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- USA
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Ships within 48 hours · Estimated delivery Jul 9 - Jul 14
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Description
Universal 8 Dual Zinc Power Brake Booster PB8531Overview: Universal 8" Dual Diaphragm Power Brake Booster Zinc Chromate finish 3 3 8" Bolt Pattern (Firewall Side) 3 3 8" Center to Center Bolt Hole (Master Cylinder Side) Uses adjustable pin Great for installs on GM A, F, X, Body Cars with Big Blocks or Engines with tall headers Notes: These boosters will work on a variety of GM, Ford, Trucks, and Passenger Cars. When ordering an universal brake booster please make sure you have the correct brackets
Overview:
Universal 8" Dual Diaphragm Power Brake Booster
- Zinc Chromate finish
- 3-3/8" Bolt Pattern (Firewall Side)
- 3-3/8" Center to Center Bolt Hole (Master Cylinder Side)
- Uses adjustable pin
- Great for installs on GM A, F, X, Body Cars with Big Blocks or Engines with tall headers
Notes:
- These boosters will work on a variety of GM, Ford, Trucks, and Passenger Cars. When ordering an universal brake booster please make sure you have the correct brackets or pedal assembly for your application.
- Will need adjustable pedal rod extension and the correct clevis for your application.
- Length from mount face to M.C. mount face is 5-1/4". Pushrod extends 4" from mount face and has 3/8"-24 threads. Mount bolts are 5/16"-20 x 7/8".
Specs:
| Part Number | PB8531 |
| Brake Booster Type | Vacuum Diaphragm |
| Brake Booster Finish | Cadmium Zinc plated |
| Mounting Pattern | 3-3/8 in Square |
| Brake Booster Diameter | 8 in Dual |
| Length | 5.5 in |
| Rod Length |
4 in |
Shipping Notes
- Free Standard Shipping on $100+ Orders to the USA.
- Except Preorder products are shipped in 48 hours.
- Delivery to the USA:
- Standard Shipping : 3-10 business days
- If time is of the essence, please consider selecting expedited delivery for faster service.
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
4.6 ★★★★★
Based on 609 reviews
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Product Reviews
★★★★★ 3
Squeaker not working!
Color: Yellow
I'll give it 3 stars because I love the design and it's sturdy and great for dogs to hold/launch. That said, the squeaker doesn't really work... I tried everything but it just doesn't make any sound. My dog wasn't really interested but when it did make a slight sound he approached it. Once it stopped he lost interest. But he's very difficult to please😆 so if you have a normal dog, he'll probably like it!
I hope the manufacturer fixes the squeaker issue because apparently many people are having the same issue, which is a shame because the product is clearly well made!
I'm on the fence about returning it just because the quality it's amazing(squeaker issue aside)!
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Reviewed in the United States on September 19, 2025
★★★★★ 4
Sturdy rubber ball. Noise maker could be improved
Color: Red
I would have given it five stars because of how much, my dog loved it in the beginning.
And shut us up holds true as a sturdy rubber ball. My only complaint is at with one of my dogs being a heavy chewer, she was able to bust the noise making part. The ball never broke open or anything. It just no longer makes noise. You can hear the piece rattling on the inside. The ball itself is still solid tho
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Reviewed in the United States on March 6, 2026
★★★★★ 1
POOR QUALITY WHILE OVER PRICED
Color: Brown
Like so many others said, the sound box in this ball is faulty. lasted ONLY for 30seconds. My dog loves the giggle ball I purchased prior so I knew she would like this as well. Well, she did, for that whole 30 seconds. Both of us were so disappointed we could not further our play. Plus this ball was so much smaller than expected for the cost. I would not have minded the cost had this ball been on the ball! Don't purchase this item. Buy the giggle ball instead if you haven't already.
UPDATE...
Ran across this message at a later date and I would like to thank the sellers at Mewlmart for their response and showing the best business practices as stated in their response below.
-----------------------
We sincerely apologize for any inconvenience regarding your order and would like to offer you a full refund for your purchase.
If you would like a full refund: please reply 'Full refund'.
We hope that you give us another chance. Thank you very much.
Best regards,
Mewlmart
-----------------------
Only thing is I wish I had seen their message earlier, as I believe the window of opportunity for a refund may no longer be applicable. But who knows, they may reach out and still honor it when they review this review. Will update if that happens as it is worth mentioning the extra mile they may take. I am sure I would just then turn around and buy another product from them, giving them another try:)
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Reviewed in the United States on January 2, 2024
★★★★★ 5
Brody loves the Owl ball
Color: Brown, Color: Brown
My dog loves this ball! He destroys every toy! He loves balls but he destroys all of them. He loves Owl ball! It’s challenging for him to pick up & loves the sound. Best toy he has! Keeps him entertained & he can’t destroy it!!
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Reviewed in the United States on March 21, 2026
★★★★★ 5
Great toy
Color: Red
Indestructible by my Boxers
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Reviewed in the United States on March 21, 2026
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