Exhaust Valve Gasket Kit for Arctic Cat Fire Cat 500/600 EFI/Early Bird (2003-2006)

Material Construction High-temperature compressed graphite composite with perforated steel core for maximum blowout resistance under high exhaust pressure Continuous Operating Temperature Rating -40°F to 1200°F service range, engineered to withstand repeated heat cycles without cracking, shrinking, or losing seal integrity Kit Component Count 8 total sealing pieces: 2 exhaust valve base gaskets, 2 valve housing o-rings, 4 mounting bolt sealing washers to fully service both engine cylinders OEM Replacement Cross-Reference Direct fit replacement for Arctic Cat OEM part numbers 3006-527, 3006-528, and 0630-202, no cutting or modification required for installation Compressed Gasket Thickness 0.040 inch (1.02mm) uniform compressed thickness to maintain factory-specified exhaust valve clearance and consistent seal pressure Surface Coating Non-stick moly-graphite coating on all gasket faces to prevent adhesion to cylinder heads and valve housings for simplified future disassembly Recommended Installation Torque 8–10 ft-lbs for valve housing mounting fasteners, applied in a crisscross tightening sequence to ensure even compression across seal surfaces Chemical Resistance Rating Impervious to two-stroke injection oil, unburned fuel residues, exhaust soot, and incidental coolant exposure to prevent premature seal degradation Aftermarket Component Compatibility Works with both stock OEM exhaust valve assemblies and common aftermarket performance exhaust valve upgrades for listed Fire Cat models Seal Pressure Rating 200 PSI maximum continuous exhaust pressure rating to prevent leaks during high-RPM wide-open-throttle operation