3800X Balanced Front Brake Drum Replacement | 15" × 4" Heavy-Duty Brake Drum

Premium Heavy-Duty Steer Axle Brake Drum

The Motion Trucking Parts 3800X Balanced Front Brake Drum is engineered for demanding heavy-duty commercial truck applications. Manufactured from premium high-strength cast iron and precision balanced for smooth operation, this brake drum delivers outstanding braking performance, superior heat dissipation, and extended service life.

Designed to meet or exceed OEM specifications, the 3800X provides exceptional durability, dimensional accuracy, and consistent braking performance for fleets, owner-operators, and repair facilities.

Features

• Premium balanced brake drum

• Manufactured from high-strength cast iron

• Precision machined for OE fit and performance

• Excellent heat dissipation for reduced brake fade

• Precision balanced to minimize vibration

• Heavy-duty construction for long service life

• Engineered for steer axle applications

• Meets or exceeds OEM specifications

• 100% quality inspected before shipment

Specifications

Brand: Motion Trucking Parts

Part Number: MTP-3800X

Position: Front / Steer Axle

Brake Drum Type: Balanced

Material: Premium Cast Iron

Mounting Type: Outboard

Wheel Type: Disc

Weight: 81 lbs

Bolt Hole Quantity: 10

Bolt Circle Diameter: 11.25 in

Bolt Hole Diameter: 1.35 in

Maximum Brake Diameter: 15.00 in

Maximum Wear Diameter: 15.12 in

Brake Shoe Width: 4.00 in

Brake Surface Width: 4.61 in

Overall Depth: 9.18 in

Mounting Flange Thickness: 0.50 in

Compatible Brake Shoes

This brake drum is designed for 15" × 4" brake shoe assemblies, including:

• 1308Q

• 1308E

• 4702Q / 4702QP (Meritor Q Plus steer axle applications)

• Compatible with Meritor Q Plus 15" × 4" steer axle brake systems.

Cross Reference

Replaces or Interchanges with:

Gunite

• 3800X

• 3726X

• 9001X

ConMet

• CM10009920

• 10009920

• 107164

Webb

• 65548B

• 65545B

Meritor / Rockwell

• 85-123448-002

• 8512344800

Alliance

• ABP N42A154B

Road Choice

• BD1504X-44

Applications

• Heavy-duty commercial trucks

• Class 8 tractors

• Steer axle applications

• Fleet maintenance

• Owner-operators

• Truck repair facilities

Why Choose Motion Trucking Parts?

At Motion Trucking Parts, we are committed to supplying premium-quality heavy-duty brake components that fleets can depend on. Every brake drum is manufactured with strict quality standards to ensure reliable braking performance, extended service life, and dependable operation under the toughest road conditions.

Motion Trucking Parts — Premium Quality Heavy-Duty Truck Parts Built for Performance.