1981 Mercury Grand Marquis EFI Systems
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Fast®XFI 2.0® Electronic Fuel Injection KitMercury Grand Marquis With Standard Deck 1981, XFI 2.0® Electronic Fuel Injection Kit by Fast®. Make your vehicle faster and more powerful with premium-quality performance fuel system parts. Manufactured using the highest grade...Built-in wide-band O2Fully sequential or bank-to-bank capability$4,815.95 - $5,642.95
1981 Mercury Grand Marquis Models