Spool Performance proudly presents the pinnacle of injector technology for the S58 platform — the IFX 350. These injectors are not only the top-performing DI injectors available for the S58 but they've also been engineered...
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Vendor:Spool Performance

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Spool Performance proudly presents the pinnacle of injector technology for the S58 platform — the IFX 350. These injectors are not only the top-performing DI injectors available for the S58 but they've also been engineered with precision to maintain the integrity of your engine's idle and low-load behaviors. They're the ideal choice for enthusiasts who are serious about power and OEM-like engine reliability maintainging full factory control through DI.

These high-spec injectors provide a substantial 30% increase in flow rate, allowing for significant performance upgrades without the need for supplemental fuel systems. The IFX 350's advanced design allows for consistent fuel delivery at pressures up to 390 bar. It translates into superior fuel atomization and efficient combustion, crucial for maintaining smooth operations at high power outputs. This level of performance is particularly beneficial for those looking to explore the limits of their engine's power, supporting the journey to four-digit horsepower figures in conjunction with our FX350 high-pressure pump.

Each injector is a product of exhaustive development and testing, ensuring not only compatibility with the latest Gen2 B58 tuning platforms but also maintaining a factory-like idle and low-load behavior. For drivers of G80, G82, G87, M3, M4, X3M, and M2 models, this means a direct fit and enhanced performance without compromise.

Key Specifications:

  • Enhanced Flow: Achieves a 30% higher flow rate over stock injectors.
  • High-Pressure Operation: Functions effectively at pressures up to 390 bar.

To fully leverage the capabilities of these injectors, tuning modifications will be necessary. Spool Performance stands by to support these adjustments, offering comprehensive calibration support for tuners.

Every set of IFX 350 injectors is protected by our 1-year warranty, assuring you of their reliability from the moment of purchase.

Customer Loyalty Offer: We value our returning customers. If you've previously purchased an FX350 high-pressure pump from us, please reach out with your order number to receive a special one-time 15% discount code for the IFX 350 injectors.

Upgrade your vehicle with the assurance that it has been equipped with the finest in fuel injection technology.


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Return or exchange any item with original purchase receipt within 30 days as NEW requires that item must be in original condition and packaging, unopened and uninstalled, including all original materials supplied with the item. Returns that do not meet these criteria will be denied. Items returned for warranty may be exchanged or refunded or credited at our discretion. Credit will be issued to the same card used for purchase.

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Non-Returnable Items

The list below provides a high-level list of merchandise that is classified as non-returnable per our Return Policy.Some parts may be denied return because they share the same categorization as their electrical counterparts denial and process the return. This list represents most but not necessarily all of the non-returnable parts; - Including but not limited to MHD & BM3 Licenses , Custom Software Calibration files , SALE items. Also please review the manufacturer return policy before your purchase.

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