Heavy Duty Beefed Up Automatic Brake Slack Adjuster For Semi Trucks 1.5 Diameter Slack Spline 28 Spline Count 5.5 Arm Length OEM Replacement Fits TR40010143 And 133.2840 Style 1 Pack

Heavy Duty Auto Brake Slack Adjuster for Semi Trucks - 1 Pack
✔️ 1.5 in slack spline diameter, 28 spline count, 5.5 in arm

The heavy duty slack adjuster is a direct OEM replacement for semi trucks. It replaces 133.2840, 135.2840, 1332840, 05668, 40910683, 40010211, and 4W8035, and fits TR40010143 for reliable brake system adjustment.

✅ Arm length: 5.5 inches
✅ Slack spline diameter: 1.5 inches
✅ Slack spline count: 28
✅ Includes: 1 Slack Adjuster, TR40010143 fitment

💡 What is a brake slack adjuster used for in heavy trucks and why replace it with OEM parts?

OEM replacement parts help maintain original braking performance and safety.

- OEM replacement ensures exact TR40010143 fit and reliable operation.
- Handy for preserving braking performance and adjustment accuracy.
- Direct fit minimizes downtime and keeps factory specs in check.
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