Description
MACK "CERTIFIED REMANUFACTURED" 85MM DRIVE-THRU AIR BRAKE COMPRESSOR
PART NUMBER(S):
Fleet Products: 9111535400X (Remanufactured) | Replaces OE: WABCO 9111530186, 911153055, 9111530550, 9111530557, 9111530559, 911153055R, 9111535400, 9111535407, 9111535410, 9111535550, 9111539550 | Mack 303GB4225T2, 303GB5129, 303GB5129AM, 303GB5129AM2, 303GB5129M, 303GB5129MQ, 745-9111535400X | Volvo MID9111535400, MID9111535400X | Automann 170.AC535400
DESCRIPTION:
Model: Wabco SS318 Single cylinder compressor with 11 teeth Spline through drive
Vehicles: Mack Commercial Trucks, HD Vocational Platforms
• Bore Size: 85MM
• Air Delivery: 18.7 CFM
• Drive Type: Thru-drive (11-tooth gear) for power steering pump, etc
• Cooling: Water and air cooled
• Mounting: Extended flange
• Air Inlet: Integrated housing
• Discharge Port: 1/2"-27 NPT
• Governor Port: 1/2" NPT
• Water Port: 3/8" NPT
• Head Assembly: 9111539312AH
• Includes: Gasket kit for installation
Applications:
Built for Mack heavy-duty trucks requiring thru-drive compressors—commonly used to power accessory drive systems such as fuel transfer pumps, power steering, or hydraulic PTO. Ideal for high-demand service environments and fleet applications where auxiliary equipment is powered from the compressor. Mack 303GB5129M, Volvo MID9111535400X, and related equivalents 9111539550X, S9111530550, and S9111530557 are interchangeable, with 9111535410X configured as non-drive thru and 9111535400X as drive thru.
CROSS-REFERENCE(S):
1650792042, 21436SS, 5396-9111535400X, 59111530550, 6300-911153055R, 706369AT, 708012000, 767653311456, 8235S9111530550X, 8235S9111530557, 9111530550X, 9111530550XBXR, 9111530557X, 9111535400-RC, 9111535400C8T, 9111535400HTP, 9111535407X, 9111535550X, 9111539550X, 940580, ATP21436, ATX21436, GL9111535400, GTS21436, HDX9111535400X, MBI9111535400X, MPGS-21436, PS9111535400, S9111530550, S9111530550X, S9111530557, S9111530557X, S9111535400, S9111535407, S9111535410, TDAS9111530557, TF9111535400, VIP9111535400, WAR9111535400, ZZ9111535400X
A cross-reference listing means this part should be a suitable replacement for the part numbers listed.
IMPORTANT INSTALLATION NOTES:
✔ Confirm extended flange and 11-tooth gear compatibility
✔ Thru-drive must align with downstream accessory configuration
✔ Use included gaskets and replace all external seals
✔ Ensure STOR connections are properly torqued
✔ Verify discharge/governor/water port sizes before install
✔ Match cooling line routing to vehicle spec
SOLD AS REMANUFACTURED – CORE RETURN REQUIRED
Built to OEM standards — thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.
Warranty Information
