MADE IN VIETNAM
TBP-0540021
16.5″ × 8.62″ Brake Drum
INTERCHANGE WITH: 3807AX · 66854B · 10012097
Wide-body rear / trailer brake drum for heavy Class 8 applications requiring maximum lining area. 16.5″ × 8.62″ outboard mount with the extended drum width suited to high-GVW drive axles in logging, oilfield, and bulk tanker operations.
16.5″DIAMETER
8.62″WIDTH
110 lbWEIGHT
G3500GRAY IRON
Technical data sheet
TBP-0540021 · REV 03/2026DIMENSIONS
Overall depth8.62 in
Brake surface dia16.62 in
Pilot diameter8.75 in
Bolt circle · holes11.25 in · 10
MaterialG3500 (ASTM A48 CL35 eq)
Hardness207–255 HB
Weight110 lb
INTERCHANGE
3807AX3807X66854B66855B1001209710763885-123570-00254229-018600026HD26M151.68607ABP N42A1658625BDB165858BOTR1615B
CHECK YOUR PART # →US TARIFF & DUTY GUIDE →FITMENTS
- Meritor RS-21-230 rear drive axle
- Meritor RS-23-161 tandem drive
- Hendrickson RTLOC heavy-duty tandem
- Kenworth T880 vocational spec
- Mack Pinnacle axle-back configuration
- Vehicles exceeding 80,000 lb GVW
Why this drum
Extended 8.62″ lining area for maximum braking force at high GVW
Machine balanced with milled corrections, no welded weights
Designed to FMVSS 121 dimensional requirements
Phosphate + oil treatment to prevent bore corrosion
Vietnam origin — not subject to the US AD/CVD orders on brake drums
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