The Hendrickson S-21399-3 (also listed as S213993) is a genuine Hendrickson brake slack adjuster kit. This part is categorized as a position-not-specified slack adjuster repair kit, making it applicable where the original Hendrickson slack adjuster requires service or replacement. Cross-reference numbers WN4332259252 and MD40020211 may help verify this is the correct part for your application. Sold as an individual unit by Pro Gear and Transmission. Call us to confirm proper fit before ordering.
Features
Genuine Hendrickson brake slack adjuster kit
Part number S-21399-3 or S213993
Cross-references: WN4332259252 and MD40020211
Sold as an individual unit (each)
Call Pro Gear and Transmission to confirm fitment for your specific application
