Description
One 12 inch Double-D coil, and it fits nearly the whole Fisher lineup, from the F75 to the Gold Bug. This is the deepest standard Fisher coil, and it is a single physical part First Texas catalogs across the F75, F70 and the F11/F19/F22/F44 and Gold Bug families, so it turns a whole shelf of detectors into deep-seekers.
At a glance: This is the genuine Fisher 12 in / 30 cm Double-D search coil, the deepest standard coil in the line. First Texas catalogs it as one physical part across the F75, F70, F19, F11, F22, F44 and Gold Bug, all on the screw-in connector, so a single coil upgrades depth across nearly the whole Fisher range.
Genuine First Texas, in stock
This is the genuine First Texas Fisher part 12COILDD-F75, not an aftermarket copy. It is the 12 in / 30 cm Double-D search coil built for the machines listed below, and we stock it. Some sellers list only third-party coils for this platform or price the factory part well above ours; we carry the real coil at the manufacturer's advertised price. New to coils? Our Search Coil Buying Guide walks through size and Double-D versus concentric before you choose.
Which detectors does it fit?
First Texas sells this exact coil under two part numbers that share one barcode, so it is one physical part spanning the F75 platform and the F11/F19/F22/F44/Gold Bug family. This coil is compatible with: Fisher F75, Fisher F75+, Fisher F75 LTD, Fisher F70, Fisher F19, Fisher F11, Fisher F22, Fisher F44, Fisher Gold Bug.
That shared-part fact is why one 12 inch Double-D covers the Fisher F75, F75+, F75 LTD and F70 as well as the F11, F19, F22, F44 and Gold Bug, every one on the screw-in connector. Teknetics T2 fit is not claimed pending First Texas confirmation.
Why the 12 in Double-D coil
Coil size is depth, and at 12 inches this is the deepest standard Double-D Fisher makes. What sets it apart is reach across the catalog: First Texas lists the F75 part number and the F11/F19/F22/F44/Gold Bug part number under the same barcode, meaning it is one coil, not two, so it drops onto nearly the entire Fisher lineup that uses the screw-in connector. The Double-D winding rejects ground mineralization and runs quiet on hot soil while covering the most ground per sweep. It is the coil for the deep coin, the plow-zone relic and the wide open field. In heavy trash or tight spaces, switch to the 5 or 6.5 inch, where a smaller coil separates better.
Specifications
| Part number | 12COILDD-F75 |
| Type | Double-D search coil, 12 in / 30 cm |
| Connector | First Texas screw-in (twist-lock) connector |
| Compatibility | Fisher F75, Fisher F75+, Fisher F75 LTD, Fisher F70, Fisher F19, Fisher F11, Fisher F22, Fisher F44, Fisher Gold Bug |
| Weight | Not published by First Texas. We list only verified figures |
Frequently asked questions
Will this coil fit my detector? It fits the Fisher F75, F75+, F75 LTD, F70, F19, F11, F22, F44 and Gold Bug, which all share the First Texas screw-in connector; First Texas catalogs it as one part across those families.
How is this size different from the others? The 12 inch Double-D is the deepest standard coil and the widest coverage. Use the 5 or 6.5 inch for trash and tight spots, the 10 inch for lighter coverage, and the 11 inch when you want depth in a slightly lighter coil.
Double-D or concentric, does it matter? This is a Double-D coil. Overlapping D-shaped windings reject ground mineralization and run smoother than a concentric coil in bad soil, which matters most on a large deep coil like this one.
Is it waterproof? First Texas search coils are submersible; keep the control housing dry. For a verified depth rating on your exact machine, call us and we will confirm before you hunt water.
History Seekers is a small American business and an authorized First Texas dealer (Fisher, Teknetics and Bounty Hunter are one El Paso company). Everyone here detects, top down, for coins, relics, jewelry and gold, and prior field experience is a hiring requirement, not a coincidence. The person who answers your fitment question may be the one who packs the coil and drives it to the UPS drop. The story is more important than the artifact.