We know that getting oil pressure reading from a Windsor based Ford can be tricky, so we offer this handy extension fitting to make your oil pressure and temp access much more accessible! Oversized aftermarket gauge senders are too large to mount directly into the block, and Windsors only have a single oil port on the entire engine! Our extension features a ¼ inch NPT fitting on an angle to help with clearance and also has an 1/8-inch NPT port for dual access. Similar to OEM Ford Extension, measures 5 inches in total length. Approx 4.5 hex length. You can even spin in one of our mechanical Gauges BPP15633 to verify pressure right at the block!