AEM Adjustable Fuel Pressure Regulator Rebuild Kit - 25-392

Is your fuel pressure hunting at idle or failing to hold steady under load? Often, the issue isn't the regulator housing itself, but a worn internal diaphragm. The AEM 25-392 Rebuild Kit is the official service solution to restore your AEM adjustable fuel pressure regulator to factory-perfect performance.

Fitment: AEM Regulator Compatibility

This kit is engineered to service a wide range of AEM billet adjustable fuel pressure regulators. It is compatible with the following AEM regulator series:

• AEM High-Flow Adjustable Fuel Pressure Regulators: 25-300BK, 25-301BK, 25-302BK, 25-303BK, 25-304BK, 25-305BK
• Universal Adjustable Regulators utilizing the standard AEM diaphragm design.
• Note: Designed for bypass-style regulators. Please verify your specific AEM regulator model number if you are running a high-pressure or specialty racing unit.

Why Service Your Regulator?

• Restores Factory Accuracy: Replaces the aging diaphragm that is prone to stretching or micro-tearing over time, ensuring precise fuel pressure control.
• Complete Service Pack: Includes the high-pressure diaphragm, the precision-machined return orifice, and the necessary Viton O-rings for a leak-free seal.
• Prevents Lean Conditions: A simple, cost-effective way to ensure your engine receives consistent fuel delivery, protecting your performance build from erratic pressure spikes.

Package Contents:

• (1) Genuine AEM Replacement Diaphragm
• (1) Precision Return Orifice
• (1) High-Temp Viton O-Ring

Maintain your fuel system’s reliability. If you need assistance verifying fitment for your specific AEM setup, our team at NZ Air Filter is here to help.