{"product_id":"performance-radiator-with-shroud-for-gmc-sonoma-1991-1993-4-3l","title":"Performance Radiator with Shroud for GMC Sonoma (1991-1993) 4.3L","description":"\u003ch2\u003eHigh-Efficiency All-Aluminum Performance Radiator with Shroud for 1991-1993 GMC Sonoma\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Radiator with Shroud replaces the failure-prone OEM plastic-tank radiator on the 1991-1993 GMC Sonoma to eliminate thermal throttling and prevent cooling system failure under heavy load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock GMC Sonoma Cooling System Vulnerability\u003c\/h3\u003e\n\u003cp\u003eFactory radiators equipped on the first-generation \u003cstrong\u003eGMT325\u003c\/strong\u003e chassis utilize crimped composite plastic end tanks sealed to the core with elastomeric gaskets. Decades of thermal cycling, pressure spikes, and engine vibration degrade these seams, leading to brittle neck fractures, gasket blowout, and catastrophic coolant loss. Furthermore, the stock mechanical clutch fan generates parasitic drag on the \u003cstrong\u003e4.3L Vortec V6\u003c\/strong\u003e while struggling to pull adequate static CFM during low-speed crawling or extended idling, resulting in severe heat soak.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis direct-fit cooling upgrade replaces fragile plastic tanks with a 100% TIG-welded, aircraft-grade all-aluminum construction. Featuring an optimized tube-and-fin core, it delivers increased coolant capacity and superior thermal dissipation compared to worn factory units. The integrated aluminum fan shroud directs high-velocity airflow uniformly across the entire fin density, while the matched electric cooling fan provides consistent CFM on demand without robbing horsepower from your \u003cstrong\u003eLB4\u003c\/strong\u003e or \u003cstrong\u003eL35\u003c\/strong\u003e engine.\u003c\/p\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; margin-bottom: 20px;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eFitment\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e1991-1993 GMC Sonoma\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eEngine \/ Chassis\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e4.3L Vortec V6 (LB4\/L35) \/ \u003cstrong\u003eGMT325\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eStock Output\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003e160 hp \/ 235 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003cth style=\"padding:10px; text-align: left; border: 1px solid #e0e0e0;\"\u003eReplaces OEM Part #\u003c\/th\u003e\n\u003ctd style=\"padding:10px; border: 1px solid #e0e0e0;\"\u003eN\/A\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1991 GMC Sonoma Base \/ SLE 4.3L V6\u003c\/li\u003e\n  \u003cli\u003e1992 GMC Sonoma Base \/ SLE 4.3L V6\u003c\/li\u003e\n  \u003cli\u003e1993 GMC Sonoma Base \/ SLE 4.3L V6\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the GMT325 Sonoma?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1991-1993 GMC Sonoma equipped with the \u003cstrong\u003e4.3L Vortec V6\u003c\/strong\u003e engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes the electric fan require custom bracket fabrication?\u003c\/strong\u003e\u003cbr\u003e No, the electric fan mounts directly to the included custom-fitted aluminum shroud, utilizing factory mounting locations in the core support.\u003c\/p\u003e\n\n\u003ch3\u003eThe GMC Truck Standard\u003c\/h3\u003e\n\u003cp\u003eBuilt to handle harsh utility cycles, heavy bed loads, and towing stress, this heavy-duty aluminum assembly ensures rock-solid operating temperatures when standard radiators tap out.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50593926217976,"sku":"DS-ECD1JQSS2","price":362.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-radiator-with-shroud-for-gmc-sonoma-1991-1993-4-3l-1.jpg?v=1790052988","url":"https:\/\/performancechiptuning.com\/products\/performance-radiator-with-shroud-for-gmc-sonoma-1991-1993-4-3l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}