{"product_id":"honda-k24z-crank-pulley-13810-r40-a01","title":"Honda K24Z2\/K24Z3\/K24Z7 Crank Pulley 13810-R40-A01","description":"\u003cul\u003e\n\u003cli\u003eGenuine Honda Product \u003c\/li\u003e\n\u003cli\u003eDirect Factory Replacement Part \u003c\/li\u003e\n\u003cli\u003eCompatible with K24Z2, K24Z3, and K24Z7 Engines \u003c\/li\u003e\n\u003cli\u003eDiameter: 6 5\/8\" or 16.8275 cm \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=\"#VehicleFitment\"\u003eVehicle Fitment\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\u003eGenuine Honda Crank Pulley (13810-R40-A01) - K24Z2, K24Z3 \u0026amp; K24Z7\u003c\/h3\u003e\n\n\u003cp\u003eThe crank pulley does more than drive your accessories. It's a harmonic damper, which means it's absorbing the torsional vibration the crankshaft produces on every combustion event. When the rubber bonding inside it degrades, it stops damping, and those vibrations go somewhere less forgiving. This is the genuine Honda replacement, 6-5\/8 inches in diameter.\u003c\/p\u003e\n\n\u003ch4\u003eGrab A New Woodruff Key Too\u003c\/h4\u003e\n\n\u003cp\u003eWorth adding to your order, since it's the small part that makes this job go properly.\u003c\/p\u003e\n\n\u003cp\u003eThe \u003ca href=\"https:\/\/www.hybrid-racing.com\/products\/honda-crank-pulley-key-90704-pna-000?_pos=15\u0026amp;_sid=31f048978\u0026amp;_ss=r\" target=\"_blank\" rel=\"noopener noreferrer\"\u003ecrank pulley key, part number 90704-PNA-000\u003c\/a\u003e, is what indexes the pulley to the crankshaft. It's inexpensive, it's easy to damage on removal, and a worn or nicked key means a pulley that doesn't seat exactly right.\u003c\/p\u003e\n\n\u003cp\u003eGiven that you're already in there and the part costs almost nothing, there's no sensible reason to reuse the old one.\u003c\/p\u003e\n\n\u003ch4\u003eWhat A Failing Pulley Looks Like\u003c\/h4\u003e\n\n\u003cp\u003eThese fail in a specific and recognizable way.\u003c\/p\u003e\n\n\u003cp\u003eThe pulley is built in two pieces, an inner hub and an outer ring, bonded with rubber between them. That rubber is what absorbs vibration, and over time and heat cycles it degrades.\u003c\/p\u003e\n\n\u003cp\u003eWhat you see is the \u003cstrong\u003eouter ring separating or walking\u003c\/strong\u003e relative to the inner hub. Sometimes there's visible rubber cracking or missing chunks. Sometimes the outer ring has shifted enough that your belt no longer tracks straight, which shows up as belt wear or squealing.\u003c\/p\u003e\n\n\u003cp\u003eThe serious version is the outer ring letting go entirely at speed, which takes your accessory belt with it and can do real damage on the way out.\u003c\/p\u003e\n\n\u003ch4\u003eWhy Damping Matters Beyond The Noise\u003c\/h4\u003e\n\n\u003cp\u003eWorth understanding, because it's easy to think of this as just a pulley.\u003c\/p\u003e\n\n\u003cp\u003eA crankshaft doesn't rotate smoothly. Every combustion event twists it, and it springs back, which sets up torsional vibration along its length. Left unchecked, that vibration is genuinely destructive to the crank, the bearings, and anything driven off the front of the engine.\u003c\/p\u003e\n\n\u003cp\u003eThe damper absorbs it. When it stops working, those vibrations don't go away, they just have nowhere useful to go. That's why a degraded pulley isn't only a belt problem.\u003c\/p\u003e\n\n\u003ch4\u003eUse The Genuine Part\u003c\/h4\u003e\n\n\u003cp\u003eThe damping characteristics are the specification here, and they're tuned to the engine. A pulley that bolts on and spins isn't necessarily damping the frequencies a K24 produces.\u003c\/p\u003e\n\n\u003cp\u003eUnderdrive and lightweight pulleys exist and have their place on a race engine, but they're a different product with different tradeoffs. If you want a factory-behaving engine with proper damping, this is the part.\u003c\/p\u003e\n\n\u003ch4\u003eFitment\u003c\/h4\u003e\n\n\u003cp\u003e2013-2015 Acura ILX\u003cbr\u003e2009-2014 Acura TSX\u003cbr\u003e2008-2012 Honda Accord\u003cbr\u003e2012-2015 Honda Civic Si\u003cbr\u003e2010-2012 Honda CR-V\u003c\/p\u003e\n\n\u003cp\u003eCovers the K24Z2, K24Z3, and K24Z7. Part number 13810-R40-A01, which supersedes 13810-R40-A02.\u003c\/p\u003e\n\n\u003ch4\u003eWho Should Grab One\u003c\/h4\u003e\n\n\u003cp\u003eThis is for the K24 owner who's found a separating pulley, a belt that won't track straight, or vibration that wasn't there before. It's also worth doing on a high mileage engine you're going through, since the rubber degrades on a calendar as much as on an odometer. Add the woodruff key, torque it properly, and get the front of the engine back to doing its job.\u003c\/p\u003e\n\n\u003cp\u003e\u003cstrong\u003eFits:\u003c\/strong\u003e Honda K24Z2, K24Z3, and K24Z7, see the application list above. \u003cstrong\u003ePart number:\u003c\/strong\u003e 13810-R40-A01 (supersedes 13810-R40-A02). \u003cstrong\u003eDiameter:\u003c\/strong\u003e 6-5\/8\" (16.83 cm). \u003cstrong\u003eType:\u003c\/strong\u003e genuine Honda crank pulley and harmonic damper. \u003cstrong\u003eRecommended:\u003c\/strong\u003e new crank pulley key, part \u003ca href=\"https:\/\/www.hybrid-racing.com\/products\/honda-crank-pulley-key-90704-pna-000?_pos=15\u0026amp;_sid=31f048978\u0026amp;_ss=r\" target=\"_blank\" rel=\"noopener noreferrer\"\u003e90704-PNA-000\u003c\/a\u003e.\u003c\/p\u003e\n\u003c\/li\u003e\n\n \n\u003cli id=\"VehicleFitment\"\u003e\n \u003cp\u003e2013-2015 Acura ILX\u003cbr\u003e2009-2014 Acura TSX\u003cbr\u003e2008-2012 Honda Accord\u003cbr\u003e2012-2015 Honda Civic Si\u003cbr\u003e2010-2012 Honda CR-V\u003c\/p\u003e \n\u003c\/li\u003e\n\n\n\n\n\n\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":47512322801698,"sku":"OHA-13810-R40-A01","price":319.99,"currency_code":"USD","in_stock":false}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/2218\/5701\/files\/OHA-13810-R40-A02_ygpe.jpg?v=1789161864","url":"https:\/\/www.hybrid-racing.com\/products\/honda-k24z-crank-pulley-13810-r40-a01","provider":"Hybrid Racing","version":"1.0","type":"link"}