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HD Bar SL Adapter for Yakima BaseLine, SkyLine, TimberLine, and RidgeLine Towers - Qty 4

HD Bar SL Adapter for Yakima BaseLine, SkyLine, TimberLine, and RidgeLine Towers - Qty 4

Item # Y03541
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HD Bar SL Adapter for Yakima BaseLine, SkyLine, TimberLine, and RidgeLine Towers - Qty 4 Crossbars Y03541
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These adapters allow you to mount Yakima HD crossbars on BaseLine, SkyLine, TimberLine, or RidgeLine roof rack towers. Kit includes 4 adapters. Call 800-298-8924 to order Yakima accessories and parts part number Y03541 or order online at etrailer.com. Free expert support on all Yakima products. Guaranteed Lowest Price and Fastest Shipping for HD Bar SL Adapter for Yakima BaseLine, SkyLine, TimberLine, and RidgeLine Towers - Qty 4. Accessories and Parts reviews from real customers.
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Yakima Accessories and Parts - Y03541

  • Roof Rack
  • Crossbars
  • Yakima
  • Adapters

These adapters allow you to mount Yakima HD crossbars on BaseLine, SkyLine, TimberLine, or RidgeLine roof rack towers. Kit includes 4 adapters.


  • Adapters let you mount your Yakima HD crossbars on BaseLine, SkyLine, TimberLine, or RidgeLine roof rack towers
  • Easy installation with included tool
    • Simply slide adapter into bar's channel and secure it to the tower
  • Kit includes 4 adapters

8003541 HD Bar Adapter for Yakima StreamLine, BaseLine, TimberLine, Skyline, and RidgeLine Towers - Qty 4

Installation Details Y03541 Installation instructions

Video of HD Bar SL Adapter for Yakima BaseLine, SkyLine, TimberLine, and RidgeLine Towers - Qty 4

Videos are provided as a guide only. Refer to manufacturer installation instructions and specs for complete information.

Video Transcript for Yakima HD Crossbars Installation - 2018 Ford Expedition

Adam: Hi everyone. Adam with etrailer.com. today we're going to be taking a look at the Yakima roof rack system on our 2018 Ford Expedition. So I am using our Timberline towers for our roof rack system and I'm using the HD Yakima bars as well. And to be honest, these towers are very easy to install compared to some of the others. It just wraps around your existing raised rails and it makes the installation really easy.So on this Expedition we will have a lot of capacity for passengers on the inside.

So being able to utilize our roof to store some of their luggage is going to be ideal for those long trips. The less luggage in there, the better more space for your passengers. And for me that's always a plus. So this is going to be ideal for all of your T-track accessories and you don't have to remove this cap to get those on. On top of that, we do have tie down points, which makes everything very, very convenient and easy.

We can throw up a bunch of different kayak carriers, a canoe carrier, a couple of bike racks if we want, or just get a huge cargo carrier on top just to take everybody's luggage out from the inside of your cabin.So these bars are going to be made of aluminum, which is going to help resist against rust and corrosion. It has a nice powder coated finish, which is just going to give it a really sleek look on this black expedition. It does look very cool, but one thing we could add, and I would definitely add, there's a front fairing that Yakima makes and that's going to help direct that wind from going underneath our bars and then it will direct it over just to cut down on that wind noise and possibly help your gas mileage.So just to let you guys know, a lot of our customers are wondering what the gap is between our roof and the bottom of our bars. With the HD bars here we are at about three and a half from the roof to the bottom of our bars and from the roof to the top of the bars we are about four and three quarter inches.Now that we've gone over some of those features, let's just go ahead and show you how easy it is to install. So the first thing you're going to want to do is we are going to back this bolt out a little bit just by loosening it.

