40020223 Midland Haldex S-ABA Kit

The Midland Haldex 40020223 is an S-ABA (Automatic Brake Adjuster) Kit for truck and trailer air brake systems. It features a 6-inch arm length, 0-degree body angle, and zero offset, with a 1-1/2-inch, 10-spline diameter and a 1/2-inch arm hole. The straight grease fitting is positioned at 242 degrees for easy service access. This kit pairs with bracket kit 42710431 and uses a plate-style anchor bracket. Internal construction includes high-alloy steel gears, a rolled wormshaft, a heat-treated housing, and a centralized clutch. The clearance-sensing design maintains a constant, uniform gap between brake drum and lining, and gradual adjustment reduces the risk of over-adjustment during extended braking. OEM reference number 409-26005. Cross-references include 40020223M1D, 409-20005, and HDX40020223. A genuine Haldex part, sold by Pro Gear and Transmission. Call us to confirm proper fit for your application.

Features

6-inch arm length, 0-degree body angle, zero offset
1-1/2-inch diameter, 10-spline shaft interface
1/2-inch arm hole diameter; straight grease fitting at 242-degree location
High-alloy steel gears with rolled wormshaft and heat-treated housing
Centralized clutch design
Clearance-sensing mechanism for gradual, consistent brake adjustment; reduces risk of over-adjustment under prolonged braking
Includes plate-style anchor bracket; pairs with bracket kit 42710431

Tech Specs

• Spline Diameter: 1-1/2"
• Spline Count: 10
• Arm Length: 6"
• Body Angle: 0°
• Offset: 0
• Arm Hole Diameter: 1/2"
• Grease Fitting Type: Straight
• Grease Fitting Location: 242°
• Anchor Bracket Style: Plate
• Bracket Kit: 42710431
• OEM Part Number: 409-26005

Additional Information

The clearance-sensing design maintains a constant and uniform distance between the brake drum and lining.
The gradual adjustment of the S-ABA lowers the risk of over-adjustment during prolonged braking.
Cross-references: 40020223, 40020223M1D, 409-20005, 40920005, HDX40020223, MID40020223.