1970-2021 Navistar International & Caterpillar Paystar 5000, HX Series and CT Series Front Leaf Spring 55-1222
SKU: 4906612788

1970-2021 Navistar International & Caterpillar Paystar 5000, HX Series and CT Series Front Leaf Spring 55-1222

$152.37 $169.30
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Description

1970-2021 Navistar International & Caterpillar Paystar 5000, HX Series and CT Series Front Leaf Spring 55-1222* Diagram May Differ From Actual Spring* Number of Leaves 7 Leaf Spring Width 4" A Leaf Spring Length: 25" B Leaf Spring Length: 29" C Leaf Spring Arch: 5 3 4" D Leaf Spring Pack Thickness: 3 7 8" Leaf Spring Capacity: 8,000 lbs. Leaf Spring OEM Numbers: 1654696C91 and 3521859C91 Leaf Spring Eye Threaded Bushings: Front TB 26 Rear TB 26 Leaf Spring Material: 2 558 2 527 2ND 2 625 Shock eye 323 Location Front Verify the OEM part number and measurements

  • * Diagram May Differ From Actual Spring*
  • Number of Leaves - 7
  • Leaf Spring Width - 4"
  • A - Leaf Spring Length: 25"
  • B - Leaf Spring Length: 29"
  • C - Leaf Spring Arch: 5-3/4"
  • D - Leaf Spring Pack Thickness: 3-7/8"
  • Leaf Spring Capacity: 8,000 lbs.
  • Leaf Spring OEM Numbers: 1654696C91 and 3521859C91
  • Leaf Spring Eye Threaded Bushings: Front TB-26 / Rear TB-26
  • Leaf Spring Material: 2/558 2/527 2ND 2/625 Shock eye/323
  • Location - Front

 

Verify the OEM part number and measurements to confirm compatibility before purchasing. Need help? Visit: How to Identify a Leaf Spring.

 

Leaf spring 55-1222 is the front leaf spring for Navistar International Paystar 5000, HX515 and HX520. Also fits Caterpillar CT680 and CT681 heavy duty trucks. The spring is 4" wide, is a 7 leaf spring and the capacity of the spring is 8,000 lbs. The OEM part numbers are 1654696C91 and 3521859C91


Vehicle Models And Year Ranges:

Fits: 1970-1999 Front Navistar/International 5050SF - 5070SF With Set Forward Axle (28" From Bumper To Axle)

Fits: 2000-2016 Front Navistar/International 5500 and 5500i

Fits: 2016-2021 Front Navistar/International HX515 and HX520

Fits: 2012-2017 Front Caterpillar CT680 and CT681

Shipping Notes
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Exchange/Return Notes
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  • Final sale items are not eligible for returns or exchanges.
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SKU: 4906612788

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Paige
Port Orchard, US
★★★★★ 5
Great for potty training
Size: 3T-4T, Unit Count: 20
We really like these pull ups and they have worked well for us during potty training. They are easy to pull on and off, which is great for toddlers who are learning to be more independent. They fit well and do a good job containing messes without leaking. I also like that they feel comfortable and not too bulky, so my child can move around easily. Overall, these have been a reliable option for us and something we continue to use during this stage.
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Reviewed in the United States on May 3, 2026
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ape
Grantham, US
★★★★★ 5
Preferred by daycare teachers!
Size: 4T-5T, Unit Count: 99
Preferred by daycares because they open and close on the sides and kids can learn to pull on and take on on their own
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Reviewed in the United States on April 9, 2026
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Michelle E.
San Leandro, US
★★★★★ 4
Nice
Size: 3T-4T, Unit Count: 112
Good pull ups, it could get a little linty but it fits perfectly on my toddler. It stretches which I love. I do love how I could strap and unstrap the sides of the pull up. The designs on the pull up are cute. It holds a lot of pee and soaks it up very well. It’s comfortable on my toddler and the pee and poop doesn’t leak out of it. It is worth the money.
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Reviewed in the United States on November 18, 2025
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The Prime Perspective
Charlottesville, US
★★★★★ 5
The Fast & the Curious- Potty Drift
Size: 5T-6T, Unit Count: 60
Who knew toddler potty training required both a PhD in fluid dynamics and Jedi mind tricks? These Pull-Ups prove the science part: leak-proof, absorbent, and surprisingly soft. The toddler-psychology part? That’s a battle of wills. Our little one was a die-hard fan of Huggies diapers—too loyal, in fact. We begged, we bribed, we pleaded: “Please, let’s move on!” Resistance was fierce. So we went stealth mode, sneaking Pull-Ups on at night like parents on a covert mission. Credit to mom—she cracked the code and finally got the kid interested in the toilet. Suddenly, the “potty rush” moments became less of a flood and more of a sprint. Diapers were too slow to peel off; Pull-Ups gave our little sprinter the speed boost they needed. They’re soft, rash-free, and practically leak-proof (unlike that other brand we don’t speak of). Pro tip: size up for easier toddler self-removal. The result? A drier, happier kid, less laundry for us, and the toilet finally earning MVP status. If you’re ready for your toddler to graduate from Diaper University, this is the diploma. Bonus: you’ll save money too.
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Reviewed in the United States on September 3, 2025
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Michelle Vincent
Charlottesville, US
★★★★★ 5
Mom of 3 recommend!
Size: 5T-6T, Unit Count: 14
I'm using these again for the 3rd time and they're great as always. My 3rd is still having some issues at night time with bed wetting, and as they get older the bigger the mess, so these truly hold up to a full bladder. And they don't smell by morning like some diaper brands. I'm usually against pull ups, but these are great for up and down ease of use and that added protection when it comes to potty training. I love the bigger size inclusion for larger children which we struggle with for comfort compared to other brands.
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Reviewed in the United States on February 14, 2026

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