And by doing that, I found it easiest to then push in. So as you see when I push in, it's going to let this go through, which then I can get that out from underneath. And then we're going to have to get to, there is a bolt underneath there and I've found it to be easiest just to shove it all the way up front and we're going to be able to loosen that a little bit.Then we'll go to the top side of it. On the top side, the first thing we're going to want to do is take our plastic piece here. See these grooves, I'm going to line them up with these grooves.

Just goes in there very easily. Then we can take our T-track, drop that in, hold it into place and access that bolt down there. We're going to give it maybe a couple turns just to make sure it gets threaded on there. And once we do that we can go ahead and put this on our bars.I am using the Yakima HD bars, which is going to require us to take the cap off. It's going to be one screw, and I have found it easier to flip this over to get that screw out. Just Grab it like that. And we are only going to have to remove one cap because if we put them on there correctly, we don't have to do it on both sides. We get that lined up on the T-track, slide that all the way down. And now what I'm going to do is repeat that same exact process on our other foot.So now we can go ahead and put our bars on our rails. So once we get this looped underneath our fixed rails here, we might have to loosen this a little bit just so it can fit around this little groove here. But once we get it in that groove, we can go ahead and start tightening it down. And once it gets nice and tight, make sure and check. And if it is, we can put our caps on. So all we really need to do is get these two points here to go in these holes there. And once we get that in place, should snap right in. Well, everyone, thanks for tuning in and taking a look at the Yakima roof rack system on our 2018 Ford Expedition.

Customer Reviews

HD Bar SL Adapter for Yakima BaseLine, SkyLine, TimberLine, and RidgeLine Towers - Qty 4 - Y03541

Average Customer Rating:  5.0 out of 5 stars   (7 Customer Reviews)

These adapters allow you to mount Yakima HD crossbars on BaseLine, SkyLine, TimberLine, or RidgeLine roof rack towers. Kit includes 4 adapters.

- Y03541

I choose etrailer simply because they mailed to APO. I’m a AD SM, and a lot of companies don’t shop to APO. As soon as I ordered my product, I received an email as a courtesy from etrailer letting me know I had an individual that would be tracking my product every step of the way, reassuring a smooth process. Their site functionality was easy, their customer service was great. I wanted to know if they had bike racks that would fit my cross bars, I got a email right away with a suggestion and a link that would fit my needs. I’ll definitely order from etrailer if I ever need to again. 809661

- Y03541

The bar adapters arrived on time and in good shape. Thanks, 868280

- Y03541

Super, super, super . Thank you 848356

- Y03541

Great customer service 848716

- Y03541

The rep from etrailer (Noah conformed my online order, made certain my order was correct for the vehicle I was outfitting and made certain I received my order items on time before my trip. This company is great! 828024

- Y03541

Great customer service, definitely order from etrailer again. 809665

- Y03541

It looks just as pictured :) Great product and superior service! William took the time to help us decide what we actually needed and would work for us. He is knowledgeable in regards to his products and has an overall helpful attitude. It was such a pleasure working with him. Thanks again and buy William lunch today!! p/s we have not installed the product yet so I will send a picture once its taken care of 767547


