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Marine Diagnostic Tools Cojali Mercury 10 Pin (MEFI 1-4) Cable for Jaltest Marine (JDC604.9)
Marine Diagnostic Tools Cojali Mercury 10 Pin (MEFI 1-4) Cable for Jaltest Marine (JDC604.9), view 2Marine Diagnostic Tools Cojali Mercury 10 Pin (MEFI 1-4) Cable for Jaltest Marine (JDC604.9), view 3
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Cojali Mercury 10 Pin (MEFI 1-4) Cable for Jaltest Marine (JDC604.9)

$110

In stock at marinediagnostictools.com

This Cojali cable connects Jaltest Marine software to Mercury outboard and inboard engines with MEFI 1-4 controllers and a 10 pin connector. Part number JDC604.9 is 6 inches long. It connects through the JDC100B or directly to the V9 box, depending on the connection. At $110.00, it is a single-purpose cable rather than a kit.

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Highlights

  • Genuine Cojali part JDC604.9
  • Covers Mercury outboard and inboard engines with MEFI 1-4 controllers and a 10 pin connector
  • Works with Jaltest Marine
  • Length: 6 inches
  • Connects via the JDC100B or directly to the V9 box, depending on the connection

Best for

Jaltest users servicing MEFI-era MerCruiser and Mercury engines.

Things to consider

  • The description calls it a 4 pin cable in one place while the title says 10 pin; the seller says JDC604A and JDC604.9 differ only in where the battery leads attach.
  • It only works with the Jaltest platform; it is not a standalone scan tool.
  • Use the seller's Cable Finder or call their team to confirm the right cable for your engine before ordering.

Key specs

Price$110
ManufacturerCojali
Part numberJDC604.9
Length6 inches
PlatformJaltest Marine
Connects tothe JDC100B or directly to the V9 box, depending on the connection

Our take

A necessary, genuine Cojali link for Mercury 10 pin (MEFI 1-4) work if you already run Jaltest; confirm the part against your engine first.

Cojali Mercury 10 Pin (MEFI 1-4) Cable for Jaltest Marine… at a glance

BrandMarine Diagnostic Tools
Price$110
TypeCables
AvailabilityIn stock at marinediagnostictools.com
ReturnsMaster and Gas Pro kits can be refunded within 30 days of delivery after tech support…

Price check

At $110, the Cojali Mercury 10 Pin (MEFI 1-4) Cable for Jaltest Marine… is mid-range for Marine Diagnostic Tools, 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 engines does the JDC604.9 cable work with?
The listing says it connects Mercury outboard and inboard engines with MEFI 1-4 controllers and a 10 pin connector.
Do I need anything else to use it?
Yes. It needs the Jaltest diagnostic interface and software. It connects through the JDC100B or directly to the V9 box, depending on the connection.
How do I know it's the right cable?
The seller offers a Cable Finder that shows the diagnostic port location for each engine, and a phone line for questions.
How much is the Cojali Mercury 10 Pin (MEFI 1-4) Cable for Jaltest Marine…?
Marine Diagnostic Tools lists it at $110 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 Cojali Mercury 10 Pin (MEFI 1-4) Cable for Jaltest Marine…?
The Cojali Mercury 10 Pin (MEFI 1-4) Cable for Jaltest Marine… 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 Cojali Mercury 10 Pin (MEFI 1-4) Cable for Jaltest Marine… 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 Cojali Mercury 10 Pin (MEFI 1-4) Cable for Jaltest Marine… expensive?
At $110 it is mid-range for Marine Diagnostic Tools ($1 to $5,600 across 162 products).

More from Marine Diagnostic Tools

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