Engines and Components› Crankshafts and Components

GM

Crankshaft Assembly

$4,129.80

SKU: 12680206

In Stock
In Stock
Ships by Sep 12
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$100 Minimum Order
30 Days Return
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Overview

The GM 12680206 Crankshaft Assembly is a new, direct replacement part manufactured by General Motors. This crankshaft is designed to replace part numbers 12635333 and 12641925.

With dimensions of 32.2 x 10.9 x 9.1 inches and weighing 85.00 pounds, this genuine GM part is guaranteed by GM's factory warranty.
Show original supplier description
The GM 12680206 Crankshaft Assembly is a new, direct replacement part manufactured by General Motors, designed to ensure reliability and performance. This genuine GM part is built to the exact specifications of your original component and is guaranteed by GM's factory warranty, offering peace of mind. This crankshaft assembly replaces part numbers 12635333 and 12641925. It measures 32.2 inches in length, 10.9 inches in width, and 9.1 inches in height, with a total weight of 85.00 pounds. This crankshaft is compatible with the following vehicles: * 2010-2016 Chevrolet Express with the 8 Cyl 6.6L Diesel engine. * 2011-2016 Chevrolet Silverado with the 8 Cyl 6.6L Diesel engine, including various 2500 and 3500 configurations (e.g., CREW CAB, REGULAR CAB, DOUBLE CAB). * 2010-2016 GMC Savana with the 8 Cyl 6.6L Diesel engine. * 2011-2016 GMC Sierra with the 8 Cyl 6.6L Diesel engine, including various 2500 and 3500 configurations (e.g., CREW CAB, REGULAR CAB, DOUBLE CAB, EXTENDED CAB). Installation and repair tips provided by the manufacturer include cleaning and installing lower bearing inserts properly, and measuring crankshaft endplay using a dial indicator. The crankshaft is confirmed to come already balanced.

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

BrandGM
Part Number12680206
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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