Instruction Sheets for Part Number HLY-557-101
Charts & Guides for Part Number HLY-557-101
Part Number: HLY-557-101
Holley Water/Methanol Injection System Installation Kits
Injection System Reservoirs, Holley EFI, 1/2 Gallon, Plastic, 6 in. Wide x 4 in. Deep x 5 in. Tall, with Float, Filter, Tubing, Relay, Fittings, Kit
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Estimated Ship Date: Oct 27, 2026 Would you rather pick it up?
Overview
Holley Water/Methanol Injection System Installation Kits
Holley water/methanol injection system installation kits are designed for use with Holley HP and Dominator EFI systems. They are programmed for 100 percent water and up to a 50/50 percent mixture of water and methanol--never use more than 50 percent methanol in the mixture, or damage to components may result. These are installation kits only; a pump and solenoid(s) are required, as well.
Kits include:
* Reservoir
* Low-level float
* Filter
* Tubing
* Relay
* Relay wiring fuse
* Warning LED
* Fittings
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Instructions & Calculators
Instruction Sheets for Part Number HLY-557-101
Charts & Guides for Part Number HLY-557-101
Some parts are not legal for use in California or other states with similar laws / regulations
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