Engines and Components› Engines, Blocks and Components

Chevrolet Performance

4.065" Bore Cast Aluminum Engine Block

$3,950.00

SKU: 12623969

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Special Order
Ships in 4–6 weeks
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$100 Minimum Order
30 Days Return
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Overview

The Chevrolet Performance 12623969 is a bare engine block designed for performance applications. This cast-aluminum block features iron sleeves and a 4.065" bore.

It is a production component with 6-bolt main bearing caps.
Show original supplier description
The Chevrolet Performance 12623969 is a bare engine block that serves as a durable foundation for high-performance engine builds. This production cast-aluminum block is engineered with iron sleeves to ensure robustness and longevity under demanding conditions. Key specifications include a finished bore of 4.065" and 6-bolt main bearing caps, designed to support significant power outputs. This block is a direct replacement for the 2009-2012 Corvette ZR1 6.2L supercharged engine, providing an authentic component for restoration or custom builds. It is important to note that this part has been discontinued. Customers seeking this specific block are advised to call for alternative options.

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

BrandChevrolet Performance
Part Number12623969
CategoryEngines and Components
5,000+ Trusted brands
1M+ Enthusiasts
5M+ Parts sold
(760) 282-4645 hello@motormia.co

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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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