Do I really need a coil cover for my metal detector?

Yes, for any detector used on real ground rather than a lawn. The coil's underside is a thin plastic housing that drags across rocks, roots, and gravel on every swing, and a cracked housing lets moisture into the internal windings — the exact failure most detectorists blame on a bad coil when it's really a missing $10-$20 cover. Garrett's 8.5x11 DD Search Coil Cover was $12.79 at Serious Detecting on October 31, 2026, cheap insurance against a replacement coil that costs $130-$185 at the same dealers.

Will a coil cover affect my detector's depth or sensitivity?

No meaningfully. A properly fitted cover from the same brand as the coil sits flush against the housing and adds only a thin layer of plastic between the windings and the ground — well within the depth variation caused by soil mineralization or target size on any given hunt. A loose or oversized aftermarket cover that flaps or traps debris underneath it is the version that actually costs you performance, not the cover itself.

Can I use a universal coil cover instead of the brand-specific one?

You can for casual use, but a brand-matched cover — like Minelab's own EQX 11 skidplate for the Equinox or Nokta's SX28 cover for the Simplex Ultra — fits tighter and stays put longer. Brand-matched covers are cheap: every one we priced at US dealers on October 31, 2026 cost between $10 and $20 for a stock-size coil. Generic stretch-fit sleeves exist, but we couldn't confirm the fit or price of any of them at a detector dealer, so we no longer rank one.

Which coil cover fits the Garrett ACE 300?

Not the 8.5x11 cover. Garrett's 8.5" x 11" DD cover fits the stock DD coil on the ACE 400 and AT Pro, but the ACE 300 ships with a 7" x 10" concentric coil and the ACE 200 with a 6.5" x 9" coil, as covered in our ACE 300 and ACE 200 reviews. Buy the cover sized for the coil you actually have; Garrett's 6.5" x 9" ACE cover is $12.79 at Serious Detecting.

Which skidplate fits the Minelab Vanquish?

Match the coil size. Minelab's V8, V10 and V12 skidplates were $10, $12 and $14.04 at Detector Warehouse on October 31, 2026. The V10 skidplate fits the 10 x 7 in coil on the Vanquish 340 and, per Serious Detecting's listing, the V10X coil on the Vanquish 360 and 460; the V12 skidplate fits 12 x 9 in Vanquish and X-Terra Double-D coils.

How do I know when it's time to replace a coil cover?

Replace it once you see through-wear spots, cracks at the mounting tabs, or a section thin enough to flex differently from the rest of the cover — all signs the housing underneath is now taking direct impact instead of the cover. Most detectorists get a full season or more of regular hunting out of one cover before it needs swapping, and swapping a $10-$20 cover is always cheaper than repairing or replacing the coil it protects.

Best Metal Detector Coil Covers (2026)

Quick Answer: The best metal detector coil cover is the one molded for your exact coil, and for most popular detectors it costs $10-$20. Garrett’s 8.5x11 DD cover ($12.79) fits the stock coil on the ACE 400 and AT Pro (not the ACE 300, which has a 7x10 coil). Minelab owners want the EQX 11 skidplate ($20) for the Equinox, the M9 skidplate ($18) for the Manticore, or a Vanquish V8/V10/V12 skidplate ($10-$14.04). Nokta Simplex Lite, BT and Ultra owners want the SX28 11” cover ($19.99); the Simplex+ takes the separate SP28. Prices are US dealer listings checked October 31, 2026.

Updated October 31, 2026: we re-priced every cover at US Minelab, Garrett and Nokta dealers (Serious Detecting, Detector Warehouse, High Plains Prospectors) instead of marketplace listings, and fixed three fit errors. Garrett’s 8.5x11 cover doesn’t fit the ACE 300’s stock 7x10 coil; Nokta’s SX28 cover fits the Simplex Lite, BT and Ultra, while the Simplex+ uses the SP28; and the Simplex Ultra is $299, not $999. We replaced the unverifiable universal sleeve with Minelab’s Vanquish skidplates.

A coil cover is the cheapest piece of insurance in this hobby, and it’s also the accessory most new detectorists skip entirely until their coil’s underside is already scarred from a season of dragging across gravel and roots. Below are five brand-matched options, so whatever’s on the end of your shaft right now has something protecting it.

