Fuel Injector Clinic 1440cc High Impedance Fuel Injector Set for BMW S58 M2, M3 & M4 (IS833-1440H)
Step up the fueling performance of your BMW S58-powered build with the Fuel Injector Clinic IS833-1440H 1440cc High Impedance Fuel Injector Set. Designed specifically for S58 applications utilizing an aftermarket intake manifold or port injection kit, this six-injector package delivers the fuel volume required for demanding street and race combinations while maintaining exceptional idle quality and drivability. Positioned between Fuel Injector Clinic's 1200cc and 1650cc offerings, the 1440cc injector is an ideal choice for high-horsepower builds running gasoline, E85, or aggressive race fuels.
Built with advanced high impedance ball and seat injector technology, the IS833-1440H provides outstanding linearity and superior short pulse width repeatability for accurate fuel delivery throughout the entire RPM range. This injector set is a plug and play fit to the OEM harness, simplifying installation on compatible port injection systems. Every injector is individually flow matched using Fuel Injector Clinic's exclusive Data Match Technology and includes a serial-number-specific calibration sheet with detailed flow and latency information, allowing tuners to achieve exceptional calibration accuracy.
Quick Specs
- Part Number: IS833-1440H
- Injector Size: 1440cc/min
- Injector Quantity: 6
- High impedance (saturated) ball and seat injectors
- Designed for aftermarket intake manifold or port injection kit applications
- Plug and play fit to the OEM wiring harness
- Flow matched using Fuel Injector Clinic Data Match Technology
- Individually serial numbered with calibration data sheet included
- Flow tested at 43.5 PSI (3 Bar) using CF-16B calibration fluid at 90 degrees Fahrenheit
- Compatible with pump gasoline, E85, Q16, VP Import, FTW, MTBE oxygenated race fuels, and other performance fuels
- Stainless alloy valve construction for outstanding durability and fuel compatibility
- Includes all required O-rings for the intended application
- Lifetime warranty against manufacturing defects
Features
- Designed specifically for BMW S58 engines using aftermarket port injection systems
- 1440cc flow rate bridges the gap between Fuel Injector Clinic's 1200cc and 1650cc injectors
- Supports high horsepower gasoline and E85 combinations with excellent drivability
- Plug and play connection to the factory OEM harness for simplified installation
- Excellent injector linearity for precise fueling across the entire operating range
- Superior short pulse width repeatability improves tuning accuracy and idle quality
- Fuel Injector Clinic Data Match Technology provides industry-leading injector matching
- Each injector is individually serial numbered and supplied with detailed calibration data
- Compatible with virtually all commonly used race fuels, including MTBE oxygenated fuels
- Backed by Fuel Injector Clinic's lifetime warranty against manufacturing defects
Fitment
- 2021 BMW M3 (G80)
- 2022 BMW M3 (G80)
- 2023 BMW M3 (G80)
- 2024 BMW M3 (G80)
- 2025 BMW M3 (G80)
- 2026 BMW M3 (G80)
- 2021 BMW M4 Coupe (G82)
- 2022 BMW M4 Coupe (G82)
- 2023 BMW M4 Coupe (G82)
- 2024 BMW M4 Coupe (G82)
- 2025 BMW M4 Coupe (G82)
- 2026 BMW M4 Coupe (G82)
- 2021 BMW M4 Convertible (G83)
- 2022 BMW M4 Convertible (G83)
- 2023 BMW M4 Convertible (G83)
- 2024 BMW M4 Convertible (G83)
- 2025 BMW M4 Convertible (G83)
- 2026 BMW M4 Convertible (G83)
- 2023 BMW M2 (G87)
- 2024 BMW M2 (G87)
- 2025 BMW M2 (G87)
- 2026 BMW M2 (G87)
FAQs
Can these injectors be used with E85 and race fuels?
Yes. The IS833-1440H features a stainless alloy valve construction and is compatible with pump gasoline, E85, Q16, VP Import, FTW, MTBE oxygenated race fuels, and other commonly used performance fuels.
Are these injectors intended to replace the factory direct injection injectors?
No. The IS833-1440H is designed for BMW S58 engines equipped with an aftermarket intake manifold or port injection kit. It is intended for supplemental port injection and is not a replacement for the factory direct injection system.
Why Buy From Beefcake Racing?
Beefcake Racing proudly offers genuine Fuel Injector Clinic products backed by expert technical support, competitive pricing, and fast shipping. Whether you're building a high-performance street car or a dedicated race vehicle, our experienced team can help you choose the ideal fueling solution for your BMW S58 combination.
Need assistance selecting the right injectors or port injection components? Contact our team today.
Email: sales@beefcakeracing.com
Phone: 1-855-827-7223
CA Residents: WARNING: Cancer and Reproductive Harm www.P65Warnings.ca.gov

