Description
Replace a damaged lower shaft or keep a spare ready for your Fisher Impulse AQ with the Fisher 30" Lower Tube with Hardware.
Designed specifically for the Fisher Impulse AQ platform, this lower tube measures 30 inches from top to bottom and includes the essential hardware needed to secure the search coil in place.
It is a practical replacement component for beach and water detectorists who want to restore the shaft assembly or keep an extra lower tube ready for coil changes and field use.
Key Features
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Designed for Fisher Impulse AQ – Specifically compatible with the Fisher Impulse AQ Limited.
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30" Lower Tube – Measures 30 inches from top to bottom.
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Coil Hardware Included – Includes the essential hardware needed to secure the search coil.
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Replacement Shaft Component – Ideal for replacing a damaged, worn, or missing lower tube.
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Useful as a Spare – Keep an additional lower tube ready for field repairs or alternate coil setups.
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Built for the Impulse AQ Platform – Intended for the specific shaft and coil configuration of the Fisher Impulse AQ.
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Genuine Fisher Accessory – Sold as a Fisher replacement part through an authorized specialist dealer.
Designed for the Fisher Impulse AQ
This lower tube is specifically compatible with:
Fisher Impulse AQ Limited Metal Detector
The Impulse AQ is a pulse-induction detector built for beach, surf, wet-sand, and shallow-water hunting. First Texas identifies the platform as using a waterproof 12.5" mono search coil and a waterproof housing rated to 3 feet.
Because the Impulse AQ uses a specialized shaft and coil setup, this lower tube should not be treated as a universal Fisher replacement stem.
30" Lower Tube
Serious Detecting specifies the tube length as:
30 inches from top to bottom.
That makes it distinctly different from the more common 19" and 26" lower stems used across other Fisher, Teknetics, and Bounty Hunter detector families.
Coil Hardware Included
The product includes the essential hardware required to secure the search coil to the lower tube.
This is useful when:
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Replacing a damaged lower shaft
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Rebuilding an Impulse AQ coil assembly
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Keeping spare mounting hardware available
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Setting up a second coil and lower-tube combination
The listing does not specify every individual hardware component by name, so I would not invent bolt, washer, or nut counts beyond saying the essential hardware is included.
Useful as a Replacement or Spare
A lower tube can become damaged through repeated use, transport, or heavy beach and surf hunting.
This replacement gives Impulse AQ owners a straightforward way to restore the shaft assembly without replacing the complete detector.
It can also serve as a spare for detectorists who regularly hunt demanding environments and want backup shaft hardware available.
Helpful for Alternate Coil Setups
First Texas currently lists both the standard Impulse AQ platform and an optional 8" search coil with tube within the Impulse AQ accessory family.
Keeping an additional lower tube available can make coil configuration changes easier, depending on the exact coil and hardware setup being used.
Technical Specifications
| Specification |
Details |
| Brand |
Fisher |
| Product Type |
Lower Tube / Shaft Component |
| Compatible Metal Detector |
Fisher Impulse AQ Limited |
| Length |
30" |
| Position |
Lower Detector Shaft |
| Coil Mounting Hardware |
Included |
| Primary Use |
Replacement / Spare Lower Tube |
| Search Coil Included |
No |
| Metal Detector Included |
No |
What's Included
LOWER TUBE AND HARDWARE ONLY.
Fisher Impulse AQ metal detector, search coil, battery, headphones, and other accessories are not included.
Why Choose the Fisher Impulse AQ Lower Tube?
The Fisher Impulse AQ is a specialized beach and shallow-water detector, so using the correct shaft components matters.
This 30" lower tube is designed specifically for the Impulse AQ and includes the essential hardware needed to secure the search coil.
Whether you're replacing a damaged tube or keeping a spare ready for field use, it provides a direct, model-specific solution for maintaining your Impulse AQ setup.
