Longfield™ Nissan Patrol Birfield Kit

The Longfield™ Gun Drilled 30-Spline Birfields are made out of 100% chromoly and are precision polished to remove any imperfections that may cause stress risers. The internals of the birfield are also made from 4340 chromoly and are dual heat treated for superior strength. The birfield has a M8 grease zerk at the end of the stub shaft and is gun drilled through the center of the birfield to allow for grease to pass through the zerk fitting and into the internals. This will save you precious time by eliminating the need to disassemble your axle just to service your birfields.

The Gun Drilled 30-Spline Birfields also have a shallow relief near the splines on the stub shaft known as a Machined Spline Saver. The Machined Spline Saver eliminates stress concentrations caused by grooving from the tool that makes the splines on the stub shaft. The stress concentration from the spline groove is a common failure point on birfield stub shafts.

The axle shafts are also made out of 4340 chromoly steel. The Birfield side of the axle shafts are 30-spline and the diff side is 31-spline.

• Made out of 100% chromoly and are precision polished to remove any imperfections that may cause stress risers
• Birfield housing is made out of forged 4340 chromoly steel
• Internals of our Longfield™ birfields are made out of 4340 chromoly steel and then dual heat-treated for superior strength
• The Birfield side of the axle shafts are 30-spline and the diff side is 31-spline

Suits:

• Nissan Patrol GR (Y61) 1997-2013 (All Engines)
• Nissan Patrol GU 1997-2013 (All Engines)
• Nissan Patrol Y61 1997-2013 (All Engines)
• Nissan Safari 1997-2004 (All Engines)
• Nissan Patrol Super Safari 1997-2013 (All Engines)

• Warranty

  This Trail-Gear product is backed by a 12-Month Limited Warranty, effective from the date of purchase. This warranty is valid for the original purchaser only and is non-transferable.

  Under normal conditions of use and service, Trail-Gear warrants that eligible products will be free from defects in materials and workmanship. Any such defective product will be repaired or replaced free of charge.

  Note: This warranty does not cover labor costs related to diagnosis, removal, or reinstallation, nor does it include any other incidental or consequential expenses.

  Before returning any product, please read and review our full Return and Warranty Requirements.

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  Warranty Exclusions

  This warranty does not cover:

• Normal wear and tear 

• Noise

• Twisted shafts

• Twisted splines

• Bent axles

• Stripped threads

• Trail-Gear is not responsible for any representations or agreements made by dealers or third parties that are not included in this warranty.

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  Warranty Claims

  All warranty claims require that the original part be returned to Road Runner Offroad for inspection before a replacement is issued. If a replacement is needed prior to inspection, the replacement must be paid for in full. A refund will be issued if the returned part is approved for warranty coverage after evaluation.

  All shipping costs—including return shipping and shipping of any replacement or repaired item—are the responsibility of the customer.

• Crash damage

• Improper application or misuse

• Failures due to lack of maintenance or negligence

• Unauthorized modifications or use of non-approved parts

• Improper installation, storage, or operation

• Intentional or willful damage

• Products not manufactured by Trail-Gear Inc. (refer to the original manufacturer)

Please note this product is an aftermarket product that is designed to fit the above mentioned vehicle(s), any mention of vehicle brand or model is only to allow you to establish the correct fitment for your vehicle, and is not indicating that the part is manufactured by the original vehicle manufacturer.