Fuelab Diaphragm and O-Ring Kit for 515xx and 525xx Series Regulators; Large Seat (Universal; Some Adaptation May Be Required)

Precise Replacement Kit. The Fuelab Diaphragm and O-Ring Kit for 515xx and 525xx Series Regulators with Large Seat is designed to restore the regulator’s optimal performance by replacing worn or damaged diaphragms and O-rings. This kit ensures proper fuel pressure regulation, which is critical for engine efficiency and reliability in high-performance applications.

Construction and Appearance. The kit features high-quality materials engineered for durability and compatibility with Fuelab regulator models. Components are precision-molded to maintain a proper seal, contributing to consistent fuel delivery without leaks or pressure drops. The finished parts typically have a professional appearance in black rubber or elastomeric material.

Installation. Installation is straightforward and requires only basic mechanical skills without the need for drilling or specialized tools. The kit is designed to fit seamlessly, minimizing downtime during maintenance.

Warranty. This product includes a limited lifetime warranty, providing long-term assurance of quality and performance.

Application. Fits large seat models in the 515xx, 525xx, and 595xx series regulators; offers a universal fit with some adaptation possibly required.

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