Caliso BD8997-01 Rear Floating Brake Drum

The Caliso BD8997-01 is a rear floating brake drum engineered as a direct-fit replacement for heavy-duty GM-platform vehicles. Constructed from grey cast iron with a fully cast, floating-style design, this drum delivers the structural integrity and heat management needed for dependable stopping performance under demanding conditions.

Key Features:

• Floating drum design for proper thermal expansion and reduced warping
• Grey cast iron construction engineered to OE metallurgical standards for consistent strength and durability
• Precision-machined friction and non-friction surfaces for accurate fitment and smooth brake shoe contact
• Hub-centric design with precise hub hole chamfer for a secure, centered fit
• 8-bolt mounting pattern with a 165.1mm (6.5") bolt circle diameter
• Nominal drum diameter: 330.2mm (13.0"); Maximum diameter: 332.49mm (13.09")
• Brake surface width: approximately 102mm (4.02")
• Overall height: 193mm (7.60")
• Cross-references: Raybestos 2591, OE# 15635951

The BD8997-01 suffix designates a completely machined and drilled drum produced in a single drilling operation, ensuring installation-ready precision right out of the box. This brake drum is sold individually.