Ask the Experts about this Yakima Accessories and Parts

  • Dimensions of Metal Nut on Yakima HD Bar SL Adapter 4-piece Kit Y03541
    The dimensions of the rectangular metal nut part on the Yakima HD Bar SL Adapter 4-piece kit # Y03541 (their part 8003541) and the single piece part # 8880637 are shown in the linked image. The metal nut measures 1-1/8-inch x 3/4-inch. The overall height of the nut from the top to the wider base part is 3/4-inch.
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  • Parts Needed to Install Yakima LockNLoad Platform B on 2018 Ford F-150 with Naked Roof SuperCrew
    I checked with Yakima and you can install your LockNLoad Platform B # Y05045 on the roof of your 2018 Ford F-150 SuperCrew cab by using the BaseLine towers # Y00146, fit kit # Y06122, and the SL adapter # Y03541 and you'd be set!
    view full answer...
  • Roof Rack for Roof Tent on a 2019 Ford F-450 Super Duty Crew Cab
    While there are no roof racks that have a weight capacity of 400 lbs, I still believe we have a solution for your 2019 Ford F-450 Super Duty Crew Cab with the Yakima HD roof rack. This consists of the HD Crossbars # Y01157, BaseLine Towers # Y00146, HD Bar SL Adapter # Y03541, and Fit Kit # Y06185. If you are looking to use a tent that has a 400 lb weight capacity like the Yakima SkyRise HD # Y07436 then you actually just need to make sure that the roof rack is rated for 165 lbs like...
    view full answer...
  • What Type of Roof Rack System do you Recommend for my 2018 Ram 2500 with a Bare Roof
    Of course using the Yakima HD Crossbars part # Y01159 will give you the bars you're looking for then we can get the rest put together. This will be the towers, HD Bar Adapter and the Baseclips listed. BaseLine Towers for Yakima Crossbars part # Y00146 HD Bar SL Adapter part # Y03541 BaseClip Fit Kit for Yakima BaseLine Roof Rack Towers part # Y06135 For locks use the Yakims SKS Lock Cores part # Y07204. With this setup you will be able to use the Thule Hullavator Pro Kayak Carrier...
    view full answer...
  • Will Installing Track Roof Rack System on A.R.E. Topper Void Warranty
    Installing a track system roof rack like the Yakima parts # Y01126, # Y00221, # Y8890027, and # Y00410 won't void the warranty for your pickup but from what I could find it looks like modifying your A.R.E. topper will void that warranty. Since we aren't an A.R.E. dealer I can't really confirm this, but from my research it is very likely that your warranty will be void. So you can have the track system professionally installed but that would be your choice whether you want to pursue this...
    view full answer...
  • Recommended Roof Rack for Drywall and Lumber on 2019 Chevy Tahoe
    For your 2019 Tahoe, I recommend the Yakima system consisting of: Yakima HD Crossbars - Aluminum - Black - 60" Long # Y01157 SkyLine Towers # Y00148 HD Bar SL Adapters # Y03541 Landing Pad 17 # Y00243 I also recommend adding locks # Y07204 This system will give you strong crossbars with tie down points integrated as well as a load capacity of 165 lbs. It will work well for your drywall, plywood, and loads of lumber within that weight capacity.
    view full answer...
  • Roof Rack Recommendation for 2006 Subaru Impreza with Higher Rated Weight Capacity
    The highest weight rated roof rack we offer for your 2006 Subaru Impreza is the Yakima HD roof rack that consists of # Y01156, # Y03541, and # Y00147. This rack has crossbars that are rated for up to 500 lbs and feet that are rated for up to 220 lbs.
    view full answer...
  • Correct Yakima SKS Lock Core Kit for Yakima HD Roof and OverHaul HD on a 2016 Toyota Tacoma
    That is an excellent setup and I know you'll be happy with that on your 2016 Toyota Tacoma. I'll list out all of the parts you'll need (just so you have them all in one place) but I did want to say while the OverHaul HD does come with locks, we don't have a way to choose the correct lock cores that come in the packaging so your best bet is to go with the 6-lock core SKS # Y07206 because it gives you matching cores for the 2 needed for the ladder rack and then the 4 needed for the roof rack. With...
    view full answer...
  • Recommendation for Crossbars Compatible with Malone J-Load Kayak Carrier on 2020 Volvo XC40
