NHTSA campaign 20V086000 · Manufacturer campaign 20KWA
Kenworth Recall 20V-086: Missing R12 Relay Valve/FMVSS 121
NHTSA recall 20V086000 (Manufacturer campaign 20KWA) was reported by PACCAR Incorporated on February 14, 2020, with 4 vehicles potentially affected (per NHTSA). NHTSA's record lists the Kenworth T370 for the 2020 model year. Owners were notified on May 6, 2020, per NHTSA.
Updated daily from NHTSA's recall files
Is my vehicle included?
This page lists, by model year, the vehicles NHTSA's recall record names for campaign 20V086000 in the model years try.vin imports (1995 and later); NHTSA's own record can list more. A model year on the list doesn't mean every vehicle of that year is included, and some may already have been repaired.
To see whether a specific vehicle is included and still needs the repair, enter its VIN at nhtsa.gov/recalls.
Free VIN check: decode a VIN to see its year, make and model.
Key facts
- NHTSA campaign
- 20V086000 (also written 20V-086 or 20V086)
- Filed by
- PACCAR Incorporated
- Manufacturer campaign number
- 20KWA
- Report received
- Potentially affected
- 4 vehicles (per NHTSA)
- Component
- Service Brakes, Hydraulic — Foundation Components — Differential Proportional Valve
- Owners notified
- Safety standard
- FMVSS 121
Repair completion: 100% (latest rate the manufacturer reported to NHTSA; dataset updated October 21, 2026)
NHTSA cautions against comparing completion rates across recalls or manufacturers. How try.vin reads them.
Vehicles listed for this recall
NHTSA's recall record lists these vehicles for recall 20V086000. try.vin imports model years 1995 and later, so NHTSA's own list can be longer. Model years with a try.vin recall page link to it. Build dates are NHTSA's range for a model year (per NHTSA); a vehicle built in that range is not necessarily included.
Kenworth
Kenworth T370
- 2020 · Vehicles built April 23, 2019 – September 30, 2019 (per NHTSA)
NHTSA's recall notice
As NHTSA's recall record states it for campaign 20V086000.
Defect description
PACCAR Incorporated (PACCAR) is recalling certain 2020 Kenworth T370 long wheelbase vehicles with larger rear axle spacing. The vehicles may be missing a second R12 relay valve, causing increased brake activation timing. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard (FMVSS) number 121, "Air Brake Systems."
Safety consequence
Increased brake activation timing may lengthen vehicle stopping distance, increasing the risk of a crash.
Manufacturer remedy
PACCAR will notify owners, and Kenworth dealers will install a second R12 relay valve, free of charge. PACCAR issued owners an interim notification on April 14, 2020. The recall began May 6, 2020. Owners may contact Kenworth customer service at 1-425-828-5888. PACCAR's number for this recall is 20KWA.
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.
Sources
Official NHTSA notice for recall 20V086000
Campaign details come from NHTSA's recall files, which try.vin imports once a day. The plain-language subject and the completion rate come from the U.S. Department of Transportation's Recalls Data dataset. How try.vin reads recall data.