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Marine Diagnostic Tools MDT Marine Master Diagnostic Kit
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MDT Marine Master Diagnostic Kit

$500

In stock at marinediagnostictools.com

The MDT Marine Master Diagnostic Kit is a dealer-level scan system covering inboard, outboard, gas, diesel, PWC and generator engines in one package. It ships with a 12-inch rugged tablet, a communication interface and a large cable set, and runs on a 3-year contract with updates, repair data and support. It is built for marine shops that see every make through the door.

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Highlights

  • Software covers inboard, outboard, PWC, generator, diesel and gas engines across makes
  • Reads and clears codes, runs injector, fuel pump and cylinder cut-out tests, and performs calibrations
  • Wiring diagrams, troubleshooting guides and service data built in
  • Kit includes 12-inch rugged tablet, VCI, universal multipin kit and brand cables for Yamaha, Mercury, Honda, Evinrude, Suzuki and more
  • 3-year package bundles warranty, software updates, repair information and tech support

Best for

Independent marine repair shops working on many engine brands, including diesels and generators.

Things to consider

  • The $500 is only the down payment: you then pay $316.99 a month or $72.99 a week under a 3-year contract, which adds up to well over $11,000
  • It is a signed contract program, and delivery requires a signature
  • Overkill for an owner with one boat; single-brand handheld tools cost far less

Key specs

Down payment$500 plus tax and shipping
Ongoing payment$316.99/month or $72.99/week
Term3 years
Tablet12-inch rugged tablet
CoverageInboard, outboard, PWC, generators, diesel, gas
IncludesTablet, software, VCI, cables and adapters, tech support

Our take

A comprehensive shop tool priced like one. Worth it if multi-brand diagnostics drive real revenue; the Gas Pro kit saves money if you never touch diesels.

MDT Marine Master Diagnostic Kit at a glance

BrandMarine Diagnostic Tools
Price$500
TypeComplete Kit
AvailabilityIn stock at marinediagnostictools.com
ReturnsMaster and Gas Pro kits can be refunded within 30 days of delivery after tech support…

Price check

At $500, the MDT Marine Master Diagnostic Kit is toward the top of Marine Diagnostic Tools's price range, whose 162 listed products run $1 to $5,600.

Buying from Marine Diagnostic Tools

Marine Diagnostic Tools is built for independent marine techs, boatyards, and fleet shops that want dealer-level diagnostics across many engine brands without buying each OEM tool. A boat owner with one engine brand may be better served by a single-brand MINI Scan Tool, or by a dealer visit. Before buying a full kit, call sales to confirm the total price, which cables you'll need, and the training required to qualify for the money-back guarantee.

Shipping
Most orders process the same day or within 3 business days, with orders placed after 11 a.m. processed the next business day. Shipping charges are calculated at checkout, and tracking is emailed when the order ships.
Returns
Master and Gas Pro kits can be refunded within 30 days of delivery after tech support troubleshooting and training enrollment. MINI kits can be returned within 30 days minus a 20% restocking fee; software, renewals, used kits, and customer-caused damage are not refundable.

Read our full Marine Diagnostic Tools review and shop all products →

Frequently asked questions

What does the MDT Master Kit really cost?
You pay $500 up front, then $316.99 monthly or $72.99 weekly for three years. Updates, warranty, repair info and support are bundled into those payments.
Is there a credit check?
MDT says there is no credit check and no hidden fees, but you sign a 3-year contract.
Does it work on diesel engines?
Yes. Unlike the Gas Pro kit, the Master Kit covers diesel engines and generators as well as gas.
How much is the MDT Marine Master Diagnostic Kit?
Marine Diagnostic Tools lists it at $500 on marinediagnostictools.com. We refresh prices throughout the day, but always confirm the final price at checkout.
What is Marine Diagnostic Tools's return policy?
Master and Gas Pro kits can be refunded within 30 days of delivery after tech support troubleshooting and training enrollment. MINI kits can be returned within 30 days minus a 20% restocking fee; software, renewals, used kits, and customer-caused damage are not refundable.
How long does Marine Diagnostic Tools take to ship?
Most orders process the same day or within 3 business days, with orders placed after 11 a.m. processed the next business day. Shipping charges are calculated at checkout, and tracking is emailed when the order ships.
Where can I buy the MDT Marine Master Diagnostic Kit?
The MDT Marine Master Diagnostic Kit is sold directly by Marine Diagnostic Tools on marinediagnostictools.com. The Shop now button on this page goes straight to the product there.
Is the MDT Marine Master Diagnostic Kit in stock?
Yes. Marine Diagnostic Tools lists it as in stock on marinediagnostictools.com as of our latest check. Stock and prices refresh throughout the day.
Is Marine Diagnostic Tools a legit store?
Marine Diagnostic Tools is built for independent marine techs, boatyards, and fleet shops that want dealer-level diagnostics across many engine brands without buying each OEM tool. A boat owner with one engine brand may be better served by a single-brand MINI Scan Tool, or by a dealer visit. Before buying a full kit, call sales to confirm the total price, which cables you'll need, and the training required to qualify for the money-back guarantee. Our full Marine Diagnostic Tools review covers shipping, returns and what to check before ordering.
Is the MDT Marine Master Diagnostic Kit expensive?
At $500 it is toward the top of Marine Diagnostic Tools's range ($1 to $5,600 across 162 products).

More from Marine Diagnostic Tools

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