Engines and Components› Crankshafts and Components

Eagle Specialty Products

4.250" Stroke Internally Balanced Cast Steel Crankshaft

$495.97

SKU: EAG104004250

In Stock
In Stock
Ships by Sep 9
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$100 Minimum Order
30 Days Return
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Overview

The Eagle Specialty Products 104004250 crankshaft is a cast steel upgrade from an O.E. crankshaft, recommended for pump-gas, naturally-aspirated, non-competition road cars. It features a 4.250-inch stroke and internal balance. The crankshaft is designed for Pontiac V8 engines and uses a 2-piece seal.

Eagle emphasizes its commitment to quality, using certified steel and employing multi-stage heat treating, sonic testing, magna-fluxing, and X-ray inspection to ensure reliability. The crankshaft includes .092-inch fillet radii for improved strength and O.E. style straight oiling passages.
Show original supplier description
The Eagle Specialty Products 104004250 is a cast steel crankshaft designed as an upgrade from original equipment. It is recommended for use in pump-gas, naturally-aspirated, non-competition road cars. Constructed from cast steel for improved strength over cast iron, this crankshaft features a 4.250-inch stroke and internal balance. It is specifically designed for Pontiac V8 engines and utilizes a 2-piece seal, with O.E. replacement bearings being compatible. The design incorporates .092-inch fillet radiuses for enhanced strength and O.E. style straight oiling passages. Eagle Specialty Products highlights its rigorous manufacturing process, including the use of certified steel, multi-stage heat treating, sonic testing, magna-fluxing, and X-ray inspection to guarantee a reliable product. The company offers a comprehensive selection of engine components and ensures that its crankshafts are thoroughly inspected and quality-controlled for demanding applications. Target bobweights are guaranteed within +/- 2% for predictable balancing.

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.

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Specifications

BrandEagle Specialty Products
Part NumberEAG104004250
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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