Product Description
AIR DISC CALIPER (MAXXUS) WITH CARRIER – LH – REMAN, 12° MOUNT
PART NUMBER(S):
Fleet Products: FP6403221040WCX (Reman) | OE: 6403221040, 6403220500 | Automann: 158.6403220650
DESCRIPTION:
Model: Wabco MAXXUS
Engines: N/A
Vehicles: Freightliner Cascadia (2018+), Coronado (2020+); Western Star 49X, 57X
• Brake Side: Left-Hand (LH)
• Caliper Type: Reman air disc with integrated standard carrier
• Mounting Style: 12° radial mount, standard with pocket bridge
• Bolt Pattern: 8x M16 on 285.75 mm circle
• Ports: Dual M14x1.5 ISO
• Pistons: Dual 60 mm stainless steel
• 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)
• ABS Compatibility: 4S/4M compliant (non-integrated tone ring)
• Weight: 83 lbs with carrier
• System Integrity: Remanufactured OEM unit, core charge applicable
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, 6403220500, 6403221810, FP6403220500WCX, WAB6403221040, WAB6403221810, 158.6403220650
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.
SUPPORT & ORDERING
For technical support, installation guidance, or to confirm fitment, Call: 1-877-243-0442 | Email: sales@fleet-products.com
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