Our top picks at a glance

Cover	Best for	Fits	Price (Oct 31, 2026)	Rating
Garrett 8.5x11 DD Search Coil Cover	Best overall	Garrett 8.5"x11" DD coils (ACE 400, AT Pro stock coil)	$12.79 (Serious Detecting)	★★★★★
Minelab EQX 11 Skidplate	Best for Minelab Equinox	EQX 11 coil (Equinox 600/700/800/900)	$20 (Serious Detecting, Detector Warehouse)	★★★★★
Nokta SX28 11" Coil Cover	Best for Nokta Simplex	SX28 coil (Simplex Lite, BT, Ultra)	$19.99 (Detector Warehouse)	★★★★☆
Minelab M9 Skidplate	Best for Minelab Manticore	Manticore stock M9 coil	$18 (Serious Detecting)	★★★★☆
Minelab Vanquish V8 / V10 / V12 Skidplates	Cheapest / best for Vanquish	Vanquish 8x5, 10x7 and 12x9 in DD coils	$10 / $12 / $14.04 (Detector Warehouse)	★★★★☆

1. Garrett 8.5x11 DD Coil Cover, Black — Best Overall

Garrett 8.5x11 DD Coil Cover, Black

Best overall · $12.79

Direct-fit cover for Garrett's 8.5"x11" DD coils, including the stock coil on the ACE 400 and AT Pro.
Hard plastic, semi-elliptical, Garrett part 1606600; $12.79 at Serious Detecting ($15.99 compare-at).
Genuine Garrett accessory, not a third-party reproduction.

If your detector is a Garrett ACE 400 or an AT Pro, this is the cover to buy first, and at $12.79 there’s no real reason to skip it. Check your coil before you order, though: the ACE 300 ships with a 7”x10” concentric coil and the ACE 200 with a 6.5”x9” coil, per our ACE 300 review, so neither takes this cover. Garrett’s 6.5”x9” ACE cover is the same $12.79 at Serious Detecting. Since the ACE series is coil-only waterproof rather than fully submersible (per Garrett’s own published specs), the cover is doing double duty there: shielding the housing from abrasion and keeping grit out of the seam where the coil meets its waterproofing.

2. Minelab EQX 11 Skidplate — Best for Minelab Equinox

Minelab 11" EQX 11 Search Coil Cover Skidplate

Best for Equinox · $20

Purpose-built skidplate for the 11-inch EQX 11 coil that ships on the Equinox 600, 700, 800, and 900.
Genuine Minelab part — matches the factory mounting points exactly.
Covers only the main 11-inch coil; the 6-inch EQX 06 coil uses its own $12 cover and the 15x12 EQX 15 a $40 one (Serious Detecting).

Our Minelab Equinox 900 review covers why the stock 11-inch EQX 11 coil is the workhorse most Equinox owners swing every hunt. At $20 (Serious Detecting and Detector Warehouse on October 31, 2026, against $25-$26 compare-at prices) this skidplate costs about 2% of a $999 Equinox 900. Since the Equinox line is IP68-rated to 5 m, the cover’s main job here isn’t waterproofing — it’s protecting the coil’s paint and housing from the scrapes that come with wading rocky creek beds and tide lines the machine is built to handle.

3. Nokta SX28 11” Search Coil Cover — Best for Nokta Simplex

Nokta SX28 11" Search Coil Cover

Best for Nokta Simplex · $19.99

Fits the 11-inch SX28 coil used on the Simplex Lite, Simplex BT and Simplex Ultra, per Detector Warehouse's listing.
The older Simplex+ uses a different 11-inch coil and cover, the SP28 (also $19.99 at Detector Warehouse).
Snap-on design guards against rocks, roots, and debris during aggressive hunting.

The Simplex Ultra ships with an 11-inch DD coil and a full IP68 rating on the entire control box, not just the coil — one of the few budget machines matched against Minelab’s own submersion rating. At $19.99 the SX28 cover costs about 7% of the $299 machine it protects, and since Nokta markets the Simplex line hard toward beach and creek hunting, a cover that keeps grit out of the coil seam earns its price fast in that kind of use. If you own the older Simplex+, buy the SP28 cover instead; the two aren’t interchangeable.

4. Minelab M9 Skidplate — Best for Minelab Manticore

Minelab 9" Skidplate Coil Cover for Manticore (M9 DD)

Best for Manticore · $18

Direct-fit skidplate for the Manticore's stock 9-inch M9 DD coil, Minelab part 3011-0476.
$18 at Serious Detecting ($23 compare-at), October 31, 2026.
The optional 8" M8 coil uses its own skidplate.

