Cummins 6BT 12V 5.9L 3925400 Loaded Complete Reinforced New Cylinder Head Technical Specifications:

Fits: Cummins 6BT 5.9L engines

Displacement: 5.9L

Year range:  1989-1998

Engine type: Diesel

Cylinders: 6

Core Return Required

Product Information:

Introducing Heavy Duty Parts Companies reinforced, redesigned, and reinvigorated brand new cylinder head for the work horse of the industries the Cummins 6BT. Our cylinder head has been redesigned to address the common flaws of the 6BT head such as cylinder head cracking and pre-mature valve train failure. Our cylinder head is a heavy-duty aftermarket casting that is not only thicker internally in the crack prone areas of the head but also contains a higher nickel content in the cast iron casting. The cylinder head we offer comes fully assembled with valves, springs, retainers, valve locks, new high temp  viton valve stem seals and standard size cam bearings installed. Ready to install straight out of the box and bred to work. Out work the rest with Heavy Duty Parts best!

Cummins 6BT 12V 5.9L 3925400 Loaded Complete Reinforced New Cylinder Head

Product Overview

Upgrade your Cummins 6BT 12V 5.9L engine (1989-1998) with the high-performance Cummins 6BT 12V 3925400 Loaded Complete Reinforced New Cylinder Head. Engineered to eliminate common issues like cylinder head cracking and premature valve train failure, this cylinder head is the ultimate solution for reliability and performance in heavy-duty applications.

Key Features

• Reinforced Construction: Features a thicker internal casting and a higher nickel content in the cast iron, providing exceptional strength and durability.
• Premium Components: Fully assembled with high-quality valves, springs, retainers, valve locks, high-temperature Viton valve stem seals, and standard size cam bearings.
• Ready to Install: Comes pre-assembled and ready for immediate installation, reducing downtime and ensuring optimal performance right out of the box.
• Core Return Required

Technical Specifications

• Compatibility: Fits Cummins 6BT 12V 5.9L engines from 1989 to 1998.
• Engine Type: Diesel
• Displacement: 5.9 liters.
• Cylinders: 6.

Benefits

• Enhanced Durability: Reinforced design significantly reduces the risk of cracking and other common failures.
• Improved Performance: Optimized for better airflow and combustion efficiency, leading to increased engine power and fuel economy.
• Reduced Downtime: The pre-assembled nature of this cylinder head minimizes installation time, ensuring quick and easy engine restoration.

Purchase Information

Invest in the reliability and performance of your Cummins 6BT engine with our high-quality cylinder head. For more details and to place your order, visit the product page.

Purchase and Shipping

We offer competitive pricing, and fast handling and shipping times. For more information on shipping times and costs, please visit our shipping policy page here: https://heavydutypartscompany.com/faq-2/.

Heavy Duty Parts Company – Core Returns Policy

At Heavy Duty Parts Company, core returns are essential to our ability to provide high-quality, cost-effective cylinder heads to our customers. These returned cores supply essential components, such as keepers, springs, and retainers, which are critical to engine performance.

No Core Charge – Just Send It Back!

Unlike other companies, we do not charge a core fee upfront. Instead, we rely on our customers to return their used cores to keep our supply chain running smoothly.

Why Core Returns Matter

• Many small but essential parts from cores are reused to maintain OEM-quality cylinder heads.
• Returning cores keeps prices competitive by reducing the need for costly new components.
• It supports sustainability by minimizing waste and conserving resources.

Send Back All Components

To ensure the quality and integrity of our remanufacturing process, we ask that you return all components that were originally included with your new cylinder head. This includes items such as:

• Rocker arms
• Camshafts (if applicable)
• Any other hardware that came with your purchase

Easy & Free Core Return Process

• Each purchase includes a prepaid core return label in a plastic sleeve on the box.
• Simply pack your core with all included components, attach the label, and drop it off with the carrier—no extra cost to you.
• Returned cores undergo inspection and recycling, ensuring maximum efficiency.

Customer Partnership & Sustainability

By returning your core and its components, you help maintain a reliable supply chain, ensuring we can continue offering top-quality products at the best prices. This process not only benefits your wallet but also contributes to a greener and more efficient automotive industry.

We appreciate your support in keeping our business and the industry running smoothly!

Additional Info

Check out Cummins Official Website here.