Discover the Haldex 1 Hole 10 Teeth Automatic Slack Adjuster 79678, an OEM-quality part (3193401 & 9524586) designed for heavy-duty trucks. With Cr40/42CrMo worm and gear, fatigue-tested for over 1 million cycles, this adjuster ensures durability and performance. Enjoy a 1-year warranty and expert engineering support.