Gasket Set for Arctic Cat Z 440/ESR/LX (1997-2006)

Trim Level Fitment Confirmation Exact direct fit for all Z 440 base, ESR, and LX trim levels produced across 1997 through 2006 model years Primary Gasket Material Construction Multi-layer composite blend of nitrile rubber, aramid fiber, and perforated steel core for high-load cylinder and crankcase sealing Total Included Component Count 22 precision die-cut gaskets and sealing elements for complete top-end and upper crankcase service OEM Part Number Cross-Compatibility Direct replacement for Arctic Cat OEM part numbers 0636-413, 0636-189, and Winderosa aftermarket 710197 gasket sets Operating Temperature Tolerance Rated for sustained use between -40°F and 450°F to withstand arctic riding conditions and peak combustion temperatures Cylinder Compression Seal Rating Engineered to seal static cylinder compression up to 180 PSI, suitable for stock and mildly modified Z 440 engines Fluid and Fuel Compatibility Resistant to swelling and degradation from 10% ethanol blended gasoline, two-stroke injection oil, and ethylene glycol antifreeze Installation Sealant Requirement Most gaskets are designed for dry installation; a thin 1/8" bead of high-temp RTV is only recommended for crankcase split seams per factory service guidelines Compressed Gasket Thickness Calibrated to 0.030" compressed thickness for cylinder base and head gaskets to maintain factory specified squish clearance Fastener Torque Compatibility Manufactured to maintain consistent seal under factory specified 18-22 ft-lb cylinder head fastener torque applied in the OEM torque sequence