![Spool Stage 3 Low Pressure Fuel Pump - DIY Kit [FXX Gen 1 B58]](http://spoolperformance.com/cdn/shop/files/diy_kit.jpg?v=1733770195 "Spool Stage 3 Low Pressure Fuel Pump - DIY Kit [FXX Gen 1 B58]")
![Spool Stage 3 Low Pressure Fuel Pump - DIY Kit [FXX Gen 1 B58]](http://spoolperformance.com/cdn/shop/files/diy_kit3.jpg?v=1733775698)
![Spool Stage 3 Low Pressure Fuel Pump - DIY Kit [FXX Gen 1 B58]](http://spoolperformance.com/cdn/shop/files/diy_kit2.jpg?v=1733775698)
![Spool Stage 3 Low Pressure Fuel Pump - DIY Kit [FXX Gen 1 B58]](http://spoolperformance.com/cdn/shop/files/mercedes_harness.jpg?v=1768325344)
Spool Stage 3 Low Pressure Fuel Pump - DIY Kit [FXX Gen 1 B58]
Spool Performance is excited to introduce our B58 DIY Stage 3 Kit, designed for enthusiasts seeking a cost-effective solution to fueling challenges. This DIY kit offers similar flow rates as our plug-and-play option but at a significantly lower price point. It includes everything you need to add a secondary boost-activated low-pressure pump, resolving any low-side fueling capacity issues. With straightforward assembly instructions provided, this kit is simple to install.
If Hobbs Switch Harness option selected:
![B58 Stainless Steel Downpipe Upgrade 4.5" [Race Downpipes]](http://spoolperformance.com/cdn/shop/files/4.5_dp_400x400_crop_center.png?v=1764044367)
-58%
$168.90
$399.00
$289.00
![Spool Charge Pipe Upgrade Kit | [B58 Gen 1 & B58 Gen 2]](http://spoolperformance.com/cdn/shop/files/chargepipesforb58_400x400_crop_center.png?v=1738892956)
$149.00
![Spool VR30DTT Full Downpipes Upgrade [Race Downpipes] | Infiniti Q50 Q60 RZ34 [VR30]](http://spoolperformance.com/cdn/shop/files/vr30_full_400x400_crop_center.png?v=1764044344)
-59%
$349.00
$849.00
![Spool 3 Inch VR30DTT Lower Downpipes Upgrade [Race Downpipes] | Infiniti Q50 Q60 RZ34 [VR30]](http://spoolperformance.com/cdn/shop/files/vr302_400x400_crop_center.png?v=1768975099)
![Spool 3 Inch VR30DTT Lower Downpipes Upgrade [Race Downpipes] | Infiniti Q50 Q60 RZ34 [VR30]](http://spoolperformance.com/cdn/shop/files/vr30_400x400_crop_center.png?v=1768975099)
-56%
$199.00
$449.00
$3,999.00
$849.00
![Wireless Ethanol Analyzer Kit [S63 F90 M5/ F91/F92/F93 M8]](http://spoolperformance.com/cdn/shop/files/f90_400x400_crop_center.png?v=1743288428)
![Wireless Ethanol Analyzer Kit [S63 F90 M5/ F91/F92/F93 M8]](http://spoolperformance.com/cdn/shop/files/ethapp2-1014x912_1f816eb1-6273-4d34-aa03-9008ae473fb8_400x400_crop_center.jpg?v=1743288428)
$469.00
$132.00