T04B91 Turbocharger 4N6859 7N4651 for Caterpillar 3304 3306 Engine Supercharger

Product Details

Product Overview

This high-quality T04B91 turbocharger is engineered as a direct replacement for the Caterpillar 3304 and 3306 diesel engines. It is commonly identified by OEM cross-reference numbers 4N6859 and 7N4651, ensuring compatibility with a wide range of heavy equipment. Designed to restore original engine performance, this supercharger unit is a critical component for maintaining power output and fuel efficiency in demanding industrial applications.

Manufactured to meet OEM size specifications, this turbocharger is suitable for various heavy machinery, including excavators, loaders, bulldozers, and trucks. While primarily designed for the 3306 engine model, it is also compatible with the 3304 series, making it a versatile replacement part for Caterpillar equipment operators worldwide.

Key Features & Benefits

• Direct OEM Fitment: Precisely engineered to match the dimensions and mounting specifications of the original Caterpillar turbocharger, ensuring a hassle-free installation.
• Enhanced Engine Performance: Restores lost horsepower and torque by providing the correct air-fuel mixture, improving combustion efficiency and overall engine responsiveness.
• Durable Construction: Built with high-grade materials to withstand extreme temperatures and rotational speeds, offering reliable performance under heavy load conditions.
• Fuel Efficiency: Optimizes air intake to reduce fuel consumption, lowering operational costs for fleet managers and equipment owners.
• Reduced Downtime: As a direct replacement part, this turbocharger minimizes machine downtime, allowing for quick repairs and return to service.
• Comprehensive Warranty: Backed by a 6-month warranty against manufacturing defects, providing peace of mind for your investment.

Technical Specifications

OEM Cross-Reference

This T04B91 turbocharger is a direct replacement for the following OEM part numbers:

• 4N6859 – Original Caterpillar turbocharger number
• 7N4651 – Alternative Caterpillar turbocharger number
• T04B91 – Common turbocharger core reference

Please verify your existing part number against this list to confirm compatibility before ordering.

Compatibility

This turbocharger is commonly used for the following Caterpillar engines and equipment:

• Engine Models: Caterpillar 3304, 3306 (Diesel)
• Vehicle/Equipment Applications: Forklift, Excavator, Truck, Loader, Bulldozer, Bus and other heavy machinery

Note: While this part is designed for the specified engine families, always verify the physical dimensions and mounting configuration of your existing unit to ensure a proper fit.

Global Supply & Distribution

We offer worldwide shipping capabilities to meet the needs of international B2B buyers. Our distribution network covers major markets including North America, Europe, Asia-Pacific, the Middle East, and Africa.

We provide fast delivery to major ports and industrial centers, with flexible logistics options to suit your project timelines. Whether you are a maintenance shop in the Middle East or a heavy equipment dealer in North America, we can ensure timely and reliable delivery.

With extensive export experience and compliance with international trade standards, we are a trusted partner for businesses seeking quality aftermarket parts.

Quality Assurance

Every T04B91 turbocharger undergoes rigorous testing to ensure it meets performance and durability standards. Our quality assurance process includes:

• Machinery Test Report: Provided to verify operational integrity
• Video Outgoing Inspection: Available to confirm product condition before shipping
• Manufacturing Standards: Produced in a facility adhering to ISO-comparable quality control processes
• Warranty: 6-month coverage against manufacturing defects, providing confidence in your purchase

We prioritize quality to minimize the risk of premature failure and ensure reliable performance in the field.

FAQ

Q1: How can I confirm this T04B91 turbocharger will fit my Caterpillar 3306 engine?
A: We recommend comparing your existing turbocharger part number to the OEM cross-references provided (4N6859, 7N4651). Additionally, check the physical dimensions, mounting flange, and oil/coolant line connections against the specifications of this unit. If your part number matches one of the listed OEM numbers, it is highly likely to be a direct fit.

Q2: What is the recommended installation procedure for this turbocharger?
A: Installation should be performed by a qualified diesel mechanic. Key steps include: cleaning all oil supply and return lines, replacing all gaskets and seals, pre-lubricating the turbocharger bearing housing with clean engine oil before startup, and ensuring proper torque specifications are applied to all mounting bolts. After installation, run the engine at idle for a few minutes to check for leaks and proper oil flow before operating under load.

Q3: What maintenance is required to ensure a long service life for this turbocharger?
A: Regular maintenance is crucial. Ensure the engine air filter is clean and properly sealed to prevent debris from entering the turbo. Change the engine oil and filter at the manufacturer’s recommended intervals, as contaminated oil can damage the turbo bearings. Allow the engine to idle for 2-3 minutes before shutdown to let the turbo cool down and prevent oil coking. Regularly inspect the turbo for any unusual noises, oil leaks, or shaft play.