Westport Isx G, model years 2007 to 2009. Filed by Westport Fuel Systems Inc and reported to NHTSA on 23 April 2010. 11 vehicles potentially affected.
What the notice says Westport is recalling certain isx g class 8 vehicles equipped with liquefied natural gas pumps. the vent hole associated with the pump pressure relief valve may have been covered by a welding process, during the manufacture of the pump. this can render the pressure relief valve ineffective, resulting in the possible …
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.
What owners ask about this recall
- Which vehicles does recall 10V165 cover?
- Westport Isx G, model years 2007-2009.
- What is wrong with them?
- WESTPORT IS RECALLING CERTAIN ISX G CLASS 8 VEHICLES EQUIPPED WITH LIQUEFIED NATURAL GAS PUMPS. THE VENT HOLE ASSOCIATED WITH THE PUMP PRESSURE RELIEF VALVE MAY HAVE BEEN COVERED BY A WELDING PROCESS, DURING THE MANUFACTURE OF THE PUMP.
- What can happen if it is not put right?
- THIS COULD RESULT IN A SUDDEN LEAK OF HIGH PRESSURE GAS WITHIN THE TANK SHROUD AND A SLOWER LEAK OF TANK PRESSURE, WHICH COULD RESULT IN PERSONAL INJURY AND/OR VEHICLE OR PROPERTY DAMAGE.
- Is there a fix yet?
- Yes, and it is free. WESTPORT WILL INSPECT AND CORRECT THE PROBLEM BY UPGRADING TO AN AUTOMATIC SHUT-OFF VALVE THAT DOES NOT USE THE VENT HOLE. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN DURING MAY 2010.
- What should I do now?
- Check your own vehicle by its VIN with NHTSA, which is the record to act on.
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: “THIS COULD RESULT IN A SUDDEN LEAK OF HIGH PRESSURE GAS WITHIN THE TANK SHROUD AND A SLOWER LEAK OF TANK PRESSURE, WHICH COULD RESULT IN PERSONAL INJURY AND/OR VEHICLE OR PROPERTY DAMAGE.”
affected
in the notice
caught
| Campaign | 10V165 |
|---|---|
| Filed by | WESTPORT FUEL SYSTEMS INC |
| System at fault | Fuel System, Other:Delivery:Fuel Pump |
| Reported to NHTSA | 23 April 2010 |
| Model years | 2007-2009 |
| Vehicles named | WESTPORT ISX G |
What the notice says today
The consequence
THIS COULD RESULT IN A SUDDEN LEAK OF HIGH PRESSURE GAS WITHIN THE TANK SHROUD AND A SLOWER LEAK OF TANK PRESSURE, WHICH COULD RESULT IN PERSONAL INJURY AND/OR VEHICLE OR PROPERTY DAMAGE.
The remedy
WESTPORT WILL INSPECT AND CORRECT THE PROBLEM BY UPGRADING TO AN AUTOMATIC SHUT-OFF VALVE THAT DOES NOT USE THE VENT HOLE. THIS SERVICE WILL BE PERFORMED FREE OF CHARGE. THE SAFETY RECALL IS EXPECTED TO BEGIN DURING MAY 2010. OWNERS MAY CONTACT INLAND KENWORTH FONTANA AT 1-909-823-9955 AND INLAND KENWORTH MONTEBELLO AT 1-323-278-4100.
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 145 notices in the record whose component field names fuel system, other. Across that group the median wait before owners were written to was 35 days.
Last checked . No change has been recorded in the wording.
How to cite this record
Quoting the wording on this page means quoting a version, so the date belongs in the citation:
CarsMultiverse, recall 10V165, wording as read on 17 September 2026. https://carsmultiverse.com/recall/10v165/
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.
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 10V165 on 17 September 2026, they were:
- Defect summary
4089c956 - Consequence
651dbe91 - Remedy
88675b94
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 10V165 · how the whole register is watched
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