Kenworth T370, model year 2020. Filed by PACCAR Incorporated and reported to NHTSA on 14 February 2020. 4 vehicles potentially affected.
What the notice says 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 …
Is your vehicle included? Check with your VIN at NHTSA, or ask a dealer. This page is an independent copy of the notice, kept so you can see what changed after it was published. It is not the authority, and the authority’s own text is the one to act on.
Paccar's own number for this recall: 20KWA. That is the number on the owner letter and on the dealer paperwork. 20V086 is the number NHTSA gave the same campaign, and the number this page is filed under. They are one recall, written two ways.
What owners ask about this recall
- Which vehicles does recall 20V086 cover?
- Kenworth T370, model year 2020.
- What is wrong with them?
- 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.
- What can happen if it is not put right?
- Increased brake activation timing may lengthen vehicle stopping distance, increasing the risk of a crash.
- Is there a fix yet?
- Not yet, on the wording NHTSA publishes today. 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.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on. Paccar calls this recall 20KWA, which is the number on the owner letter and the dealer paperwork.
Answered from the register this site holds. NHTSA is the record to act on.
What the authority says can happen if this is not fixed: “Increased brake activation timing may lengthen vehicle stopping distance, increasing the risk of a crash.”
affected
in the notice
caught
| Campaign | 20V086 |
|---|---|
| Filed by | PACCAR Incorporated |
| System at fault | Service Brakes, Hydraulic:Foundation Components:Differential Proportional Valve |
| Reported to NHTSA | 14 February 2020 |
| Model years | 2020-2020 |
| Vehicles named | KENWORTH T370 |
What the notice says today
The consequence
Increased brake activation timing may lengthen vehicle stopping distance, increasing the risk of a crash.
The 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.
What it said before
This campaign is in the register but not yet in the dated wording archive, so we cannot yet say whether its text has moved. It enters the archive on the next pass.
This is one of 583 notices in the record whose component field names service brakes, hydraulic. Across that group the median wait before owners were written to was 37 days.
Last checked . No change has been recorded in the wording.
The models named here, across their whole recall history
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 20V086, wording as read on 16 September 2026. https://carsmultiverse.com/recall/20v086/
The cross-border matches used on this site are deposited as a citable dataset: doi:10.5281/zenodo.22087136. The recall wording itself is published by the national authority named above and is theirs, not ours.
The recall record and its wording are published by the US National Highway Traffic Safety Administration and are US Government public domain. The dated archive, the comparison and any before-and-after above are CarsMultiverse. How fresh every engine behind this page is, is public on the status page. To check a specific vehicle, use NHTSA’s own VIN lookup.
Other Paccar notices we hold
- 26V544: 2027 Peterbilt 567, 579, 589 and 2027 Kenworth T680, T880, and W990
- 26V485: 2027 Peterbilt and Kenworth
- 26V442: 2026-2027 Peterbilt 579 and 2027 Kenworth T680 tractors
- 26V022: 2026 Kenworth L770 and 2024-2026 Peterbilt 520
- 25V795: 2026 Peterbilt 567 and 589 trucks
- 25V569: 2024-2026 Kenworth T680, T880, and W990 trucks
- 25V353: 2024 Peterbilt 367, 2026 Peterbilt 548, 589, and 2024-2026 Peterbilt 567 trucks
- 25V182: 2021-2026 Peterbilt 220, 2022-2026 Kenworth K370, and 2020-2026 K270 Medium-Duty Battery Electric
All 138 Paccar campaigns we hold · Every manufacturer in the record
The fingerprint of this notice
We take a SHA-256 of each of the three blocks of text the authority publishes and keep the first eight characters. As we last read campaign 20V086 on 23 August 2026, they were:
- Defect summary
f6926989 - Consequence
fce5387e - Remedy
c1dfd1fb
We first read this notice on 21 August 2026. It has not moved since. If it ever does, these characters will not match, and the change will be dated here.
The wording we hold for 20V086 · how the whole register is watched
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