    Since you had trouble with the Thule Aero style bars previously I recommend sticking with the square bar set up you have been using. We have two options of square bars that will fit the 2020 Volvo XC40 and are compatible with the Malone J-Loader Kayak Carrier # MPG118MD. The first is the Thule SquareBar Evo Crossbars 47" Long # TH712200, with the Evo Flush Rail Feet # TH710601, and the Fit Kit for your Volvo XC40 # TH186010. This is going to be the most economic option we have available...
    view full answer...
  • How to Fit the Whispbar WB-400 Kayak Carrier on a 2016 Subaru Outback Wagon
    We do have some solutions for you to use a J-Style carrier on your 2016 Subaru Outback Wagon, but if your current crossbars don't have a T-Slot then the (discontinued) Whispbar WB-400 J-Style kayak carrier isn't compatible with your current roof rack system. To use this system with your Outback Wagon you need to upgrade your OEM crossbars to Yakima JetStream or HD crossbars which do use the T-Slots. For a complete roof rack system you need the SkyLine Towers # Y00148 and the Landing...
    view full answer...
  • Recommended Roof Rack for Bikes and Surfboards on a 2019 Mini Cooper 2 door
    I recommend Yakima aerodynamic bars part # Y01156 which are designed to cut down on wind noise with their design and wind strip on the top and bottom of the bar. You need RidgeLine towers part # Y00145, adapter part # Y03541 and fit kit part # Y06009. The Yakima HighRoad roof bike rack part # Y02114 allows you to carry 1 bike on the roof of the Mini Cooper. The carrier is a no frame contact carrier so it will not damage the frame of your bike. The pivoting wheel hoops hold the bike...
    view full answer...
  • Parts Needed to Install Longer Crossbar Roof Rack on 2020 Toyota Sienna
    I have a 54 inch crossbar solution from Inno that will work great on your 2020 Toyota Sienna but since the tracks on the bottom of the aero Inno bars that attach them to the rack feet only goes so far across the bar you can't go with longer bars in this style than what's recommended. However the square bar roof racks from Inno attach in a way that does not limit the length of the bars at all. So you could install the 54 inch square bars part # INB137 on your 2020 Toyota Sienna but you'd...
    view full answer...
  • How To Transfer Crossbars From a 2019 Ford F-350 to a Leer 100RC Topper
    The track systems are all pretty much universal so you can use Yakima accessories in Thule tracks or vice versa. In regards to weight, you will be limited to 165 lbs per set of crossbars no matter which system you choose as that is all the mounting feet can handle, even with the Yakima HD Crossbars System. The vehicle's roof would likely not be able to handle much more than this either. However, you can carry up to 330 lbs total but you would need to distribute the weight so that 165 lbs...
    view full answer...
  • Can I Fit Four Pair Of J-Style Carriers On Top Of My 2013 GMC Yukon?
    You could possibly fit four of the # S65148 on your roof but it will be a pain to load majority of your kayaks up there. There is a better solution I found that will be more user friendly. You are going to need a large roof rack bar to accommodate your 4 kayaks. I suggest the Yakima 60" HD Bars # Y01157 and If you have factory side rails you will need the Yakima SkyLine Towers # Y00148 along with the Side Rail Adapter # Y03541 and Landing Pad # Y00221. If you have factory raised rails...
    view full answer...
  • High Capacity Roof Rack Recommendation for 2017 Honda CR-V for Off-Road Application
    For an off-road application there's only one roof rack I can recommend for your 2017 Honda CR-V with flush rails and it's the Yakima HD roof rack part # Y01156, # Y00148, # Y03541, and # Y00245. This rack has a 500 lb capacity and sits far enough off of the roof of the vehicle (see picture) that you'd never have to worry about flex in the bars. You should note that the capacity of this rack is not the capacity of your roof. You'd still be limited by the weight capacity of your roof but...
    view full answer...
  • Thule Hullavator Kayak Carrier Mounting Requirements
