When rail pressure will not build or bleeds off, the regulator or relief valve is a common failure point. The Bosch 1465ZS0044 replaces the stock valve on LB7 Duramax 2001-2004.

Cross-check your OE number—pickup and cab-chassis calibrations can differ by year.

What you get

• Bosch 1465ZS0044 fuel pressure regulator / relief valve
• Brand-new Bosch unit (not reman)
• Fitment: LB7 Duramax 2001-2004
• OE / cross references: 1465ZS0044, 1 465 ZS0 044
• Warranty: 1 Year (as listed)

Specs

• Part number: 1465ZS0044
• Type: fuel pressure regulator / relief valve
• Condition: New
• Manufacturer: Bosch

Choose this when you want a genuine Bosch replacement matched to the OE number on your truck. Verify fitment for your truck before ordering.