{"product_id":"performance-water-pump-timing-chain-head-gasket-kit-for-jeep-grand-cherokee-2004-2007-4-7l","title":"Performance Water Pump Timing Chain \u0026 Head Gasket Kit for Jeep Grand Cherokee (2004-2007) 4.7L","description":"\u003ch2 style=\"font-size: clamp(18px, 3vw, 21px); margin-bottom: 15px; line-height: 1.3;\"\u003eHeavy-Duty Timing Chain, Water Pump \u0026amp; Head Gasket Master Rebuild Kit for 2004-2007 Jeep Grand Cherokee (WJ \/ WK)\u003c\/h2\u003e\n\n\u003cp\u003e\u003cstrong\u003eWhat it Does:\u003c\/strong\u003e The complete overhaul kit refreshes the entire valve timing, cooling, and cylinder sealing system on the 2004-2007 Grand Cherokee to restore compression, resolve chain slack, and prevent catastrophic thermal engine failure.\u003c\/p\u003e\n\n\u003ch3\u003eThe Stock Jeep Grand Cherokee Timing \u0026amp; Thermal Management Weakness\u003c\/h3\u003e\n\u003cp\u003eThe Chrysler \u003cstrong\u003e4.7L PowerTech\u003c\/strong\u003e SOHC V8 engine utilizes an iron block paired with aluminum cylinder heads, creating severe differential thermal expansion under load. The factory composite head gaskets break down under repeated heat cycles, resulting in combustion leaks, coolant contamination, and cylinder head warping. Simultaneously, the factory multi-stage timing system relies on nylon-faced tensioners and cast guide rails that fatigue with age. As nylon tensioner shoes disintegrate, debris drops directly into the oil pan, clogging the pickup screen while timing chains stretch—causing cam-to-crank synchronization codes (P0016), valvetrain clatter, and eventual valve-to-piston contact.\u003c\/p\u003e\n\n\u003ch3\u003eThe Engineering Solution\u003c\/h3\u003e\n\u003cp\u003eThis master rebuild package integrates heavy-duty Multi-Layer Steel (MLS) head gaskets that maintain an elastic seal against thermal distortion, matched with high-grade replacement cylinder head torque-to-yield hardware. The timing drive features pre-stretched link-belt secondary and primary chains, hardened 25-tooth crank and 50-tooth idler sprockets, and reinforced primary and secondary hydraulic tensioners to eliminate lash. A high-efficiency oil pump is designed to ensure oil flow to overhead cams, while an OE-specification cast-impeller water pump ensures uniform coolant circulation to stabilize operating temperatures across all combustion chambers.\u003c\/p\u003e\n\n\u003ch3\u003eWhat's Included\u003c\/h3\u003e\n\u003cul\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 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 O-rings\u003c\/li\u003e\n  \u003cli\u003e1 Other Small Gaskets\u003c\/li\u003e\n  \u003cli\u003e28 Cylinder Head Bolts (20 Long Bolts, 8 Short Bolts)\u003c\/li\u003e\n  \u003cli\u003e1 Timing Chain Lower (70 Links)\u003c\/li\u003e\n  \u003cli\u003e2 Timing Chain (106 Links-Secondary 2 Required)\u003c\/li\u003e\n  \u003cli\u003e1 Tensioner Right (Secondary Tensioner)\u003c\/li\u003e\n  \u003cli\u003e1 Tensioner Left (Secondary Tensioner)\u003c\/li\u003e\n  \u003cli\u003e1 Tensioner Primary (Tensioner \u0026amp; Guide Plate)\u003c\/li\u003e\n  \u003cli\u003e2 Guide Rail (Tensioner Rail 2 Required)\u003c\/li\u003e\n  \u003cli\u003e2 Guide Rail (Fixed Rail 2 Required)\u003c\/li\u003e\n  \u003cli\u003e1 Sprocket Right (30 Teeth With Jtec Ring)\u003c\/li\u003e\n  \u003cli\u003e1 Sprocket Left (30 Teeth Has No Ring)\u003c\/li\u003e\n  \u003cli\u003e1 Crank Sprocket (25 Teeth)\u003c\/li\u003e\n  \u003cli\u003e1 Idler Sprocket (50 Teeth Primary)\u003c\/li\u003e\n  \u003cli\u003e1 Idler Sprocket (Secondary-Dual 30\/30 Teeth)\u003c\/li\u003e\n  \u003cli\u003e1 Engine Water Pump\u003c\/li\u003e\n  \u003cli\u003e1 Oil Pump\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: solid font-size: min-width:\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;\"\u003e2004-2007 Jeep Grand Cherokee\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\u003e4.7L PowerTech V8\u003c\/strong\u003e \/ \u003cstrong\u003eWJ \/ WK\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;\"\u003e235 hp \/ 305 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;\"\u003e53020827AB, HS26157PT-1, HS54237A, AW7163\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\u003e2004 Jeep Grand Cherokee (WJ) 4.7L V8\u003c\/li\u003e\n  \u003cli\u003e2005-2007 Jeep Grand Cherokee (WK) 4.7L V8\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 WJ \/ WK Grand Cherokee?\u003c\/h4\u003e\n\u003cp\u003eYes, this is a direct fit for the 2004-2007 Jeep Grand Cherokee equipped with the \u003cstrong\u003e4.7L PowerTech\u003c\/strong\u003e engine. It does not fit the 3.7L V6, 5.7L HEMI V8, or 6.1L SRT8 engines.\u003c\/p\u003e\n\n\u003ch4\u003eWhich reluctor profile does the right-hand camshaft sprocket use?\u003c\/h4\u003e\n\u003cp\u003eThe included right-hand camshaft gear features the 30-tooth JTEC-pattern tone ring designed for matching factory camshaft position sensor calibration.\u003c\/p\u003e\n\n\u003ch3\u003eThe Jeep Standard\u003c\/h3\u003e\n\u003cp\u003eEngineered to handle sustained trail use and severe-duty towing conditions, this kit restores structural compression integrity and valvetrain synchronization for long-term off-road and highway reliability.\u003c\/p\u003e","brand":"VelocityMax","offers":[{"title":"Default Title","offer_id":67545337495800,"sku":"DS-ETUUJU13M","price":249.95,"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-jeep-grand-cherokee-2004-2007-4-7l-1.jpg?v=1790722015","url":"https:\/\/performancechiptuning.com\/products\/performance-water-pump-timing-chain-head-gasket-kit-for-jeep-grand-cherokee-2004-2007-4-7l","provider":"Performance Chip Tuning","version":"1.0","type":"link"}