{"product_id":"gm-mechanical-engine-fan-18-replacement-style-7-blade-fan","title":"GM Mechanical Engine Fan - 18\" Replacement Style 7-Blade Fan","description":"\u003cp data-start=\"110\" data-end=\"861\" class=\"PDq2pG_selectionAnchorContainer\"\u003e\u003cstrong data-start=\"110\" data-end=\"177\"\u003eReplacement radiator fan blade for various 1965–1973 GM models.\u003c\/strong\u003e This 18\" diameter, 7-blade fan features squared-off blade tips and robust stamped steel construction to match the original configuration for a bolt-on service replacement. Designed for use with a fan clutch (sold separately), the blade delivers dependable cooling performance while restoring a factory-correct under hood appearance. Crafted for restoration projects, it offers period-correct geometry and materials ideal for show-quality and concours restorations while remaining durable for everyday drivers. Restores authentic presentation and helps preserve originality and resale value. Verify fan clutch bolt pattern and center hole diameter for proper fit prior to installation.\u003cspan aria-hidden=\"true\" class=\"PDq2pG_selectionAnchor\"\u003e\u003c\/span\u003e\u003c\/p\u003e\n\u003ch3 data-section-id=\"1abaj0u\" data-start=\"863\" data-end=\"888\"\u003eFeatures and Benefits\u003c\/h3\u003e\n\u003cul data-start=\"890\" data-end=\"1275\"\u003e\n\u003cli data-section-id=\"1mft2aa\" data-start=\"890\" data-end=\"982\"\u003eService replacement blade reproducing original geometry for authentic under hood appearance\u003c\/li\u003e\n\u003cli data-section-id=\"1y7tbxa\" data-start=\"983\" data-end=\"1073\"\u003eStamped steel construction provides durable, OEM-style performance and long service life\u003c\/li\u003e\n\u003cli data-section-id=\"1amc62w\" data-start=\"1074\" data-end=\"1175\"\u003eSquared-off blades, finish, and original rivet pattern deliver show-quality detail for restorations\u003c\/li\u003e\n\u003cli data-section-id=\"1hfeh57\" data-start=\"1176\" data-end=\"1275\"\u003eDesigned for use with a fan clutch to ensure correct clearance and dependable cooling performance\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"858m9l\" data-start=\"1277\" data-end=\"1302\"\u003eTechnical Information\u003c\/h3\u003e\n\u003cul data-start=\"1304\" data-end=\"1562\"\u003e\n\u003cli data-section-id=\"n11445\" data-start=\"1304\" data-end=\"1332\"\u003e\n\u003cstrong data-start=\"1306\" data-end=\"1324\"\u003eQuality Level:\u003c\/strong\u003e Economy\u003c\/li\u003e\n\u003cli data-section-id=\"1xmu9c6\" data-start=\"1333\" data-end=\"1365\"\u003e\n\u003cstrong data-start=\"1335\" data-end=\"1345\"\u003eStyle:\u003c\/strong\u003e Service Replacement\u003c\/li\u003e\n\u003cli data-section-id=\"rinq68\" data-start=\"1366\" data-end=\"1411\"\u003e\u003cstrong data-start=\"1368\" data-end=\"1411\"\u003e7-blade fan with squared-off blade tips\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"1cucaec\" data-start=\"1412\" data-end=\"1430\"\u003e\u003cstrong data-start=\"1414\" data-end=\"1430\"\u003e18\" diameter\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"1b5rsah\" data-start=\"1431\" data-end=\"1475\"\u003e\u003cstrong data-start=\"1433\" data-end=\"1475\"\u003e3-1\/4\" bolt