1200SC | Type 12 Service Chamber (800822)

TYPE 12 SERVICE CHAMBER

PART NUMBER(S):

Fleet Products: 1200SC, 800822, MA36120, 1200001
OE: KN36012, SC12, T20
Automann: 179.SC12

DESCRIPTION:

Model: Type 12 Service Brake Chamber
Vehicles: Compatible with heavy-duty truck and trailer air brake systems
• Chamber Size: Type 12
• Stroke: 1.75" 
• Push Rod Length: 12" 
• Push Rod Diameter: 1/2"-20 UNF (threaded)
• Port Diameter: 2 x 3/8"-18 NPT
• Stud Size: 2 x 7/16"-14 UNC-2A
• Stud Height: 1.5"
• Stud Spacing: 3.00" (76.2 mm)
• Chamber Height (D): 7.6"–8.1"
• Distance A: 3.7" (94 mm)
• Clampband Orientation (S1): 45°
• Port Position (T): 90°
• Housing: Steel pressure housing, powder-coated with resistance-welded air ports
• Diaphragm: High-grade rubber compound, superior flexibility at -40°C
• Special Features:
 • Orange Alert Stroke Indicator
 • Self-piloting dust shield
 • Step-bottom with 12-gauge steel base
• Operating Temp Range: -40°C to +80°C
• Start Pressure: ≤20 kPa
• Fully Engaged Pressure: ≤50 kPa
• System Weight: approx. 4.7–5.0 lbs

Applications:
Designed for commercial heavy-duty vehicles utilizing Type 12 air brake systems. Provides durable and reliable braking for Freightliner, Kenworth, Mack, Peterbilt, Volvo, International, and other OE platforms. Suitable for both OE and aftermarket replacement.

CROSS-REFERENCE(S):

1200SC, 800822, MA36120, 1200001, SC12, KN36012, MA-36120, SC1200, 274420, 288795, 288796, 5007117, 5007117N, 800822BXW, 1412001, C12, E-12S, HDX SC12, L1200SC, 0587-SC1200, 12SC, 15-120, 62001, 0214-100, 05-112, R870012S, S-9812, S9812, XX-12SC, 30013, 7409674, PLBSC-12, T12, VTC-8129, 1200001, 12S, 288795, 288798, 1412001, 1412031, E-12S, SC12, 745-800822, ZAC800822, SC12M1D, BW800822 103300, 225923, 225930, 226051, 226205, 226952, 227637, 228219, 229653, 229757, 229757, 275140, 275141, 275155, 275206, 275207, 276081, 282640, 283479, 284104, 284893, 285836, 286807, 287301, 287943, 287944, 287945, 287946, 287947, 287948, 287949, 287950, 287951, 287953, 287954, 287955, 287956, 287957, 287958, 287959, 287960, 288238, 288795, 288796, 5007117, M10WR112, 1006907-001, 1006907-002, E2HT2025AA, E9HS202HB, E9HT2025DC, E9HZ2025A, E9HZ2025C, F2HT2025AA, F2HZ2025AA, F2HZ2025BA, F2HZ2025DA, F2HZ2025EA, F3HS2025DA, F3HS2025EA, F3HS2025FA, F3HT2025CA, F4HS2025JA, 6804200118, 6814200418, 702421001, MIDN36212AV, MIDN36212AW, 12DS1019B, 15510403, 15513599, 15532582, 15552994, 1560907A, 2015243, 2087853, 2453682, 643408, 643409, 799455, KN36120, MA36120, MA36124, N30112AH, N36212, N36212AB, N36212AC, N36212AD, N36212AE, N36212AJ, N36212AK, N36212AL, N36212AM, N36212AN, N36212AP, N36212AR, N36212AS, N36212AT, N36212AV, N36212AW, N36212AY, N36212AZ, N36212B, N36212BC, N36212CV, N36212D, N36212E, N36212F, N36212FA, N36212FC, N36212FG, N36212G, N36212GA, N36212GD, N36212GE, N36212GF, N36212GH, N36212H, N36212K, N36212L, N36212M, N36212N, N36212P, N36212R, N36212Y, N36212Z, VN36212AE, VN36212AL, VN36212N, KSC12, 19QEA49302RP, 5396-SC12, C4-3276-L-12, C5-3276-L-12, C6-3276-L-12, V293276L12, V3276L12, 1307060R92, 154472R91, 223927R91, 267932C91, 284444C91, 292486C91, 314143C91, 69541AM, 860931R91, 971049R91, 1412001, 225923BXW, 298-03036-01, 150-120, 53312, 030013, 85107274, V6792844, 928012, A22383

A cross-reference listing means this part may be a compatible replacement for these part numbers based on OEM or distributor data.

IMPORTANT INSTALLATION NOTES:

✔ Confirm push rod length (12") and stroke (≥53 mm) before installation
✔ Verify 3.00" stud spacing, 7/16"-14 UNC threads
✔ Ensure 1/2"-20 UNF push rod threading matches clevis
✔ Align to 90° port and 45° clampband configuration as needed
✔ Use OEM torque specs for mounting bolts
✔ Inspect Orange Alert stroke indicator after installation
✔ Ensure no pressure drop beyond 10 kPa after 5-minute hold at 1000 ±50 kPa

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