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Sierra 18-5777 Switch Box Power Pack for Mercury Outboard Engines

Manufacturer

Sierra

Picture for manufacturer Sierra

Part Number

18-5777
20 reviews
03/12/2036 12:09 AM
Sale Price

$179.54

In Stock (10+)

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Usually delivered within 2 days

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Fitment guaranteed

Fitment guaranteed

Product Details

The Sierra 18-5777 is a high-quality aftermarket switch box (also known as a power pack or CDI unit) designed for Mercury and Mariner 2-stroke outboard engines. This critical ignition component ensures reliable spark delivery for optimal engine performance and starting.

Key Features:

  • Direct replacement for Mercury OEM part numbers 339-7452A7, 339-7452A8, 339-7452A9, 339-7452A11, 339-7452A14, 339-7452A15, 339-7452A19, and 339-7452A21
  • Also replaces CDI Electronics 114-7452K1 and Mallory 9-25102, 9-25103
  • Manufactured to meet or exceed OEM specifications for reliability
  • Designed for 1980-1996 Mercury and Mariner 2-stroke outboard engines
  • Compatible with 6, 8, 9.9, 15, 20, and 25 HP models (specific serial numbers apply)

Engine Model Compatibility:

  • 6 HP - Serial Number A197112 and up
  • 8 HP - Serial Number A197112 and up
  • 9.9 HP - Serial Number A197112 and up
  • 15 HP - Serial Number B292414 and up
  • 20 HP - Serial Number B238464 through G760299
  • 25 HP - Serial Number B238464 through G760299
  • 210CC Sail Power - Serial Number A918999 and up

Sierra Marine is a trusted name in aftermarket marine engine parts, known for quality construction and dependable performance. Always verify your engine's serial number and current part number before ordering to ensure proper fitment.

Products specifications

Type

Ignitions

Easy order process

So far its been seamless.. easy to find the products and many payment options. love this place!

So far so good website was easy to manage cheka was a breeze we'll see how quickly they get order here.

Only issue I had was that order could not be completed on Amazon, stating "items cannot ship to your location." I simply went to your website and ordered items. So a little inconvenient, but no biggie.

The Generator Service kits that were ordered were delivered in a timely fashion and at a reasonable price. These are currently my go-to guys for Onan parts

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Fast

Best price, quick delivery.

price is good. shipping is quick. customer service is also good. NO problem so far.

wish there was also a paypal option.

good price and easy ordering

EZ as it gets!

Easy to find products and Information regarding the product to ensure it fits your car is listed.

Excellent customer service....<br>fast delivery<br>and good quality parts<br><br>

Quick and easy

Best prices with fast shipping and order updates. Will buy from again.<br>

Good so far.

Good

Good website.

Ordered an EGR bug shield. After a short delay due to the Christmas holiday I called and customer service quickly tracked it down and it showed up a few days later. Best price on the internet!

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