Product Description
NEW AIR DISC CALIPER (MAXXUS) WITH CARRIER – LH (BOTTOM MOUNT)
PART NUMBER(S):
Fleet Products: FP6403220500WCX (Reman), FP6403220500WC-G (New) | OE: 6403220500, 6403220650
DESCRIPTION:
Model: Wabco MAXXUS
Engines: N/A
Vehicles: Freightliner and Western Star trucks with Wabco MAXXUS system (12° mount)
• Brake Side: Left-Hand (LH)
• Caliper Type: Air disc with integrated 12° bottom-mount carrier
• Mounting Style: Bolt-on, 12° axle mount (truck only)
• Bolt Pattern: 4x M20-1.5, standard MAXXUS configuration
• 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)
• Stroke: 20.0 mm
• System Integrity: New – no core return required
• Performance/Technology: MAXXUS system, direct OEM replacement
Applications:
Optimized for 12° steer and drive axle truck platforms using Wabco MAXXUS air disc brakes. Designed specifically for Freightliner and Western Star configurations requiring bottom-mount LH calipers. Not compatible with trailer axles or non-12° mount types.
CROSS-REFERENCE(S):
6403220500, 6403220650, 640322051, 6403220660, 815-6403220500, SB-ADC-6403220500, 6403220510, 6403550500, 6403550500, 6402220060, 6402220080, 99B90065-1, 99B90066-1, M6403220660X, CAW003R, FP6403220500WC-G, FP6403220500WCX
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 Freightliner and Western Star truck axles with Wabco MAXXUS LH 12° configuration
✔ Replace both LH and RH calipers at the same time for optimal performance
✔ Clean and prep the caliper mounting surface; ensure it is flat and free of corrosion.
✔ Mount the caliper and torque fasteners to OEM specifications.
✔ 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 NEW
Brand-new and ready to install — no core charges or reman processing required
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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