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Description

Kawasaki 1500 NA 148mm Pump Upgrade Instructions

 

Here at KP we have redesigned the entire 148mm jet pump, from CAD Software all the way to machining the parts in house.

 

The Kawasaki design is good, but there is nothing to prevent the pump shaft from shoving into the engine. This upgrade kit will not only protect your engine from pump failure, it is also significantly stronger, more precise, and increases pump stability.

This kit includes a premium bearing, precision cones, premium O-rings, grade 8 nut, and to tie it together a precision ground shaft which is heat treated and threads dipped in Moly Lube.

The cone is also redesigned to give you additional RPM and less cavitation.

 

These kits are much stronger than the Kawasaki setup, and are designed for the everyday rider and racer.

The basic kit comes with just the shaft, bearing, o-rings and cones.

The full Kit comes with everything to upgrade and rebuild the pump (Comes with grease syringe), besides the spline tool you will need here.

Designed and manufactured exclusively by KP.

Check Out Our Installation videos here:

Additional information

Weight 0.8 lbs
Dimensions 9 × 4 × 2 in
Kit Type

Basic Kit, Full Kit

OEM Part #

59496-0001, 59496-3756, 59496-0003, 59496-3737, 59496-3767, 59496-0002, 59496-0007

Pump Fitment

2003-2005 Pump, 2006-2011 Pump, 2012+ Pump

Brand

KP, OEM

5.0
5.0 out of 5 stars (based on 2 reviews)
Excellent100%
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You can have confidence in this kit!

01/16/2026

I purchased this kit after watching many videos explaining why this upgrade is important for protecting your investment by protecting the engine in your ski from jet pump bearing failure. Other videos showed instalation of the upgrade which were very helpful. I think one importance thing that was not emphasized enough was that, not only is a thread on the shaft and a nut for is added but the overall configuration of the shaft bearing changes. Steve at Kawi Performance listened to my concerns, verified my setup, and assured me that the kit I purchased was correct. I installed it and sure enough it fit and operated perfectly. Just remember, when they say, “single bearing setup” it doesn’t mean there is only one bearing in the whole pump, it means only one case bearing and also one further down the shaft closer to the cone. During the upgrade, that shaft bearing goes away and the new bearing that takes its place will now be in the new cone(that is totally different than the original cone. Anyway, I am happy with the quality of this product and customer service, shipping options and arrival time, tachinal support availability, both phone support and social media presence with many great video for jetski enthusiasts and wannabe mechanics like myself.

Gene Burlette

No Title

05/15/2025

Best Customer Service Ever! Not exaggerating!!! Before I ordered a few parts I email to check back order status. Kawiperformance replied same day and it was after hours. The parts were on hand and ready to ship. I placed my order and they shipped all my parts the same day!!!!…so if it says back ordered….don’t sweat it. They probably have it!

Then….I had a problem with the installation of the pump upgrade kit…it was my fault i was in a hurry…I emailed Kawiperformance about my issue and they solved my problem same day. It really is Customer Service that almost doesn’t exist anymore!!!

If you need something for your ski…ask them

If you have questions…send it

I’m on the opposite side of the country and shipping was fast!

Jclradski

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