Building power is one thing—putting it to the ground reliably is another. For racers and high-performance street enthusiasts who depend on the legendary durability of the Turbo 400, JEGS offers a premium lineup of TH400 transmission parts and accessories engineered to reinforce strength, improve efficiency, and enhance long-term reliability. Whether you're refreshing a well-used unit or preparing your drivetrain for serious horsepower, these components provide everything needed to maximize performance.

Our selection of th400 transmission upgrades includes performance clutches, hardened input shafts, upgraded drums, valve bodies, servos, bearings, and other precision-engineered internals. Each component is designed to withstand intense torque loads, higher RPM ranges, and the demands of drag racing, off-road competition, or high-power street builds. By replacing worn or factory components with premium alternatives, you ensure consistent shifts, improved durability, and smoother power delivery.

For builders looking to reinforce their drivetrain even further, our lineup of th400 transmission parts offers critical components that help reduce friction, increase fluid control, and maintain optimal operating temperatures. From performance sprags to planetary assemblies, every part contributes to a stronger, more efficient transmission ready for aggressive driving.

Whether you're assembling a fresh transmission or fine-tuning an existing one, strategic th400 upgrades are essential for unlocking the full potential of your build. These components allow your Turbo 400 to handle more power, shift more consistently, and last longer—even under extreme conditions.

Give your TH400 the strength it needs to perform at its best. Upgrade with JEGS’ premium components and build a transmission that delivers dependable, race-ready performance every time you hit the throttle.