{"product_id":"honda-k-series-timing-chain-drive-gear-13620-raa-a02","title":"Honda K Series Timing Chain Drive Gear 13620-RAA-A02","description":"\u003cul\u003e\n\u003cli\u003eGenuine Honda Product \u003c\/li\u003e\n\u003cli\u003eDirect Factory Replacement Part \u003c\/li\u003e\n\u003cli\u003eCompatible with K20A, K20Z, K24A, and K24Z Engines \u003c\/li\u003e\n\u003cli\u003eInstalls Behind Crank Pulley and Pulse Plate on Crank \u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003c!-- split --\u003e\n\u003cul class=\"tabs\"\u003e\n\u003cli\u003e\u003ca class=\"active\" href=\"#Description\"\u003eDescription\u003c\/a\u003e\u003c\/li\u003e\n  \u003cli\u003e\u003ca href=\"#Included\"\u003eIncluded\u003c\/a\u003e\u003c\/li\u003e \u003c\/ul\u003e\n\u003cul class=\"tabs-content\"\u003e\n\n\n\u003cli class=\"active\" id=\"Description\"\u003e\n\u003ch3\u003eHonda K Series Timing Chain Drive Gear - 13620-RAA-A02\u003c\/h3\u003e\n\n\u003cp\u003eDoing a timing chain replacement on your K series and you need the crank drive gear? Honda part number 13620-RAA-A02 is the OEM timing chain drive gear that mounts on your crankshaft behind the crank pulley. This is the toothed gear that drives your timing chain. When you're pulling your timing chain cover for a chain replacement or front main seal job, you're removing this gear. Most people reuse the old gear if it's not worn, but if you're rebuilding a high-mileage motor or you've got a stretched chain that wore the teeth, you need a fresh gear. The OEM gear's machined to exact tolerances so your timing chain tension's correct and you don't get timing slip.\u003c\/p\u003e\n\n\u003ch4\u003eHere's Where This Gear Goes\u003c\/h4\u003e\n\n\u003cp\u003eThe timing chain drive gear bolts to your crankshaft behind the \u003ca href=\"https:\/\/www.hybrid-racing.com\/search?\u0026amp;sort_by=relevance\u0026amp;filter.p.vendor=Honda\u0026amp;q=crank%20pulley\" target=\"_blank\"\u003ecrank pulley\u003c\/a\u003e and \u003ca href=\"https:\/\/www.hybrid-racing.com\/products\/honda-k-series-crank-pulse-plate-13622-raa-a01?_pos=1\u0026amp;_sid=e741729d8\u0026amp;_ss=r\" target=\"_blank\"\u003ecrank position sensor trigger wheel (pulse plate)\u003c\/a\u003e. You're pulling your crank pulley off, removing the pulse plate, and then you'll see the timing chain drive gear. The gear's got internal splines that mate with the crankshaft snout. Three bolts hold it to the crank. The timing chain wraps around this gear on the bottom and goes up to your cam gears on top. When your crank spins, this gear drives the timing chain and rotates your camshafts at half crank speed. If the gear's worn or the teeth are damaged, your timing chain can skip and your valves hit your pistons. That's why you replace it if it's worn.\u003c\/p\u003e\n\n\u003ch4\u003eWhen You Actually Need to Replace This Gear\u003c\/h4\u003e\n\n\u003cp\u003eMost K series timing chain jobs don't require replacing the drive gear. If your chain's got normal wear and the gear teeth look good with no pitting or wear, you're reusing the old gear. But if you're rebuilding a motor with 200k+ miles, if your timing chain was really stretched and slapping around, or if you see visible wear on the gear teeth, replace it. Worn teeth mean the chain doesn't sit in the valleys properly and you can get timing slip. You'll also replace this gear if you're doing a K series build and you're upgrading to an aftermarket timing chain setup. Some race builds use different gear ratios or aftermarket chains that require a different drive gear.\u003c\/p\u003e\n\n\u003ch4\u003eInstallation Requires Timing Chain Cover Removal\u003c\/h4\u003e\n\n\u003cp\u003eYou can't get to this gear without pulling your timing chain cover off. You're removing the crank pulley, valve cover, cam gears, timing chain guide, tensioner, and timing chain cover. Once the cover's off, you unbolt the drive gear from the crank. Installation's the reverse - bolt the new gear to the crank with new bolts (or Loctite the old ones if they're in good shape), install your timing chain, set your cam timing, and button everything back up. If you're doing this job, you're already deep into the motor. Don't cheap out on the drive gear if it's worn. A $50 gear's way cheaper than rebuilding a motor after the chain skips and you bend all your valves.\u003c\/p\u003e\n\n\u003ch4\u003eWhat You Get\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003eHonda OEM timing chain drive gear (part number 13620-RAA-A02)\u003c\/li\u003e\n  \u003cli\u003eMounts on crankshaft behind crank pulley and pulse plate\u003c\/li\u003e\n  \u003cli\u003eDrives timing chain from crankshaft to camshaft gears\u003c\/li\u003e\n  \u003cli\u003ePrecision-machined gear teeth for proper chain engagement\u003c\/li\u003e\n  \u003cli\u003eDirect replacement for factory timing chain drive gear\u003c\/li\u003e\n  \u003cli\u003eSame part your engine came with from the factory\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eFits Your Car\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003e2013-2015 Acura ILX\u003c\/li\u003e\n  \u003cli\u003e2007-2012 Acura RDX\u003c\/li\u003e\n  \u003cli\u003e2002-2006 Acura RSX\u003c\/li\u003e\n  \u003cli\u003e2004-2014 Acura TSX\u003c\/li\u003e\n  \u003cli\u003e2003-2012 Honda Accord (K24)\u003c\/li\u003e\n  \u003cli\u003e2002-2005 Honda Civic Si\u003c\/li\u003e\n  \u003cli\u003e2006-2011 Honda Civic Si\u003c\/li\u003e\n  \u003cli\u003e2012-2015 Honda Civic Si\u003c\/li\u003e\n  \u003cli\u003e2002-2014 Honda CR-V\u003c\/li\u003e\n  \u003cli\u003e2010-2015 Honda Crosstour (K24)\u003c\/li\u003e\n  \u003cli\u003e2003-2011 Honda Element\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003ch4\u003eCompatible Engines\u003c\/h4\u003e\n\n\u003cul\u003e\n  \u003cli\u003eK20A2, K20A3, K20Z1, K20Z3\u003c\/li\u003e\n  \u003cli\u003eK23A1\u003c\/li\u003e\n  \u003cli\u003eK24A1, K24A2, K24A4, K24A8\u003c\/li\u003e\n  \u003cli\u003eK24Z1, K24Z2, K24Z3, K24Z7\u003c\/li\u003e\n\u003c\/ul\u003e\n\u003c\/li\u003e\n\n\n\n\n\n\n\n \n\u003cli id=\"Included\"\u003e\n(1) Timing Chain Drive Gear\n\u003c\/li\u003e\n\n\n\n\n\n\n\n\n\n\n\n\n\u003c\/ul\u003e\n","brand":"Honda","offers":[{"title":"Default Title","offer_id":45127257325602,"sku":"OHA-13620-RAA-A02","price":157.58,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/OHA-13620-RAA-A02_w516.jpg?v=1775074227","url":"https:\/\/www.hybrid-racing.com\/products\/honda-k-series-timing-chain-drive-gear-13620-raa-a02","provider":"Hybrid Racing","version":"1.0","type":"link"}