The Meritor A3211P3604 is a genuine OEM air brake spider assembly designed for heavy-duty drum brake applications. This spider features 16 mounting holes arranged on an 8.25 in. bolt circle diameter, with holes at a full 360-degree clocking sequence in 22.5-degree increments. Individual hole diameter measures 2.03 in., the pilot diameter is 6.75 in., and the offset is 1.75 in. Casting number 4211-P-2356 is stamped for field identification. Sold by Pro Gear and Transmission. Call us to confirm proper fit for your axle and brake configuration.
Interchanges:
- 15619909
- 3134727
- 4109231
- 8235A3211P3604
- A3211P3604RI
- ATIA3211P3604
- HRA3211P3604
- ROA3211P3604
- TDAA3211P3604
- Automann 1531004
- Dana 361713
- Dayton Parts Batco 02041
Features
16 mounting holes on an 8.25 in. bolt circle diameter
Hole diameter: 2.03 in.
Pilot diameter: 6.75 in.
Offset: 1.75 in.
Full 360-degree clocking sequence in 22.5-degree increments
Casting number 4211-P-2356 for field identification
Tech Specs
- Mounting Holes: 16
- Bolt Circle Diameter: 8.25 in.
- Hole Diameter: 2.03 in.
- Pilot Diameter: 6.75 in.
- Offset: 1.75 in.
- Clocking Sequence: 0, 22.5, 45, 67.5, 90, 112.5, 135, 157.5, 180, 202.5, 225, 247, 270, 292.5, 315, 337.5 degrees
- Brake Type: Q
- Casting Number: 4211-P-2356
- VMRS Code: 013-002-105
