SD DRUM 16.5 X 8.625 BALANCED BOLT CI

Name: WBB78500B - SD DRUM 16.5 X 8.625 BALANCED BOLT CI
Brand: Webb Wheel Products
SKU: WBB78500B
Price: 384.56 USD
Availability: InStock

This is a severe-duty cast iron brake drum designed for heavy-duty truck and trailer axles. It measures 16.5 inches in diameter by 8.625 inches wide and is an outboard-mounted, balanced drum. This part is a critical wear component in the foundation brake system, providing the friction surface for the brake shoes; it is typically replaced when it reaches its wear limit, develops hot spots, or cracks, to ensure safe and reliable braking performance.

$384.56

Free Pickup Ships nationwide (3–7 days) 30-Day Returns Secure Checkout

Verified fitment

Peterbilt and other heavy-duty trucks using 16.5x8.625 outboard mount brake drums
Found in some Peterbilt applications as OEM part 78500B

The part cross-references to the Peterbilt 78500B drum. This is an outboard mount drum, which must be matched to the specific hub and brake system configuration. Always verify exact dimensions (diameter, width, bolt pattern, pilot diameter) against the existing drum before installation.

Specifications

SKUWBB78500BBrandWebb Wheel ProductsSupplierPost OnsiteCategoryBrakes & Wheel EndAvailabilityIn StockDiameter16.5 inWidth8.625 inMount TypeOutboardMaterialCast IronTypeBalancedDuty RatingSevere Duty