SKU: 82150283548

2006 - 2021 Kenworth & Peterbilt T400-T880, W900B-W990 And 357-587 Front Leaf Spring - 3 Leaves - 59-528

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Description

2006 - 2021 Kenworth & Peterbilt T400-T880, W900B-W990 And 357-587 Front Leaf Spring - 3 Leaves - 59-528*Diagram Spring May Differ From Actual Spring* Number of Leaves 3 (PD 3) Leaf Spring Width 4" A Leaf Spring Length: 27 1 4" B Leaf Spring Length: 32 3 16" C Leaf Spring Arch: 5 1 4" D Leaf Spring Pack Thickness: 3 5 8" Leaf Spring Capacity: 10,000 lbs. Leaf Spring OEM Number: B81 6018 001 Leaf Spring Eye Bushings: Front RB 308 Rear RB 308 Leaf Spring Material: PD 499 3 999 Full Taper Location Front Verify the OEM part number and measurements to

  • *Diagram Spring May Differ From Actual Spring*
  • Number of Leaves - 3 (PD/3)
  • Leaf Spring Width - 4"
  • A - Leaf Spring Length: 27-1/4"
  • B - Leaf Spring Length: 32-3/16"
  • C - Leaf Spring Arch: 5-1/4"
  • D - Leaf Spring Pack Thickness: 3-5/8"
  • Leaf Spring Capacity: 10,000 lbs.
  • Leaf Spring OEM Number: B81-6018-001
  • Leaf Spring Eye Bushings: Front RB-308 / Rear RB-308
  • Leaf Spring Material: PD/499 3/999 Full Taper
  • 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 59-528 is the front leaf spring on Kenworth W900B, W900L, W990, T400, T440, T450, T470, T600, T660, T680, T800 and T880. Also fits Peterbilt 365, 367, 388, 389, 567 and 587. The spring is 4" wide, is a 3 leaf spring with 1 pad and has a capacity of 10,000 lbs. The OEM part number is B81-6018-001. Fits 14,600 lb through 24,000 lb axles only. Models with eyes both ends type springs. Springs in the same OEM number series are the same except for the bushing and all springs use a 2.08" diameter eye: RB-308 - 7 1/2" Long and RB-324 - 6 11/16" Long.

Models And Year Ranges:

Fits: 2006-2021 Front Kenworth T400, T440, T450, T470, T600, T660, T680, T800 and T880 (14,600 lb. - 24,000 lb. Axles Only)

Fits: 2008-2021 Front Kenworth W900B, W900L and W990 (14,600 lb. - 24,000 lb. Axles Only)

Fits: Front Peterbilt 365, 367, 388, 389, 567 and 587 (14,600 lb. - 24,000 lb. Axles Only) (Standard Axle Position)

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: 82150283548

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4.5 ★★★★★
Based on 29 reviews
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M
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Michelle
Whiting, US
★★★★★ 5
Fun toy that is tough!
Pattern Name: Cage Ball, Size: Large - 4 Inch / 8.5 oz
This is a great ball that my dog loves and he has not destroyed it!k
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 13, 2026
A
Verified Purchase
A
Waukegan, US
★★★★★ 5
Strongest iv found so far
Pattern Name: Ball, Size: Large - 3 Inch / 12 oz
It lasted longer than most but it’s in pieces after 2 weeks
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on February 28, 2026
A
Verified Purchase
Audrey Diane Salyers
Lowell, US
★★★★★ 5
Awesome Ball
Pattern Name: Ball, Size: Large - 3 Inch / 12 oz
This ball is so awesome my dog can't chew it all..and was not expensive
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on March 24, 2026
J
Verified Purchase
Jason Brown
Charlottesville, US
★★★★★ 1
A total joke.
Pattern Name: Cage Ball, Size: Large - 4 Inch / 8.5 oz
I was so hopeful and really wanted this to be as good as the sellers claimed. After all, they boast of a lifetime replacement (a joke and be sure to read the ridiculous terms lol). I have a "pocket pitty" and she loves rubber toys. There is not much I have found that can withstand her force; however, reading reviews AND seeing their warranty, I wanted to give it a try. Typically, I stick with Java wood and XL super dense knotted ropes, as that has been the only thing that can last any real amount of time. Thankfully, she never goes after our stuff or household items/furniture, just her toys. The ball arrived. I checked it over. It looked semi promising. I was hopeful. The design does allow for them to leverage their paw strength by getting it between the rubber bars and then pull with their teeth. Within 3 minutes of her having it, she already had a bar ripped off. Within 5 minutes, she had 3 bars ripped off. Don't get me wrong, she had a blast. But this is by no means strong enough for an actual aggressive chewer. Perhaps there is just not anything rubber that can handle her jaws, but now I can't get a replacement because the warranty only covers if the product is defective. It doesn't cover chewing damage (on any of their products). The advertising is very misleading so be aware. Why a replacement if she will just destroy it again you may wonder? She loves to go after a ball, but now I know she can kill this one, I keep them in a drawer and only let her play fetch with it while supervised. I will say though, I you have a puppy, I think this would be great for them as long as they are not extra large. The material has give, which is nice. But if you have a real aggressive chewer, don't waste the money.
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Reviewed in the United States on March 7, 2023
T
Verified Purchase
TERESA
Alexandria, US
★★★★★ 4
Not indestructible, but is very tough.
Pattern Name: Ball, Size: Large - 3 Inch / 12 oz
My dog destroyed this, but it took a little longer than it usually does. Would love to know how the lifetime replacement works. There is no information that I see on how to contact the seller.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on December 8, 2025

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