{"product_id":"dometic-9100-awning-torsion-assembly-lh-polar-white","title":"Dometic 9100 Power Awning Left-Hand Torsion Assembly, Polar White","description":"\u003cp class=\"nvn-hero\"\u003eThis is the genuine Dometic left-hand torsion assembly for 9100 Series power awnings, cast in polar white to match your existing hardware. It's the spring-loaded heart of the awning arm, and swapping in a fresh one brings back smooth extension, tight retraction, and taut fabric on any 9100 awning from 10 to 21 feet.\u003c\/p\u003e\n\n\u003cdiv class=\"nvn-description\"\u003e\n\u003cp\u003eWhen the left arm on your Dometic 9100 power awning starts binding, sticks on the way in, or just won't hold tension the way it used to, the torsion assembly is usually the part that's worn out. This is the factory left-hand replacement, cast in polar white to match the rest of your 9100 hardware. It's the spring-loaded backbone of the arm, and getting the right one back on the coach means your awning extends smooth and retracts tight again.\u003c\/p\u003e\n\u003cp\u003eThe torsion assembly is what gives the awning arm its spring tension. As the motor drives the awning out, the torsion spring loads up, and on the way back in it helps pull the arm home and keeps the fabric taut so it doesn't flap or sag. When that spring fatigues or the casting cracks, you'll feel it. The arm gets lazy. The fabric develops a belly, and the awning can rattle at highway speed. Dropping in a fresh assembly brings all of that back to spec.\u003c\/p\u003e\n\u003cp\u003eThis one fits the Dometic 9100 Series power awnings across the whole 10 foot to 21 foot length range, and it covers the common 910, 915, and 917 models. It's the left-hand side specifically. Left and right aren't interchangeable, because the casting geometry and the way the spring winds are mirror images of each other. If you're replacing just one side, order the side that matches. Plenty of folks doing a full refresh order both the left and the right together so the awning wears evenly from here on out.\u003c\/p\u003e\n\u003cp\u003eThink of the two torsion assemblies as the shoulders of the awning. They carry the load the roller tube and fabric put on the arms every time you run it out, and they take the beating from wind and road vibration mile after mile. That's why they're the first thing to go on a hard-used coach, and why a genuine replacement matters. The spring rate has to match so both arms pull evenly. A mismatched or generic casting throws that balance off and you end up chasing an awning that tracks crooked.\u003c\/p\u003e\n\u003cp\u003eNot sure which side you need? The safest move is to look at the casting you're pulling off and match it. Confirm the awning length falls inside the 10 to 21 foot window, check the part number on your old casting or in your coach's parts list, then match the color to your end caps and you're set.\u003c\/p\u003e\n\u003cp\u003ePolar white is the light casting color, meant to blend with polar white end caps and weathershields. If your current hardware is the light-colored version, this is the match. If your coach came with the black hardware, you'd want the black casting instead so it doesn't stand out against the rest of the arm.\u003c\/p\u003e\n\u003cp\u003eInstallation is a straightforward job for anyone comfortable with a drill and a wrench. Dometic's own hardware guide calls for a drill, a flat-bladed screwdriver, a wrench or hex nut driver, and a bead of sealant at the mounting points. The awning has to be fully retracted and the tension released before you unbolt the old casting, and that's the part to respect. A loaded torsion spring carries real energy, so follow the 9100 installation manual step by step and don't shortcut the tension-release procedure.\u003c\/p\u003e\n\u003cp\u003eOne thing worth knowing on the longer setups. Awnings longer than 21 feet fall outside this assembly's range and need a cradle kit and a bumper kit added on, per Dometic's install documentation. And if you've ever fought with water pooling on the fabric, Dometic makes an adjustable pitch arm kit for the 9100 that lets you tilt the awning for drainage. That's a separate part, but it's worth knowing about while you've got the arm apart.\u003c\/p\u003e\n\u003cp\u003eSo who needs this? Anybody with a 9100 power awning that's showing its age. Snowbirds who run the awning out every afternoon, weekend campers whose arm took a wind gust wrong, or an owner buttoning up a rig for resale. It's a genuine Dometic part, not a look-alike, so the bolt pattern, the spring rate, and the casting all match what left the factory. Get the correct hand and color, take your time with the tension, and you'll have the awning cycling like new.