SKU: 52297969894

JB4 Fuel Pressure Upgrade Kit for 2020+ BMW B58, S58, B48, Supra

$157.50 $175.00
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Ships within 48 hours · Estimated delivery Aug 23 - Aug 28

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Description

JB4 Fuel Pressure Upgrade Kit for 2020+ BMW B58, S58, B48, SupraFinally an upgrade kit that adds a high fuel pressure connection to the JB4 for B58 B48 Gen2 and S58 platforms allowing direct control of fuel pressure and fuel trims. Most useful for manual transmission vehicles or those running heavy E85 mixtures on a locked ECU. It's easy to install and includes a replacement JB4 board and a fuel pressure connector harness that attaches to your existing JB4 harness. Note this kit is not compatible with Gen1 B58

Finally an upgrade kit that adds a high fuel pressure connection to the JB4 for B58/B48 Gen2 and S58 platforms allowing direct control of fuel pressure and fuel trims. Most useful for manual transmission vehicles or those running heavy E85 mixtures on a locked ECU.

It's easy to install and includes a replacement JB4 board and a fuel pressure connector harness that attaches to your existing JB4 harness.

Note this kit is not compatible with Gen1 B58 motors.

Customers who purchased their JB4 new from Palenon Performance can receive a $75 core refund for their original JB4 board. To take advantage of this core refund ship your original board along with copies of the original JB4 purchase receipt and your JB4 upgrade kit order number to the address on our website. Cores must be received 45 days after upgrade kit receipt to qualify.

For installation directions and additional information click here.

Vehicle Fitment

BMW 2 Series
• 2022+ B58 G42 BMW M240i, M240i xDrive, and M240xi
• 2023+ S58 G87 BMW M2
• 2022+ G42 B48 BMW 220i, 230i
• 2020-2021 F22 F23 B48 BMW 230i including xDrive
• 2020-2021 F22 F23 B48 BMW 225i including xDrive

BMW 3 Series
• 2019+ B58 G20 G21 BMW M340i, M340i xDrive, and M340xi
• 2021+ S58 G80 BMW M3
• 2021+ S58 G80 BMW M3 Competition
• 2020+ G20 G21 B46 B48 BMW 318i, 320i, 320Li, 320e, 330i, 330e, 320Li including xDrive

BMW 4 Series
• 2021+ B58 G22 G23 G26 BMW M440i, M440i xDrive, and M440xi including Gran Coupe
• 2021+ S58 G82 BMW M4
• 2021+ S58 G82 BMW M4 Competition
• 2022+ S58 G83 BMW M4 Convertible
• 2021+ G22 G23 G26 B48 BMW 420i, 430i including Gran Coupe and xDrive
• 2020 F32 F33 F36 B48 BMW 430i including Gran Coupe and xDrive
• 2020 F32 F33 F36 B48 BMW 425i including xDrive

Toyota Supra
• 2020-2026 Toyota GR Supra Mk5 B58 3.0L 6 cyl.
• 2020-2026 Toyota GR Supra Mk5 B48 2.0L 4 cyl.

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: 52297969894

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4.8 ★★★★★
Based on 17 reviews
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Verified Purchase
MADDY
Belleville, US
★★★★★ 5
Best fun indestructible toy
Color: Crinkle Duck (Yellow), Size: Large
Truly indestructible no matter how much our oittie tries. She has owned it for three months works at destroying every day with no success. She carries it everywhere. Best purchase for chewer, more fun than the popular rubber heavy duty toy. Do not hesitate your pup will thank you for this fun distraction.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on May 30, 2026
P
Verified Purchase
peter contino
Phoenix, US
★★★★★ 5
My dog loves this toy!
Color: Bunny (Gray), Size: Large, Color: Bunny (Gray), Size: Large
High quality, big toy, perfect for a medium to large size dog. After a few months of serious chewing I had to buy another one, but well worth the money! Rocky loves it.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 11, 2026
D
Verified Purchase
Denise Boyd
Birmingham, US
★★★★★ 4
Great toy but if your dog is an aggressive chewer, please think twice.
Color: Crinkle Chicken (Brown), Size: Large
I received this on May 23rd and on June 8th, after playing with this thing every day, our recently acquired 36 lb dog finally ripped it open and got out all the plastic and the squeaky part. Lily Belle will miss you, chicken. Lily loooooved this toy! She'd toss it in the air, chew on it, pull it with her teeth etc. but as much as she loved it, we won't replace it. It's just not durable enough for her. If your dog is an aggressive chewer, you might want to try a different toy. I hate that this lasted just a smidge over two weeks because Lily seemed to truly enjoy this toy. RIP, squeaky chicken!
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on June 9, 2026
B
BR
Phoenix, US
★★★★★ 5
Durable Toy for Active Dogs
This ball is strong enough to handle daily play while keeping dogs entertained. It provides stimulation that helps reduce boredom and restlessness. The material feels tough but safe for dogs, and the interactive design makes it more exciting than a regular ball. It’s also lightweight enough for indoor or outdoor use. A smart choice for pet owners looking to keep dogs occupied.
WAS THIS REVIEW HELPFUL?YesReportShare
Reviewed in the United States on November 13, 2025
H
Hope
Louisville, US
★★★★★ 5
Bright, easy to clean toy
This ball is a fun little addition for my big dog. The bright blue color really helps, it is easy to spot under the sofa or behind furniture. The outer shell feels durable, not soft rubber but springy enough to handle his chewing without marks. When switched on, it rolls around by itself and makes my dog chase it all over the living room, which is a good way to burn his energy on rainy days. The internal switch is hidden, which I like because my dog cannot open it with his teeth. It is simple to turn on and off, and so far, the movement works as described. The texture also resists hair sticking, and I can rinse it under water, and it looks clean again in seconds. For the price, it serves its purpose and gives my dog a short burst of excitement each day.
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Reviewed in the United States on October 10, 2025

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