Engines and Components› Crankshafts and Components

Eagle Specialty Products

Cast Steel Crankshaft, 3.580-Inch Stroke, 2-Piece Rear Main Seal

$428.99

SKU: EAG103603580

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

The Eagle Specialty Products 103603580 is a cast steel crankshaft designed for internal engine balance. It features a 3.580-inch stroke and a 2-piece rear main seal.
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The Eagle Specialty Products 103603580 is a cast steel crankshaft that offers a dependable and cost-effective solution for engine builds. Each crankshaft is thoroughly inspected to ensure accuracy in dimensions, size, and stroke. For enhanced efficiency and reliability, it features a journal finish of 6 R.A. or less and a target bob weight of +/- 2 percent, which aids in easy balancing. This crankshaft has a 3.580-inch stroke and is internally balanced, utilizing a 2-piece rear main seal style. It is constructed from cast steel, with main journal diameters of 2.810 inches and rod journal diameters of 2.125 inches. The snout style is standard. It is important to note that this crankshaft requires bearings, which are not included, and it does not require narrow bearings. This component is sold individually. This crankshaft is recommended as a great upgrade for naturally aspirated 500+/- horsepower street or street/strip engines. It is designed to handle up to 500 HP and is not intended for use with power adders. When used within its power rating, it provides a reliable and durable component for your engine.

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 NumberEAG103603580
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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