$99.69
The 3598X Heavy Duty Brake Drum is built to deliver smooth stopping power, lower maintenance downtime, and exceptional wear life on commercial trucks. Featuring a 16.500″ brake surface diameter and a 5.450″ flat brake surface, this 10-hole unit provides exact fitment for Freightliner Cascadia P4 models alongside universal heavy-duty axles. It acts as a direct cross reference replacement for part numbers 3598X, 65151B, and 85-123383-002. Because each unit is fully machined inside and out, it helps eliminate pedal chatter and heat checking under heavy payloads.
Keep your heavy-duty vehicles operating safely by installing the 3598X Brake Drum (16.5″ x 5″). Engine-balanced and manufactured to rigorous Fleet Standard specifications, this heavy-duty component is fully machined on both inner and outer surfaces. Consequently, this precise machining process guarantees dynamic balance, eliminates high-speed wheel vibration, and ensures maximum contact with your replacement brake shoes.
Whether you operate a Freightliner Cascadia P4 (2018–Present) or manage a fleet of mixed-brand commercial trucks, this 3598X Brake Drum offers outstanding thermal stability during severe braking cycles. Furthermore, proper heat dissipation reduces thermal cracking and extends overall wheel-end component life. However, because this heavy-duty part weighs 96 lbs, it ships via secure freight carriers. Therefore, we palletize each order carefully to protect the ground hub surfaces throughout transit.
In order to maximize the service life of your new 3598X Brake Drum, always replace your S-cams and bushings during installation. Additionally, inspect your wheel bearings and grease seals to prevent premature wear. First, clean the mounting surface thoroughly before positioning the drum. Next, torque all 10 flange bolts to manufacturer specifications in a star pattern. Finally, perform a test drive to ensure smooth operation without chatter. For more guidance on selecting friction materials, read our complete guide on how to choose heavy-duty brake shoes.
Focus Part Number: 3598X
Brake Surface Diameter (A): 16.500 in.
Brake Surface Flat (C): 5.450 in.
Overall Depth (B): 9.370 in.
Pilot Diameter (D): 8.780 in.
Bolt Circle Diameter (E): 11.250 in.
Bolt Hole Pattern (F): 10 Holes @ 1.250 in.
Application Fitment: Universal / Freightliner Cascadia P4 [2018–Present]
Unit Weight: 96 lbs (LTL Freight Only)
UPC: 889626671203
Besides direct fitment applications, this fully machined drum replaces several major OEM numbers. Specifically, you can cross-reference the following parts:
| Manufacturer / Brand | Cross Reference Part Number |
| Primary Part Number | 3598X |
| Gunite | 3598X, 3598, 3758X |
| Webb | 65151B, 65151 |
| Meritor | 85-123383-002, 85123383002 |
| Conmet | 10005332, 10014756, 10041543, 107453 |
| Freightliner | N42A107453 |
| Tuffline | TLD118 |
| Alternate # | 151.6503BAM |
Moreover, if you are replacing the complete wheel end assembly, browse our full inventory of More Drums and Rotors or check official safety guidelines provided by the Federal Motor Carrier Safety Administration (FMCSA).
| Weight | 96 lbs |
|---|---|
| Dimensions | 20 × 20 × 9.5 in |
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