Fel-Pro 25581 Engine Coolant Outlet Gasket

Engine Coolant Outlet Gasket Overview

Fel-Pro 25581 is an engine coolant outlet gasket built for sealing applications across a wide range of older Nissan, Isuzu, Chevrolet, GMC, and Buick Opel vehicles. It uses application-specific materials and a 2-hole design to support a precise seal where the coolant outlet meets the mating surface.

Key Features

• Application-specific gasket material for sealing performance
• 2-hole design for the listed coolant outlet applications
• Engine sealing part from Fel-Pro
• Fits a broad range of classic import and domestic applications

Detailed Description

Fel-Pro 25581 is an engine coolant outlet gasket intended for vehicles that require a 2-hole sealing pattern. The fitment includes 1968-1973 Nissan 510, 1970-1973 Nissan 240Z, 1975-1979 Nissan 620, 1982-1985 Chevrolet S10, and 1984-1991 Isuzu Trooper, along with additional Nissan, Chevrolet, GMC, Isuzu, and Buick Opel applications. This part number, 25581, is used across multiple interchange listings for the same sealing application.

Fel-Pro gaskets are engineered around vehicle-specific sealing needs rather than generic universal dimensions. That approach matters for coolant outlet service because the gasket must maintain a consistent seal at the joint and resist leakage at the mating surface. This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

Common Uses

• Replacing a leaking coolant outlet gasket
• Restoring a seal after coolant service
• Addressing seepage at the outlet-to-engine joint
• Correcting sealing issues on 2-hole coolant outlet designs

Installation Notes

Verify the gasket shape, bolt pattern, and engine application before installation. Clean both mating surfaces thoroughly and inspect the coolant outlet for corrosion, pitting, or warpage that could affect sealing. Confirm the 2-hole configuration matches the removed part and the vehicle listing before assembly.

Quality Assurance

Fel-Pro states that its gaskets use application-specific materials and are built to deliver vehicle sealing performance and durability trusted by professionals.