Fuelab Diaphragm & O-Ring Kit for 515xx/525xx Regulators Large Seat

Fuelab Diaphragm & O-Ring Kit for 515xx/525xx Regulators — Large Seat Restore peak performance with the Fuelab Diaphragm & O-Ring Kit designed for 515xx and 525xx series regulators (large seat). This OEM-quality rebuild kit contains precision diaphragms and durable O-rings to ensure reliable fuel pressure control and leak-free operation. Compatibility: Fits Fuelab 515xx and 525xx series regulators with large seat configuration. Contents: Replacement diaphragm(s) and a full set of O-rings for a complete rebuild. Quality construction: High-grade materials withstand fuel, heat, and long-term use to maintain regulator integrity. Easy installation: Simple swap-in parts for quick maintenance and minimal downtime. Benefits: Restores accurate fuel pressure, prevents leaks, improves drivability and extends regulator life. Ideal for performance and maintenance applications, this kit helps keep your fuel system functioning at factory or race-ready levels. Replace worn components on schedule to avoid regulator failure and inconsistent fuel delivery. Keywords: Fuelab diaphragm kit, 515xx regulator rebuild, 525xx O-ring kit, large seat regulator repair, fuel pressure regulator maintenance.