SKU: 87563117572

1978 - 2012 Navistar International 3000-8000, IC CE, 1400-1754, 1823-2674, 4500-4900 and 7100 Front Leaf Spring 55-140

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Description

1978 - 2012 Navistar International 3000-8000, IC CE, 1400-1754, 1823-2674, 4500-4900 and 7100 Front Leaf Spring 55-140*Diagram Spring May Differ From Actual Spring* Number of Leaves 6 (6 PD) Leaf Spring Width 3" A Leaf Spring Length: 25" B Leaf Spring Length: 25" C Leaf Spring Arch: 3 3 4" D Leaf Spring Pack Thickness: 3 1 16" Leaf Spring Capacity: 3,500 lbs. Leaf Spring OEM Number: 1661421C91 Leaf Spring Eye Bushings: Front RB 75 Rear RB 75 Leaf Spring Material: 6 . 423, Pad 1 . 499 Location Front Verify the OEM part number and measurements to confirm compatibility

  • *Diagram Spring May Differ From Actual Spring*
  • Number of Leaves - 6 (6/PD)
  • Leaf Spring Width - 3"
  • A - Leaf Spring Length: 25"
  • B - Leaf Spring Length: 25"
  • C - Leaf Spring Arch: 3-3/4"
  • D - Leaf Spring Pack Thickness: 3-1/16"
  • Leaf Spring Capacity: 3,500 lbs.
  • Leaf Spring OEM Number: 1661421C91
  • Leaf Spring Eye Bushings: Front RB-75 / Rear RB-75
  • Leaf Spring Material: 6/.423, Pad 1/.499
  • 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 55-140 is the front leaf spring for Navistar International 3000, 3400, 3600, 3700, 3800, IC CE, 1452-1754, 1823-1955, 2124-2155, 1400-1652, 2554-2674, 4500-4900 and 7100 . The spring is a 3" wide, is a 6 leaf spring with 1 pad and has a capacity of 3,500 lbs. The OEM part number is 1661421C91.


Models And Year Ranges:

Fits: 1978-1988 Front Navistar International 1452-1754 (5,000 lb. - 8,000 lb. Axles Only)

Fits: 1978-1988 Front Navistar International 1823-1955 (Except 4x4 And 6x6) (5,000 lb. - 8,000 lb. Axles Only)

Fits: 1978-1988 Front Navistar International 2124-2155 (5,000 lb. - 8,000 lb. Axles Only)

Fits: 1989-2004 Front Navistar International 3000, 3400, 3600, 3700 And 3800 (6,000 lb. - 8,000 lb. Axles Only)

Fits: 2000-2004 Front Navistar International IC CE (6,000 lb. - 8,000 lb. Axles Only)

Fits: 1987-2012 Front Navistar International 1400-1652 (6,000 lb. - 8,000 lb. Axles Only)

Fits: 1989-2002 Front Navistar International 2554-2674 (6,000 lb. - 8,000 lb. Axles Only)

Fits: 1989-2002 Front Navistar International 4500-4900 (Except 4x4 And 6x6) (6,000 lb. - 8,000 lb. Axles Only)

Fits: 1989-2000 Front Navistar International 7100 (6,000 lb. - 8,000 lb. Axles Only)

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
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Exchange/Return Notes
  • We offer a 30-day return/exchange service after receiving.
  • Final sale items are not eligible for returns or exchanges.
  • To process your return/exchange, please contact us at [email protected]
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SKU: 87563117572

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4.1 ★★★★★
Based on 864 reviews
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A
Verified Purchase
Aimee L Smith
Boise, US
★★★★★ 5
Seems like a good buy
So far happy with it. Still can't Crack my neck but not waking up w a stiff neck anymore thanks
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on January 6, 2026
J
Verified Purchase
Jacky Liu
Houston, US
★★★★★ 5
Really good pillows
Number of Items: 1, Number of Items: 1
I’ve been using this pillow for a while now and it’s honestly one of the most comfortable pillows I’ve tried. It has a soft, cloud-like feel but still gives enough support for my neck and shoulders. I’m a side sleeper and it keeps its shape well through the night. The material feels high quality, and it doesn’t go flat like cheaper pillows. Definitely improved my sleep quality and worth the purchase.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 12, 2026
D
Verified Purchase
DPLK
Louisville, US
★★★★★ 5
Soft AND supportive
Number of Items: 1
I knew I needed a very soft pillow - all the foam pillows I had bought recently to try to upgrade our home pilllow selection seemed ok to the touch but were still too firm once I tried them out, but recently I also had some neck pain that needed some gentle support and the old old foam pillow I had that was so very soft was losing its supportive qualities and the pain wasn’t getting better. This one seemed by description to fit the bill- very soft by the company’s own definition but also with support. I’m happy to report this is exactly as advertised- the softest foam pillow I’ve tried out of the box but also good support. Pain has improved since I started using this pillow. I would buy more if we need more pillows, it’s perfect for me and I think would be comfortable for most people. I think you just need to figure out how firm you need your pillow and also height preference . I’m an all over sleeper -back, side, even belly sometimes, so it’s fine for me, but it is a little taller compared to other pillows I’ve bought recently. I didn’t compare/try other prominent pillow brands, mostly my experience is Ikea (my daughter uses a very flat and nice foam pillow from them that is even a little pricier than this one and it works well for her), and whatever brands happen to be available at target and Costco. This price point for a name brand is reasonable, I think; I was looking at other brands way over $100, and I was willing to spend that much for something that would work long term, so this one working was great. Also, this definitely does not have any cooling effect technology, which is fine by me, but something to consider if you do like cool pillows. (Although, PSA: I recently had to throw away older foam pillows that had those cooling gel panels because the gel panels started disintegrating into sticky ooze; gross and had to throw away whole pillow because couldn’t dissociate from rest of the pillow. Sad cuz the foam part of those pillows were fine.) Anyway, if you like softer pillows but want good support, this one works well and is worth trying!!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2025
L
Verified Purchase
Lori Wornom
Belleville, US
★★★★★ 4
Flatter than a regular pillow but nice and soft
Number of Items: 1
Is it softer than a typical memory foam pillow? Yes. But it’s also a lot flatter. I don’t find this pillow rebounds very well. It’s good for stomach sleepers but not so much for side sleepers. I’m a 2/3 of the night side sleeper so it’s unfortunately not my magic pillow.
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Reviewed in the United States on February 11, 2026
M
Verified Purchase
Matt
Omaha, US
★★★★★ 5
Best pillow for my neck pain.
Number of Items: 1
I've tried so so many pillows to relieve my neck pain at night and this one is the first pillow that has actually worked. I was skeptical at first as this pillow is heavy and dense but one night and I was hooked. I couldn't believe I found a pillow that actually not only was comfortable but also relieved my neck strain. It's worth the cost to now be able to wake up without pain.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 8, 2026

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