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The JDY B58 Fuel Pump Upgrade Kit is a fully integrated solution designed to replace the factory fuel pump assembly and significantly improve flow capacity and system reliability.
This system removes the OEM in-tank filter and integrates a high-performance Walbro 450 (F90000274) or Walbro 525 (F90000285) brushed fuel pump directly in its place. Both options are available depending on your power goals.
A precisely machined CNC-billet aluminum adapter connects the OEM pump outlet and the auxiliary pump port together. All external lines, fittings, and the fuel pressure regulator are built into the assembly, joined with JDY's custom PTFE high-pressure corrugated hose and quick-connect fittings.
Compared with conventional external add-on pump designs, this compact and modular system offers easier installation, superior reliability, and cleaner packaging inside the tank.
Key Features
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Integrated Dual-Pump Design
Combines Genuine OEM and Walbro pumps into a single compact unit for maximum flow and reliability. -
CNC-Machined Billet Aluminum Housing
Precision-built for strength, corrosion resistance, and perfect fitment. -
Serviceable Stainless Steel Fuel Filter
Mounted beneath the pump cover with dedicated fittings and tools for easy maintenance. Unlike factory ¡°non-serviceable¡± filters, JDY¡¯s filter can be cleaned and reused¡ªsignificantly reducing long-term costs and ensuring consistent fuel delivery for high-performance builds. -
Upgradeable Return Port
Pre-machined return line fitting allows quick conversion to a mechanical fuel pressure regulator setup for Stage 3 or high-horsepower applications. The port is pre-sealed for plug-and-play installation until needed. -
Flexible Purchase Options
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DIY Assembly Kit ¨C Reuse your factory pump unit and assemble using JDY's provided tools and instructions.
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STG1: Walbro 450
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STG2: Walbro 525
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Pre-Assembled Unit: JDY supplies a complete OEM pump assembly ready to install directly into your vehicle.
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STG1: Walbro 450
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STG2: Walbro 525
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Complete Installation Accessories
Includes dedicated pump activation wiring harness, fittings, and required connectors for seamless installation.
Benefits
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Simplifies installation and maintenance
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Increases fuel system stability under high boost and load
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Reduces the risk of cavitation or flow restriction
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Designed for both BMW B58 and Toyota Supra (A90/A91) platforms
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Ideal for Stage 1¨CStage 3 builds and E85 conversions
Fits :
BMW 540i 2017 to 2021
BMW M240i 2023 to 2024
BMW M240ix 2022 to 2024
BMW M340i 2019 to 2024
BMW M340ix 2019 to 2024
BMW M440i 2021 to 2024
BMW M440ix 2021 to 2024
BMW X3 M40ix 2018 to 2024
BMW X4 M40ix 2018 to 2024
BMW Z4 M40i 2018 to 2024
Installation Instructions :
https://cdn.shopify.com/s/files/1/0478/7060/7520/files/JDY_S58_B58_LPFP_installation_guide.pdf?v=1775875643
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