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Description
2004-2008 Ford & Lincoln F150, Mark LT 2 & 4 Wheel Drive Rear Leaf Spring - 3 Leaves - 43-1679*Diagram Spring May Differ From Actual Spring* Number of Leaves 3 (2 1) Leaf Spring Width 3" A Leaf Spring Length: 25 5 8" B Leaf Spring Length: 31 3 8" C Leaf Spring Arch: 7 1 4" D Spring Pack Thickness: 1 5 8" Leaf Spring Capacity: 1,500 lbs. Leaf Spring OEM Numbers: 6L3Z5560RD and 6L345560RF Leaf Spring Eye Bushings: Front RB 275 Rear RB 276 Includes Front and Rear Eye Bushings Leaf Spring Material: 2 380 2ND 1 662 Location Rear 2 Center Bolts New
- *Diagram Spring May Differ From Actual Spring*
- Number of Leaves - 3 (2/1)
- Leaf Spring Width - 3"
- A - Leaf Spring Length: 25-5/8"
- B - Leaf Spring Length: 31-3/8"
- C - Leaf Spring Arch: 7-1/4"
- D - Spring Pack Thickness: 1-5/8"
- Leaf Spring Capacity: 1,500 lbs.
- Leaf Spring OEM Numbers: 6L3Z5560RD and 6L345560RF
- Leaf Spring Eye Bushings: Front RB-275 / Rear RB-276
- Includes Front and Rear Eye Bushings
- Leaf Spring Material: 2/380 2ND 1/662
- Location - Rear
- 2 Center Bolts
- New Body Style
Verify the OEM part number and measurements to confirm compatibility before purchasing. Need help? Visit: How to Identify a Leaf Spring.
Leaf spring 43-1679 is the rear leaf spring on 2004-2008 Ford F150 2 wheel and 4 wheel drive trucks. Also fits Lincoln Mark LT. The rear spring is 3" wide, is a 3 (2/1) leaf spring and the capacity is 1,500 lbs. The OEM numbers are 6L3Z5560RD and 6L345560RF.
Models And Year Ranges:
Fits: 2004-2008 Rear Ford F150 (2WD And 4WD)
Fits: 2006-2008 Rear Lincoln Mark LT (2WD And 4WD)
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Exchange/Return Notes
- We offer a 30-day return/exchange service after receiving.
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4.1 ★★★★★
Based on 19 reviews
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Product Reviews
★★★★★ 5
MR. SULU… PREPARE FOR WARP SPEED. ENGAGE.
Rocket fast. Sleek, smooth design. Have another adapter from different company, which tends to fail when utilizing more than 1.5 GB. It just decides to downshift the first gear.
This adapter does not.
Speeds are scary.
SpeedTest results are fun, watching the gauge being download teat and swing radically to the right. Pinned.
Speeds coming in at 2,327 mb/s uploads at 2,150 mb/s (depending on time of day.
Great for streaming content from laptop 4K, Dolby Vision Dolby Atmos, no problems… smooth no hiccups
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Reviewed in the United States on May 28, 2026
★★★★★ 5
Great speed, connection sometimes blocked but there is a solution.
I wanted to take advantage of my 3gb fiber connection, and the best way was to connect my Mac M1 via Ethernet. This looked like a good solution. It started pretty good. I could almost max out my 2.5gb port on my switch. Then a strange thing started happening.
At odd, but consistent, intervals, my connection would stop and say it was 'blocked'. If I waited, it would come back to active. If I switched Thunderbolt ports, it would come back instantly. Annoying.
After a couple of days trying different ports, cables, DHCP vs static IP, and WiFi working flawlessly, I figured it was something in the Mac. Many Google searches directed me to the Thunderbolt Bridge. Apparently, this feature is to directly connect two Macs together IP for a high-speed connection. But it has been known to cause my issue.
I removed the Thunderbolt Bridge service (I can add it back later if needed), rebooted, and have been working great for over a day now. Hopefully, this might help someone in the future.
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Reviewed in the United States on May 24, 2026
★★★★★ 4
Installation instructions are flaky, but unit works well when installed
I bought this because I wanted a simple way to upgrade an old tower PC to support 2.5gig Ethernet and I thought it would be easy. Well, it wasn't. The user manual that came with the unit had instructions to download drivers. After a lot of work, I found them, but the files were empty. Then I noticed that a new USB device, a CD rom drive, had been added to my PC.
I unplugged the adapter and went into device manager and deleted the device and its files. When I plugged the unit back in, it was recognized as a NIC and started working. The unit runs at 2.5gig and seems to work well but I keep wondering if, the next time I have to unplug it, it will go back to looking like a CD drive. Oh, I did not need drivers. The unit is installed automatically under Windows 10.
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Reviewed in the United States on March 12, 2026
★★★★★ 5
Say Goodbye to Wi-Fi Woes—This Adapter Delivers
I couldn’t be happier with this UGREEN USB C to Ethernet Adapter! As someone who needed a reliable solution to hardwire my laptop to an Ethernet wall outlet, this adapter has been flawless. The setup was truly plug-and-play—no drivers or complicated installations required—and I was connected in seconds.
Not only does it deliver an impressive 2.5Gbps speed, but it also provides a rock-solid connection that’s perfect for streaming, large file downloads, and stable video calls. The sleek aluminum design is a bonus, as it feels sturdy and looks great alongside my tech setup. It’s compact enough to toss into my bag without taking up much space, making it easy to use on the go.
This adapter is a fantastic investment for anyone seeking fast and dependable wired internet connectivity. I’m thrilled with its performance and highly recommend it. Five stars all the way!
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Reviewed in the United States on April 10, 2025
★★★★★ 5
Great dock, bought another
This was the cheapest option with everything I needed. It has worked well for a few months so I bought another.
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Reviewed in the United States on June 10, 2026