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Instead of piecing one together and hoping it all fits, get a complete third member assembly with one part number from Summit Racing Equipment!
A complete third member...
Instead of piecing one together and hoping it all fits, get a complete third member assembly with one part number from Summit Racing Equipment!
A complete third member assembly (sometimes called a center section) includes everything you need to connect your driveshaft to your rear axles. They typically include a U-joint style yoke to connect to your driveshaft, ring and pinion gears, differential carrier, and a case. They’re also available with spools for maximum traction.
Whether you need a lightweight center section for racing, a trail-tough third member assembly for off-roading, or a stock replacement for fixing up your...
Instead of piecing one together and hoping it all fits, get a complete third member assembly with one part number from Summit Racing Equipment!
A complete third member assembly (sometimes called a center section) includes everything you need to connect your driveshaft to your rear axles. They typically include a U-joint style yoke to connect to your driveshaft, ring and pinion gears, differential carrier, and a case. They’re also available with spools for maximum traction.
Whether you need a lightweight center section for racing, a trail-tough third member assembly for off-roading, or a stock replacement for fixing up your daily driver, our search tools make it easy to find the right third member assembly! For example, if you’re your looking for a Ford 9 inch third member, you can filter by case style (Ford, Chevy, Toyota, etc.), axle spline count, gear ratio, and more! With hundreds of applications available, Summit is your go-to source for complete third member assemblies.
Showing In Stock Items. Show All 115 Items.
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- V6 5.29 ARB
Part Number: TGI-304633-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
5.29 4cyl Spool
Part Number: TGI-140067-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
5.29, V6, ARB, Polished
Part Number: TGI-301471-1-KIT
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
4.88 V6 Spool 29-Spline
Part Number: TGI-304098-1-KIT
Not Yet Reviewed
Estimated Ship Date: Today
Estimated Ship Date: Today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- 4cyl 4.88 Spool
Part Number: TGI-304618-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- 4cyl 5.29 Spool
Part Number: TGI-304619-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- 4cyl 4.88 Detroit
Part Number: TGI-304620-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- 4cyl 5.29 Detroit
Part Number: TGI-304621-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- 4cyl 4.88 ARB
Part Number: TGI-304622-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- 4cyl 5.29 ARB
Part Number: TGI-304623-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- 4cyl 4.88 Grizzly
Part Number: TGI-304624-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- 4cyl 5.29 Grizzly
Part Number: TGI-304625-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- 4cyl 4.88 Zip Air Locker
Part Number: TGI-304626-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- 4cyl 5.29 Zip Air Locker
Part Number: TGI-304627-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- V6 4.88 Spool
Part Number: TGI-304628-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- V6 5.29 Spool
Part Number: TGI-304629-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- V6 4.88 Detroit
Part Number: TGI-304630-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- V6 5.29 Detroit
Part Number: TGI-304631-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- V6 4.88 ARB
Part Number: TGI-304632-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- V6 4.88 Grizzly
Part Number: TGI-304634-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
Third Member Complete Assembly, Assembled 29-Spline Super Finish 3rd Members For Toyota 8" Axles- V6 5.29 Grizzly
Part Number: TGI-304635-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
4.88, 4Cyl, ARB, Polished
Part Number: TGI-301468-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
5.29, 4Cyl, ARB, Polished
Part Number: TGI-301469-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
4.88, V6, ARB, Polished
Part Number: TGI-301470-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
4.88, Hi P, ARB, Polished
Part Number: TGI-301472-1-KIT
Not Yet Reviewed
Estimated Ship Date: Oct 24, 2025 if ordered today
Estimated Ship Date: Oct 24, 2025 if ordered today
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