{"product_id":"aluminum-radiator-for-gmc-suburban-1955-1959-3-8l-4-3l-4-6l-5-3l-5-7l","title":"Aluminum Radiator for GMC Suburban (1955-1959) 3.8L 4.3L 4.6L 5.3L 5.7L","description":"\u003ch2\u003eHigh-Efficiency 3-Row Aluminum Radiator for 1955-1959 GMC Suburban\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003ePrimary Function:\u003c\/strong\u003e Direct-replacement aluminum heat exchanger engineered to eliminate cooling bottlenecks and stabilize coolant temperatures in 1955–1959 GMC Suburbans running period-correct powertrains or modern V8 conversions.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Suburban Thermal Dissipation Bottleneck\u003c\/h3\u003e\n\u003cp\u003eOriginal factory copper-brass radiators degrade from internal solder bloom, calcified passages, and separated fin matrixes. These vintage cores utilize narrow fluid passages prone to restriction, leading to localized boiling, vapor lock, and rapid thermal saturation during sustained highway driving, heavy hauling, or when adapting higher-displacement V8 engines into the classic chassis.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eBuilt with a furnace-brazed 3-row aluminum tube-and-fin core, this assembly features precision TIG-welded tanks that eliminate failure-prone crimped gaskets and lead solder joints. The high-grade aluminum alloy accelerates conductive heat rejection across the airflow boundary, maximizing delta-T thermal dissipation, preventing cavitation, and maintaining structural core integrity under elevated cooling system pressures.\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;\"\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eFitment\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1955-1959 GMC Suburban\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eEngine \/ Chassis\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eInline-6 \/ Small Block V8 (3.8L–5.7L) \/ Task Force Series 100\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eStock Output\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e130–185 hp \/ 210–275 lb-ft (Period Baseline)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eDPI 5559\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1955–1959 GMC Suburban 3.8L\u003c\/li\u003e\n  \u003cli\u003e1955–1959 GMC Suburban 4.3L\u003c\/li\u003e\n  \u003cli\u003e1955–1959 GMC Suburban 4.6L\u003c\/li\u003e\n  \u003cli\u003e1955–1959 GMC Suburban 5.3L\u003c\/li\u003e\n  \u003cli\u003e1955–1959 GMC Suburban 5.7L\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe GMC Heavy-Haul Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for utilitarian endurance, the reinforced side brackets resist frame twist and road vibration, delivering dependable heat rejection whether towing equipment or navigating dense stop-and-go conditions.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50497937801464,"sku":"DS-EHCRUEXRB","price":229.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/aluminum-radiator-for-gmc-suburban-1955-1959-3-8l-4-3l-4-6l-5-3l-5-7l-1.jpg?v=1789262621","url":"https:\/\/performancechiptuning.com\/es\/products\/aluminum-radiator-for-gmc-suburban-1955-1959-3-8l-4-3l-4-6l-5-3l-5-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}