Our Manticore review covers the roughly $500 premium the Manticore commands over the Equinox 900 for its faster processor and 2D target-trace display. On a $1,499 flagship, an $18 skidplate is about 1.2% of the price. If you’ve swapped to the smaller optional 8” M8 coil for tight sites, buy the matching M8 skidplate instead; the two aren’t interchangeable.

5. Minelab Vanquish V8 / V10 / V12 Skidplates — Cheapest Pick

Minelab Vanquish Skidplates (V8, V10, V12)

Cheapest brand-matched covers · $10-$14.04

V8 8x5 in $10, V10 10x7 in $12, V12 12x9 in $14.04 at Detector Warehouse (October 31, 2026).
The V10 skidplate fits the Vanquish 340's stock V10 coil and, per Serious Detecting's listing, the V10X coil on the Vanquish 360 and 460.
The V12 skidplate fits 12x9 in Vanquish and X-Terra Double-D coils, per Serious Detecting's and High Plains Prospectors' listings (High Plains names the X-Terra Pro).

These are the cheapest brand-matched covers we priced. The $199 Minelab Vanquish 340 only waterproofs its coil (to 1 m), so a $12 V10 skidplate is worth adding on day one. On the fully submersible Vanquish 360, 460 and 560, the skidplate’s job is the same as on an Equinox: scrape protection. Older machines are covered too. Detector Warehouse lists Fisher covers from $11 (7-inch round for the F11, F22 and F44) and Bounty Hunter 8-inch and 10-inch covers at $16, so check for a brand-matched cover before you settle for a generic sleeve.

Coil covers by the numbers

Garrett’s 8.5x11 DD cover is $12.79 at Serious Detecting (October 31, 2026), under 4% of the $357.99 ACE 400 it protects.
Minelab’s EQX 11 skidplate is $20 and the M9 skidplate $18 (Serious Detecting and Detector Warehouse), against $23-$26 compare-at prices.
Nokta’s SX28 cover is $19.99 at Detector Warehouse, about 7% of the $299 Simplex Ultra.
Minelab’s Vanquish skidplates run $10-$14.04 at Detector Warehouse, the cheapest brand-matched covers we found.
A replacement stock coil costs 10-12 times as much as its cover: $130 for a Minelab V10X and $135 for a V10 at Serious Detecting, and $157.75 for Garrett’s 8.5x11 DD coil at Detector Warehouse.

How to choose a coil cover

Match the cover to your exact coil, not just your detector brand. Minelab alone sells separate covers for its 6”, 9”, 11” and 15x12” Equinox and Manticore coils and three Vanquish sizes — buying the wrong size means a loose fit that traps debris underneath instead of shedding it.
Check the coil, not the model name. Garrett’s ACE 300 and ACE 400 look alike but ship with different coils, and Nokta’s Simplex+ and Simplex Ultra take different covers.
Buy the genuine brand-specific cover when one exists. It’s molded to the exact housing shape and factory mounting tabs, and every one we priced cost $10-$20 for a stock-size coil.
Replace at the first sign of through-wear, not total failure. A thin spot or crack at a mounting tab means the housing underneath is now taking direct impact.
Don’t skip it because your detector is waterproof. An IP68 rating protects against submersion, not the physical abrasion of dragging a coil across rocks and roots all day — that’s the cover’s job.

The bottom line

Match the cover to the coil you actually own: Garrett’s $12.79 8.5x11 DD cover for an ACE 400 or AT Pro, Minelab’s $20 EQX 11 or $18 M9 skidplate for an Equinox or Manticore, a $10-$14.04 Vanquish skidplate for any Vanquish, and Nokta’s $19.99 SX28 cover for a Simplex Lite, BT or Ultra. Whichever you pick, it’s the cheapest protection in the hobby against a coil repair or replacement that costs many times more. For the rest of a complete setup, see our full accessory guide, and for keeping what you dig up safe once it’s out of the ground, check our best relic display case guide.

Sources (checked October 31, 2026): dealer listings at Serious Detecting, Detector Warehouse and High Plains Prospectors; coil sizes from our own Garrett ACE 200, ACE 300, ACE 400 and AT Pro reviews and Minelab’s Vanquish tech-spec sheets.