NHTSA vehicle safety data
2021 Kenworth W900 Recalls & Complaints
The 2021 Kenworth W900 has 3 NHTSA recall campaigns and 1 owner complaint on file as of November 3, 2026. Recall repairs are usually free at an authorized Kenworth dealer.
NHTSA recall and complaint data for the 2021 Kenworth W900. Recall data is refreshed daily from NHTSA.
2021 Kenworth W900 owner complaints
Owners have filed 1 complaint with NHTSA about the 2021 Kenworth W900, describing incidents dated February 14, 2024.
Most-cited components
- Unknown or Other 1 complaint
Newest complaints
ODI #11578489 · Filed
Transmission issues
Seat Belt May Fail
NHTSA #23V717000 · Seat Belts · NHTSA notice
Reported October 26, 2023 · PACCAR Incorporated
Potentially affected: 3,841 vehicles
Repair completion: 38.01% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 23KWK · Owners notified March 20, 2024
Defect description
PACCAR Incorporated (PACCAR) is recalling certain 2020 Kenworth T660, 2018-2024 Kenworth T800 and W900 vehicles. An additional spacer may have been added to the joint that connects the seat to the seat belt tether and buckle, causing an unsecured connection.
Safety consequence
An unsecured seat belt connection may not properly restrain an occupant during a crash, increasing their risk of injury.
Manufacturer remedy
Dealers will inspect and remove the additional spacer and replace the bolt, as necessary, free of charge. Owner letters were mailed March 20, 2024. Owners may contact PACCAR's customer service at 1-425-828-5888. PACCAR's number for this recall is 23KWK.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.nhtsa.gov.
Flywheel Capscrews Not Tightened Properly
NHTSA #21V080000 · Engine · NHTSA notice
Reported February 17, 2021 · PACCAR Incorporated
Potentially affected: 132 vehicles
Repair completion: 100% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 21KWA / 21PBB · Owners notified March 29, 2021
Defect description
PACCAR Incorporated (PACCAR) is recalling certain 2021-2022 Kenworth T680, T880, W990, T800, W900 and Peterbilt 579, 567, 389, 367 vehicles equipped with a Cummins X15 engine. The capscrews that attach the flywheel to the crankshaft may have been improperly torqued, allowing the flywheel to detach.
Safety consequence
A detached flywheel can cause loss of drive power, increasing the risk of a crash. Additionally, driveline pieces may be ejected from the engine compartment, increasing the risk of injury.
Manufacturer remedy
PACCAR will notify owners, and dealers will properly torque the capscrews and the engine will also be inspected for damage and, if necessary, repaired, free of charge. The recall began on March 29, 2021. Owners may contact PACCAR customer service at 1-425-828-5888 (Kenworth) or 1-940-591-4220 (Peterbilt). PACCAR's numbers for this recall are 21KWA and 21PBB.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Lower Rear Pivot Bolts Improperly Sized
NHTSA #20V506000 · Power Train — Axle Assembly · NHTSA notice
Reported August 26, 2020 · PACCAR Incorporated
Potentially affected: 1,097 vehicles
Repair completion: 100% (latest rate the manufacturer reported to NHTSA; dataset updated November 3, 2026)
Manufacturer campaign 20PBE and 20KWC · Owners notified September 29, 2020
Defect description
PACCAR Incorporated (PACCAR) is recalling certain 2020-2021 Peterbilt 348, 365, 367, 389, 520, 567 and Kenworth T800, T880, W900, W990 vehicles equipped with Watson and Chalin steerable lift axle suspension systems (model SL2065). The axles may have lower rear pivot bolts that are not long enough to sufficiently engage the locking feature of the corresponding nuts.
Safety consequence
The short screws can cause the hardware to separate from the suspension system and become road hazards, increasing the risk of a crash and/or injury.
Manufacturer remedy
PACCAR will notify owners, and dealers will inspect suspect chassis and replace the pivot bolts, as necessary, free of charge. The recall began September 29, 2020. Owners may contact Kenworth customer service at 1-425-828-5888 and Peterbilt customer service at 1-940-591-4220. PACCAR's numbers for this recall is 20PBE and 20KWC.
Notes
Owners may also contact the National Highway Traffic Safety Administration Vehicle Safety Hotline at 1-888-327-4236 (TTY 1-800-424-9153), or go to www.safercar.gov.
Other Kenworth W900 model years
Check your 2021 Kenworth W900 VIN
Not every recall applies to every VIN in a given year. Enter the 17-character VIN from your Kenworth W900 at nhtsa.gov/recalls to see whether your specific vehicle has an unrepaired recall.
Check a Kenworth VIN