Third Member Assembly
A third member assembly, also known as a differential third member, is a critical component in a vehicle's drivetrain system, specifically in rear-wheel drive and four-wheel drive vehicles. It houses the differential, which is responsible for distributing power from the transmission to the rear wheels while allowing them to rotate at different speeds during turns. The third member assembly consists of the differential itself, along with various gears, bearings, and other components necessary for power distribution and smooth operation. It's an essential element that influences a vehicle's traction, stability, and overall performance.
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Selecting the correct third member assembly is essential to ensure the optimal performance and functionality of your vehicle. When choosing a third member assembly, you need to consider several factors, including the vehicle's make, model, rear axle type, gear ratio, and intended usage. The 9 inch center section is a popular choice known for its durability and strength, making it suitable for various high-performance applications. Depending on your vehicle's needs, you may also need to select a specific gear ratio to achieve the desired balance between acceleration and top speed.
At JEGS, we offer a range of third member assemblies designed to meet different performance and application requirements. Our selection includes third member assemblies with various gear ratios and options, such as the 9 inch center section. We understand the importance of a reliable drivetrain system, and that's why our third member assemblies are crafted using high-quality materials and precision engineering. Whether you're looking to upgrade your vehicle's differential for enhanced performance or need a replacement for a worn-out assembly, JEGS has the right solutions to help you achieve the performance and drivability you're looking for.
Speedmaster 1-215-011-11 Ford 9-in. LSD HD Complete Third Member Assembly, 35-Spline, 3.70 Ratio
Strange Engineering HD Pro case tapered bearing pinion support / Fits HD Pro cases only
Strange Engineering Ultra Case with 35-Spline Steel Spool 3.25 Ratio Standard Gear
Trail Gear 27-Spline 3rd Member Assembly Fits Select 1979-1995 Toyota Truck/4Runner
Strange Engineering 3.812-in L/W Ultra case/ball brg. supp. package for small stem pinion
Strange Engineering Strange Pro Ford 9-in N case/LW steel spool/sm stem pro gear/coupler
Trail Gear 301716-1-KIT Fully Built 3rd Member, 5.29 4 Cylinder Spool Polished
Speedmaster 1-214-005-02 Ford 9 in. 4.00 in. Long Nose Aluminum Case Drop Out w/ Pinion Support
Speedmaster 1-215-014-11 Ford 9 in. 4in. 40 Spline Spool HD Pro Third Member Assembly [5.43:1]
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Speedmaster 1-215-014-07 Ford 9 in. 4in. 40 Spline Spool HD Pro Third Member Assembly [4.30:1]
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Trail Gear 301954-1-KIT Fully Built 3rd Member, 5.29 High Pinion Grizzly Polished
Trail Gear 304114-1-KIT Fully Built 3rd Member, 5.29 4 Cylinder Spool 29-Spline
Speedmaster 1-215-005-08 Ford 9 in. 35 Spline LSD TorqueWorm HD Case Third Member Assembly 4.56:1
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