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The 403 is an Oldsmobile small block engine (1977-1979) and this plate is designed specifically for it
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Firewall — center it up and it anchors the entire engine compartment
Displacement: 403 cubic inches (6
Mercury: Cougar
Fuel Pump Block Off Plate fits Buick 322 Nailhead Engines Billet 6061 CNC USA 2021 Toyota GR Supra The 403 is an OldsmobileFuel Pump Block Off Plate fits Buick 322 Nailhead Engines CNC From 6061 Billet Aluminum Made in the USA Our fuel pump block off plate is a must have to cover the mounting hole and prevent oil leaks in your engine when upgrading your fuel system from the stock mechanical fuel pump to a more reliable electric fuel pump. This high quality block off plate is a perfect fit for your Buick 322 Nailhead engine. These are precisely CNC machined from 6061 T6
US$ 175.00
US$ 19.99