Kenworth T300-T450 Drum Brake Parts

Frequently Asked Questions About Kenworth T300-T450 Drum Brake Parts

What components are included in this category?

This category covers drum brake system parts for Kenworth T300 through T450 models, including brake shoes, drums, hardware kits, camshafts, S-cams, rollers, bushings, springs, and related mounting components used in standard drum brake assemblies on these trucks.

How do I know which parts fit my specific Kenworth model and axle position?

Fitment can vary by model year, axle position (front or rear), and brake chamber size, so it is important to check the listed specifications and part numbers against your truck's build sheet or existing components before ordering. If you are unsure, comparing your old part's stamped numbers or measurements to the product listing is the most reliable way to confirm a match.

Should I replace brake shoes and drums together, or can they be replaced separately?

In many cases shoes and drums wear together and are inspected and replaced as a set, but drums can often be resurfaced or reused if they are within acceptable thickness and free of cracking or excessive wear. A qualified technician should measure drum thickness and inspect for damage to determine whether replacement or resurfacing is appropriate.

Are these parts DOT compliant and safe for use on the road?

Drum brake components sold in this category are intended to meet applicable industry and safety standards for heavy-duty truck brake systems. That said, proper installation, torque specifications, and periodic inspection are essential to ensure the brake system remains compliant and safe, so always follow manufacturer installation guidelines and have work verified by a qualified technician.

What should I check during installation to avoid premature wear or failure?

Common installation issues include improperly seated springs, incorrect cam or roller adjustment, contaminated linings, and mismatched hardware. Taking time to clean the brake assembly, replace worn hardware rather than reusing it, and properly adjust brake clearance can help extend the life of new components and prevent uneven wear.