    To install Thule's load-assist Hullavator kayak carrier # TH898 on a vehicle's roof rack the ends of the bars must extend out past the roof rack feet by at least 4-inches. You can see this requirement illustrated in the linked diagram. The comparable Yakima ShowDown carrier # Y04081 also has a similar bar space requirement. If your roof rack is a Subaru factory type whose bars do not extend past the rack feet/rails then you can still use the Hullavator but you'll need to add a different...
    view full answer...
  • Weight Ratings for Roof Racks on a 2013 Honda Accord Sedan
    I wasn't able to find anything regarding roof weight rating in your owner's manual either so any specific number will need to come directly from Honda. With that being said, the Thule SquareBar roof rack system that you referenced for your 2013 Honda Accord, consisting of parts # TH712400, # TH480R, and # THKIT1720, is only rated for 110 lbs. This means that Thule has tested and approved this roof rack combination on your vehicle for 110 lbs. This has a total weight of about 15 lbs. We...
    view full answer...
  • Yakima BaseLine Roof Rack for 2018 F150 Supercrew 4x4
    In addition to the # Y00426 JetStream crossbars and the # Y00146 BaseLine towers, you'll also need the # Y06122 BaseLine fit kit. If you wanted to go with the HD crossbars, the 78 inch long bars are part # Y01159 and you'd also need the SL adapter so the bars work with the BaseLine towers. The adapter is part # Y03541. According to Yakima, the fact that you have a sunroof won't prevent the rack from being installed, but I recommend taking care before operating it as it can interfere...
    view full answer...
  • Yakima Roof Rack Components Fit HD Bar Setup on 2020 Toyota Tacoma with Naked Roof
    Yakima does have an HD roof rack that fits your 2020 Toyota Tacoma with a naked roof but the correct towers for your vehicle are the Baseline towers and not the Skyline. What you would need is the following components # Y01156, # Y00146, # Y03541, # Y06145, and # Y06128. The fit kit you mentioned does not fit your truck. Since you already have the bars you may not need the part # Y01156 as well.
    view full answer...
  • Recommended Yakima HD Bar Set for my Retrax Pro Tonneau Cover
    Yes this can be easily accomplished. I've put together the list of components needed below but in all reality we just switch the JetStream bars with the HD bars and the SL adapters. HD Bar SL Adapter for Yakima Towers part # Y03541 SkyLine Towers for Yakima Crossbars part # Y00148 Landing Pad 1 for Yakima Control Towers part # Y00221 Yakima Same Key System (SKS) Lock Cores part # Y07204 Yakima 68" HD Crossbars part # Y01158
    view full answer...
  • How To Install Roof Platform Tray On a 2018 Nissan NV 2500 High Roof
    I do have an option to install a platform tray on top of a 2018 Nissan NV 2500 High Roof but there are no options through Rhino Rack currently. Instead, you'd need to first install a Yakima Roof Rack part # Y01158, part # Y03541, part # Y00148, part # Y00221. Then you could use this to install a Yakima Platform Trap part # Y05046 and part # Y05039 (2). In regards to modifying the platform, I could not recommend this.
    view full answer...
  • Recommendations for Roof Racks Compatible with Tonneau Covers on Ford F-150 with 5.5 Ft Bed
    We have a couple of rack options that are compatible with tonneau covers. Both feature aluminum construction and can be mounted at roof height. If you have a cover that installs completely inside the truck bed rails like the Lomax Hard Tonneau Cover # AB1010019, the best rack is the Thule TracRac # TH43002XT-508EX. This rack can be quickly removed from the truck bed and uses adjustable T-track base rails along the full length of your bed. It also features 4 Side cleats that attach to...
    view full answer...
  • High Capacity and Aerodynamic Roof Rack Recommendation for 2019 Honda Pilot
    For a quiet and higher capacity roof rack for your 2019 Honda Pilot for carrying a roof tent the Yakima HD roof rack part numbers # Y01156,# Y00148, # Y03541, and # Y00245 is the way to go. The bars are aero shaped for quietness and also have the highest weight capacity as well.
    view full answer...
