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Brakes› Brake Systems And Components

ACDelco

Rear Brake Drum

$264.12 $116.99 Save $147.13

SKU: 18B555

Special Order
Free Shipping over $200
$100 Minimum Order
30 Days Return
INSTALL DIFFICULTY
DIY PRO SHOP

Easy — 1–2 hours

Overview

The ACDelco Professional 18B555 is a rear brake drum designed for premium performance. It features a cast iron construction with a coated finish for corrosion prevention and reduced wear. This brake drum offers precise fitment with precision sizing, improved curvature, and exact dimensions.

This brake drum is built with an improved design over OE specifications, tested for daily commutes and excessive weather resistance. It is treated at OEM specifications to ensure quality and longevity. The ACDelco Professional brake drum is a direct replacement part for various GM and non-GM vehicles.
Show original supplier description
The ACDelco Professional 18B555 rear brake drum is engineered to deliver reliable braking performance and durability. Constructed from cast iron, this brake drum features a coated finish that provides essential corrosion prevention and helps reduce wear. The "Spirited Driver" profile suggests it's built for demanding use, while "Precise Fit" highlights its exact sizing, improved curvature, and precise dimensions for seamless installation and optimal function. The design has been improved over OE specifications, ensuring it's tested for daily commutes and capable of resisting excessive weather conditions. Further enhancing its longevity, the brake drum is treated at OEM specifications. This process ensures consistent performance and durability. ACDelco, a brand owned by General Motors, offers both factory parts for GM vehicles and aftermarket parts for a wide range of non-GM applications, providing a trusted option for many vehicle owners.

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

Fitment Guaranteed

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Log your build in the MOTORMIA app and we’ll guarantee this part fits your exact setup — or your money back, return shipping covered.

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Specifications

BrandACDelco
Part Number18B555
CategoryBrakes
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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