Trail-Gear™ 29-Spline Fully Built 3rd Member

Fully built 29-Spline 3rd members using all new parts and ready to drop into your axle.  Third members feature top quality high-strength 29-spline ring & pinion gears and your choice of lockers.  V6 units feature larger OEM style V6 gear sets with longer pinion gear.  Each unit is setup with solid pinion spacers for long gear life.  Trail-Safe 29-spline pinion seal provided at no extra charge.  Quadruple-drilled flange covers most Pickup/4Runner and Tacoma driveshaft patterns.

 

Housing	Ratio	Spool	Detroit	ARB	Grizzly	Zip
4Cyl	4.88	304113-1-KIT	304115-1-KIT	304117-1-KIT	304119-1-KIT	304121-1-KIT
4Cyl	5.29	304114-1-KIT	304116-1-KIT	304118-1-KIT	304120-1-KIT	304122-1-KIT
V6	4.88	304098-1-KIT	304100-1-KIT	304102-1-KIT	304104-1-KIT	304106-1-KIT
V6	5.29	304099-1-KIT	304101-1-KIT	304103-1-KIT	304105-1-KIT	304107-1-KIT
High Pinion	4.88	N/A	304511-1-KIT	304513-1-KIT	304515-1-KIT	304517-1-KIT
High Pinion	5.29	N/A	304512-1-KIT	304514-1-KIT	304516-1-KIT	304518-1-KIT

Application Notes:  Spool lockers should only be used in rear applications.  Spools will be harder on axles than a selectable or automatic locker.

All new 3rd members require a break-in period to prevent damage from overheating. Any overloading or overheating during this periods can cause the gear oil to break down resulting in ring & pinion failure.

• After installation, drive lightly for 20-30 minutes and then allow the diff to cool for at least two hours.

• Avoid heavy throttle use during the first 500 miles.

• Do not tow a trailer during the first 500 miles.

• Change oil after 500 miles to remove any particles suspended in the oil.

This may seem unnecessary, but it is very easy to damage the differential by loading it before the gear set is completely run in. New ring & pinion gears create excess heat when they are new. This excess heat can damage the heat treatment of the gears.

Specifications:

• Fully built 29-Spline 3rd members using all new parts – no used housings or internal components.
• 29-Spline Ring & Pinion made from tool-grade 8620 steel and heat-treated for maximum strength and wear resistance.
• Available in 4.88 & 5.29 ratios for both 4-cyl & V6 applications.
• Your choice of spool, Detroit, ARB, Grizzly, or Zip lockers.
• Solid pinion spacers.
• Trail-Safe 29-Spline pinion seal provided at no extra charge.
• Quadruple-drilled flange covers most Pickup/4Runner and Tacoma driveshaft patterns.

Application Data:

• 1979-1995 Toyota Pickup
• 1985-1996 Toyota 4Runner