Engines and Components› Cylinder Heads and Components

ACDelco

Engine Cylinder Head Bolt

$7.88

SKU: 11588291

In Stock
In Stock
Ships by Sep 12
Free Shipping over $200
$100 Minimum Order
30 Days Return
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Overview

The ACDelco 11588291 is a Genuine GM Parts™ engine cylinder head bolt designed to deliver trouble-free, consistent performance. This bolt features a hex drive type, a 15 mm head tool size, and a black color finish.
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The ACDelco 11588291 is a Genuine GM Parts™ engine cylinder head bolt, engineered by GM to meet rigorous standards and ensure reliable performance. GM Engineers specifically design and validate these OE parts for Chevrolet, Buick, GMC, and Cadillac vehicles, ensuring they meet the exact specifications required for your vehicle. Constructed from durable steel with a Grade 10.9 rating, this cylinder head bolt offers superior strength and longevity. It features a hex drive type, a 15 mm head tool size, and a black finish. Key specifications include a thread diameter of 0.433 inches (11 mm) and a thread length of 2.335 inches (59.3 mm), with an overall length of 6.154 inches (156.3 mm). These dimensions are critical for ensuring a proper and secure fit within the engine assembly. ACDelco offers a comprehensive warranty on its OE and Professional lines, typically including a 24-Month/Unlimited Mile Limited Warranty for OE Engine Components. The Magnuson-Moss Warranty Act ensures that a vehicle manufacturer cannot void your vehicle's warranty due to an aftermarket part unless they can prove that the aftermarket part caused or contributed to the failure. This means that using this ACDelco cylinder head bolt should not, by itself, void your vehicle's warranty.

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 Number11588291
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.

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