{"product_id":"exhaust-manifold-for-chevrolet-malibu-2009-2014-2-4l","title":"Exhaust Manifold for Chevrolet Malibu (2009-2014) 2.4L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eDirect-Fit Cast Iron Exhaust Manifold for 2009-2014 Chevrolet Malibu (Epsilon)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The replacement exhaust manifold securely directs spent exhaust pulses from the cylinder head into the downpipe on the 2009-2014 Chevrolet Malibu to eliminate pre-catalytic leaks and restore proper engine management calibration.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Chevrolet Malibu Thermal Stress Fractures\u003c\/h3\u003e\n\u003cp\u003eThe factory cast manifold on the \u003cstrong\u003eGM Ecotec 2.4L\u003c\/strong\u003e engine is vulnerable to cyclic thermal fatigue. Continuous heat cycles create hairline fractures—predominantly along the center runners and flange welds. This failure introduces ambient air ahead of the primary oxygen sensor, skewing air-fuel trim data and triggering false lean codes (such as P0171), while causing audible cold-start ticking and exhaust fumes entering the cabin HVAC system.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eEngineered from high-grade ductile cast iron, this manifold delivers superior thermal expansion resistance to prevent cracking under high EGT conditions. The unit features precision-machined oval port geometry that matches factory cylinder head porting, preventing flow restriction and turbulence. Heavy-duty mounting flanges ensure uniform gasket compression across all exhaust ports to maintain an airtight seal without deck warpage.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Cast Iron Exhaust Manifold\u003c\/li\u003e\n  \u003cli\u003e1 Multi-Layer Steel Manifold Gasket\u003c\/li\u003e\n  \u003cli\u003e1 Downpipe Flange Gasket\u003c\/li\u003e\n  \u003cli\u003e3 Downpipe Flange Bolts\u003c\/li\u003e\n  \u003cli\u003e3 Retaining Nuts\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eTechnical Specifications\u003c\/h3\u003e\n\u003cdiv style=\"overflow-x: auto; margin-bottom: 20px;\"\u003e\n  \u003ctable width=\"100%\" style=\"border-collapse: collapse; border: 1px solid #e0e0e0; font-size: 14px; min-width: 300px;\"\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;\"\u003e2009-2014 Chevrolet Malibu\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;\"\u003e\n\u003cstrong\u003e2.4L Ecotec (LE5 \/ LEA \/ LUK)\u003c\/strong\u003e \/ \u003cstrong\u003eEpsilon Platform\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;\"\u003e169-182 hp \/ 160-172 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;\"\u003e\n\u003cstrong\u003e674-937\u003c\/strong\u003e, \u003cstrong\u003e12630741\u003c\/strong\u003e, \u003cstrong\u003e12643496\u003c\/strong\u003e, \u003cstrong\u003e12615133\u003c\/strong\u003e\n\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/table\u003e\n\u003c\/div\u003e\n\n\u003ch3\u003eCompatibility\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e2009-2014 Chevrolet Malibu 2.4L\u003c\/li\u003e\n  \u003cli\u003e2010-2015 Buick LaCrosse 2.4L\u003c\/li\u003e\n  \u003cli\u003e2011-2015 Buick Regal 2.4L\u003c\/li\u003e\n  \u003cli\u003e2012-2015 Buick Verano 2.4L\u003c\/li\u003e\n  \u003cli\u003e2009-2010 Pontiac G6 2.4L\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch3\u003eFrequently Asked Questions \u0026amp; Fitment Warnings\u003c\/h3\u003e\n\u003ch4\u003eDoes this fit the Epsilon Malibu?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct bolt-on replacement for 2009-2014 Chevrolet Malibu models equipped with the \u003cstrong\u003eGM Ecotec 2.4L\u003c\/strong\u003e 4-cylinder engine.\u003c\/p\u003e\n\n\u003ch4\u003eWhat is the recommended installation procedure to prevent future leaks?\u003c\/h4\u003e\n\u003cp\u003eScrape the cylinder head deck completely clean, apply penetrating oil to all factory hardware prior to removal, and torque the manifold nuts progressively from the center fasteners outward to avoid warping the flange.\u003c\/p\u003e\n\n\u003ch3\u003eThe Chevrolet Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to restore factory emissions integrity and cabin air safety, this manifold delivers dependable, leak-free operation for daily fleet and commuter service.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67896184373496,"sku":"DS-ETYJTCA0A","price":80.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/exhaust-manifold-for-chevrolet-malibu-2009-2014-2-4l-1.jpg?v=1793293647","url":"https:\/\/performancechiptuning.com\/fr\/products\/exhaust-manifold-for-chevrolet-malibu-2009-2014-2-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}