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MERITOR ® BRAKE DRUMS
HEAVY-DUTY CAST
• Available machine-balanced or unbalanced • Ideal for severe-duty applications, freight hauling, refuse and more • Allows customers to haul more weight at the 26,000 gross vehicle weight (GVW) rating while providing full FMVSS 121 compliance
• Designed for tractor, trailer and vocational applications across normal to high duty cycles • Compatible with most popular wheel-end configurations and axle ratings • Superior resistance to heat checking and brake fade • Ideal for aftermarket use
MERITOR PN
OVERALL DEPTH BRAKE SIZE BOLT HOLE NO.
BOLT HOLE SIZE
PIOLET DIA.
WGT. (LB)
WEBB CROSS
GUNITE CROSS
85-123570-002 11.25”
16.50” × 8.63” 10
.94”
8.78”
123
66854B 3807AX
03-123520-002
66800F 3782
11.09”
16.50” × 8.00” 10
.94”
8.78”
124
85-123520-002
66800B 3782X
03-123365-002
66884F 3600A
10.59”
16.50” × 7.00” 10
.94”
8.78”
122
85-123365-002
66884B 3600AX
85-123570-002
STANDARD CAST
• Available machine-balanced or unbalanced • Allows customers to haul more weight at the 26,000 gross vehicle weight (GVW) rating while providing full FMVSS 121 compliance • Designed for both tractor and trailer applications across normal to moderate duty cycles
• Compatible with most popular wheel-end configurations and axle ratings • Superior resistance to heat checking • Ideal for aftermarket use
MERITOR PN
OVERALL DEPTH BRAKE SIZE BOLT HOLE NO.
BOLT HOLE SIZE
PIOLET DIA.
WGT. ( LB)
WEBB CROSS
GUNITE CROSS
66864F 3600A 85-123207-002 3600AX
03-123207-002 10.54”
16.50” × 7.00” 10
1.02”
8.78”
112
03-122222-002 8.41”
16.50” × 7.00” 5/6
.78 / .66”
9.44”
108
67518F 68981F
2983C
3295A 85-122683-002 3295AX N/A 85-123399-002 3687X N/A
03-122683-002 8.45”
16.50” × 7.00” 5/6
.78 / .78”
11.25” 106
03-123399-002 9.81”
16.50” × 6.00” 10
1.28”
8.78”
107
03-123207-002
85-123400-002 9.81” 85-123561-002 9.44” 85-123463-002 9.63” 85-123382-002 8.85”
16.50” × 6.00” 10 16.50” × 6.00” 10 16.50” × 5.00” 10 15.00” × 4.00” 10
.94” .94” .94”
8.78”
105
N/A
N/A N/A N/A
11.25” 115
66364B 65174B 60528B 65545F
8.78” 8.78”
97 69
1.28”
3721AX
3721X 85-123366-002 N/A
03-123366-002 8.85”
15.00” × 4.00” 10
.94”
8.78”
70
OPTI-CAST
• Available machine-balanced or unbalanced • Ideal for over-the-road freight-hauling applications
• Designed for both tractor and trailer applications across light to normal duty cycles • Compatible with most popular wheel-end configurations and axle ratings • Ideal for aftermarket use
• Allows customers to haul more weight at the 23,000 gross vehicle weight (GVW) rating while providing full FMVSS 121 compliance
MERITOR PN
OVERALL DEPTH BRAKE SIZE BOLT HOLE NO.
BOLT HOLE SIZE
PIOLET DIA.
WGT. ( LB)
WEBB CROSS
GUNITE CROSS
03-123788-002
56864F N/A
10.54”
16.50” × 7.00” 10
1.08”
8.78”
103.5
85-123788-002
56864B 3922X
85-123788-002
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