SKU: 41729465264

1978 - 2021 Navistar International & Fire Apparatus 4100-4400, MV, HV, 7300-7700, 8500, 8600, S-Series, Amtran, 9000 Series, Lonestar, Prostar And Paystar 5000 Rear Helper Spring 55-037

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Description

1978 - 2021 Navistar International & Fire Apparatus 4100-4400, MV, HV, 7300-7700, 8500, 8600, S-Series, Amtran, 9000 Series, Lonestar, Prostar And Paystar 5000 Rear Helper Spring 55-037Number of Leaves 4 Leaf Spring Width 3" A Leaf Spring Length: 19 3 4" B Leaf Spring Length: 19 3 4" C Leaf Spring Arch: 3" D Leaf Spring Pack Thickness: 1 7 16" Leaf Spring Capacity: 2,250 lbs. Leaf Spring OEM Number: 473725C91 Leaf Spring Eye Bushings: Front Slipper Rear Slipper Leaf Spring Material: 4 . 360 Location Rear Verify the OEM part number and measurements to confirm compatibility before purchasing. Need help? Visit: How to Identify a Leaf

  • Number of Leaves - 4
  • Leaf Spring Width - 3"
  • A - Leaf Spring Length: 19-3/4"
  • B - Leaf Spring Length: 19-3/4"
  • C - Leaf Spring Arch: 3"
  • D - Leaf Spring Pack Thickness: 1-7/16"
  • Leaf Spring Capacity: 2,250 lbs.
  • Leaf Spring OEM Number: 473725C91
  • Leaf Spring Eye Bushings: Front Slipper / Rear Slipper
  • Leaf Spring Material:  4/.360
  • Location - Rear


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

 

Leaf spring 55-037 is the rear helper spring for Navistar International 4100-4400, MV607, MV607H, 7300-7700, HV507, HV513, HV607, HV613, 8500, 8600 Series 1400-8300, S-Series, 1400-8300, Amtran Genesis, Amtran FE, RE, Paystar 5000, 9100-9900, Lonestar, Prostar, LT625 and RH613. Also fits Fire Apparatus Ferrara, Pierce and Emergency One. This spring is 3" wide, is a 4 leaf spring and has a capacity of 2,250 lbs. The OEM part number is 473725C91.


Models And Year Ranges:

Fits: 2002-2021 Rear Navistar International 4100, 4200, 4300, 4400, MV607 And MV607H

Fits: 2002-2021 Rear Navistar International 7300, 7400, 7500, 7600, 7700, HV507, HV513, HV607, GV613, 8500 And 8600

Fits: 1978-1988 Rear Navistar International S Series

Fits: 1987-2012 Rear Navistar International 1400-1652

Fits: 1989-202 Rear Navistar International 2554-2674

Fits: 1989-2004 Rear Navistar International 3000, 3400-3900

Fits: 1989-2003 Rear Navistar International 4500-4900

Fits: 1988-2003 Rear Navistar International 7100, 8100-8300

Fits: To 2004 Rear Navistar International Amtran Genesis, Amtran FE And RE; IC, CE, FE And RE

Fits: Rear Navistar International Paystar 5000

Fits: 1981-2021 Rear Navistar International 9100-9900, Lonestar, Prostar, LT625 And RH613

Fits: Fire Apparatus Pierce (With International Suspension)

Fits: Fire Apparatus Ferrara

Fits: Fire Apparatus Emergency One (With International Suspension)

Shipping Notes
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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]
  • Please click here for more details>>> Return & Exchange Policy
SKU: 41729465264

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4.2 ★★★★★
Based on 26 reviews
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Stephanie
Omaha, US
★★★★★ 5
Very high quality suit for the price! Might as well buy, then rent.
Color: Deep Grey (Stretch Fabric), Size: X-Small
I bought this for my son for his Prom, as he decided to go last minute. He weighs around 125 pounds and is about 5'11. The XS fit was pretty amazing. As the supplier says, follow the size chart on the second picture. There is also some stretch to the material and the pants have belt loops. The only thing we noticed that we didn't like is that the sleeves were a little large at the opening around the wrist. Since the cuff-links are sew on, there isn't really on easy way to adjust this. All in all, this was a great purchase and I would highly recommend YND suits.
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Reviewed in the United States on May 20, 2024
Y
Verified Purchase
yusef young
Fort Morgan, US
★★★★★ 5
Good buy for sure.
Color: Burgundy (Stretch Fabric), Size: X-Large
The suit looks and feels great for the price I’m 6’3 190-200lb and ordered a size XL. I’m going to have the sleeve dropped a tad bit and waist taken in. The hem is perfect and to my liking. Will be buying 2-3 in the future.
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Reviewed in the United States on March 11, 2026
T
Verified Purchase
TERRI Ann
West Palm Beach, US
★★★★★ 5
We’re happy!
For the price, this suit was great. My son is a bigger guy and when we rent tuxes, the pants always look terrible. This one, we were happy with. He usually wears a 2x in clothes but we sized up to the 3x. He’s 6’2” and prob 270. Maybe more but the vest was still a little snug.
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Reviewed in the United States on October 14, 2025
A
Verified Purchase
Andre L. Aragon
Natrona Heights, US
★★★★★ 5
Caviar and Champagne look for a hot dog and beer price!!
Color: Black (Stretch Fabric), Size: Large
At this point in my life, my days of spending close to $1K for a suit are over. Now, more worried about saving enough money for retirement AND my two kids' college funds. So when I was invited to a "black tie affair" I thought, "Crap. I don't own a tuxedo and will have to rent." Calling my local tux rental shop, I was SHOCKED at how much a one-night rental would cost (average $150/night - yes, it's been over 20 plus years since I had to rent a tux but wow)! So my wife suggested I look on Amazon and see if there was something that might work. After seeing the reviews for the YND Slim Fit tuxedo, I decided to take a chance. And boy, am I glad I did!! I have been thoroughly impressed. The value for money is outstanding—this suit offers a high-end look and impeccable fit at a fraction of the cost compared to suits 10 times its price. The suit exudes sophistication and style, making a powerful statement. The attention to detail in design is evident, and the finish is almost on par with luxury suits that come with a hefty price tag. The fit is nicely tailored for an "off-the-rack" suit, not too boxy or not too "slim" (I'm 6'0, 190lbs, and purchased the 'Large'). The suit highlights the best features while providing optimum comfort. In summary, this suit is a true gem, offering exceptional value, a remarkable look, a superb fit, and style that rivals much more expensive options. Highly recommended for those seeking quality without breaking the bank.
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Reviewed in the United States on October 13, 2023
A
Verified Purchase
Amazon Customer
Omaha, US
★★★★★ 5
Very happy with it
Color: Black (Stretch Fabric), Size: Small, Color: Black (Stretch Fabric), Size: Small
Very nice suit! Pay attention to the measurements and sizing! It worked out great for a prom suit. It did come with a vest, tie and cuff links also.
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Reviewed in the United States on May 2, 2026

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