Transmission Rebuild Kits

Transmission Rebuild Kits: everything you need to open the case once and close it right

A transmission rebuild kit gives you the wear parts to refresh a gearbox in one shot instead of chasing individual pieces. Depending on the application, that means the seals, gaskets, clutches and hardware that go back in when you split the case, so a leaking, slipping or high-mileage unit comes back together sealed and shifting cleanly. When you have the transmission out, doing it with a matched kit is cheaper and cleaner than sourcing parts one at a time. That is exactly what these transmission rebuild kits are built to do.

What ThreePiece stocks

This category currently carries 3 kits from 3 brands: BD Diesel, QuadBoss and Cometic Gasket. Prices currently run from $118 to $1,581 for what is in stock right now, not a locked-in promise. Coverage spans very different machines: Harley-Davidson FL Twin Cam models (2007-16), the Can-Am Outlander, and the Dodge 68RFE. Model years across these kits fall between 2007 and 2019.

How to choose

The three kits here sit at different jobs, so pick by depth of rebuild:

  • The Cometic FL Twin Cam kit at $118 is a gasket-focused rebuild kit with an oil pan gasket - the choice when you are resealing a Harley transmission rather than replacing internals.
  • The QuadBoss Can-Am Outlander 1000R DPS kit at about $246 sits in the middle for an ATV drivetrain refresh.
  • The BD Diesel Built-It Stage 4 Master kit for the Dodge 68RFE at $1,581 is the deepest option here - a master-level rebuild for a heavy diesel automatic.

In short: match the kit to your exact make, model and year first, then decide whether you need a reseal or a full internal rebuild. The price spread reflects that gap, not a quality ranking.

What else you need with it

A transmission job rarely stands alone. Look at Clutch Components and Clutch Rebuild Kits while the drivetrain is apart, and check Flywheels and Shift Components for worn linkage. If you are servicing the rest of the driveline, Differential Components and Sprockets live in the same section. Browse everything under the Drivetrain parent to see the full range.

Fitment help and ordering

Because these kits are application-specific, confirm your make, model and year before ordering. If you are unsure, our team can help by phone at 813-535-5801, or reach us through contact us. All orders ship with free shipping, and Affirm and Katapult financing is available at checkout on financing.

Transmission Rebuild Kits: everything you need to open the case once and close it right

A transmission rebuild kit gives you the wear parts to refresh a gearbox in one shot instead of chasing individual pieces. Depending on the application, that means the seals, gaskets, clutches and hardware that go back in when you split the case, so a leaking, slipping or high-mileage unit comes back together sealed and shifting cleanly. When you have the transmission out, doing it with a matched kit is cheaper and cleaner than sourcing parts one at a time. That is exactly what these transmission rebuild kits are built to do.

What ThreePiece stocks

This category currently carries 3 kits from 3 brands: BD Diesel, QuadBoss and Cometic Gasket. Prices currently run from $118 to $1,581 for what is in stock right now, not a locked-in promise. Coverage spans very different machines: Harley-Davidson FL Twin Cam models (2007-16), the Can-Am Outlander, and the Dodge 68RFE. Model years across these kits fall between 2007 and 2019.

How to choose

The three kits here sit at different jobs, so pick by depth of rebuild:

  • The Cometic FL Twin Cam kit at $118 is a gasket-focused rebuild kit with an oil pan gasket - the choice when you are resealing a Harley transmission rather than replacing internals.
  • The QuadBoss Can-Am Outlander 1000R DPS kit at about $246 sits in the middle for an ATV drivetrain refresh.
  • The BD Diesel Built-It Stage 4 Master kit for the Dodge 68RFE at $1,581 is the deepest option here - a master-level rebuild for a heavy diesel automatic.

In short: match the kit to your exact make, model and year first, then decide whether you need a reseal or a full internal rebuild. The price spread reflects that gap, not a quality ranking.

What else you need with it

A transmission job rarely stands alone. Look at Clutch Components and Clutch Rebuild Kits while the drivetrain is apart, and check Flywheels and Shift Components for worn linkage. If you are servicing the rest of the driveline, Differential Components and Sprockets live in the same section. Browse everything under the Drivetrain parent to see the full range.

Fitment help and ordering

Because these kits are application-specific, confirm your make, model and year before ordering. If you are unsure, our team can help by phone at 813-535-5801, or reach us through contact us. All orders ship with free shipping, and Affirm and Katapult financing is available at checkout on financing.