  • Yakima Roof Rack, Pioneer Platform, and SUP Carrier for 2020 Ram 1500 Crew Cab
    To install the larger Rhino Rack Pioneer platform part # RR42115BF on the roof of your 2020 Ram 1500 crew cab will require a roof rack installed on the naked roof. For that the Yakima HD rack part numbers # Y01158, #Y00146, # Y03541, and # Y06135 as it's the best fitting option withe most weight capacity. This is definitely not an install that requires a pro either as it's fairly easy and straightforward. Then for carrying your 2 SUPs we have the Inno Locker Carrier part # INXA445 which...
    view full answer...
  • Roof Rack and Carriers for 4 Kayaks on Roof of 2017 Ford Expedition
    You can carry up to 4 kayaks with the BigStack part # Y04041 if you also get the cinch strap kit part # Y05006 as well. This would be the route I would go unless you'd really want to go with two separate Bigstacks. For a roof rack for your 2017 Ford Expedition the Yakima HD roof rack part numbers # Y03541, # Y00147, and # Y01159 that you referenced would be a great option for a higher capacity rack with plenty of bar space.
    view full answer...
  • Can Thule Hullavator Fit on Yakima HD Roof Rack that Fits 2020 Subaru Ascent
    The Yakima HD bars do have a channel on the top of them that a Thule Hullavator part # TH898 could easily attach to. There's a cover that's on them which is designed to lower wind noise but that easily comes off and is trimmable. So for a Yakima HD roof rack that fits your 2020 Subaru Ascent with raised rails you'd just need the part numbers # Y01157, # Y03541, and # Y00147 with the Hullavator and you'd be set.
    view full answer...
  • Recommended Fairing for Rola Roof rack on a 2009 Honda Accord Sedan
    Yes! Out of the variety of fairings that we have to offer I recommend the 40" long Inno Fairing # INA261 because it will fit perfectly with the 38" long Rola Sport Series Roof Rack # 59757 for your 2009 Honda Accord. If you let me know what you are wanting to use the roof rack for I can make additional recommendations for you. I have also attached an installation video and a picture of this roof rack on a 2009 Accord Sedan that you can reference.
    view full answer...
  • Are Yakima HD and Corebar Roof Racks Overkill for 2018 Ford F-150
    I understand exactly what you are asking about. So with anything where there's a weight capacity involved (roof rack, towing, etc.) you are limited by the lowest rated component in the setup as the overall weight capacity. So if your roof capacity is 165 lbs the CoreBar rack part # Y00422, # Y00146, and # Y06122 would give you the full capacity plus some and the HD Bar rack part numbers # Y01157, # Y00146, # Y03541, and # Y06122 would be even more.
    view full answer...
  • Recommended Heavy Duty Roof Rack for a 2018 Ford Flex
    It sounds like you might be looking for a roof rack for your 2018 Ford Flex that is both long and heavy duty. If that is the case then the best option for you is going to be dependent on your roof construction. If you have a bare roof then I recommend using the Yakima HD Crossbar System which is composed of part # Y01157, part # Y00148, part # Y03541, and part # Y00233. If you have raised side rails then I also recommend the Yakima HD Crossbar System but this is composed of part # Y01157,...
    view full answer...
  • Will a Sears Sport SV 20 Roof Cargo Box mount to a Rhino Rack on a 2018 Acura RDX
    After checking with the manufacturer, I confirmed that for Acura RDX models after 2018, the Sears Sport SV 20 Roof Cargo Box will no longer fit the factory rails. If you do not have any factory roof rails or crossbars, I recommend the Yakima roof rack kit as an attractive and sturdy roof rack system designed to fit bare vehicle roofs. This package consists of # Y01157 Yakima HD Crossbars, # Y00146 BaseLine Towers for Yakima Crossbars, # Y03541 HD Bar SL Adapter for Yakima BaseLine,...
    view full answer...

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Info for this part was:

Installed by:
Jeff D
Video Edited:
Joshua S
Video Edited:
Jacob T
Video Edited:
Chris R
Test Fit:
Colin H
Test Fit:
Adam E
Expert Research:
Adam R
Edited by:
Daron K
Written by:
Brian T

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