Description
AIR DISC CALIPER (MAXXUS) WITH CARRIER – LH – REMAN, 12° MOUNT
PART NUMBER(S):
Fleet Products: FP6403221040WCX (Remanufactured) | Replaces OE: WABCO 6403221040, 6403221060 | Freightliner WAB6403221040 | Automann 158.6403221040 | Other 403221040, 22-50139-000
DESCRIPTION:
Model: Wabco MAXXUS 12° radial mount, standard with pocket bridge
Vehicles: Freightliner Cascadia (2018+), Coronado (2020+); Western Star 49X, 57X 2018+
• Side: Left-hand (LH)
• Dimensions: 450 × 320 × 270 mm
• Rotor Diameter: 430 mm
• Rotor Thickness: 45 mm
• Stroke: 20.0 mm
• Mounting: 12° radial side mount
• Threads: 6 × M20 mounting bolts
• Ports: 2 × M14 × 1.5
• Pistons: Dual 60 mm
• Construction: Integrated carrier
• Material: Stainless steel pistons
• Brake Pad Compatibility: PE2061HK
• Compatible Rotor: 430 mm OD, 45 mm new
• Recommended Pin Kit: FPK30272
• Compatible Spring Brakes: FPK041960
• Carrier Included: 12° LH (FP2553)
Applications:
For use on LH steer axles of heavy-duty trucks with 12° Wabco MAXXUS systems. Compatible with Freightliner and Western Star platforms equipped with standard caliper carriers. Not suitable for RH wheels, trailer axles, or non-MAXXUS systems.
CROSS-REFERENCE(S):
6403221040, 6403221810, WAB6403221040, WAB6403221810
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:
✔ Use only on 12° LH steer axles with MAXXUS systems and standard carriers
✔ Replace both LH and RH calipers simultaneously for optimal balance
✔ Clean and prep the caliper mounting surface; ensure it is flat and free of corrosion.
✔ Mount the caliper and torque fasteners to OEM specifications (280–310 Nm for carrier bolts; 40–45 Nm for brake fittings).
✔ Turn the adjuster CLOCKWISE until the brake pads just contact the rotor (avoid over-tightening).
✔ Then turn COUNTER-CLOCKWISE ¼ turn to set proper clearance.
✔ Confirm system air pressure is between 100–120 psi.
✔ Block and secure wheels to prevent any movement.
✔ Depress the emergency brake release button on the dash to release spring brakes.
✔ Only after the wheels are secure and spring brakes are released should you proceed with caliper adjustment.
SOLD AS REMANUFACTURED | CORE RETURN REQUIRED
Built to OEM standards | thoroughly cleaned, inspected, and tested to ensure durability, performance, and reliability in demanding applications.
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Warranty Information
