Easy — 1–2 hours
Description
Part #: 307019
For switching any high current or high load device
75 Amp Relay for EFI
This product may expose you to chemicals known to the State of California to cause cancer, birth defects, or other reproductive harm.
MIA's Description
This relay features blade/screw terminal types and has 4 relay terminals. It is sold individually and does not include a wiring harness. The FAST relay is a required component when using an XFI ECU to control high-current devices like fuel pumps or nitrous solenoids from low-current outputs.
Fitment
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Specifications
| Brand | FAST |
| Part Number | F003 307019 |
Buy with Confidence
Built for enthusiasts. Every order is backed by our 30 day return window on eligible items. Unused and uninstalled products may be returned with approved RMA and no restocking fees when received in new condition. Orders placed through the MOTORMIA app with a complete build qualify for our Fitment Guarantee — free return shipping if the part doesn’t fit your exact setup. The guarantee covers fit only; installation must follow manufacturer instructions, and we recommend a qualified shop for parts marked Difficulty 4–5.
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