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Sale

Ignitions and Electrical› Charging Systems

Alternator

Name: Alternator
Brand: GM
SKU: 12711770

$1,660.97 $950.59 Save $710.38

SKU: 12711770

Free Shipping over $200

$100 Minimum Order

Non-Returnable Item

DIY PRO SHOP

Moderate — 2–4 hours

Overview

It is engineered and tested to rigorous standards and backed by General Motors.

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The GM Genuine Part Cylinder Head with Valves, part number 12711770, is an OEM replacement designed, engineered, and tested to rigorous standards by General Motors. This cylinder head assembly is compatible with 8-cylinder engines in 4.8L, 5.3L, and 6.0L displacements. It replaces previous part numbers including 12582713, 12615355, 12629062, and 12629064. This cylinder head is specified for numerous Chevrolet and GMC vehicles from 2008 to 2020, including the Express 2500 and 3500, Savana 2500 and 3500, Silverado 2500 HD and 3500 HD, Sierra 2500 HD and 3500 HD, Suburban 3500 HD, and Caprice PPV. It is intended for 6.0L V8 engines, with specific notes indicating compatibility with Flex Fuel, Gas, and in some cases, CNG variants. Ensure your vehicle's engine configuration matches these specifications for proper fitment.

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

Brand	GM
Part Number	12711770
Category	Ignitions and Electrical

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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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