pattern (center to center)\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"kxstuj\" data-start=\"1476\" data-end=\"1509\"\u003e\u003cstrong data-start=\"1478\" data-end=\"1509\"\u003e2-1\/2\" diameter center hole\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"t9hknu\" data-start=\"1510\" data-end=\"1534\"\u003e\u003cstrong data-start=\"1512\" data-end=\"1534\"\u003e4 rivets per blade\u003c\/strong\u003e\u003c\/li\u003e\n\u003cli data-section-id=\"ahimaw\" data-start=\"1535\" data-end=\"1562\"\u003e\u003cstrong data-start=\"1537\" data-end=\"1562\"\u003eReplaces OEM #3947772\u003c\/strong\u003e\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"wa5gf0\" data-start=\"1564\" data-end=\"1587\"\u003eCamaro Applications\u003c\/h3\u003e\n\u003cul data-start=\"1589\" data-end=\"1839\"\u003e\n\u003cli data-section-id=\"1uaon54\" data-start=\"1589\" data-end=\"1623\"\u003e1967–1968 Chevrolet Camaro (327)\u003c\/li\u003e\n\u003cli data-section-id=\"1ti92mb\" data-start=\"1624\" data-end=\"1667\"\u003e1968–1969 Chevrolet Camaro (396 with A\/C)\u003c\/li\u003e\n\u003cli data-section-id=\"5r4ye3\" data-start=\"1668\" data-end=\"1710\"\u003e1969 Chevrolet Camaro (with A\/C and A\/T)\u003c\/li\u003e\n\u003cli data-section-id=\"mj3emc\" data-start=\"1711\" data-end=\"1748\"\u003e1969 Chevrolet Camaro (without A\/C)\u003c\/li\u003e\n\u003cli data-section-id=\"13x7cqc\" data-start=\"1749\" data-end=\"1788\"\u003e1970–1973 Chevrolet Camaro (350, 396)\u003c\/li\u003e\n\u003cli data-section-id=\"d52eo4\" data-start=\"1789\" data-end=\"1839\"\u003e1970–1973 Chevrolet Camaro (6-cylinder with A\/C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1alfnqv\" data-start=\"1841\" data-end=\"1873\"\u003eChevy II \/ Nova Applications\u003c\/h3\u003e\n\u003cul data-start=\"1875\" data-end=\"2153\"\u003e\n\u003cli data-section-id=\"19lb2wk\" data-start=\"1875\" data-end=\"1927\"\u003e1968–1969 Chevrolet Chevy II (6-cylinder with A\/C)\u003c\/li\u003e\n\u003cli data-section-id=\"71n1qj\" data-start=\"1928\" data-end=\"1976\"\u003e1968–1970 Chevrolet Nova (6-cylinder with A\/C)\u003c\/li\u003e\n\u003cli data-section-id=\"sqhoit\" data-start=\"1977\" data-end=\"2025\"\u003e1968–1969 Chevrolet Chevy II Nova (327\/275 HP)\u003c\/li\u003e\n\u003cli data-section-id=\"n53txk\" data-start=\"2026\" data-end=\"2070\"\u003e1969 Chevrolet Nova (350 with A\/C and A\/T)\u003c\/li\u003e\n\u003cli data-section-id=\"1np8x9w\" data-start=\"2071\" data-end=\"2111\"\u003e1970–1971 Chevrolet Nova (V8 with A\/C)\u003c\/li\u003e\n\u003cli data-section-id=\"nbm3po\" data-start=\"2112\" data-end=\"2153\"\u003e1972–1973 Chevrolet Nova (350 with A\/C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1ko4til\" data-start=\"2155\" data-end=\"2206\"\u003eImpala, Bel Air, Biscayne, Caprice Applications\u003c\/h3\u003e\n\u003cul data-start=\"2208\" data-end=\"2650\"\u003e\n\u003cli data-section-id=\"1ar23ec\" data-start=\"2208\" data-end=\"2290\"\u003e1968–1969 Chevrolet Impala, Bel Air, Biscayne, Caprice (396, 427 Hi-Performance)\u003c\/li\u003e\n\u003cli data-section-id=\"1ovc4fr\" data-start=\"2291\" data-end=\"2369\"\u003e1968–1969 Chevrolet Impala, Bel Air, Biscayne, Caprice (6-cylinder with