Functionality: A self-adjusting slack adjuster for consistent brake clearance & reduced maintenance; Replaces Brands: Automann, Meritor, Euclid, Freightliner, Peterbilt Replaces OEM Part No.: ABP N42AS 40010143, BW 973530, BW 973530N, HDX 40010121, HDX 40010143, HDX 40020228, HDX 40020239, HDX 40910627, 135.1031, 973530, 975628, 10143P, 3513971, PROSA56143 Note: Use on the Drive Axle; Includes: Installation Hardware (1 Pc Anchor Bracket, 1 Pc Bushing, & 1 Pc Hex Nut); Special Features: Drilled Worm Wheel (Factory Lubricated & Sealed) & Unhanded Design Material: Nodular Ductile Iron; Color: Black; Spline Diameter: 1-1/2 in; Arm Length: 5.5 in - 6.5 in; Arm Type: Straight; Spline Count: 10; Adjustment Type: Automatic; Position: Universal 18-month Warranty - This product is covered for one year or completion of 100,000 miles since installation or 18 months after your purchase, whichever comes first

If the existing self-adjusting slack adjuster exhibits looseness in the arm or spline fitting, stripped or worn splines, cracks, corrosion, or visible physical damage, it’s time to replace it. That’s why we have introduced the Automatic Air Brake Slack Adjuster. It automatically maintains the correct clearance or slack between the brake shoes and the brake drum. It adjusts the slack itself over time, eliminating the need for manual adjustment. This crucial mechanical component will further reduce manual maintenance. Explore more about this aftermarket product with the compatibility list below:-

• Safe & Reliable Braking: The automatic slack adjuster will ensure proper brake clearance (slack) and force transfer within the air brake system. It connects the brake chamber push rod to the S-cam shaft, converting the linear motion into rotational force. It ensures effective and controlled braking. You don’t need to make manual corrections. Additionally, we provide a vast array of brake parts for you to explore.
• Precision Arm Span: This self-adjusting slack adjuster is designed to fit S-cam shafts with a 1-1/2 inch diameter and 10 splines. It will ensure a secure and precise fit with an arm length of 5.5" to 6.6", allowing consistent braking across various axle configurations. The unhanded design with a drilled worm wheel will fit on either side (left & right), and you can seamlessly use it with welded clevis brake chambers.
• Long-Term Use: This replacement slack adjuster is made from durable metal (ductile nodular iron) that protects against corrosion. It works seamlessly in harsh environments, weather conditions, and on roads. The robust material will provide reliable performance under demanding loads and heavy braking. The high-strength ductile iron will protect against cracking under stress, while the pre-lubricated and sealed parts will ensure long-lasting performance.
• Compatibility List: This air brake manual slack adjuster is an aftermarket mechanical component that fits specified OEM (original equipment manufacturer) and brands. It features collor-lock straight clevis for security, and you don’t need external brackets for installation. Check the list thoroughly before getting one for yourself. Check the complete list below:
• Compatible with Other Brands & Their Part Numbers:
  • Fits Automann: 135.1031
  • Fits Batco: 05-661
  • Fits Eaton: 973530, 975628
  • Fits Freightliner: ABP N42AS 40010143, BW 973530, BW 973530N, HDX 40010121, HDX 40010143, HDX 40020228, HDX 40020239, HDX 40910627, BW 973530N
  • Fits Mack: 25-QD-410-P4
  • Fits Meritor: R806022, M807022,R806022A
  • Fits OE Aftermarket: 10143P, 3513971, PROSA56143
  • Fits MCI: 04-06-6020
  • Fits Peterbilt: 305886
  • Fits Euclid: E6924B, E-6924B
  • Fits Spicer: 818552
  • Fits Haldex: 400-10143, 10143, 400-20228, 400-20239, 40010121, 40010121M1D, 40010143, 40010143M1D, 40010143MID, 40020228M1D, 409-10134, 409-10135, 409-10238, 409-10548, 409-10565, 409-10627, 409-10649, 409-10733, 40910649, 40910733, 8235M807022, BW-975628N, BW975628N, FLT40010143, GE10143, HAL40010143, MID40010121, MID40010143, MIR40010143, TDAM807022
  • Fits Leland Brake & Wheel Parts: L3607
  • Fits BWP: M-4058
  • Fits Sirco Industries: SA10103
  • Fits Webb Brake Adjusters: WBA 07145A
• When to Upgrade the Slack Adjuster Automatic
  • Visible signs of physical damage, cracks, and corrosion.
  • Loose arm or spline fitting.
  • Damaged, seized, or stripped adjustment bolt.
  • Stripped or worn splines affecting the grip on the S-cam sha