{"product_id":"performance-radiator-for-pontiac-grand-prix-1997-2003-3-1l-3-8l","title":"Performance Radiator for Pontiac Grand Prix (1997-2003) 3.1L 3.8L","description":"\u003ch2\u003eDirect-Fit All-Aluminum 3-Row Performance Radiator for 1997-2003 Pontiac Grand Prix\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e Upgrades the factory cooling circuit with a high-capacity 3-row all-aluminum core designed to eliminate heat soak and handle high thermal loads in naturally aspirated and supercharged V6 applications.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Grand Prix Plastic End Tank Fatigue\u003c\/h3\u003e\n\u003cp\u003eFactory W-Body radiators rely on thin single-row cores paired with crimped composite plastic end tanks. Over repeated thermal expansion cycles, these plastic tanks become brittle, developing stress fractures along the tank seams and radiator hose necks. On supercharged L67 applications, elevated coolant and transmission temperatures quickly exceed the thermal rejection threshold of the stock core, inducing heat soak and power derating.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eConstructed entirely from aircraft-grade AA5052 aluminum, this crossflow unit features a 3-row racing tube core that vastly increases coolant capacity and surface area dissipation. 100% TIG-welded seams replace failure-prone plastic crimps to withstand elevated operating pressures. The unit integrates an internal 5\/8-18UNF transmission fluid cooler and includes a pressure-rated radiator cap for direct bolt-in fitment.\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;\"\u003e1997-2003 Pontiac Grand Prix\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;\"\u003e3.1L V6 (L82\/LG8), 3.8L V6 (L36), 3.8L SC V6 (L67) \/ W-Body\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;\"\u003e160–240 hp \/ 185–280 lb-ft\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eCore Dimensions\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e14-7\/8\" H x 30-3\/7\" W (3-Row AA5052 Aluminum)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eInlet \/ Outlet\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003e1-1\/3\" (Driver Side) \/ 1-5\/16\" (Passenger Side)\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003eTransmission Cooler\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\u003eInternal 5\/8-18UNF Fitting\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003ctr style=\"background-color: #f9f9f9;\"\u003e\n\u003ctd style=\"padding:8px;\"\u003e\u003cstrong\u003ePart Number\u003c\/strong\u003e\u003c\/td\u003e\n\u003ctd style=\"padding:8px;\"\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\u003e1997-2003 Pontiac Grand Prix SE (3.1L V6 OHV L82 \/ LG8)\u003c\/li\u003e\n  \u003cli\u003e1997-2003 Pontiac Grand Prix GT (3.8L V6 OHV Naturally Aspirated L36)\u003c\/li\u003e\n  \u003cli\u003e1997-2003 Pontiac Grand Prix GTP (3.8L V6 OHV Supercharged L67)\u003c\/li\u003e\n  \u003cli\u003eAutomatic transmission models with 5\/8-18UNF cooler lines\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eThe Pontiac Performance Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to support both stock restorations and modified supercharged L67 builds, this cooling system maintains rock-solid operating temperatures across continuous boost runs and heavy load demands.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50426231423224,"sku":"DS-E052M9R4Z","price":219.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-radiator-for-pontiac-grand-prix-1997-2003-3-1l-3-8l-1.jpg?v=1788397458","url":"https:\/\/performancechiptuning.com\/fr\/products\/performance-radiator-for-pontiac-grand-prix-1997-2003-3-1l-3-8l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}