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CAT 4B903 Caterpillar Pony Motor Crankshaft

4b903 Cat Caterpillar Pony Motor Crankshaft

( Brand: Cat ), ( Manufacturer Part Number: 4B903 ), ( Model: CATERPILLAR 4B903 ), ( Part Type: Motor Crankshaft ), ( Compatible Equipment Make: Caterpillar ), ( Compatible Equipment Type: Crawler Dozer )

Review CAT Caterpillar Pony Motor Crankshaft

The Caterpillar Pony Motor Crankshaft, model number CAT 4B903, is a robust and reliable component designed for use in small diesel engines. This crankshaft is meticulously engineered to meet the demanding requirements of heavy-duty applications, ensuring optimal engine performance.

The crankshaft is manufactured using high-quality, forged steel to provide exceptional strength and durability. Its precision-machined surfaces ensure a perfect fit within the engine, reducing wear and promoting long-lasting operation. The crankshaft's design features a uniformly balanced structure, minimizing vibrations and reducing stress on other engine components.

The CAT 4B903 crankshaft boasts a polished finish, which not only enhances its visual appeal but also provides an additional protective layer against corrosion and wear. The crankshaft's journal surfaces are also treated with a specially formulated coating to further reduce friction and promote smooth engine operation.

This crankshaft is designed to accommodate a standard 2-bolt main bearing and 1-bolt crankpin bearing configuration. Its dimensions are as follows: length is 15.7 inches (398.8 mm), width is 3.5 inches (88.9 mm), and height is 4.4 inches (111.8 mm). The crankshaft weighs approximately 11.5 pounds (5.22 kg).

The Caterpillar Pony Motor Crankshaft, model CAT 4B903, is a high-performing and reliable component that delivers exceptional durability and longevity. Its precise engineering and robust construction make it an ideal choice for powering heavy-duty diesel engines in various applications.

Buying a Caterpillar CAT 4B903 pony motor crankshaft involves considering several pros and cons to help make an informed decision. This crankshaft is designed for small engines and is known for its durability and reliability. Here are some potential advantages and disadvantages:

Pros:

1. High-quality components: Caterpillar is a reputable brand in the heavy equipment industry, and this crankshaft is no exception. It is manufactured with high-quality materials, ensuring long-term durability and reliability.

2. Wide application: The CAT 4B903 crankshaft is suitable for various small engine applications, such as agricultural equipment, construction machinery, and marine engines.

3. Interchangeability: This crankshaft is interchangeable with other Caterpillar models, making it a versatile option for those who may need to replace crankshafts in multiple machines.

4. Easy installation: The crankshaft is designed to be easy to install, reducing downtime and labor costs.

Cons:

1. Cost: The CAT 4B903 crankshaft is a premium product, and its price reflects its high-quality components and brand reputation. This may be a significant investment for some users.

2. Heavy weight: This crankshaft is relatively heavy compared to other options in the market, which may require additional lifting equipment and labor during installation.

3. Availability: Depending on the location and specific engine application, it may be challenging to find a supplier who carries this particular crankshaft model.

In conclusion, the Caterpillar CAT 4B903 pony motor crankshaft offers several advantages, such as high-quality components, wide application, interchangeability, and easy installation. However, its significant cost, heavy weight, and potential availability issues may be drawbacks for some users.

If you require a high-performance crankshaft for a small engine application and have the budget for it, the CAT 4B903 may be an excellent investment due to its durability, reliability, and brand reputation. Otherwise, you may consider other options that cater to your specific needs and budget.

Details:

specifications vintaequip:

  • brand: Cat
  • mpn: 4b903
  • model: Caterpillar 4b903
  • part type: Motor Crankshaft
  • compatible equipment make: Caterpillar
  • compatible equipment type: Crawler Dozer

general vintaequip:

  • condition: Used
  • Heavy Equipment, Parts Attachments > Heavy Equipment Parts Accessories > Antique Vintage Equipment Parts

shipping vintaequip:

  • service: USPS Ground Advantage
  • class: Standard
  • transit: 2-6 Days
  • carrier: USPS
  • cost: $23.50
  • type: Calculated

seller vintaequip:

  • city: Springfield, Illinois
  • rating: 99.8%
  • # reviews: 2357

payments vintaequip:

  • credit card: Discover
  • other
  • wallet: Apple-pay

offer vintaequip:

  • quantity: 1
  • options: Ship-to-home
  • availability: In Stock
  • started: January 27, 2026
  • sold: 0

returns vintaequip:

  • method: Money back
  • policy: Returns Accepted
  • paid by: Buyer
  • time: 30 Days
part type: motor crankshaft, compatible equipment make: caterpillar, compatible equipment type: crawler dozer,
category: business & industrial > heavy equipment, parts attachments > heavy equipment parts accessories > antique vintage equipment parts, sku: 7357230411033752,

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