High-tensile 4946152 Cummins 6LT 8.9L cylinder block. Alloyed gray iron casting ensures deck rigidity and prevents bore distortion in Dongfeng Kinland trucks and Sany SY365 excavators. Precision-honed for peak compression. Global shipping. Request quote!

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Quick Summary: Cummins 6LT 8.9L Cylinder Block

The Cummins 6LT 8.9L cylinder block (OEM: 4946152) is a high-strength casting engineered for heavy-duty industrial endurance.
It prevents deck warping and fits equipment including Dongfeng Kinland trucks, Liugong CLG856 loaders, and Sany SY365 excavators.
In stock for immediate global dispatch.

Cummins 6LT Cylinder Block

Built on the Cummins performance heritage, the Ruich Value aftermarket Cummins 6LT cylinder block is the definitive choice for rebuilding L-series engines. Manufactured with high-strength cast iron and leveraging precision engineering, this block ensures maximum durability and longevity under heavy loads. It serves as a direct aftermarket replacement for OEM part number 4946152, guaranteeing correct fitment and restoring original performance. Ideal for fleet maintenance managers and rebuilders, this cylinder block provides the reliability needed for vocational trucks, transit buses, and other demanding commercial applications, minimizing downtime and extending service life.

Engineering Specifications for Cummins 6LT 8.9L Cylinder Block

Specification Value
Product Type Cylinder Block (Bare)
Material Grade HT300 Alloyed Gray Iron
Machining CNC Precision Boring & Honing
Dimensional Tolerance Main Bearing Bore +/- 0.005mm
Cylinder Liner Type Wet/Dry Liner Compatibility
Pressure Tested 100% Hydraulic & Water Jacket Tested (8.0 Bar)
Surface Finish Mirror Ground Deck Face
OEM Reference 4946152
Cross Reference 5260124, 4939518, 4929518
Typical Applications Dongfeng Kinland, Liugong CLG856, Sany SY365, Marine Gensets
Application Category Heavy Logistics, Construction & Mining Machinery

Compatible Engine Models and Applications

Engine Model Application Field Typical Equipment Brands & Models
L10 / 6LT Heavy & Medium-Duty Trucks Peterbilt, Freightliner, International, Ford L-Series
ISL / L9 Transit & School Buses Gillig, New Flyer, Blue Bird, Thomas Built Buses
L-Series Vocational & Refuse Trucks Crane Carrier, Autocar, Mack TerraPro
L-Series Off-Highway & Construction Various excavators, cranes, and material handlers

Why Choose Ruich Value?

  • Engineered for Durability: Our cylinder blocks are built to withstand the toughest conditions, reflecting Cummins’ own standard for durability.
  • Heritage of Performance: Trust in a replacement part that honors the Cummins performance heritage, delivering power and reliability.
  • Precision Fitment: Meticulous precision engineering guarantees our blocks match OEM specifications for a seamless installation.
  • Wholesale Advantage: We provide Cummins construction equipment cylinder block wholesale solutions with competitive pricing for bulk orders.
  • Reduced Downtime: A reliable, in-stock engine block solution means getting your vehicles back in service faster.

Cummins Cylinder Block Range

Ruich Value supplies a dedicated range of Cummins cylinder blocks, including high-quality cast iron replacements. Our catalog covers key engine families such as the L-Series (6LT, L10, ISL), C-Series, B-Series, and ISX models as below. For a complete cross-reference of our Cummins 6LT cylinder block and other models, please contact our sales team with your OEM part number.

ModelModelModelModel
4B/4BTISL/QSL9.3/6LT-9.3ISGISX/QSX15
6B/6BT/6D102QSC8.3ISLEISC
6C/6CT
(single thermostat)

X15K19ISDE4.5
6CT
(double thermostat)
NT855ISF2.8ISDE6.7
6L/6LTISM11ISF3.8ISB6 E3
ISB4.5ISB6.7QSB3.3

Technical Q&A: Cummins 6LT 8.9L Cylinder Block

Q1: What causes main bearing web cracking in the 6LT engine block?

A1: Symptom: Irregular crankshaft rotation, knocking noise, and low oil pressure. Diagnosis: In 8.9L engines subjected to constant high torque, the main bearing webs can fatigue if vibration dampening is neglected. Solution: Our 4946152 blocks use alloyed HT300 iron with enhanced chromium content, which significantly increases structural rigidity to absorb the high firing loads of heavy-duty excavators.

Q2: What is the most critical check for the 4946152 cylinder block installation?

A2: Technical Detail: Always verify that the block deck and cylinder head mating surfaces are perfectly clean. Pro-Tip: Use a precision straight-edge to confirm deck flatness; even a 0.05mm warp can cause the head gasket to leak prematurely, leading to coolant intrusion and internal block corrosion.

Q3: Why is high-strength alloyed iron mandatory for this 8.9L block?

A3: Diagnosis: Heavy construction equipment (e.g., Sany SY365) requires the engine to run at full power for the majority of the duty cycle. Our Solution: The HT300 alloyed iron provides superior thermal stability, meaning the block expands and contracts uniformly under heat, ensuring the cylinder bores stay perfectly round and preventing the compression blow-by that plagues lower-grade cast iron blocks.

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