6BD1T Crankshaft Rear Sleeve 5-12319003-3 Isuzu Engine Parts Excavator Forklift Truck

Product Details

Product Overview

This high-precision Crankshaft Rear Sleeve, identified by part number 5-12319003-3, is a critical component engineered for the Isuzu 6BD1T diesel engine. As the interface between the crankshaft and the rear oil seal, this sleeve ensures a leak-free seal and protects the crankshaft from wear, maintaining proper oil pressure and engine integrity.

Sourced from, a trusted brand in Guangdong, China, this component is manufactured to OEM specifications. It is commonly used in heavy-duty applications such as excavators, forklifts, trucks, loaders, and bulldozers that rely on the robust 6BD1T engine platform. Designed as a direct replacement, it offers a reliable solution for engine rebuilds and maintenance.

Key Features & Benefits

• OEM Specification Fitment: Manufactured to exact OEM dimensions (Part No. 5-12319003-3) to ensure a precise, secure fit on the 6BD1T crankshaft, eliminating installation guesswork.
• Durable Wear Protection: Acts as a sacrificial surface, preventing direct wear on the more expensive crankshaft journal, thereby extending the life of the crankshaft during operation.
• Superior Oil Seal Surface: The sleeve provides a smooth, hardened surface for the rear main oil seal to ride against, significantly reducing the risk of oil leaks and maintaining engine lubrication.
• Rigorous Quality Testing: Each unit undergoes outgoing inspection, and a machinery test report is provided to verify dimensional accuracy and material integrity.
• Versatile Heavy-Duty Application: Suitable for a wide range of construction and industrial machinery (excavators, loaders, forklifts) and commercial vehicles (buses, trucks) powered by the Isuzu 6BD1T engine.
• 6-Month Warranty: Backed by a 6-month warranty against manufacturing defects, providing peace of mind for your engine rebuild project.

Technical Specifications

OEM Cross-Reference

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

• Isuzu OEM: 5-12319003-3
• Alternative Reference: 5-12319003-2 (Check compatibility for specific engine serial numbers)

Note: Always verify your existing part number against 5-12319003-3 to confirm compatibility before purchase.

Compatibility

This crankshaft rear sleeve is specifically designed for the Isuzu 6BD1T diesel engine. It is commonly used for maintenance and repair of the following equipment types:

• Excavators (e.g., Hitachi EX120, Sumitomo SH100)
• Forklifts (e.g., TCM, Nissan, Komatsu models with 6BD1T)
• Wheel Loaders
• Bulldozers
• Trucks & Buses
• Industrial Generators & Pumps

Note: Fitment is inferred based on the engine model. Please confirm the specific engine application in your vehicle or machine.

Global Supply & Distribution

leverages a robust supply chain based in Guangdong, China, to serve the global B2B market. We offer reliable worldwide shipping to major industrial hubs, including:

• North America: Los Angeles, Houston, Chicago, Toronto
• Europe: Rotterdam, Hamburg, Antwerp, Felixstowe
• Asia-Pacific: Singapore, Dubai, Sydney, Shanghai
• Middle East & Africa: Jebel Ali, Jeddah, Durban

We provide fast delivery via sea and air freight, with experience in international trade documentation and customs clearance. Bulk orders and drop-shipping arrangements are welcome for distributors and repair shops.

Quality Assurance

• Manufacturing Standards: Produced in ISO-compliant facilities with strict quality control measures.
• Testing: Each batch undergoes dimensional checks and a machinery test report is provided to validate performance.
• Inspection: Video outgoing inspection is available upon request to verify product condition before shipping.
• Warranty: This product carries a 6-month warranty against manufacturing defects, covering material and workmanship issues under normal use.

FAQ

Q: How do I know if this crankshaft rear sleeve (5-12319003-3) fits my engine?

A: This sleeve is specifically designed for the Isuzu 6BD1T engine. To confirm fitment, check the part number on your old sleeve. If it matches 5-12319003-3 (or a direct cross-reference like 5-12319003-2), it is the correct part. We also recommend verifying your engine serial number to ensure compatibility, as there may be variations in engine manufacturing years.

Q: What is the correct installation procedure for this sleeve?

A: Installation requires precision to avoid damaging the new sleeve or the engine block. First, thoroughly clean the crankshaft journal surface. Apply a thin layer of anaerobic sealant or Loctite to the inside of the new sleeve. Use a proper sleeve driver or a press tool to install the sleeve evenly until it is flush with the crankshaft counterweight. Always replace the rear main oil seal at the same time. Refer to the Isuzu 6BD1T service manual for specific torque and depth specifications.

Q: What maintenance should I perform after installing a new rear sleeve?

A: After installation, check the rear main seal area for leaks during the first few hours of operation. Monitor engine oil pressure and level. During subsequent oil changes, inspect the area around the flywheel and bell housing for any signs of oil seepage. The sleeve itself requires no maintenance, but ensuring the engine oil is clean and changed at recommended intervals will protect the seal and sleeve from premature wear.