4Piston Racing Ported B-series Oil Pump
SKU: 56243031138

4Piston Racing Ported B-series Oil Pump

Sale price$247.05 Regular price$274.50
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Shipping Estimate
USA
  • USA
  • CAN

Ships within 48 hours · Estimated delivery Jul 6 - Jul 11

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For Your Every Summer RSVP, with Code: SUMMER15

Description

4Piston Racing Ported B-series Oil PumpThe stock oil pump is a great piece for up to 9,000 rpm in drag racing and 8,000 rpm in endurance racing. Past that, there can be cavitation issues and oil pressure drops as temperatures rise. 4Piston Racing's ported pump increases flow by 25% and will allow continuous use above 9,000 rpm. The pump has been tested as high as 12,000 rpm with great success. 4Piston starts with a brand new OEM oil pump from Honda, disassemble, port and smooth oil

The stock oil pump is a great piece for up to 9,000 rpm in drag racing and 8,000 rpm in endurance racing. Past that, there can be cavitation issues and oil pressure drops as temperatures rise. 4Piston Racing's ported pump increases flow by 25% and will allow continuous use above 9,000 rpm. The pump has been tested as high as 12,000 rpm with great success. 4Piston starts with a brand new OEM oil pump from Honda, disassemble, port and smooth oil passages to increase flow. The pumps are then cleaned, oiled, reassembled and repackaged. This part is cheap insurance to protect your multi-thousand dollar investment.

Fits all B-Series Engines!

Add a 4P Rooster Ring to help with the install! Simply slide the Rooster Ring onto the crank snout, then slide the oil pump over it into place. It perfectly centers the pump, expands the lip seal and keeps it in the proper orientation helping it slide perfectly onto the crank. No more fighting it. Once you use it, you'll praise how this simple tool can make such a big difference.

Shipping Notes
  • Free Standard Shipping on $100+ Orders to the USA.
  • Except Preorder products are shipped in 48 hours.
  • Delivery to the USA:
  1. 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
SKU: 56243031138

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Claire
Grantham, US
★★★★★ 5
Great diapers
Size: 4T-5T, Unit Count: 17
These pull-ups are great. They’re very soft and have a cute little Minnie mouse print on them. They’re great for the price. Luckily my daughter only needs them for bedtime, but they’re great because she can put them on and pull them up by herself. The brand is great, I’ve never had an issue with this brand before.
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Reviewed in the United States on April 14, 2026
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Verified Purchase
Travis
Lake Worth, US
★★★★★ 5
Awesome. Kid loves them
Size: 4T-5T, Unit Count: 99
Great. i love how i don't have to rip them. there is Velcro on the sides to pull off. and they fit great
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on April 22, 2026
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Verified Purchase
Paige
Port Orchard, US
★★★★★ 5
Our Go-To Pull-Ups for Potty Training
Size: 2T-3T, Unit Count: 124
We’ve tried a few different brands during potty training, and we always come back to Pull-Ups. They fit my daughter really well, are easy for her to pull up and down on her own, and hold up great overnight without leaking. The sides tear easily for quick changes, which is super helpful when you’re out and about. The designs are also cute and helped make potty training a little more exciting for my toddler. Definitely a staple in our house during this stage!
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Reviewed in the United States on May 12, 2026
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Verified Purchase
So pretty
Massapequa, US
★★★★★ 5
Luvs pulls up are the best
Size: 5T-6T, Unit Count: 48
I love this brand. It’s very secure, and the adjustable band makes it easy to tighten without taking off my child’s pants. It doesn’t leave an odor, the texture is smooth, and my child is always comfortable. The price matches the quality, and there’s no leakage or spillover. Overall, it’s very durable. Make sure to have it correctly fastened because the Velcro can leave scratches on child skin.
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Reviewed in the United States on December 9, 2025
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L
Belleville, US
★★★★★ 4
Toddler approved
Size: 4T-5T, Unit Count: 99
Fits true to size and easy to pull up and down by my toddler. Very absorbent - perhaps a little too absorbent as it's taking my daughter forever to be potty trained and she's content in her soiled training pants... Great quality overall.
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Reviewed in the United States on August 29, 2025

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