Adapter to Connect JetStream Bars to BaseLine Towers
Updated 12/22/2025 | Published 10/18/2024 >
Question:
I have baseline towers and i am upgrading to jetstream bars from core bars. I have 8880637 adapters in the cart but im reading here in the description that these HD adapters will also work? The jetstream adapters 8880637 also say they will work for HD bars. but In your Q A it is stated that these will not work for Jetstream bars? These HD bar adapters are 10 bucks cheaper for 4. Will they work for jetstream bars to baseline towers? Thanks
asked by: Brett
Expert Reply:
Hi Brett; they look the same but according to Yakima the # 8880637 is what you need for your JetStream bars. The other adapters are just for the HD bars. Yakima is usually pretty good about letting us know if things work even when they aren't designated to so I'll trust them on this one.
Product Page this Question was Asked From
Replacement Adapter and Seat for Yakima JetStream and HD Crossbars - Qty 1
- Accessories and Parts
- Roof Rack
- Adapters
- Crossbars
- Yakima
more information >
Continue Researching
- Search Results: load stop
- Search Results: baseline towers
- Search Results: bunk bracket
- Shop: BaseLine Towers for Yakima Crossbars - Naked Roofs - Qty 2
- Shop: Replacement Adapter and Seat for Yakima JetStream and HD Crossbars - Qty 1
- Video: Checking Out the Replacement Adapter and Seat for Yakima JetStream and HD Crossbars
- Search Results: roof bike racks
- Shop: CE Smith 5" Offset Bracket for Spool Roller Assembly - Galvanized Steel - Qty 1
- Search Results: yakima overhaul accessories
- Search Results: ladder stops
- Search Results: yakima ladder
- Shop: Roof Rack
- Shop: Yakima HD Crossbar - Aluminum - 60" Long - Qty 1
- Shop: BaseClip Fit Kit for Yakima BaseLine Roof Rack Towers - Qty 2
- Shop: Yakima HD Crossbar - Aluminum - 55" Long - Qty 1
- Shop: Yakima HD Crossbar - Aluminum - 68" Long - Qty 1
- Q&A: Parts Needed For Adding Single Yakima HD Crossbar To Roof Of 2018 Chevrolet Silverado 1500
- Q&A: Yakima HD Cross Bars T-Slot Dimensions
- Q&A: Recommended Aero-Style Roof Rack for a 2018 Toyota Avalon with Bare Roof
- Q&A: Recommended Roof Rack for a 2024 Toyota Corolla Hatchback w/ No Rails or Crossbars
- Q&A: Can Thule WingBar Evo Crossbar Fit On Yakima SkyLine Towers
- Q&A: How Many Towers are Included in the Yakima Baseline Towers # Y00146?
- Q&A: Parts Needed To Add Single Yakima HD Crossbar To Roof Of a 2022 Toyota Tacoma Double Cab
- Article: Is It Illegal to Leave My Hitch on My Truck?
- Article: Roof Rack Information


Robin H.
12/22/2025
Hey Brett, did you end up going with the JetStream adapters for your Baseline towers? Knowing how they worked out could help others comparing the HD and JetStream options.