Precision Works Chevy Fuel Valve & Viton O-Ring Rail Relief Plug

Eliminate troublesome fuel pressure codes and maintain consistent rail pressure under heavy engine loads with this precision-engineered upgrade. This CNC-machined 304 stainless steel replacement valve features a durable Viton O-ring and enhanced spring pressure to prevent fuel return and keep your fuel system performing at peak efficiency.

• •Replaces stock pressure relief valve
• •Maintains fuel rail pressure during heavy load conditions
• •Eliminates P1093 and P0087 diagnostic trouble codes
• •CNC-machined 304 stainless steel construction
• •Viton O-ring seal for reliable performance
• •Prevents fuel return and pressure loss

**Fitment:** 2004.5-2010 Chevy GMC 6.6 Duramax