Crankshafts For Caterpillar CAT Engine S4K

Explore top-notch Caterpillar S4K engine crankshafts at Ruich Value. Forged steel or cast iron, heat-treated, OEM standard, and custom options. Order now!

Crankshaft For Caterpillar S4K Engine


The crankshaft is a vital component of the engine that converts the linear motion of the pistons into rotational motion. The crankshaft also drives the camshaft, oil pump, water pump, and other accessories. A high-quality crankshaft can improve the performance, durability, and fuel efficiency of the engine.

Ruich Value is a leading manufacturer and supplier of crankshafts for various engines, including Caterpillar S4K engine. We have more than 20 years of experience in producing and exporting crankshafts for different markets. We use advanced technology and equipment to ensure the accuracy, strength, and reliability of our products. Our crankshafts are made of either forged steel or cast iron, depending on the customer’s requirements and specifications.


  • Compatible with Caterpillar S4K engine
  • Made of forged steel or cast iron
  • Heat-treated and polished for optimal hardness and surface finish
  • Precisely machined and balanced for smooth operation and reduced vibration
  • Tested and inspected for quality and performance
  • OEM standard and custom-made available

Product Info

Item Specification
Engine Maker Caterpillar
Engine Model S4K
OEM No. 4W3989 4W3579
Stroke 100 mm
Material Forged steel or cast iron
Application Excavators, loaders, generators, etc.

Other Related Models

We also offer crankshafts for other Caterpillar engine models, such as:

Engine Model OEM No. Stroke Material
3306 4N7692 2W7458 6N3907 152 mm Forged steel or cast iron
3406 2W2585 1W6207 6I1453 165 mm Forged steel or cast iron
C7 C9 221-9358 221-9360 221-9361 127 mm Forged steel or cast iron
C13 C15 C18 221-9362 221-9363 221-9364 190 mm Forged steel or cast iron
C6.4 C6.6 C7.1 C9.3

C10 C12 C13 C15 C18 C27


Various OEM numbers available Various strokes available Forged steel or cast iron

we can also develop customized/billet crankshaft per your drawing or samples

Contact Us

If you are interested in our products or have any questions or suggestions, Please feel free to contact us, Our team is expecting to work with you soon


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