Product Description
MA15690X MAXIBRAKE 50-SERIES SPRING BRAKE – SERVICE CHAMBER SIZE 50
PART NUMBER(S):
Haldex: MA15691, KSC50HBBC-800NN
DESCRIPTION:
Model: MA15691, MA15690
Engines: Air brake-equipped engines with 150 PSI max pressure
Vehicles: Heavy-duty trucks, trailers, and commercial buses
• Maxibrake® 50-Series spring brake chamber
• Service chamber size 50
• 8.00-inch push rod length
• Steel housing for durability and corrosion resistance
• Nylon piston and push rod bearing
• Packing cup piston seals for long-term sealing performance
• Rated for up to 150 PSI operating pressure
• Dual-piston design for service and spring functionality
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Applications: Suitable for heavy-duty highway tractors, commercial trailers, and buses utilizing 50-series spring brake chambers for parking and emergency brake systems. Compatible with air-braked axles requiring an 8" push rod and the same mounting pattern. Common in Haldex Maxibrake configurations.
CROSS REFERENCES:
8W3956, M6006589, MA15691, KSC50HBBC800NN, KSC50HBBCS45013, 5396-MA15691, 767653016832, HDX MA15691, KSC50HBBC-800NN, KSC50HBBC45013, MBIMA15691, MIDMA15691, KSC50HBBCS45009, ZZMA15691
A cross-reference listing means this part should be a suitable replacement for the part numbers listed. Please confirm all ports and dimensions match your application before installing
INSTALLATION NOTES
✔ Follow installation manual due to high internal spring tension
✔ Ensure 8.00" push rod length matches original equipment before replacement
✔ Mounting bolts and brackets must be torqued to OEM specs
✔ Disconnect air pressure and chock wheels before removal
✔ Use RN21AF for seal and service kit replacements
SOLD AS REMANUFACTURED | CORE RETURN REQUIRED
Built to OEM standards | thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.
SUPPORT & ORDERING
For technical support, installation guidance, or to confirm fitment, Call: 1-877-243-0442 | Email: sales@fleet-products.com
WHY CHOOSE FLEET PRODUCTS | KBR - HEAVY DUTY TRUCK & TRAILER PARTS?
- Canadian-owned and operated since 1985
- Trusted by fleets, mechanics, and B2B partners across North America
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- Competitive pricing with core return refunds
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