NHTSA Recall 04V378000: Pressure relief devices (fuel system)

PACCAR INCORPORATED reported this safety recall to NHTSA on August 2, 2004, covering an estimated 1 vehicles. It affects 2003 Peterbilt 320.

vehicles potentially affected

model affected

NHTSA campaign	04V378000
Manufacturer campaign	704-C
Component	FUEL SYSTEM, OTHER › STORAGE › TANK ASSEMBLY › PRESSURE RELIEF DEVICES
Report received	August 2, 2004
Initiated by	NHTSA Office of Defects Investigation

Defect

Certain trucks equipped with nexgen liquid natural gas (lng) tanks are being recalled. The introduction of water into the discharge side of both the primary and secondary relief valves simultaneously and subsequent freezing in service can render the valves temporarily inoperative.

Safety risk

If not inspected the risk of tank over-pressurization and a catastrophic tank rupture can occur, potentially resulting in serious injury or death.

Remedy

Nexgen will notify the customer, perform an inspection, and provide instructions for ordering and installing the retrofit kit. Owners should contact nexgen at 1-770-720-6780 or peterbilt at 1-940-591-4201.

Notes

Paccar recall no, 704-c.customers can also contact the national highway traffic safety administration's auto safety hotline at 1-888-dash 2-DOT (1-888-327-4236).

Vehicles covered by recall 04V378000

Make and model	Model years
Peterbilt 320	2003

Being listed here means the campaign covers the model year, not that every car was built with the defect or is still unrepaired. Enter your VIN above to check your specific vehicle. Recall repairs are free at authorised dealers. Source: NHTSA, October 2026.