MADE IN VIETNAM
TBP-0540033
15″ × 4″ Steer Brake Drum — replaces 3721AX · 61528B
INTERCHANGE WITH: 3721AX · 61528B · 107507
Front steer-axle brake drum for heavy-duty Class 7–8 trucks. 15″ × 4″ friction surface cast in G3500 gray iron for heat dissipation and fade resistance. Outboard mount on a 10-hole, 11.25″ bolt circle, machined to a tightly toleranced brake surface for low run-out. Interchanges with the 3721AX family.
15″DIAMETER
4″WIDTH
81 lbWEIGHT
G3500GRAY IRON
Technical data sheet
TBP-0540033 · REV 03/2026DIMENSIONS
Overall depth8.84 in
Brake surface dia15 in
Pilot diameter8.78 in
Bolt circle · holes11.25 in · 10
MaterialG3500 (ASTM A48 CL35 eq)
Hardness207–255 HB
Weight81 lb
INTERCHANGE
3721AX3721X61528B61527B1075071008182885-123382-00285-123366-00254201-10853075-01890089BKHD6M151.5401BAABP N42A61528BDB154BOTR1501BBD1504X-06WA140-0010
CHECK YOUR PART # →US TARIFF & DUTY GUIDE →FITMENTS
- Meritor FF & FG-series front (non-drive) steer axles
- Paccar — Peterbilt & Kenworth front steer axles
- International / Navistar front steer axles
- Class 7–8 heavy-duty truck front (steer) position
Why this drum
Cast in G3500 gray iron for heat dissipation and fade resistance
Outboard mount — 10 × 1.25″ holes on an 11.25″ (285.75 mm) bolt circle
CNC-machined brake surface, tightly toleranced for low run-out
Coated sand-mold casting, 12 mm minimum wall for consistent thickness
Vietnam origin — zero anti-dumping duty to the US
OEM-interchangeable — direct fit, no modification required
Need this drum in volume?
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