A\/C)\u003c\/li\u003e\n\u003cli data-section-id=\"t41y6n\" data-start=\"2370\" data-end=\"2431\"\u003e1968–1969 Chevrolet Impala, Bel Air, Biscayne, Caprice (V8)\u003c\/li\u003e\n\u003cli data-section-id=\"bcisg3\" data-start=\"2432\" data-end=\"2502\"\u003e1970–1972 Chevrolet Impala, Bel Air, Biscayne, Caprice (V8 with A\/C)\u003c\/li\u003e\n\u003cli data-section-id=\"howed0\" data-start=\"2503\" data-end=\"2581\"\u003e1970–1972 Chevrolet Impala, Bel Air, Biscayne, Caprice (6-cylinder with A\/C)\u003c\/li\u003e\n\u003cli data-section-id=\"1c3vel\" data-start=\"2582\" data-end=\"2650\"\u003e1972–1973 Chevrolet Impala, Bel Air, Caprice (8-cylinder with A\/C)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"1ad63u4\" data-start=\"2652\" data-end=\"2684\"\u003eChevrolet Truck Applications\u003c\/h3\u003e\n\u003cul data-start=\"2686\" data-end=\"2867\"\u003e\n\u003cli data-section-id=\"8axooe\" data-start=\"2686\" data-end=\"2749\"\u003e1969–1972 Chevrolet Pickup Truck (V8 with A\/C and HD cooling)\u003c\/li\u003e\n\u003cli data-section-id=\"yahqz3\" data-start=\"2750\" data-end=\"2809\"\u003e1969–1972 Chevrolet Suburban (V8 with A\/C and HD cooling)\u003c\/li\u003e\n\u003cli data-section-id=\"8n73r7\" data-start=\"2810\" data-end=\"2867\"\u003e1969–1972 Chevrolet Blazer (V8 with A\/C and HD cooling)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"apra9p\" data-start=\"2869\" data-end=\"2895\"\u003eGMC Truck Applications\u003c\/h3\u003e\n\u003cul data-start=\"2897\" data-end=\"3059\"\u003e\n\u003cli data-section-id=\"1s1onmn\" data-start=\"2897\" data-end=\"2954\"\u003e1969–1972 GMC Pickup Truck (V8 with A\/C and HD cooling)\u003c\/li\u003e\n\u003cli data-section-id=\"1cdvfpa\" data-start=\"2955\" data-end=\"3008\"\u003e1969–1972 GMC Suburban (V8 with A\/C and HD cooling)\u003c\/li\u003e\n\u003cli data-section-id=\"j9yymi\" data-start=\"3009\" data-end=\"3059\"\u003e1969–1972 GMC Jimmy (V8 with A\/C and HD cooling)\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003ch3 data-section-id=\"8imf0z\" data-start=\"3061\" data-end=\"3087\"\u003eAdditional Information\u003c\/h3\u003e\n\u003cul data-start=\"3089\" data-end=\"3202\"\u003e\n\u003cli data-section-id=\"2aqq5d\" data-start=\"3089\" data-end=\"3123\"\u003e\n\u003cstrong data-start=\"3091\" data-end=\"3107\"\u003eCenter hole:\u003c\/strong\u003e 2-1\/2\" diameter\u003c\/li\u003e\n\u003cli data-section-id=\"rix71q\" data-start=\"3124\" data-end=\"3178\"\u003e\n\u003cstrong data-start=\"3126\" data-end=\"3154\"\u003eFan clutch bolt pattern:\u003c\/strong\u003e 3-1\/4\" center-to-center\u003c\/li\u003e\n\u003cli data-section-id=\"ht1ck7\" data-start=\"3179\" data-end=\"3202\"\u003e\n\u003cstrong data-start=\"3181\" data-end=\"3198\"\u003eFan diameter:\u003c\/strong\u003e 18\"\u003c\/li\u003e\n\u003c\/ul\u003e","brand":"OER","offers":[{"title":"Default Title","offer_id":45151149031624,"sku":"K193","price":119.99,"currency_code":"CAD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0608\/4109\/9464\/files\/Screenshot2026-07-27124749.png?v=1785181684","url":"https:\/\/www.gasclassics.ca\/products\/gm-mechanical-engine-fan-18-replacement-style-7-blade-fan","provider":"G.A.S. Classics","version":"1.0","type":"link"}