Nissan H233B 4.63 Ratio Reverse Ring And Pinion Nitro Gear and Axle

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Nissan H233B 4.63 Ratio Reverse Ring And Pinion Nitro Gear and Axle

Nissan Patrols are known around the world for their strength & reliability. Out of the box, they feature some stout drivetrain. However, after a lift and oversized tires are installed, performance and economy suffer.

The best remedy is to change the gear ratio in your differentials. OEM Ring & Pinion gears are difficult to source in low ratios, and very expensive. Since Nissan Patrols are not offered in the USA, none of the primary Gear suppliers have offered anything aftermarket, until now.

Nitro Gear & Axles has addressed this by offering 4.63:1 Ring & Pinions for the robust H233B rear and the H233B front Reverse cut diff. Nitro Gear has quickly become the #1 choice for aftermarket gear ratios around the globe, and makes an effort to cater to demands of consumers whether in the USA or otherwise.

Vehicle Applications:

  • 1987-1998 Nissan Patrol GQ Y60 (Front)
  • 1998-2009 Nissan Patrol GU Y61 (Front)
  • 1987-1998 Nissan Safari (Front)
  • 1988-1994 Ford Maverick (Front)

Note:  Some of these applications have multiple axle options.  

These are for the H233B Axles which are all Drop Out Third-Member Solid Axles.

⚠ WARNING Cancer and Reproductive Harm -

Differential: H233B
Gear Ratio: 4.63 Reverse
Tooth Count: 37/8
Pinion Splines: 29
Ring Gear Bolts: 9 (not included)
Manufacturer: Nitro Gear & Axle


1987 Nissan Patrol
1988 Nissan Patrol
1989 Nissan Patrol
1990 Nissan Patrol
1991 Nissan Patrol
1992 Nissan Patrol
1993 Nissan Patrol
1994 Nissan Patrol
1995 Nissan Patrol
1996 Nissan Patrol
1997 Nissan Patrol
1998 Nissan Patrol
1999 Nissan Patrol
2000 Nissan Patrol
2001 Nissan Patrol
2002 Nissan Patrol
2003 Nissan Patrol
2004 Nissan Patrol
2005 Nissan Patrol
2006 Nissan Patrol
2007 Nissan Patrol
2008 Nissan Patrol
2009 Nissan Patrol

If you have any questions on the use or installation of this product please contact our customer support at (559)-549-6737

All products carry our 12 Month Limited Warranty. All warranties are limited to the original purchaser and are not transferable to subsequent owners of the product. The warranty period begins on the purchase date. Trail-Gear warrants that it will repair or replace, free of charge, any eligible product which, under normal conditions of use and service, proves to be defective in materials or workmanship. This warranty does not cover any labor costs incurred in diagnosis of defects, removal or reinstallation of a product, nor does it cover any other consequential expenses.

Please read and review our return and warranty requirement document before sending in products.

Warranty Exclusions

Trail-Gear Inc. warranty does not cover, and Trail-Gear Inc. shall not be liable for, any undertaking, representation, or agreements made by dealers or other third parties selling Trail-Gear products, except where such agreements are within the provisions of this Warranty.

Specifically excluded from this warranty are failures caused by lack of maintenance, misuse, negligence, modification, abuse, improper application, crash damage, installation or operation, or failures caused by unauthorized service or use of unauthorized parts.

Additionally excluded from this warranty are parts which are subject to normal wear and tear, such as bushings, fluids, hoses, gaskets, belts, etc. Products not manufactured by Trail-Gear Inc. are excluded from any warranty and shall be handled with the original manufacturer.

All parts used in a competitive racing environment are excluded from this warranty. If, after inspection, a part returned, under any warranty, is deemed to be ineligible for warranty repair or replacement, the part may be repaired or replaced for a discounted cost. Return shipping charges will apply. Any part for which a warranty replacement is sought must be returned to Trail-Gear Inc. before any replacement items can be shipped. All replacement parts shipped before the suspect part has been received and evaluated by Trail-Gear, MUST BE PAID IN FULL. In such a case, after the suspect part has been received and approved for a warranty replacement, the purchase price for the replacement will be refunded.

    To begin your warranty claim:
  • Please contact Trail-Gear Inc. at 559-252-4950 or email [email protected] prior to returning any product under warranty to verify that warranty is still in effect.
  • Products must be shipped back to Trail-Gear Inc. at the expense of the customer.
    Ship all products to:
    5356 E. Pine Avenue
    Fresno, CA 93727.
  • Please place a clearly marked copy of the original invoice inside the package.
  • Please include a short note stating the problem you are experiencing.

If any of the above mentioned policy is not met, the package will be refused or warranty claim denied. By completing the steps above, this will ensure faster processing of your claim so that Trail-Gear can get your product back to you as quickly as possible. All warranties are generally processed within 2-3 business days of Trail-Gear receiving the parts from you. Additional delays may be incurred if product needs additional testing or repairing.

If you are an international customer, please email the warranty department at [email protected] to receive further instruction. International customers may have the option to field destroy an approved warranty to avoid costly return shipping. In this case, any shipping charges for replacement parts will be at the expense of the customer.

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