TOYOTA 90179-22029 Differential Drive Pinion Nut

The genuine Toyota differential drive pinion nut (part number 90179-22029) is a critical fastener for the rear drive axle differential. Its function is to securely fasten and maintain the precise positioning of the drive pinion shaft and the preload of the pinion bearings within the differential carrier. The proper tightening torque of the pinion nut directly dictates the ring and pinion gear backlash and bearing preload, which are essential for quiet, vibration-free differential operation and uniform gear tooth load distribution.

Due to its design, replacing the retaining nut is strictly recommended during any differential servicing (such as pinion oil seal or bearing replacement), as the staking flange loses its original locking capability and structural integrity once opened.

Technical Specifications and References

• Manufacturer: Toyota (Genuine OEM)
• Part Number: 90179-22029
• Replacement / Alternative OEM Reference: 90179A0002
• Fitting Position: Rear differential drive pinion
• Intended Use: Drive pinion shaft retaining and preload nut

Compatible Vehicles

• Toyota 4Runner (N280) 2.7 [2009 - 2011] (TRN280, 2TRFE)
• Toyota 4Runner (N280) 4.0 [2009 - ...] (GRN280, 1GRFE)
• Toyota Coaster (B40/B50) [2008 - ...]
• Toyota Coaster (B60/B70) [2017 - ...]
• Toyota Dyna / Toyoace (U300/U400/Y200) [2006 - ...]
• Toyota Dyna / Toyoace (U600/U700) [2011 - ...]
• Toyota FJ Cruiser (GSJ1) 4.0 [2009 - 2014] (GSJ10, 1GRFE)
• Toyota FJ Cruiser (GSJ15) 4.0 [2009 - ...] (GSJ15, 1GRFE)
• Toyota Fortuner (GGN155) 2.8 D-4D [2015 - 2020] (GUN155, 1GDFTV)
• Toyota Fortuner (GGN155) 2.7 [2015 - ...] (TGN156, 2TRFE)
• Toyota Fortuner (GGN155) 4.0 [2015 - ...] (GGN155, 1GRFE)
• Toyota Fortuner (GUN156) 2.8 D-4D [2020 - ...] (GUN156, 1GDFTV)
• Toyota Granace (GDH303) 2.8 D-4D [2019 - ...] (GDH303, 1GDFTV)
• Toyota Hiace (H300) 2.8 D-4D [2019 - ...] (GDH322, 1GDFTV)
• Toyota Hilux (N10/N20/N30) 2.7 [2015 - 2020] (TGN121, 2TRFE)
• Toyota Hilux (N10/N20/N30) 3.0 D-4D [2015 - 2016] (KUN126, 1KDFTV)
• Toyota Hilux (N10/N20/N30) 4.0 [2015 - ...] (GGN120, 1GRFE)
• Toyota Hilux (N10/N20/N30) 2.8 D-4D [2015 - ...] (GUN125, 1GDFTV)
• Toyota Hilux (N120/N130) 2.8 D-4D [2015 - ...] (GUN120, 1GDFTV)
• Toyota Hilux (N120/N130) 2.7 [2020 - ...] (TGN121, 2TRFE)
• Toyota Land Cruiser 100 (J100) 4.2 TD [2006 - ...] (HDJ100, 1HDFTE)
• Toyota Land Cruiser 100 (J100) 4.7 [2006 - ...] (UZJ100, 2UZFE)
• Toyota Land Cruiser 100 (J100) 4.5 [2006 - ...] (FZJ100, 1FZFE)
• Toyota Land Cruiser 200 (J200) 4.7 [2007 - 2012] (UZJ200, 2UZFE)
• Toyota Land Cruiser 200 (J200) 4.6 [2007 - ...] (URJ200, 1URFE)
• Toyota Land Cruiser 200 (J200) 4.0 [2007 - ...] (GRJ200, 1GRFE)
• Toyota Land Cruiser 70 (J70) 4.5 [2006 - 2009] (FZJ70, 1FZF)
• Toyota Land Cruiser 70 (J70) 4.0 [2007 - 2016] (GRJ71, 1GRFE)
• Toyota Land Cruiser 80 (J80) 4.5 [2006 - ...] (FZJ80, 1FZF)
• Toyota Land Cruiser Prado (J150) 2.7 [2009 - 2013] (TRJ150, 2TRFE)
• Toyota Land Cruiser Prado (J150) 3.0 D-4D [2009 - 2013] (KDJ150, 1KDFTV)
• Toyota Land Cruiser Prado (J150) 4.0 [2009 - 2015] (GRJ150, 1GRFE)
• Toyota Land Cruiser Prado (J150) 2.8 D-4D [2015 - ...] (GDJ150, 1GDFTV)
• Toyota Lexus GX (J150) 4.0 [2009 - 2017] (GRJ158, 1GRFE)
• Toyota Lexus GX (J150) 4.6 [2009 - ...] (URJ150, 1URFE)
• Toyota Lexus LX (J100) 4.7 [2006 - ...] (UZJ100, 2UZFE)
• Toyota Lexus LX (J200) 4.6 [2007 - ...] (URJ201, 1URFE)
• Toyota Quick Deli/Urban Sup (BU28) [2007 - ...]
• Toyota Quick Delivery 200 (XZU282) [2012 - ...]
• Toyota Sequoia (UCK6) [2007 - ...]
• Toyota Sequoia (USK6) [2008 - 2016]
• Toyota Tacoma (GRN2) 4.0 [2015 - ...] (GRN305, 1GRFE)
• Toyota Tundra (GSK5) [2006 - ...]