![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:
$5,999.00
$3,999.00
$399.00
![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
$5,749.00
$5,749.00
-25%
$149.00
$199.00
![Spool FX-400 Upgraded High Pressure Pump [Gen 1 B58]](http://spoolperformance.com/cdn/shop/files/image1_400x400_crop_center.jpg?v=1701992401)
![Spool FX-400 Upgraded High Pressure Pump [Gen 1 B58]](http://spoolperformance.com/cdn/shop/files/SpoolFX200-3_0830aef5-4467-484f-ac58-3769e7fe7390_400x400_crop_center.jpg?v=1701992401)
$2,648.00
$132.00