Caterpillar 3306 Cylinder Block 1N3576 (Cast Iron)

Uncompromising Durability : Caterpillar 3306 Block for Industrial Diesel Engine Parts

This Caterpillar 3306 Cylinder Block 1N3576 stands as a foundational component in our wholesale catalog, engineered to support the rigorous demands of heavy construction and mining logistics. Recognizing the critical nature of the 3306 platform in global infrastructure projects, we maintain consistent distributor stock to ensure immediate dispatch for fleet overhauls. Each unit is processed with export-ready preservation to guarantee it arrives at your workshop ready for assembly.

Designed to replace fatigued or cracked OEM castings, this 1N3576 block specifically targets the high-stress requirements of the Caterpillar 3306 Direct Injection (DI) series. It addresses common field failures such as main bearing bore misalignment and deck surface warping seen in high-hour machines like the D6D Dozer and 140G Motor Grader. By restoring structural integrity, this block ensures proper cylinder sealing and extended powertrain lifecycle.

Technical Specifications for 1N3576 Cast Iron Block

Technician’s Note: Assembly & Inspection

Critical Spacer Plate Check: The 3306 engine relies on a spacer plate system. When installing this new block, you must ensure the top deck is absolutely clean before installing the spacer plate and gasket. We recommend dry-fitting the liners first to verify the liner protrusion (projection) height is within spec. Incorrect projection is the #1 cause of head gasket failure on these engines.

Compatible Equipment for Caterpillar 3306

Why Source Industrial Diesel Engine Parts from Ruich Value?

• Leak Prevention: Every cylinder block undergoes a 100% water jacket pressure test to guarantee no porosity or casting defects, preventing expensive coolant leaks after assembly.
• Surface Precision: The deck surface is CNC milled to exact flatness tolerances, ensuring a perfect seal for the spacer plate and head gasket in high-compression diesel applications.
• Line Boring Accuracy: Main bearing bores are precision-machined and checked for alignment, allowing for standard bearing fitment without the need for additional machining.
• Inventory Power: As a popular legacy model, we keep 1N3576 blocks in ready stock to support urgent fleet breakdowns and faster capital turnover for distributors.
• Export Protection: Shipped in heavy-duty wooden crates with anti-rust oil protection, ensuring zero corrosion or transit damage even during long sea freight.

Complete Caterpillar Cylinder Block Catalog

Our catalog coverage extends far beyond the 3306, offering Industrial Diesel Engine Parts for the entire range of Caterpillar heavy-duty applications.

Category coverage: From compact C4.4 blocks to massive C15 and C18 ACERT castings, we provide reliable replacement cores for mining, construction, and power generation.

View all specs in our Caterpillar Industrial Cylinder Block Catalog.

Or explore our complete Caterpillar Industrial Diesel Engine Parts Catalog

Technical FAQ: Caterpillar 3306 Cylinder Block

Q1: Does the 1N3576 block come with main bearing caps?

Yes, all our cylinder blocks are supplied with matched main bearing caps and bolts. They are line-bored together at the factory to ensure perfect alignment. Do not mix caps from other blocks.

Q2: Is this block compatible with both Spacer Plate and Non-Spacer Plate engines?

The 1N3576 is typically designed for the “Spacer Plate” style 3306 engines (common in D6D/12G era). If you are working on a very early non-spacer plate 3306 (pre-combustion chamber style), please check your serial number with us first.

Q3: What warranty do you offer on casting integrity?

We provide a comprehensive warranty against casting defects, including cracks and porosity. Our pre-shipment pressure testing significantly eliminates these risks before the product leaves our facility.

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