Configure your CSF 8401/8402 “No Limit” air-to-air intake manifold for nitrous, methanol, or water injection with the CSF Nitrous Jet Fitting Adaptor Plugs. Designed specifically for BMW B58/S58 applications using CSF manifolds, this kit provides a clean, reliable way to add Nitrous Express plate jet fittings without custom machining.
Based on CSF’s injector plug design, each adaptor plug features an internal 5/16-24 thread to suit Nitrous Express Plate Jet Fittings (NX PN: 16149). The kit includes six plugs, allowing injection at each runner, and can also be used in place of the primary fuel rail when port injection is not being used.
Ideal for enthusiasts planning advanced power adders or future nitrous integration, the CSF8403 kit is built to integrate neatly with CSF 8401/8402 manifolds while maintaining a factory-like appearance.
-5%
$1,357.55
$1,429.00
-5%
$550.05
$579.00
-5%
$1,728.05
$1,819.00
-5%
$996.55
$1,049.00
-5%
$759.05
$799.00
-5%
$1,101.05
$1,159.00
$132.00