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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Ships within 48 hours · Estimated delivery Jul 18 - Jul 23

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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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4.5 ★★★★★
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Nobody
Waukegan, US
★★★★★ 5
GREAT PROPDUCT
Size: 2 fl oz
EXCELLENT
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 27, 2026
A
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Amazon Customer
Houston, US
★★★★★ 4
Cleans Out Working Carburetors
Size: 2 fl oz
I recommend this product for engines that will in fact start but not run well. I highly recommend it for that specific purpose, which it is designed for. It cleans the inner workings of the carburetor. Of course, you will have a cleaner carburetor if you take it apart and clean it with proper tools and a proper carburetor cleaner. You spray it in the gas tank, start the engine, and let it run a bit. It will not start an engine with a totally plugged up carburetor. Nothing is going to do that. Nor is it a fuel stabilizer, as one previous reviewer seemed to think. Nor is it a product to be used to bring life back to stale gasoline, as another reviewer seemed to think. The only thing to do with stale gasoline is drain it out and pitch it. Nor is it a product to be used for cleaning a carburetor you have taken apart to clean. You should use a proper carburetor cleaner for that purpose. I've given it four stars because it cleans out mildly plugged up carbs. It is not a miracle solution for really neglected carbs as the name suggests.
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Reviewed in the United States on April 12, 2020
R
Verified Purchase
Ray
Pawtucket, US
★★★★★ 5
Helps fixing small engines
Size: 2 fl oz
⭐⭐⭐⭐⭐⭐⭐
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Reviewed in the United States on May 16, 2026
J
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JustAGeek
Port Orchard, US
★★★★★ 5
It works like magic, saved me $150.
Size: 2 fl oz
I filled 1/4 tank of gas into my snowblower which I could not started, sprayed about 15 seconds of Start Your Engines, rock snowblower to mix well, let it sat for an hour. I pulled string and yet couldn't start engine. Unscrewed spark plug and spray some into cylinder, put the spark plug back and pull the string. ENGINE STARTED!!! SAVED ME AT THE LEAST $150.
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Reviewed in the United States on March 1, 2026
B
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Bear
Phoenix, US
★★★★★ 5
Great
Size: 2 fl oz
Great
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Reviewed in the United States on May 22, 2026

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