CSF CSF Adaptor Plugs for B58/S58 Manifolds CSF8403

CSF Adaptor Plugs for B58/S58 Manifolds

Add methanol, water, or nitrous injection to your build with ease. This premium 6-plug kit features an internal 5/16-24 thread, turning your CSF B58 or S58 manifold runners into custom injection ports.
CSF CSF
T#: 56001930 | Part#: CSF8403
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CSF CSF Adaptor Plugs for B58/S58 Manifolds CSF8403
CSF Adaptor Plugs for B58/S58 Manifolds
$75.00

This track tested hardware kit allows you to feed nitrous, water, or methanol directly into the individual cylinder runners of your CSF billet manifold, utilizing a highly compact, integrated design. Machined from billet aluminum to withstand extreme boost pressures, each plug features fine internal threads designed to accommodate low profile plate jet fittings. By threading the jet fittings directly into the runner bungs, you bypass traditional, space-consuming nozzles altogether. It is a clever, motorsport grade upgrade that delivers direct port precision while preserving the clean, functional aesthetic that every high end BMW build deserves. 

 Features

  • Engineered specifically for high-boost BMW B58 and S58 race engines

  • Threaded internally to run compact plate jet fittings instead of bulky nozzles

  • Ensures direct-port delivery of nitrous, water, or methanol injection

  • Crafted from premium CNC-machined billet aluminum for maximum strength

  • Anodized in deep black to protect against harsh chemicals and corrosion

Specifications

  • Brand: CSF

  • SKU: 8403

  • Internal Thread Size: 5/16-24

  • Fitting Compatibility: Nitrous Express Plate Jet Fittings (NX PN: 16149) or equivalent 5/16-24

  • Supported Manifolds: CSF B58 and S58 Manifold Injector Bungs

  • Engine Fitment: S58 (G80 M3, G82 M4, F97 X3M, G87 M2) and B58 (F-Series / G-Series BMW & A90/A91 Supra)

  • Package Includes: 6 Billet Plugs and 6 O-Rings

  • Finish: Black Anodized


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Cross Reference
  • CSF #8403
  • #8403
  • 8403

Product Q&A

Lifetime Replacement

This product is not eligible for Lifetime Replacement
MAKE MODEL SUBMODEL ENGINE Special Fitment Notes
BMW All All B58 3.0L Use vehicle selector to confirm fitment
BMW All All S58 3.0L Use vehicle selector to confirm fitment
*The above product applications have been written by Turner Motorsport. All warranties, product application, fitment, and performance are the responsibility of Turner Motorsport. For additional information see the terms of use.