Description
Product Overview
The Scat Crankshaft model 9-340-4000-6123 is a premium, machined steel engine component designed for high‑performance applications. Weighing 56.8 pounds, this crankshaft offers exceptional strength and balance, ensuring smooth power delivery and reduced vibration. Crafted from high‑grade alloy steel, it undergoes rigorous heat‑treatment and precision machining to meet exacting OEM specifications. The exterior finish is fully machined, providing a clean, professional appearance and optimal fit within the engine block.
Usage

This crankshaft is ideal for performance‑oriented builds, including race cars, track day vehicles, and high‑output street engines. It fits a range of Scat‑compatible engine blocks and is suitable for both rebuilds and new installations. Mechanics and enthusiasts seeking reliable power transmission will appreciate its durability under extreme RPMs and heavy loads. Proper installation with matching bearings and lubrication is essential for optimal performance.
Why Choose Us
Choosing the Scat Crankshaft means selecting a component backed by decades of engineering expertise. Scat’s reputation for quality control ensures each crankshaft passes stringent testing for dimensional accuracy and material integrity. Our supply chain guarantees genuine parts, and we provide comprehensive technical support for installation and maintenance, giving you confidence in long‑term engine reliability.
Key Features
- Precision‑machined high‑grade steel for superior strength and durability
- Weight of 56.8 lb delivers optimal balance and reduced engine vibration
- OEM‑approved dimensions ensure perfect fit for Scat‑compatible engines
- Heat‑treated for enhanced wear resistance under high RPM conditions
- Comes with manufacturer part number 9-340-4000-6123 for easy identification
FAQ
What engines are compatible with this crankshaft?
The Scat 9-340-4000-6123 crankshaft is designed for Scat‑compatible V8 and V6 engine blocks that require a machined steel crankshaft of the specified dimensions.
Do I need new bearings when installing this crankshaft?
Yes, it is recommended to use new, high‑quality bearings that match the crankshaft specifications to ensure proper clearance and longevity.
How does the weight affect engine performance?
The 56.8 lb weight provides a balanced rotating assembly, reducing harmonic vibrations and allowing smoother power delivery, especially at high RPMs.
Is this crankshaft suitable for street‑legal vehicles?
Absolutely. While engineered for performance, it meets all necessary emissions and safety standards for street use when installed correctly.
What warranty does Scat offer on this crankshaft?
Scat provides a limited warranty covering manufacturing defects for a specified period; please refer to the product documentation for exact terms.




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