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Engines and Components› Crankshafts and Components

Eagle Specialty Products

Forged 4340 Steel Crankshaft

$1,050.99 $897.97 Save $153.02

SKU: EAG440040006000

In Stock
In Stock
Ships by Sep 9
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
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Overview

The Eagle Specialty Products EAG440040006000 is a forged 4340 steel crankshaft designed for Chevrolet 400 SBC engines. It features a non-twist forging and .125" fillet radiuses for superior strength, requiring chamfered or narrowed bearings. The crankshaft also has a nitrided surface and is micropolished, intended for demanding applications.
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The Eagle Specialty Products EAG440040006000 is a robust, forged 4340 steel crankshaft engineered for Chevrolet 400 SBC engines. This component is built for high-performance and demanding applications, featuring a non-twist forging process that enhances its structural integrity. The crankshaft includes .125" fillet radiuses, which contribute to superior strength but necessitate the use of chamfered or narrowed bearings. Furthermore, it boasts a nitrided surface treatment and a micropolished finish for improved durability and performance. Eagle Specialty Products is a prominent global supplier of engine internal components for the automotive performance market. They were among the first manufacturers to expand their offerings across diverse automotive markets, including Ford, Chrysler, Pontiac, Honda, Nissan, and Toyota, and continue to innovate and adapt to the evolving automotive landscape.

Product descriptions are provided by our supplier partners and may not always be perfectly accurate. Not sure this fits? or call (760) 282-4645 and we’ll verify before you order.

Fitment

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Specifications

BrandEagle Specialty Products
Part NumberEAG440040006000
CategoryEngines and Components

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Returns & Fitment

Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.

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Shipping

Orders are processed in 1–3 business days. In stock parts ship promptly from our partner network. Special-order items either aren’t currently stocked or are built to your spec — expect 4–6 weeks. If a part goes on backorder while your order is in the queue, we’ll reach out and work through discounted alternatives together.

Free shipping over $200 in the continental US. Alaska, Hawaii, U.S. territories (Puerto Rico, U.S. Virgin Islands, Guam, American Samoa, and the Northern Mariana Islands), and international orders carry surcharges — most appear at checkout. Some exceptions (LTL freight, or suppliers who quote freight only after we place the order) won’t. In those cases we’ll reach out with the exact charge before your order moves forward.

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