If you’re in the market for a solid manual transmission, the Zumbrota Drivetrain Manual Transmission is worth a close look. These units are rebuilt with a level of care that’s hard to find these days. They go through a three-step inspection process that really digs deep into the guts of the transmission. First off, they check for any cracks or wear in the case that could cause issues down the line. Then, they measure all the components to make sure they’re hitting those OEM specs. Finally, after everything’s put together, there’s a thorough post-build inspection to ensure it meets Zumbrota’s high standards.

Now, let’s talk about what makes this transmission stand out. Each unit is put through some serious testing—shaft straightness, gear wear, and synchronizer functionality are all checked to ensure they’re spot on. The attention to detail here is impressive, and it really shows in the performance on the road. Plus, they use a hydro-blast rinse and sandblasting for both the internal and external parts, followed by a deep cleaning process that’s proprietary to Zumbrota. This means you’re getting a transmission that’s not just rebuilt, but cleaned to a level that rivals new.

• Pre-inspection to catch any potential issues like case cracks or excessive wear.
• 100% inspection of internal parts, including checks on gear wear and mainshaft straightness.
• Second inspection during the reman process to ensure all parts meet OEM specifications.
• Final post-build inspection to guarantee it’s built to strict quality standards.
• Three quality inspections throughout the remanufacturing process.

As for the specs, here’s what you need to know:

• Case Material: Aluminum
• Fifth Gear Ratio: 0.811
• First Gear Ratio: 5.133
• Fourth Gear Ratio: 1.00
• Integral Bell Housing: Yes
• Pre-Filled Oil: No
• Reverse First Gear Ratio: 4.491
• Second Gear Ratio: 2.631
• Shifter Included: No
• Sixth Gear Ratio: 0.719
• Third Gear Ratio: 1.536
• Transmission Fluid Capacity: 2.86 quarts
• Transmission Fluid Included: No
• Transmission Fluid Type: ATF +4
• Transmission Speeds: 6 Speed

And here’s the fitment info: this transmission is designed for the Jeep Gladiator (2020-2022) and the Jeep Wrangler (2018-2022). So if you’re rocking one of those models with a 3.6L V6 and 4WD, this is your go-to option for a reliable manual transmission.