XP MI-6 and MI-4 Pinpointer Top Cap with Red Membrane

This top cap fits both the XP MI-6 and MI-4 pinpointer models. The cap is designed to securely close the battery compartment on both pinpointer models, simplifying replacement parts inventory for detectorists who own multiple XP pinpointers. If you own an MI-6 or MI-4, this cap will restore your pinpointer's battery compartment seal and keep dirt and moisture out during your hunts.

The red membrane is a filter component integrated into the top cap design. This membrane works to block dirt and moisture from entering the pinpointer's battery compartment while the cap is installed. The red color identifies this current cap design from XP. When properly installed, the membrane helps maintain the battery compartment's protection against environmental contaminants during field use.

This cap is designed for the XP MI-6 and MI-4 pinpointers. Check your pinpointer's model designation on the body or packaging before ordering to confirm compatibility. If you're unsure which XP pinpointer you own, compare your unit to the models listed in our pinpointer comparison guide to verify you have an MI-6 or MI-4 model.

Replace your pinpointer cap if you notice cracks in the plastic body, a loose fit that allows the cap to unscrew during use, or visible damage to the red membrane filter. A damaged cap can allow moisture and debris into the battery compartment, leading to corrosion on the battery contacts and intermittent power failures. If your pinpointer powers off unexpectedly or shows corrosion around the battery terminals, inspect the cap for damage. Keeping a spare cap in your dig kit prevents mid-hunt equipment failures when the original cap fails.

This replacement cap is designed to restore the battery compartment's protection against dirt and moisture when installed correctly. The cap creates a seal at the battery compartment opening to keep contaminants out during field use. Inspect the cap and ensure it threads on completely and seats firmly against the pinpointer body to maintain proper protection for your MI-6 or MI-4 pinpointer.

Tighten the cap until it seats firmly against the pinpointer body and feels snug. The cap should compress the seal without requiring excessive force to remove for battery changes. If the cap spins freely without tightening, the threads may be stripped and the pinpointer body may need service. Avoid forcing the cap beyond a firm, secure fit to protect the threading.

You can order multiple caps to keep spares in your dig kit, vehicle, or gear bag. Many detectorists who hunt frequently or in rugged terrain stock two or three backup caps to avoid mid-hunt equipment failures. The low cost of the cap makes it practical to maintain spares across multiple hunting locations. If you run both an MI-6 and an MI-4, the universal fit means one spare cap works for both pinpointers.

The cap installs by threading it onto the pinpointer's battery compartment opening until it seats against the body. No special tools are required, and the red membrane filter is pre-installed. Remove the old cap by unscrewing it counterclockwise, then thread the new cap clockwise until snug. Ensure the battery compartment is clean and dry before installing the new cap to prevent trapping debris under the seal.

Purchasing from an authorized XP dealer ensures you receive a genuine XP part that meets the manufacturer's specifications. If the cap arrives damaged or defective, Serious Detecting's 30-day return policy covers the replacement. Contact our customer service team if you receive a cap with any manufacturing defects or shipping damage.

This cap is proprietary to XP's MI-6 and MI-4 pinpointer models and will not fit pinpointers from Garrett, Minelab, Nokta, or other manufacturers. Attempting to force a cap from one brand onto another brand's pinpointer can damage the threads and void the warranty. If you need a replacement cap for a non-XP pinpointer, check the manufacturer's parts catalog for the correct component.

A pinpointer cap's lifespan depends on usage frequency, handling practices, and environmental exposure. Inspect the cap and red membrane filter for cracks or deformation every few months to catch damage before it compromises the battery compartment seal. Regular inspection helps you identify when replacement is needed to maintain your pinpointer's protection against dirt and moisture. For more guidance on maintaining XP pinpointers and other detecting gear, explore our selection of XP metal detectors and accessories.