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CSF Second Fuel Rail Kit for CSF BMW S58/B58 Air-To-Air Manifolds

CSF8404

$300.00
$300.00
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The CSF "No Limit" B58 & S58 Air-to-Air Billet Manifolds (CSF #8401 & #8402) come with one fuel rail for port injection (for 6 injector setups). For those looking to run dual port injection, CSF offers a second fuel rail kit. The CSF #8404 Fuel Rail Kit comes with all the necessary mounting hardware and features the same -8 ORB fitting as the primary rail. It can be set up as a return or returnless system.

Installation Instructions
  • For secondary top feed port injection (additional 6 injectors for a total of 12 injectors) on the CSF #8401 and #8402
  • CNC machined 6061 Billet Aluminum Made by CPC (Made in Australia)
  • Includes -8 ORB plug for returnless setup
  • Includes Mounting Hardware

FAQ

When does my order ship?

Most orders ship in 1–3 days, but some items may take longer due to demand and manufacturing delays. For urgent orders, please contact us to confirm stock before purchasing.

Are returns accepted?

Not satisfied? Return any item within 30 days. See our FAQ page for details.

Buy now pay later options available?

Yes. Pay later in installments with Affirm or PayPal Pay Later.

Do we offer price matching?

We’re happy to price match any legitimate listing from an authorized dealer, as long as the item is in stock and the price is current. We cannot match outdated or incorrect discounts based on old MSRP, since those prices are often errors the competitor cannot honor.