3807A Balanced Brake Drum Replacement | 16.5" × 7" Heavy-Duty Brake Drum

Our 3807A Balanced Brake Drum is engineered to provide exceptional braking performance for heavy-duty commercial trucks. Manufactured from premium high-strength cast iron and precision balanced to reduce vibration, this brake drum delivers smooth braking, superior heat dissipation, and long-lasting durability in demanding fleet operations.

Designed as a direct replacement for OEM 3807A applications, this brake drum is precision machined to ensure consistent brake shoe contact, dependable stopping power, and extended brake system life. Its robust construction makes it ideal for fleets, repair shops, and owner-operators who demand reliable performance on every mile.

Features

• Precision balanced for smooth, vibration-free braking

• Premium high-strength cast iron construction

• Excellent heat dissipation helps reduce brake fade

• Precision-machined braking surface for consistent stopping performance

• Direct OEM replacement for easy installation

• Outboard mounting design for simplified brake service

• Built for heavy-duty commercial truck applications

• Ideal for fleets, repair facilities, and owner-operators

Specifications

• Industry Part Number: 3807A

• Brake Size: 16.5" × 7.00"

• Mounting Type: Outboard

• Bolt Holes: 10

• Bolt Circle Diameter: 11.25"

• Pilot Diameter: 8.78"

• Material: Premium Cast Iron

• Balanced: Yes

• Approximate Weight: 118 lb per drum

Common Cross Reference Numbers

• Gunite: 3807A, 3807AX

• Webb: 66864B

• ConMet: 10012574

• Meritor: 3214X

• Automann: 151.3807A

Always verify your OEM or interchange part number before ordering.

Applications

Fits many heavy-duty commercial truck drive axle and trailer applications using a 16.5" × 7" outboard-mounted brake drum. Commonly paired with 4707 brake shoes. Always verify brake dimensions and OEM part numbers to ensure proper fitment.

Why Choose Our Balanced Brake Drums?

Our balanced brake drums are manufactured to meet or exceed OEM specifications, providing reliable braking performance, reduced vibration, and extended service life. Built for demanding commercial trucking environments, they deliver the strength, durability, and consistent performance that fleets and owner-operators rely on every day.