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Gearcase Pressure/Vacuum Tester Assembly (AMT0095)

Genuine Part # : 551-34PV

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  • 1 YEAR


  • ISO 9001 Certified
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Includes adapters for Suzuki, Tohatsu, and Yamaha lower units.

This combination unit does both pressure and vacuum testing in 1 unit. Frequent changing of lower unit gear oil is critically important not because the gear oil degrades, its because this is your chance to catch water intrusion into your gearcase. Most people simply drain the oil, check for water, then replace the oil with fresh. However, this tool provides you the opportunity to test the performance of the gear case seals.

The gear case seals on the drive and prop shafts are actually each comprised of two oil seals. One is orientated to keep the oil in the gear case and the other is oriented to keep the water out of the gear case. This tool will allow you to pull and hold both vacuum and pressure, testing for degradation of either seal in the set.

Replaces genuine tool #: 551-34PV.

This tool suits the following: Most Yamaha, Mercury Mariner, Evinrude Johnson, Suzuki, Tohatsu, Chrysler and Force outboards.


About The Brand

Marine Tech Tools specialise in high quality specialty workshop tools for marine mechanics and boat owners alike. Based in Charleston, South Carolina USA their engineering attention to detail is second to none.

  • Standard Shipping is free on all orders. Oils & Lubricant products can only be sent via Standard Shipping.
  • Express Shipping is $10 flat rate.
  • Pick up is available from our warehouse at 1/84 Brunel Road, Seaford VIC 3198 between the hours of 8:30am to 3:30pm weekdays. You will be notified by email when your order is ready for pick up.

Delivery Time

Orders are dispatched same business day if ordered before 3:00pm AEDT. All orders are dispatched from Melbourne, Victoria and are sent via Australia Post.

For delivery time estimates with Australia Post please use their delivery calculator here:

If you have any questions relating to shipping, please contact us by emailing

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