Caterpillar 3512B Engine Overhaul Kits

Heavy-Duty Power Backed by Proven Reliability

The Caterpillar 3512B is one of the most widely used large-bore diesel engines in the world, serving as a workhorse in industries where downtime is not an option. From powering offshore supply vessels and tugs to generating continuous electricity at remote job sites, the 3512B is known for its rugged design, exceptional torque output, and ability to handle long hours under extreme load conditions.

Despite its durability, every engine reaches a point where wear on pistons, liners, rings, and bearings begins to reduce efficiency. Loss of compression, increased oil consumption, and changes in fuel economy are common indicators that a rebuild is required. At that stage, a complete overhaul kit becomes the most reliable and cost-effective solution to restore the engine to peak operating standards.

Why the 3512B Requires Overhaul Kits

Unlike smaller engines where individual part replacements may temporarily solve issues, the 3512B’s high-horsepower applications demand comprehensive rebuilds to maintain performance and reliability. An overhaul kit ensures that all internal wear components are replaced together, providing:

• Balanced Engine Operation: New pistons, liners, and bearings working in harmony.

• Restored Compression: Proper combustion for full horsepower and torque output.

• Extended Service Life: OEM-spec components built to withstand heavy loads.

• Reduced Operating Costs: Improved fuel efficiency and less downtime.

By tackling all critical components at once, an overhaul kit prevents mismatched wear and avoids the risk of repeated breakdowns.

Complete Solutions from Diesel Pro Power

Diesel Pro Power has become a trusted source for Caterpillar 3512B overhaul kits, with more than 40,000 satisfied customers worldwide. Every kit is engineered to meet or exceed OEM standards, offering precise fitment and long-term durability.

What sets our kits apart:

• Arrangement-Specific Kits: Matched directly to Caterpillar arrangement numbers for guaranteed compatibility.

• Premium Materials: Components built with industry-leading metallurgy and precision machining.

• Fast Turnaround: Most orders ship within 24 hours to minimize downtime.

• Expert Support: Our team assists with confirming engine details, including crankshaft and connecting rod bearing sizes.

Why Choose a Caterpillar 3512B Overhaul Kit?

Instead of sourcing pistons, rings, liners, bearings, and gaskets separately, a complete overhaul kit saves time and ensures compatibility across all internal engine components. Key benefits include:

• Restored Performance: Return your 3512B to its original horsepower and efficiency.

• Guaranteed Fit: Kits matched to Caterpillar arrangement numbers and serial prefixes.

• Reduced Downtime: All parts are included in one package, ready to ship within 24 hours.

• Cost-Effective Solution: Lower overall rebuild cost compared to sourcing individual parts.

What’s Included in a 3512B Engine Overhaul Kit?

Depending on arrangement number, a typical 3512B rebuild kit includes:

• Pistons

• Piston pins & retainers

• Complete piston ring sets

• Cylinder liners with seals

• Connecting rod bearing shell sets

• Crankshaft main bearing shell sets

• Thrust washers

Some kits also include a complete gasket set, making reassembly seamless and leak-free.

Caterpillar 3512B Overhaul Kit Options

Premium Rebuild Kits for Caterpillar 3512B Engines

Several rebuild kit options are available depending on arrangement numbers and serial prefixes. These kits cover a wide range of 3512B applications and ensure precise compatibility.

Example coverage includes:

• Arrangement numbers such as 3857341, 4206011, 5795683, 5857971

• Serial number prefixes including S2J and S2N

• Engines configured for both industrial and marine duty cycles

Kit Component Details

Our premium kits provide the core internals needed for a full rebuild:

• Pistons & Rings: Restore compression and reduce oil consumption.

• Cylinder Liners & Seals: Ensure durability under high thermal load.

• Bearings & Washers: Protect crankshaft and connecting rods under extreme pressures.

• Gasket Sets (optional): Guarantee leak-free assembly across all joints and seals.

Bearing Size Customization

When ordering a 3512B overhaul kit, customers must confirm the correct bearing sizes. This step guarantees the kit matches your exact engine configuration.

1. Crankshaft bearings: Standard, 0.10, 0.20, 0.30

2. Connecting rod bearings: Standard, 0.10, 0.20, 0.30

Our team will contact you after purchase to collect this information so that your kit is shipped within 24 hours.

Applications of the Caterpillar 3512B Engine

The 3512B is engineered for some of the most demanding operations in the world. Our overhaul kits are critical for operators who rely on maximum uptime in:

• Marine Propulsion: Tugboats, offshore supply vessels, and workboats

• Power Generation: Continuous and standby power plants

• Oil & Gas: Drilling rigs, offshore platforms, and pumping operations

• Mining & Heavy Industry: Large haul trucks, shovels, and excavators

No matter the application, a properly rebuilt Caterpillar 3512B engine keeps operations running efficiently and reliably.

Why Buy 3512B Overhaul Kits from Diesel Pro Power?

When it comes to rebuilding a Caterpillar 3512B engine, selecting the right supplier is just as important as choosing the right parts. At Diesel Pro Power, we’ve built our reputation around delivering quality, speed, and expert support for customers who depend on heavy-duty engines to keep their operations running. Here’s why operators across marine, oil & gas, mining, and power generation industries trust us for their 3512B overhaul kits:

Fast Worldwide Shipping

Time is money, and downtime is costly. That’s why most of our 3512B overhaul kits ship within 24 hours of your order being confirmed. Whether you’re in the Gulf of Mexico, the Middle East, South America, or a remote mining operation, we specialize in delivering parts quickly and reliably. This means less waiting, faster rebuilds, and minimal disruption to your operations.

Trusted by Over 40,000 Customers Globally

With more than 40,000 satisfied customers worldwide, Diesel Pro Power is known as one of the most reliable suppliers in the industry. Our customer base spans commercial fleets, offshore drilling contractors, power plants, and mining companies—organizations that cannot afford equipment failure. This global trust has been earned through consistent performance, premium-quality parts, and unmatched customer service.

Arrangement-Specific Compatibility

Not all Caterpillar 3512B engines are built the same. With numerous arrangement numbers and specific serial prefixes in circulation, it’s critical to ensure the kit you buy will fit your exact configuration. Diesel Pro Power supplies arrangement-specific overhaul kits, matched to your engine’s build data. This guarantees a precise fit and eliminates costly mistakes during installation.

Expert Technical Guidance

Our service doesn’t stop at selling kits. The Diesel Pro Power team works directly with you to confirm crankshaft bearing sizes, connecting rod bearing dimensions, and other key engine specs before shipment. This level of support prevents compatibility issues, ensures you get the exact kit you need, and allows you to begin your rebuild with confidence.

The Diesel Pro Power Difference

Choosing Diesel Pro Power means you’re not just buying an overhaul kit—you’re investing in:

• Reliability: Every component meets or exceeds OEM standards.

• Convenience: Everything you need for a complete rebuild, in one package.

• Peace of Mind: A trusted partner who understands the 3512B inside and out.

When your equipment depends on a Caterpillar 3512B engine, trust Diesel Pro Power to provide the parts, expertise, and support that keep it running at full strength.

Maintenance Tips for a Successful 3512B Overhaul

• Verify Engine Arrangement Number: Always confirm before ordering.

• Check Bearing Sizes: Standard vs. undersized bearings must be known in advance.

• Replace All Gaskets: Prevent leaks by installing new seals during reassembly.

• Follow Service Intervals: After overhaul, maintain oil and coolant systems diligently to extend engine life.