\u003c\/p\u003e\n\u003c\/div\u003e\n\n\u003ch2\u003eKey Features\u003c\/h2\u003e\n\u003cul class=\"nvn-features\"\u003e\n  \u003cli\u003eGenuine Dometic left-hand torsion assembly, so the spring rate and bolt pattern match the factory awning exactly\u003c\/li\u003e\n  \u003cli\u003ePolar white cast finish that blends with polar white 9100 end caps and weathershields\u003c\/li\u003e\n  \u003cli\u003eFits Dometic 9100 Series power awnings from 10 to 21 feet, covering the 910, 915, and 917 models\u003c\/li\u003e\n  \u003cli\u003eSpring-loaded torsion design keeps the fabric taut on the way in and steadies the arm at highway speed\u003c\/li\u003e\n  \u003cli\u003eLeft-hand specific casting, a mirror of the right side, so you replace exactly the side that's worn\u003c\/li\u003e\n  \u003cli\u003eCast aluminum construction built to carry repeated wind and retraction loads\u003c\/li\u003e\n  \u003cli\u003eInstalls with basic hand tools, a drill, and sealant per Dometic's hardware guide\u003c\/li\u003e\n  \u003cli\u003eManufacturer part number 3310420.017B for an exact-match replacement order\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 Dometic 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 does the torsion assembly do on a Dometic 9100 awning?\u003c\/summary\u003e\n    \u003cp\u003eIt's the spring-loaded mechanism inside the awning arm. As the motor drives the awning out, the torsion spring loads up, and on the way back in it helps pull the arm home and keep the fabric taut. When it wears out, the arm gets lazy and the fabric can sag or flap.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I know if I need the left-hand or right-hand assembly?\u003c\/summary\u003e\n    \u003cp\u003eLeft and right castings mirror each other and aren't interchangeable. Match the side you're replacing. The part number on your old casting or in your coach's awning parts list confirms which one to order. If you're refreshing both arms, order the left and right together.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWill this fit my awning?\u003c\/summary\u003e\n    \u003cp\u003eIt fits Dometic 9100 Series power awnings anywhere from 10 to 21 feet of fabric length. Measure your awning or check the model tag first. It covers the common 910, 915, and 917 models.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eIs polar white the right color for my awning?\u003c\/summary\u003e\n    \u003cp\u003ePolar white is the light casting finish that matches polar white end caps and weathershields. If your existing hardware is the light-colored version, this is your match. If your coach has the black hardware, you'd want the black casting instead.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I use this on an awning longer than 21 feet?\u003c\/summary\u003e\n    \u003cp\u003eNo. This assembly covers the 10 to 21 foot range. Per Dometic's install documentation, awnings longer than 21 feet also need a cradle kit and a bumper kit, which are separate parts.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eCan I tilt the awning for water drainage?\u003c\/summary\u003e\n    \u003cp\u003eNot with this part alone. Dometic makes a separate adjustable pitch arm kit for the 9100 that lets you tilt the awning so water runs off instead of pooling. It's worth adding while you've got the arm apart.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eWhat tools do I need to install it?\u003c\/summary\u003e\n    \u003cp\u003eDometic's hardware guide calls for a drill, a flat-bladed screwdriver, a wrench or hex nut driver, and sealant at the mounting points. The awning has to be fully retracted and the spring tension released before you unbolt the old casting.\u003c\/p\u003e\n  \u003c\/details\u003e\n  \u003cdetails\u003e\n    \u003csummary\u003eHow do I handle the spring tension safely?\u003c\/summary\u003e\n    \u003cp\u003eA loaded torsion spring stores real energy, so respect it. Follow the 9100 installation manual's tension-release steps before removing the old assembly, and don't try to disassemble a spring that's still under load. Take it slow and you'll be fine.