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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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4.6 ★★★★★
Based on 1553 reviews
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Product Reviews
★★★★★ 5
Must-Have for Active Dogs!
Style: Sport, Size: Large
The Chuckit Sport 26L Dog Ball Launcher has been a game-changer for my large dog! My 80-pound Labrador loves to play fetch, and this launcher makes it so much easier and more enjoyable for both of us.
The 26” length gives me the leverage to throw the ball much farther than I could by hand, which really helps burn off my dog’s energy. The included large ball (3”) is the perfect size for big dogs, and I appreciate that it’s made from durable rubber, so it withstands a lot of chewing and rough play.
What I really love is that the launcher is so lightweight and easy to use. I can play fetch with my dog for extended periods without my arm getting tired. The ergonomic handle also provides a comfortable grip, which is a nice touch.
If you have a large, active dog, the Chuckit Sport 26L is a must-have. It’s well-made, durable, and makes fetch more fun for both you and your dog. Highly recommend!
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Reviewed in the United States on September 3, 2024
★★★★★ 5
ChuckIt is AMAZING!
Style: Sport, Size: Large
I can't throw a ball to save my soul. Just got this today and lobbed a ball to the far end of my 1- acre yard. The dog loves it, and I love it!
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Reviewed in the United States on March 8, 2026
★★★★★ 4
I recommend using the KONG Extreme Dog Toy
Style: Sport, Size: Large
Helpful for throwing as much as my dog wants to fetch. I actually had to get a cortisone injection in my shoulder a few months after getting my dog - never had a dog with this much energy before! The Chuckit really helps.
Downside: The ball that comes with it is larger than a tennis ball, so may be too much for smaller doge. I can't imagine my sister-in-law's french bulldog carrying it! Also, in our house it gets destroyed within minutes, as my dog is a strong chewer. For this situation, I recommend using the KONG Extreme Dog Toy, Black, size Large.
This is shaped sort of like a snowman, which means it bounces unpredictably at times. My dog eventually chews the "head" off of this toy, but the remaining 2/3 still fits in the Chuckit (and is actually easier to throw with the "head" missing!). One caveat: the KONG is significantly heavier than the ball included with the Chuckit, so be aware of that...
Also, we ordered our first Chickit in October 2015, then needed to replace it in May of 2017, as it broke. I think the plastic became brittle over that time, as we left it out in the sun & rain in Florida. Since it is cheap to replace, that's not a big deal. (We ordered three Kong toys over that same period of time!)
To summarize, it's a very helpful tool to get the ball further, faster, with less strain, than without it. Knowing there are alternatives to the included ball for heavy chewers makes it worthwhile.
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Reviewed in the United States on July 19, 2017
★★★★★ 5
Great Ball Launcher!
Style: Sport, Size: Large
Our dogs love this ball launcher! I can throw the ball long distances without any arm strain. The balls wear out, and as described by others, tennis balls don’t fit. Buy extra balls if this is of concern. We bought a few of the “Chuck It” rubber 3” balls and they have worked well for our dogs. It’s a great value and fun for the dogs.
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Reviewed in the United States on March 28, 2025
★★★★★ 5
Chuckit!! Just Chuck it!!
Style: Sport, Size: Large
Chuck it further than your skinny little arms can chuck it. Doggo loved this, I loved this and when we were done Doggo promptly hid it under the porch so I couldn’t take it from him. It’s not a squeaky toy, it’s for fetch. You wing it out toward the yard and it flies, bounces if it’s lucky then is attacked in an adoring manner. We like it!!
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Reviewed in the United States on May 31, 2026