Air and Fuel› Intake Manifolds and Components

ACDelco

Intake Manifold Assembly

$363.63

SKU: 12580678

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Moderate — 2–4 hours

Overview

The GM 12580678 is a new, direct replacement intake manifold assembly manufactured by General Motors. It is designed for specific GM vehicles from the 2007-2008 model years.

This component serves as a critical part of the engine's fuel and air delivery system, ensuring proper air mixture for combustion.
Show original supplier description
The GM Genuine Parts 12580678 Intake Manifold Assembly is a direct replacement component engineered and tested to rigorous standards by General Motors. As an Original Equipment Manufacturer (OEM) part, it ensures precise fitment and optimal performance for compatible vehicles. Its construction and materials are built to meet the same high standards as the original part it replaces. Installation involves several steps, including disconnecting the battery, draining coolant, and carefully removing various hoses and electrical connectors attached to the manifold. The process requires attention to detail when cleaning gasket surfaces, installing new gaskets, and tightening mounting bolts to specified torque values to ensure a proper seal and prevent vacuum leaks. It is important to check for any leaks after installation. This manifold is specifically designed for a range of 2007-2008 Cadillac, Chevrolet, GMC, and Hummer models equipped with 6.0L or 6.2L V8 engines. Specific fitment details include particular chassis types (e.g., 1/2 TON, 3/4 TON, 1 TON) and body styles (e.g., CREW CAB, EXTENDED CAB, REGULAR CAB, SUV, PICKUP) as listed in the vehicle fitment table.

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

BrandACDelco
Part Number12580678
CategoryAir and Fuel

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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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