{"product_id":"performance-water-pump-timing-chain-head-gasket-kit-for-buick-lacrosse-2011-2016-2-4l","title":"Performance Water Pump Timing Chain \u0026 Head Gasket Kit for Buick LaCrosse (2011-2016) 2.4L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eComplete Timing Chain, Water Pump \u0026amp; Head Gasket Overhaul Kit for 2011-2016 Buick LaCrosse (Epsilon II)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The Performance Timing Chain, Water Pump, and MLS Head Gasket Kit provides a complete mechanical refresh for the 2011-2016 Buick LaCrosse 2.4L to restore camshaft-to-crankshaft synchronization, eliminate cooling circuit failures, and are designed to ensure high-compression cylinder sealing.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Buick LaCrosse Valvetrain \u0026amp; Cooling Vulnerabilities\u003c\/h3\u003e\n\u003cp\u003eThe \u003cstrong\u003e2.4L Ecotec\u003c\/strong\u003e platform utilized in the \u003cstrong\u003eEpsilon II\u003c\/strong\u003e LaCrosse frequently suffers from timing chain stretch and oil-pressure-dependent tensioner collapse. Chain slack rapidly chews through nylon guide rails, throwing camshaft phase codes (P0016\/P0017) and risking catastrophic piston-to-valve contact. Simultaneously, internal water pump seals degrade over continuous thermal cycles, while factory cylinder head gaskets are vulnerable to micro-fretting and coolant weeping between the water jacket and combustion chambers.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis master engine overhaul kit addresses core \u003cstrong\u003eEcotec\u003c\/strong\u003e failure modes by integrating high-tensile link-belt timing and balance shaft chains paired with hardened sprockets and upgraded hydraulic tensioners. The kit includes fresh Variable Valve Timing (VVT) actuator components to restore instant cam phase authority. Sealing is handled by a premium Multi-Layer Steel (\u003cstrong\u003eMLS\u003c\/strong\u003e) head gasket that absorbs block deflection and cyclic thermal expansion. Accompanied by a precision-machined mechanical water pump and a full complement of Viton valve stem seals and peripheral gaskets, this assembly restores factory compression and timing stability.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\u003e\n  \u003cli\u003e1 Timing Chain (148 Links)\u003c\/li\u003e\n  \u003cli\u003e1 Timing Chain Tensioner\u003c\/li\u003e\n  \u003cli\u003e2 VVT Camshaft Gears (Exhaust)\u003c\/li\u003e\n  \u003cli\u003e2 Camshaft Position Actuators\u003c\/li\u003e\n  \u003cli\u003e2 Variable Valve Timing Solenoids\u003c\/li\u003e\n  \u003cli\u003e1 Crank Sprocket (23 \u0026amp; 42 Teeth)\u003c\/li\u003e\n  \u003cli\u003e1 Guide Rail (Tensioner Guide, Left and Upper for Cam Chain)\u003c\/li\u003e\n  \u003cli\u003e1 Timing Chain Balance Shaft (134 Links)\u003c\/li\u003e\n  \u003cli\u003e1 Balance Shaft Tensioner\u003c\/li\u003e\n  \u003cli\u003e1 Balance Shaft Sprocket (Intake \u0026amp; Exhaust Side)\u003c\/li\u003e\n  \u003cli\u003e1 Guide Rail Balance Shaft (Upper, Left, and Right)\u003c\/li\u003e\n  \u003cli\u003e1 Water Pump with Gasket\u003c\/li\u003e\n  \u003cli\u003e1 Timing Cover Gasket Set\u003c\/li\u003e\n  \u003cli\u003e1 Multiple Layers Steel (MLS) Head Gasket\u003c\/li\u003e\n  \u003cli\u003e1 Valve Cover Gasket\u003c\/li\u003e\n  \u003cli\u003e1 Set Valve Stem Seals\u003c\/li\u003e\n  \u003cli\u003e1 Intake Manifold Gasket\u003c\/li\u003e\n  \u003cli\u003e1 Exhaust Manifold Gasket\u003c\/li\u003e\n  \u003cli\u003e1 Front Camshaft Seal\u003c\/li\u003e\n  \u003cli\u003e1 Set O-Rings\u003c\/li\u003e\n  \u003cli\u003e1 Set Miscellaneous Small Gaskets\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;\"\u003e2011-2016 Buick LaCrosse\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;\"\u003e2.4L Ecotec (LAF \/ LEA) \/ Epsilon II\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;\"\u003e182 hp \/ 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;\"\u003e9-4201S, 12680750, HS26517PT\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\u003e2011-2016 Buick LaCrosse 2.4L Inline-4 (Gasoline \/ eAssist)\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 II LaCrosse?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2011-2016 Buick LaCrosse equipped with the \u003cstrong\u003e2.4L Ecotec\u003c\/strong\u003e (LAF\/LEA) engine. \u003cstrong\u003eDoes not fit models equipped with the 3.6L V6 (LLT or LFX) engines.\u003c\/strong\u003e\u003c\/p\u003e\n\n\u003ch4\u003eDo I need to replace the balance shaft assembly at the same time?\u003c\/h4\u003e\n\u003cp\u003eYes, because the balance shaft chain and sprockets sit directly behind the primary camshaft drive, renewing the entire assembly during a single service is required to prevent secondary chain failure and maintain smooth engine balance.\u003c\/p\u003e\n\n\u003ch3\u003eThe Buick Reliability Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to restore whisper-quiet valvetrain operation and dependable daily driving performance, this comprehensive rebuild kit maintains the balance of smooth executive comfort and factory mechanical reliability.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67545340051704,"sku":"DS-EXJKOEKBX","price":254.95,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0800\/1290\/2648\/files\/performance-water-pump-timing-chain-head-gasket-kit-for-buick-lacrosse-2011-2016-2-4l-1.jpg?v=1790722077","url":"https:\/\/performancechiptuning.com\/products\/performance-water-pump-timing-chain-head-gasket-kit-for-buick-lacrosse-2011-2016-2-4l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}