\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\u003eDometic 9100 Power Awning Left-Hand Torsion Assembly, Polar White\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eBrand\u003c\/th\u003e\n\u003ctd\u003eDometic\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eManufacturer Part Number\u003c\/th\u003e\n\u003ctd\u003e3310420.017B\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eUPC\u003c\/th\u003e\n\u003ctd\u003e713814232122\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eComponent Type\u003c\/th\u003e\n\u003ctd\u003eTorsion Assembly\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eOrientation\u003c\/th\u003e\n\u003ctd\u003eLeft Hand\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCasting Color\u003c\/th\u003e\n\u003ctd\u003ePolar White\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCompatible Awning Series\u003c\/th\u003e\n\u003ctd\u003eDometic 9100 Series Power Awning\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCompatible Awning Length\u003c\/th\u003e\n\u003ctd\u003e10 ft to 21 ft\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eAwning Type\u003c\/th\u003e\n\u003ctd\u003ePower Patio Awning\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCompatible Models\u003c\/th\u003e\n\u003ctd\u003e910, 915, 917\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eCasting Material\u003c\/th\u003e\n\u003ctd\u003eCast Aluminum\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eDrive Type\u003c\/th\u003e\n\u003ctd\u003ePower (Motorized)\u003c\/td\u003e\n\u003c\/tr\u003e\n    \u003ctr\u003e\n\u003cth\u003eApplication\u003c\/th\u003e\n\u003ctd\u003eRV Power Patio Awning\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 does the torsion assembly do on a Dometic 9100 awning?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It's the spring-loaded mechanism inside the awning arm. As the motor drives the awning out, the torsion spring loads up, and on the way back in it helps pull the arm home and keep the fabric taut. When it wears out, the arm gets lazy and the fabric can sag or flap.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How do I know if I need the left-hand or right-hand assembly?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Left and right castings mirror each other and aren't interchangeable. Match the side you're replacing. The part number on your old casting or in your coach's awning parts list confirms which one to order. If you're refreshing both arms, order the left and right together.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Will this fit my awning?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"It fits Dometic 9100 Series power awnings anywhere from 10 to 21 feet of fabric length. Measure your awning or check the model tag first. It covers the common 910, 915, and 917 models.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Is polar white the right color for my awning?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Polar white is the light casting finish that matches polar white end caps and weathershields. If your existing hardware is the light-colored version, this is your match. If your coach has the black hardware, you'd want the black casting instead.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I use this on an awning longer than 21 feet?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"No. This assembly covers the 10 to 21 foot range. Per Dometic's install documentation, awnings longer than 21 feet also need a cradle kit and a bumper kit, which are separate parts.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"Can I tilt the awning for water drainage?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Not with this part alone. Dometic makes a separate adjustable pitch arm kit for the 9100 that lets you tilt the awning so water runs off instead of pooling. It's worth adding while you've got the arm apart.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"What tools do I need to install it?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"Dometic's hardware guide calls for a drill, a flat-bladed screwdriver, a wrench or hex nut driver, and sealant at the mounting points. The awning has to be fully retracted and the spring tension released before you unbolt the old casting.\"\n            }\n        },\n        {\n            \"@type\": \"Question\",\n            \"name\": \"How do I handle the spring tension safely?\",\n            \"acceptedAnswer\": {\n                \"@type\": \"Answer\",\n                \"text\": \"A loaded torsion spring stores real energy, so respect it. Follow the 9100 installation manual's tension-release steps before removing the old assembly, and don't try to disassemble a spring that's still under load. Take it slow and you'll be fine.\"\n            }\n        }\n    ]\n}\n\u003c\/script\u003e\n","brand":"Dometic","offers":[{"title":"Default Title","offer_id":45059511976029,"sku":"2008441","price":107.79,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0299\/7266\/0317\/files\/ImageServerAPI_b31ce8ed-70a6-462d-88cc-b7fb74253485.png?v=1789510467","url":"https:\/\/nvnmarine.com\/products\/dometic-9100-awning-torsion-assembly-lh-polar-white","provider":"NVN Marine","version":"1.0","type":"link"}