Fuel Injector Clinic 525cc High Impedance Fuel Injector Set (IS803-0525H) - 1986-1991 BMW E30 M3
Upgrade the fuel system in your legendary BMW E30 M3 with the Fuel Injector Clinic IS803-0525H Fuel Injector Set. Designed specifically for the factory application, this matched set of four 525cc saturated (high impedance) ball and seat injectors delivers outstanding fuel control for naturally aspirated performance builds as well as forced induction combinations that demand greater fueling capacity. Exceptional linearity and industry-leading short pulse width control provide smooth idle quality, crisp throttle response, and excellent drivability while giving tuners the consistency needed for accurate calibration.
Each injector is individually tested, flow matched, and serial numbered using Fuel Injector Clinic's proprietary Data Match Technology. Every set includes a detailed Data Match Sheet containing individual flow and latency values for precise tuning. The injectors are flow tested at 43.5 PSI (3 Bar) using CF-16B calibration fluid at 90 degrees Fahrenheit, include all required O-rings for the factory application, and are backed by Fuel Injector Clinic's Lifetime Warranty against defects in original manufacture. PGTUSC4 injector pigtails are included, while optional PADPUtoJ4 Plug and Play adapters are available for installers who prefer not to modify the factory wiring harness.
Quick Specs
- Manufacturer: Fuel Injector Clinic
- Part Number: IS803-0525H
- Injector Size: 525cc
- Quantity: Four injectors
- Injector Type: Saturated / High Impedance Ball and Seat
- Vehicle Application: BMW E30 M3
- Included: PGTUSC4 injector pigtails
- Optional Adapter: PADPUtoJ4 Plug and Play adapters
- Flow Rating: Rated at 43.5 PSI (3 Bar)
- Flow Test Fluid: CF-16B calibration fluid
- Flow Test Temperature: 90 degrees Fahrenheit
- Matching Method: Fuel Injector Clinic Data Match Technology
- Installation: Includes all required O-rings for the factory application
- Warranty: Lifetime Warranty against defects in original manufacture
Features
- Complete set of four 525cc saturated (high impedance) fuel injectors.
- Designed for the 1986-1991 BMW E30 M3.
- Brand-new injectors with no remanufactured or core exchange components.
- High impedance ball and seat injector design.
- Outstanding linearity throughout the operating range.
- Superior short pulse width repeatability for simplified tuning.
- Matched using Fuel Injector Clinic's proprietary Data Match Technology.
- Each injector is individually serial numbered.
- Includes Data Match Sheet with individual flow and latency values.
- Flow tested at 43.5 PSI (3 Bar).
- Tested at 90 degrees Fahrenheit using CF-16B calibration fluid.
- Excellent idle quality, drivability, and throttle response.
- Includes PGTUSC4 injector pigtails for wiring conversion.
- Optional PADPUtoJ4 Plug and Play adapters available for no-cut installation.
- Includes all required O-rings for the factory application.
- Backed by Fuel Injector Clinic's Lifetime Warranty.
Fitment
- 1986 BMW E30 M3
- 1987 BMW E30 M3
- 1988 BMW E30 M3
- 1989 BMW E30 M3
- 1990 BMW E30 M3
- 1991 BMW E30 M3
FAQs
Do these injectors require modifying the factory wiring?
Yes. This injector set includes PGTUSC4 injector pigtails that can be soldered to the factory wiring harness. If you prefer not to cut or solder the harness, optional PADPUtoJ4 Plug and Play adapters are available separately.
Why does Fuel Injector Clinic require a plug conversion?
Fuel Injector Clinic uses brand-new injectors rather than remanufactured or core-based injectors for its performance applications. The included pigtails or optional adapters allow installation while maintaining the reliability of brand-new injectors.
Why Buy from Beefcake Racing?
Beefcake Racing proudly offers genuine Fuel Injector Clinic products backed by knowledgeable technical support and outstanding customer service. Whether you're restoring a classic E30 M3 or building a serious performance car, we're here to help you select the right fuel system components. Contact us at sales@beefcakeracing.com or call 1-855-827-7223 for expert assistance.
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