{"product_id":"hella-355118782-vented-brake-rotor-350mm","title":"Hella 355118782 Vented Brake Rotor 350mm","description":"\u003cp class=\"nvn-hero\"\u003eThe Hella 355118782 is a vented, one-piece disc brake rotor measuring 350mm across with a 20mm nominal thickness, a 79mm hub bore, and a 7 x 120mm bolt pattern. The gray cast iron carries a zinc coating that fights rust and road salt, and the vented design sheds heat to help hold off brake fade. Sold as a single rotor.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eThis is the Hella 355118782, a vented one-piece disc brake rotor built to replace a worn or warped rotor on the axle where it fits. It measures 350mm across the outside diameter, runs 20mm at nominal thickness, and stands 59mm tall from the mounting face to the friction surface. The center hub bore is 79mm and the mounting pattern is 7 x 120mm. If those numbers match what's on your vehicle right now, you're in the right place.\u003c\/p\u003e\n\u003cp\u003eRotors are a wear item. Every time you hit the brakes, the pads clamp down on this friction surface and shave off a little material along with a lot of heat. Over enough miles that surface thins out, and if it heats and cools unevenly it can warp, which is what you feel as that pulsing in the pedal at highway speed. Once a rotor drops below its minimum thickness or develops a lip you can catch a fingernail on, it's done. You don't resurface your way out of that. You replace it.\u003c\/p\u003e\n\u003cp\u003eWhat you get here is a vented casting, not a solid blank. The two friction faces are separated by internal vanes that pull air through the middle as the rotor spins. That matters more than people think. Heat is the enemy of braking. A vented rotor sheds it faster, which keeps the pad compound in its happy range and cuts down on brake fade on a long downhill or during repeated hard stops. The one-piece design means the hat and the friction ring are cast as a single unit, so there's nothing to work loose and the whole thing indexes cleanly onto the hub.\u003c\/p\u003e\n\u003cp\u003eThe gray cast iron gets a zinc coating, and that's a detail worth caring about. Bare cast iron starts flash-rusting the moment it's exposed to humidity. You've seen it on a car that sat a week in the rain, that orange film on the rotor face. The zinc coating protects the hat, the vanes, and the areas the pads don't sweep, so the rotor looks clean behind an open wheel and, more importantly, resists the kind of corrosion that eats into a rotor from the edges over a few winters of road salt. The pads still wipe the friction band clean every drive.\u003c\/p\u003e\n\u003cp\u003eA note on quantity. This part number is a single rotor. Brakes work in pairs across an axle, so if you're replacing one side you should almost always do both at the same time. A fresh rotor on one corner and a grooved, thinned rotor on the other gives you uneven braking, and that's the last thing you want when you need to stop straight. Order two.\u003c\/p\u003e\n\u003cp\u003eFresh rotors call for fresh pads, and they should go in together. Putting used pads with their old wear pattern onto a new smooth rotor keeps them from ever seating fully, so you lose bite and you can glaze the pad. Match new pads to this rotor, and use pads rated for your vehicle's weight and how you drive it.\u003c\/p\u003e\n\u003cp\u003eInstallation is straightforward if you've done a brake job before. Pull the caliper and bracket, slide off the old rotor (a couple of taps with a dead-blow usually frees a stuck one), and clean the hub face down to bare metal so the new rotor sits dead flat. Any rust or crud on the hub throws off runout and brings back that pulsing you were trying to fix. Wipe the protective film off the friction faces with brake cleaner, hang the new rotor, torque the caliper bracket to spec, and bed the brakes in with a series of moderate stops before you lean on them hard.\u003c\/p\u003e\n\u003cp\u003eOne thing we'll always tell you straight: confirm the fitment before you buy. The 350mm diameter, 20mm thickness, 79mm hub, and 7 x 120mm pattern are the numbers that decide whether this rotor bolts on. Measure your old rotor or check your part number against these specs. If they line up, this is a clean, corrosion-protected replacement that'll bring your braking back to where it should be. If they don't, it's the wrong part, and we'd rather you know that now.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003e350mm outside diameter with 20mm nominal thickness, sized to replace the original rotor on the axle it fits\u003c\/li\u003e\n  \u003cli\u003eVented rotor design with internal cooling vanes that shed heat and cut brake fade on long descents and repeated hard stops\u003c\/li\u003e\n  \u003cli\u003eOne-piece cast construction joins the hat and friction ring in a single unit, so nothing works loose and it indexes flat to the hub\u003c\/li\u003e\n  \u003cli\u003eZinc-coated gray cast iron resists flash rust and road-salt corrosion on the hat, vanes, and non-swept areas\u003c\/li\u003e\n  \u003cli\u003e7 x 120mm wheel bolt pattern with a 79mm hub bore for a direct fit where those numbers match\u003c\/li\u003e\n  \u003cli\u003e59mm overall height from the mounting face to the friction surface\u003c\/li\u003e\n  \u003cli\u003eSold as a single rotor, so order two to replace both sides of an axle together\u003c\/li\u003e\n  \u003cli\u003eHella part number 355118782 for straightforward cross-referencing\u003c\/li\u003e\n\u003c\/ul\u003e\n\n\u003cdiv class=\"nvn-trust\"\u003e\n  \u003ch2\u003eWhy Buy from NVN Marine\u003c\/h2\u003e\n  \u003cul\u003e\n    \u003cli\u003eAuthorized Hella Marine reseller, full manufacturer warranty\u003c\/li\u003e\n    \u003cli\u003eNMEA member and ABYC certified, advice from real boat techs\u003c\/li\u003e\n    \u003cli\u003eSame-day shipping before 3 PM ET on in-stock items\u003c\/li\u003e\n    \u003cli\u003eNY headquarters and Fort Lauderdale flagship retail store\u003c\/li\u003e\n  \u003c\/ul\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eFrequently Asked Questions\u003c\/h2\u003e\n\u003cdiv class=\"nvn-faq\"\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat are the dimensions of the Hella 355118782 rotor?\u003c\/summary\u003e\n    \u003cp\u003eIt's 350mm outside diameter, 20mm nominal thickness, and 59mm height, with a 79mm hub bore. The wheel bolt pattern is 7 x 120mm.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs this rotor vented or solid?