Mercury 3.0L Lower Unit | 200 DFI, 225 & 250 HP

• Replacement-product brand: OBR Parts & Marine
• Engine application: Mercury-Mariner
• Displacement: 3.0L
• Cataloged horsepower/models: 200 DFI, 225 and 250 HP
• Conditions: New and remanufactured
• Warranty: Two-year limited OBR gearcase warranty
• Gear oil: Not included; gearcase ships dry

This product family is cataloged for selected Mercury-Mariner 3.0L applications identified as:

• 200 DFI
  
• 225 HP
  
• 250 HP
  
• 1994–2007 configurations
  
• 2008-up configurations
  
• 20-inch L shaft
  
• 25-inch XL shaft
  
• 30-inch XXL shaft
  

Fitment must be matched through the exact OBR SKU and its associated OEM reference. Model suffixes and complete engine serial ranges are not provided in the public OBR SKU descriptions reviewed.

Before ordering, provide:

• Complete engine model or serial number
  
• Existing lower-unit OEM number
  
• Model year
  
• Shaft length
  
• Gear ratio
  
• Standard or counter rotation
  
• Driveshaft spline count
  
• Existing gearcase type

Do not select this lower unit using horsepower or appearance alone.

• The 1994–2007 and 2008-up units use different SKUs and OEM references.
  
• A 20-inch unit cannot be substituted for a 25- or 30-inch configuration.
  
• Confirm standard versus counter rotation from the original gearcase or verified engine records.
  
• Confirm the existing gear ratio before ordering.
  
• Confirm the driveshaft and propeller-shaft spline configuration.
  
• Do not assume fitment to Torque Master, Torque Master 2, Sport Master or another performance gearcase.
  
• Do not assume that engine position on a twin-engine boat determines rotation.
  
• Submit the complete engine model or serial number and existing gearcase identification before purchase.

Before dispatch, the selected OBR lower-unit SKU should be checked against the engine information supplied with the order. The review should confirm the selected condition, model-year group, shaft length and OEM reference. The complete engine model or serial number should also be checked along with the original gearcase’s rotation, gear ratio and spline configuration. If the supplied information is incomplete or conflicts with the selected variant, shipment should be paused and the customer contacted for clarification.

Before release to the carrier:

• Confirm the selected new or remanufactured condition.
  
• Verify the correct 1994–2007 or 2008-up configuration.
  
• Confirm the selected 20-inch L, 25-inch XL or 30-inch XXL shaft.
  
• Match the selected OBR SKU and OEM reference.
  
• Review the customer’s complete engine model or serial number.
  
• Confirm the required standard or counter rotation.
  
• Confirm the original gear ratio and spline configuration.
  
• Inspect the unit for visible handling or storage damage.
  
• Confirm that the product and carton labels match the order.
  
• Secure the driveshaft, propeller shaft, skeg and housing against movement.
  
• Photograph the unit and packaging before the carton is sealed.
  
• Include any approved instructions, warranty paperwork and core-return documents that apply to the selected SKU.
  

Important Gear-Oil Notice: OBR states that its gearcase assemblies are shipped without gear oil. The customer must fill the lower unit with the engine manufacturer’s specified marine gear lubricant before installation or operation. The installer should also verify the lubricant level, shift adjustment and installation alignment before the engine is operated. OBR’s required lower-unit break-in procedure should be followed during the first 10 operating hours.

When the shipment arrives, the customer should inspect the carton for punctures, crushing, water exposure or impact damage before installation. Any visible damage should be photographed immediately, and the carton, labels and packing materials should be retained while Mariners Warehouse is contacted. The unit should not be installed, filled or operated until any shipping-damage concern has been reviewed