Description
TYPE 20 SERVICE CHAMBER
PART NUMBER(S):
Fleet Products: 2000SC, 2000001, 52000001, MA36200
OE: SC20, KN36200, E-20S
Automann: 179.SC20
DESCRIPTION:
Model: Type 20 Service Brake Chamber
Vehicles: Compatible with commercial vehicles and trailers requiring Type 20 service brake systems
• Chamber Size: Type 20
• Stroke: 2.25" (57 mm)
• Push Rod Length (J): 10.15"
• Push Rod Diameter: 5/8"-18 UNF (threaded)
• Port Size: 2 x 3/8"-18 NPTF
• Stud Size: 2 x 7/16"-14 UNC-2A
• Stud Height: 1.5"
• Stud Spacing (E): 4.75" (120.7 mm) center-to-center
• Housing Height (D): 8.6" (218 mm)
• Distance A (mounting bracket to spring housing): 4.0" (102 mm)
• Port Position (T): 90°
• Clampband Position (S1): 45°
• Weight: ~7.5–8.8 lbs (3.4–4.0 kg depending on variant)
• Housing Material: Powder-coated steel with resistance welded air ports
• Diaphragm: Cold-resistant nitrile rubber, flexible to -40°F
• Features:
• Orange Alert stroke indicator
• Self-piloting dust shield
• Step-bottom construction with 12-gauge steel
Applications:
Designed for use in drive or trailer axle service brake systems on heavy-duty commercial vehicles including Freightliner FLD, International 9000 Series, Mack CH/U Series, Volvo VNL, and Peterbilt 379 models. Compatible with FMVSS 121 and CMVSS 121 braking requirements.
CROSS-REFERENCE(S):
2000SC, 2000001, 52000001, MA36200, SC20, KN36200, E-20S, 179.SC20, 288803, 800824, 802990, R870020, E-20S, MA36200, WA20SC, S-9814, 05-120, M-20SC, 1-102, 14-516, 150-120, 150-200, 030017, SC1600, SC2000, HDX SC20, HDX SC20L, HDX SC20LCW, KN-36200, MIDSC20, C20, 0220-100, 19-QE-465R-P3, 19QE465RP3, ZAJ1420001, MGM1420001, MGM1420077, MGM1420111, MGM1621901, FLTS20S20, SBT20, PLBSC-20, XX-20SC, 51-20, 162879, 5396-SC20, 62003, PTASC20, SC20LCW, TF 20SC, GTS9814, WA20SC3, SBT20, APL-100026, BXK058715, K058715, K058715BXW, MGM1420001, 800824, 060-800824, 52000001, 2000001, 20S, 288803, 288806, 5200001, 1420001, SC20, 8A5727, 225932, LTS09006820, ZAC225932, 21535000, 821276, 060-821276
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 (10.15") and thread (5/8"-18 UNF) match clevis
✔ Use proper mounting with 4.75" stud spacing and 7/16"-14 UNC threads
✔ Air port orientation typically 90°; verify before installation
✔ Clampband orientation 45°; confirm compatibility with axle mounting
✔ Torque specifications:
• Mounting bolts: 35–40 ft-lbs
• Push rod clevis pin: 50–60 ft-lbs
• Air line fittings: 18–20 ft-lbs
✔ Always replace diaphragm during installation; never reuse
✔ Apply thread sealant on air fittings to prevent leaks
✔ Orient ports downward to avoid moisture accumulation
✔ After install, verify 1/4"–3/8" free stroke to comply with FMVSS 121
✔ Stroke indicator should clearly display range (Orange Alert)
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