\u003c\/summary\u003e\n    \u003cp\u003eVented. Internal vanes run between the two friction faces to pull air through and shed heat, which helps resist brake fade during hard or repeated stops.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDoes this come as a pair or a single rotor?\u003c\/summary\u003e\n    \u003cp\u003eSingle. Since brakes work across an axle, you'll almost always want two so both sides match and you brake evenly.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is this rotor made of?\u003c\/summary\u003e\n    \u003cp\u003eGray cast iron with a zinc coating that protects the hat and vanes from flash rust and road-salt corrosion. The pads keep the friction band clean.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need new brake pads too?\u003c\/summary\u003e\n    \u003cp\u003eIt's the smart move. New pads seat properly against a fresh rotor. Reusing old pads with their existing wear pattern costs you bite and can glaze the pad.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill this fit my vehicle?\u003c\/summary\u003e\n    \u003cp\u003eIt fits applications that use a 350mm rotor with a 20mm thickness, a 79mm hub, and a 7 x 120mm bolt pattern. Check those numbers against your old rotor or part number before ordering.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan this rotor be resurfaced?\u003c\/summary\u003e\n    \u003cp\u003eIf it's still within thickness spec a rotor can sometimes be turned, but once it's below minimum thickness or badly grooved you replace it. This part is the replacement.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eDo I need to clean the hub before installing?\u003c\/summary\u003e\n    \u003cp\u003eYes. Clean the hub face down to bare metal so the rotor sits flat. Rust or debris there causes runout and brings back brake pulsation.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat is the manufacturer part number?\u003c\/summary\u003e\n    \u003cp\u003eIt's 355118782, from Hella.\u003c\/p\u003e\n  \u003c\/details\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eTechnical Specifications\u003c\/h2\u003e\n\u003ctable class=\"nvn-specs\"\u003e\n  \u003ctbody\u003e\n    \u003ctr\u003e\n\u003cth\u003eTitle\u003c\/th\u003e\n\u003ctd\u003eHella 355118782 Vented Brake Rotor\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eHella\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e355118782\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e4082300573909\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003ePart Type\u003c\/th\u003e\n\u003ctd\u003eDisc Brake Rotor\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eRotor Style\u003c\/th\u003e\n\u003ctd\u003eVented\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eConstruction\u003c\/th\u003e\n\u003ctd\u003eOne Piece Design\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eWheel Bolt Pattern\u003c\/th\u003e\n\u003ctd\u003e7 x 120 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eOutside Diameter\u003c\/th\u003e\n\u003ctd\u003e350 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eNominal Thickness\u003c\/th\u003e\n\u003ctd\u003e20 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHeight\u003c\/th\u003e\n\u003ctd\u003e59 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eHub Size\u003c\/th\u003e\n\u003ctd\u003e79 mm\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eMaterial\u003c\/th\u003e\n\u003ctd\u003eZinc Coated Gray Cast Iron\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eQuantity\u003c\/th\u003e\n\u003ctd\u003eSingle\u003c\/td\u003e\n\u003c\/tr\u003e\n  \u003c\/tbody\u003e\n\u003c\/table\u003e\n\n\u003cscript type=\"application\/ld+json\"\u003e\n{\n    \"@context\": \"https:\/\/schema.org\",\n    \"@type\": \"FAQPage\",\n    \"mainEntity\": [\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What are the dimensions of the Hella 355118782 rotor?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's 350mm outside diameter, 20mm nominal thickness, and 59mm height, with a 79mm hub bore. The wheel bolt pattern is 7 x 120mm.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is this rotor vented or solid?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Vented. Internal vanes run between the two friction faces to pull air through and shed heat, which helps resist brake fade during hard or repeated stops.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Does this come as a pair or a single rotor?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Single. Since brakes work across an axle, you'll almost always want two so both sides match and you brake evenly.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is this rotor made of?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Gray cast iron with a zinc coating that protects the hat and vanes from flash rust and road-salt corrosion. The pads keep the friction band clean.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I need new brake pads too?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's the smart move. New pads seat properly against a fresh rotor. Reusing old pads with their existing wear pattern costs you bite and can glaze the pad.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will this fit my vehicle?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It fits applications that use a 350mm rotor with a 20mm thickness, a 79mm hub, and a 7 x 120mm bolt pattern. Check those numbers against your old rotor or part number before ordering.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can this rotor be resurfaced?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"If it's still within thickness spec a rotor can sometimes be turned, but once it's below minimum thickness or badly grooved you replace it. This part is the replacement.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Do I need to clean the hub before installing?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Yes. Clean the hub face down to bare metal so the rotor sits flat. Rust or debris there causes runout and brings back brake pulsation.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What is the manufacturer part number?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's 355118782, from Hella.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Hella","offers":[{"title":"Default Title","offer_id":45062100320349,"sku":"2008653","price":86.29,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_a040a3ab-725e-4c6c-8d47-a62ea36556b8.jpg?v=1789573795","url":"https:\/\/nvnmarine.com\/products\/hella-355118782-vented-brake-rotor-350mm","provider":"NVN Marine","version":"1.0","type":"link"}