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BRAND NEW open box 3.9:1 Final Drive. These gears were installed in a differential in house before shortly being removed (before fluid fill) for a different ratio. They are in perfect condition functionally and available at a slightly discounted rate.

Stock Description Below


For those of you looking for increased performance off the line we now offer this Nissan OEM final drive ring and pinion gear set.  These gears will fit 03+ model differentials, manual transmission model cars only, and will increase acceleration.  This of course comes at a trade off of higher cruise speed RPM and decreased fuel mileage.

We offer an installation kit that contains all new Nissan OEM bearings and seals. We highly recommend the purchase and use of this install kit.  Please note that installing a ring and pinion requires precision setting of the bearing pre-load and clearances to complete the job. When installing be sure to keep the factory shims in their respective locations. Shims should not need to be changed.

Included in the Bearing and Seal Kit:

  • 2 X Nissan OEM Differential Side Carrier Bearings
  • 2 X Nissan OEM Differential Side Oil Seals
  • 1 X Nissan OEM Inner "Back" Pinion Gear Bearing
  • 1 X Nissan OEM Pinion Crush Sleeve
  • 1 X Nissan OEM Outer "Front" Pinion Gear Bearing
  • 1 X Nissan OEM Pinion Oil Seal
  • 1 X Permatex Ultra Gray Gasket Maker

It is highly recommended that an experienced mechanic install this ring and pinion gear set as excessive noise or even catastrophic failure can result from improper installation.  If you would like to have your gear set installed at Z1, please contact us at service@z1motorsports.com for an installed price.

Please choose the appropriate options below including our Full OEM Differential Bearings and Seals Kit for all the additional parts you'll need to complete the install.  

If you are unsure of your current gear ratio, please take a look at the Gear Ratio Chart found HERE.


Due to the availability and condition of these parts, all liquidation items are sold "as is" and cannot be returned for any reason. Z1 offers several blemished / overstock items at a substantial discount in our Liquidation Station.

$548.00

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