SKU: 37645751545

2004-2008 Ford & Lincoln F150, Mark LT 2 & 4 Wheel Drive Rear Leaf Spring - 3 Leaves - 43-1679

Sale price$134.99 Regular price$149.99
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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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SKU: 37645751545

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gambagal
West Palm Beach, US
★★★★★ 5
I was skeptical, but for me, this one works.
Size: 90 Count (Pack of 1)
I am usually skeptical of these "improve-your-whatever-with-this" products. But much to my surprise, for me this one lives up to the hype. After about a week, there was as noticeable improvement in my overall memory, especially older memories. My recall is faster, I retain things longer, and learn new things more quickly. As a side benefit, I am also now able to quickly find alternative solutions to everyday problems that come up.
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Reviewed in the United States on May 18, 2026
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WhatIsThat
Port Orchard, US
★★★★★ 5
GREAT product!! No complaints at all!
Size: 90 Count (Pack of 1)
So I got this product as an experiment. I don’t like taking prescriptions - but that is just me. I have the most boring job on the planet. And it’s all I can do to make it just through the morning without falling asleep. when I saw this product, I decided to give it a try. I am totally and completely shocked how well this works. It doesn’t make me jittery at all. It just makes me feel alive and alert and ready to roll. And I can focus on the monotonous tasks at my job. When I do take them, I have to take them in the morning. they do last all day - again - this is for me. but I found when I took them in the afternoon, I was still wide awake at 1:00am. Which put a damper on my trying to drag myself out of bed and to work at the most boring job ever.
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Reviewed in the United States on May 17, 2026
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Angie
Alexandria, US
★★★★★ 4
good experience so far
Size: 60 Count (Pack of 1)
I’ve been taking Qunol Brain Health for a little while now, and overall I’ve had a good experience with it. What stood out to me first was that it didn’t upset my stomach, which I’ve run into with other supplements. I feel like I’ve noticed a difference in my ability to stay focused during the day, especially when I’m working on tasks that usually make my mind wander. My energy levels also feel a bit steadier, without that late afternoon mental fog. The capsules are easy to swallow, and I like that it combines several ingredients aimed at supporting memory and concentration rather than having to take them separately. It’s obviously not an overnight miracle, but with consistent use I do feel sharper and more mentally “on.” The only downside for me is the price—it’s a little higher than some other brain supplements I’ve tried. But considering the quality and how it makes me feel, I think it’s worth it.
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Reviewed in the United States on August 21, 2025
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Becky Wheeler
Louisville, US
★★★★★ 5
Good product
Size: 60 Count (Pack of 1)
This product seems to help.
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Reviewed in the United States on May 30, 2026
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Carmen
Lake Worth, US
★★★★★ 3
Way too expensive
Size: 90 Count (Pack of 1)
Great product, but Costco is more affordable even when not on sale.
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Reviewed in the United States on May 7, 2026

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