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Required for fitment review to confirm compatibility.
The OBR Mercury TorqueMaster 2 lower unit is a replacement gearcase for selected 2013–2018 Mercury 225 and 250 HP Pro XS 3.0L V6 outboards. This product family is configured for a 20-inch L shaft and a 1.75:1 gear ratio. New and remanufactured versions are available under separate OBR SKUs.
Select ME-G6-25-N for the new gearcase or ME-G6-25-R for the remanufactured gearcase. Both variants cover the same listed horsepower, engine family, year range and shaft-length application.
Do not select this unit using horsepower alone. Confirm that the original gearcase is a TorqueMaster 2—not the original TorqueMaster, FleetMaster or SportMaster—and verify the engine serial number, model number, original gear ratio, shaft length and rotation before ordering.
Performance Tuned: Specifically built for the 225HP and 250HP Pro XS power curves.
TorqueMaster 2 Geometry: Features the heavy-duty skeg and housing design for improved high-speed stability.
Tournament Ready: Engineered for maximum longevity under the stresses of competitive angling and high-velocity runs.
This product family is cataloged for:
The engine serial number and model number must be reviewed before shipment. A year or horsepower match does not independently establish compatibility.
Before shipment, Mariners Warehouse should review the selected SKU against the submitted engine serial number, engine model number, original gearcase family, original gear ratio, shaft length and rotation.
The order should be held if:
Before packing:
Do not state that the unit is bench-tested, pressure-tested or water-tested unless Mariners Warehouse or OBR can document the exact process for the selected SKU.
| Specification | Mercury TorqueMaster 2 Lower Unit | 225–250 HP Pro XS | 20 Inch |
|---|---|
| Manufacturer | OBR |
| Compatible Engine Brand | Mercury |
| Product Family | ME-G6-25 |
| Gearcase Series | TorqueMaster 2 |
| Engine Family | Pro XS 3.0L V6 |
| Horsepower | 225 HP and 250 HP |
| Model Years | 2013–2018 |
| Shaft Length | 20-inch L |
| Gear Ratio | 1.75:1 |
| Rotation | Standard / right-hand; confirm by engine serial number |
| New SKU | ME-G6-25-N |
| Remanufactured SKU | ME-G6-25-R |
| Available Conditions | New and remanufactured |
| Required Fitment Data | Engine serial number and model number |
| Gear Oil | Ships without oil |
| Warranty | Two-year OBR limited warranty; terms apply |
A correct horsepower match does not guarantee that a replacement lower unit will fit. Begin by confirming that the existing gearcase is a TorqueMaster 2. The original TorqueMaster, TorqueMaster 2, FleetMaster, SportMaster and standard Mercury gearcases should not be treated as interchangeable product names.
Next, verify the shaft length. This ME-G6-25 family is specifically cataloged for a 20-inch L-shaft application. A 25-inch XL installation uses a different product family. The original gear ratio must also match the listed 1.75:1 configuration, and standard versus counter rotation must be confirmed before shipment.
Finally, choose the condition. ME-G6-25-N is the new OBR gearcase, while ME-G6-25-R is the remanufactured version. Both cover the same listed 225/250 HP Pro XS 3.0L V6 application.
Submit the complete Mercury engine serial number and model number with the order. Mariners Warehouse should review these details against the selected SKU, year range, gearcase family, shaft length, ratio and rotation before releasing the unit for shipment.
Use CTRL + F or search below to find your engine model
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The product information made it easy to confirm the correct TorqueMaster 2 lower unit configuration needed for a Mercury 250 HP Pro XS application. The 1.75:1 gear ratio, 20-inch shaft length, and low-water pickup details were clearly explained. Buyers should verify their engine year and shaft specs instead of ordering by horsepower alone.
I appreciated that the TorqueMaster 2 lower unit options were clearly distinguished from standard Fleet Master and Gen 1 gearcases. The 20-inch shaft, 1.75:1 ratio, and engine serial-number guidance made selecting the replacement unit straightforward. Confirming your water pickup design before ordering is key.
The product page clearly detailed the heavy-duty housing design and gear ratio options for 225–250 HP Pro XS V8 outboards. The 20-inch shaft unit was simple to identify, and the fitment assistance saved a lot of time prior to checkout.
The most important detail for this Mercury replacement lower unit was matching the 1.75:1 gear ratio and 20-inch drive shaft length. The page made it easy to cross-reference my engine model year and serial number. I recommend checking your prop shaft splines and pick-up inlets first.
The TorqueMaster 2 specific guidance ensured I received the exact lower unit for my 250 HP Pro XS bass boat setup. Arrived safely packaged in a heavy-duty crate. Serial-number verification with customer support prior to shipment made installation hassle-free.
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