Description
FP400-10143 - AUTO SLACK ADJUSTER - 10 SPLINE, 1 1/2" - 5.5", 6.5"
PART NUMBER(S):
Fleet Products: FP400-10143 | OE: 400-10143, A24-3275-H-1152, 40010143 | Automann: 135.1031
DESCRIPTION:
Model: Auto Slack Adjuster
Vehicles: Suitable for drive axle drum brake systems in heavy-duty trucks and trailers
• Spline Count: 10
• Camshaft Diameter: 1 1/2"
• Arm Length: Adjustable 5.5" or 6.5" (center-to-center)
• Mount Type: Straight arm
• Mounting Hole Center Distance: 5.5", 6.5"
• Clevis Pin Size: 1/2"
• Body Angle: 0° (straight arm)
• Material: Forged steel
• Lubrication: Zerk fitting (optional lubrication point)
• System Type: Automatic (self-adjusting, sealed pull-pawl mechanism)
• Brake Type: Drum brakes
• Technology: Self-adjusts every chamber stroke; sealed design reduces maintenance
• Piston Color: Typically red (per A24-3275-H-1152 reference)
Applications:
Designed for use on drive axle drum brake systems requiring a 10-spline, 1 1/2" cam with a 5.5" or 6.5" straight arm. Compatible with standard heavy-duty applications including linehaul and vocational trucks. Replacement for A24-3275-H-1152 and equivalent designs used across multiple truck makes.
CROSS-REFERENCE(S):
400-10143, 40010143, 400-20228, 400-20239, 40010121, 40010121M1D, 40010143M1D, 40010143MID, 40020228M1D, 409-10134, 409-10135, 409-10238, 40910534, 409-10548, 409-10565, 409-10627, 409-10649, 409-10733, 40910649, 40910733, 973530, 975628, ABP N42AS 40010143, BW 973530, BW 973530N, E-6924B, E6924B, EM 50470, FLT40010143, GE10143, HAL40010143, HDX 40010121, HDX 40010143, HDX 40020228, HDX 40020239, HDX 40910627, L3607, M-4058, M807022, MID40010121, MID40010143, MIR-400-10143, MIR40010143, MPGS-23852, ATX23852, 400-10143-RC, ATP23852, 23852SS, VIP400-10143, 400-10143HTP, GTS23852, PS400-10143, TF 400-10143, 25-QD-410-P4, 305886, 818552, 04-06-6020, A86022, A3275X65115210, 286955N, PROSA56143, PL-10143, RB-10143, S-23852, S23852, SA10103, TDAM807022, WA10143R, WBA 07145A, OTR10143, 3513971, 1504897, 8235M807022, E-6924B, R806022, R806022A
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:
✔ Follow OEM installation procedures precisely
✔ Use a 1/2" clevis pin only
✔ Verify arm length and spline match application
✔ Grease if Zerk fitting is present; some models are sealed
✔ Torque fasteners to spec and check adjustment stroke
✔ Inspect periodically for wear or improper function
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