{"product_id":"performance-radiator-with-shroud-for-buick-lesabre-1971-1990-3-0l-3-8l-4-1l-5-0l","title":"Performance Radiator with Shroud for Buick LeSabre (1971-1990) 3.0L 3.8L 4.1L 5.0L","description":"\u003ch2\u003eHigh-Efficiency Performance Radiator with Shroud for 1971-1990 Buick LeSabre\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The direct-fit all-aluminum performance radiator replaces the failure-prone factory cooling unit on the 1971-1990 Buick LeSabre to eliminate thermal runaway and maintain stable operating temperatures under heavy load.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Buick LeSabre Cooling Vulnerabilities\u003c\/h3\u003e\n\u003cp\u003eFactory cooling systems on classic \u003cstrong\u003eGM B-body\u003c\/strong\u003e and \u003cstrong\u003eGM H-body\u003c\/strong\u003e LeSabre models relied on copper-brass cores prone to solder degradation or later-model crimped plastic end tanks susceptible to stress cracking along thermal cycles. Coupled with deteriorating belt-driven clutch fans that drop volumetric airflow at idle, original equipment struggles to extract heat generated by the \u003cstrong\u003eBuick V6\u003c\/strong\u003e (3.0L, 3.8L, 4.1L) and \u003cstrong\u003eOldsmobile 307 V8\u003c\/strong\u003e (5.0L) engines. Over time, internal calcification and external fin oxidation create severe heat soak, elevated transmission fluid temperatures, and risk of blown head gaskets.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis drop-in performance package resolves thermal bottlenecks with an all-aluminum, furnace-brazed core engineered for maximum heat dissipation. TIG-welded aluminum end tanks eliminate OEM crimp seals and plastic rupture points entirely. A matched aluminum fan shroud forces high-CFM electric fan draw across the full fin cross-section rather than allowing dead zones in corner matrix areas. Designed to interchange with \u003cstrong\u003eOE part # DPI161\u003c\/strong\u003e and \u003cstrong\u003eCU161\u003c\/strong\u003e, the assembly incorporates integrated transmission cooler fittings to maintain optimal hydraulic line pressure and fluid stability.\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;\"\u003e1971-1990 Buick LeSabre\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;\"\u003eBuick V6 (LN7, LD5, LC4) \u0026amp; Olds 307 V8 (LV2) \/ GM B-Body, H-Body\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;\"\u003e110-170 hp \/ 190-255 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;\"\u003eCC161, MC161, DPI161, 161, CU161, 3023837, 3023838, 52453863\u003c\/td\u003e\n\u003c\/tr\u003e\n\u003c\/table\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1971-1990 Buick LeSabre 3.0L V6\u003c\/li\u003e\n  \u003cli\u003e1971-1990 Buick LeSabre 3.8L V6\u003c\/li\u003e\n  \u003cli\u003e1971-1990 Buick LeSabre 4.1L V6\u003c\/li\u003e\n  \u003cli\u003e1971-1990 Buick LeSabre 5.0L V8\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions\u003c\/h3\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this fit the GM B-body LeSabre?\u003c\/strong\u003e\u003cbr\u003e Yes, this is a direct fit for the 1971-1990 Buick LeSabre equipped with the Buick V6 or Oldsmobile 307 V8 engine.\u003c\/p\u003e\n\u003cp\u003e\u003cstrong\u003eDoes this radiator accommodate automatic transmission fluid lines?\u003c\/strong\u003e\u003cbr\u003e Yes, it features integrated internal transmission cooler bungs compatible with factory inverted flare lines.\u003c\/p\u003e\n\n\u003ch3\u003eThe Buick Cruiser Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered for full-size American cruisers, this heavy-duty cooling package stabilizes coolant temperatures under sustained highway speeds and stop-and-go cruising to safeguard classic GM drivetrains.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":50593887420664,"sku":"DS-EM8P2E7IA","price":320.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-radiator-with-shroud-for-buick-lesabre-1971-1990-3-0l-3-8l-4-1l-5-0l-1.jpg?v=1790052491","url":"https:\/\/performancechiptuning.com\/products\/performance-radiator-with-shroud-for-buick-lesabre-1971-1990-3-0l-3-8l-4-1l-5-0l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}