priced at $1,000 to $2,500.
These heads meet or exceed OEM standards, offering reliable performance without the higher cost.
Installation Costs
Professional installation can add $500 to $1,500 to the total cost, depending on the mechanic or service shop.
Accessories and Additional Parts
Replacing a cylinder head may require extra parts like head gaskets or bolts, which increase the total expense.
Warranty and Return Policies
Many suppliers provide warranties and return options. For instance, some vendors offer a 30-day return policy, which adds assurance when purchasing.
Comparing Suppliers and Online Marketplaces
Prices vary significantly between suppliers, such as Industrial Injection, ATL Diesel, and CPP Diesel. Comparing options helps find the best deal.
Online platforms like Alibaba offer many choices, but it’s crucial to verify product quality and authenticity.
Financing Options
Several suppliers offer payment plans to spread costs over months, reducing the financial strain of the purchase.
Finding the right cylinder head for your Cummins ISB and QSB 5.9L/6.7L engines is crucial for maintaining engine performance and avoiding costly repairs. Here’s a simplified guide to help:
- Engine Model and Year: Confirm your engine model and year to ensure the cylinder head fits properly. Different Cummins ISB and QSB models have unique requirements.
- OEM Part Numbers: Verify part numbers like 3967455, 4897220, 5258276, and 3977225. Cross-checking these with OEM catalogs ensures you get the right part.
Resources for Finding the Right Cylinder Head:
Manufacturer Support: Contact Cummins or authorized dealers to confirm compatibility.
Expert Guidance: Reach out to specialists like Volgen Power for help selecting and purchasing the correct cylinder head.
By following these steps and using available resources, you can confidently find the right cylinder head and keep your engine running efficiently.