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3406 Marine Engines

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  • Oil Cooler and Lines Kit
    Availability
    Brand
    Cat
    Compare
  • Fuel System Kit
    Availability
    Brand
    Cat
    Compare
  • Oil Cooler and Lines Kit
    Availability
    Brand
    Cat
    • Engine Model
      3406E
    • Engine Arrangement
      234-9228, 255-8712
    • Engine Serial Number Prefix
      9WR1-UP
    • Kit Contains
      Gaskets, seals, 0
    • Engine Model
      3406E
    • Engine Arrangement
      234-9228, 255-8712
    Compare
  • Aftercooler and Lines Kit
    Availability
    Brand
    Cat
    • Engine Model
      3406E
    • Engine Arrangement
      177-4178, 177-4179, 234-9228, 177-4177, 177-4180, 131-8300, 255-8712
    • Engine Serial Number Prefix
      9WR1-UP
    • Kit Contains
      0, Gaskets, seals
    • Engine Model
      3406E
    • Engine Arrangement
      177-4178, 177-4179, 234-9228, 177-4177, 177-4180, 131-8300, 255-8712
    Compare
  • Front Structure Kit
    Availability
    Brand
    Cat
    • Engine Model
      3406E
    • Engine Arrangement
      177-4180, 131-8300, 255-8712, 177-4177, 234-9228, 177-4179, 177-4178
    • Engine Serial Number Prefix
      9WR1-UP
    • Kit Contains
      Gaskets, seals, washers, 0
    • Engine Model
      3406E
    • Engine Arrangement
      177-4180, 131-8300, 255-8712, 177-4177, 234-9228, 177-4179, 177-4178
    Compare
  • Oil Cooler and Lines Kit
    Availability
    Brand
    Cat
    • Engine Model
      3406C
    • Engine Arrangement
      238-5345, 4P-1987, 238-5342, 238-5349, 177-8873, 177-8877, 177-8876, 177-8874, 177-8878, 177-8880, 238-5343, 177-8879, 238-5347
    • Engine Serial Number Prefix
      4061-UP, 1SS1-UP, 2WB1-UP
    • Kit Contains
      Gaskets, seals, 0
    • Engine Model
      3406C
    • Engine Arrangement
      238-5345, 4P-1987, 238-5342, 238-5349, 177-8873, 177-8877, 177-8876, 177-8874, 177-8878, 177-8880, 238-5343, 177-8879, 238-5347
    Compare
  • Aftercooler and Lines Kit
    Availability
    Brand
    Cat
    • Engine Model
      3406C, 3406B
    • Engine Arrangement
      177-8867, 110-9524, 238-5347, 177-8877, 4W-3801, 177-8876, 110-9698, 177-8871, 177-8873, 238-5349, 110-9525, 177-8865, 177-8869, 4P-1987, 238-5342, 177-8879, 4W-3800, 177-8880, 7W-7264, 178-4978, 177-8878, 238-5343, 177-8874, 238-5345
    • Engine Serial Number Prefix
      4TB1-UP, 1SS1-UP, 4061-UP, 2WB1-UP
    • Kit Contains
      Gaskets, seals, 0
    • Engine Model
      3406C, 3406B
    • Engine Arrangement
      177-8867, 110-9524, 238-5347, 177-8877, 4W-3801, 177-8876, 110-9698, 177-8871, 177-8873, 238-5349, 110-9525, 177-8865, 177-8869, 4P-1987, 238-5342, 177-8879, 4W-3800, 177-8880, 7W-7264, 178-4978, 177-8878, 238-5343, 177-8874, 238-5345
    Compare
  • Single Cylinder Head Kit
    Availability
    Brand
    Cat
    • Engine Model
      3406C, 3406B
    • Engine Arrangement
      110-9525, 238-5345, 238-5349, 7W-7264, 177-8880, 4W-3800, 177-8879, 238-5342, 4P-1987, 177-8871, 177-8873, 238-5343, 177-8878, 178-4978, 177-8869, 177-8865, 177-8874, 110-9524, 177-8876, 238-5347, 177-8877, 177-8867, 4W-3801, 110-9698
    • Engine Serial Number Prefix
      2WB1-UP, 4061-UP, 4TB1-UP, 1SS1-UP
    • Kit Contains
      Gaskets, seals, 0
    • Engine Model
      3406C, 3406B
    • Engine Arrangement
      110-9525, 238-5345, 238-5349, 7W-7264, 177-8880, 4W-3800, 177-8879, 238-5342, 4P-1987, 177-8871, 177-8873, 238-5343, 177-8878, 178-4978, 177-8869, 177-8865, 177-8874, 110-9524, 177-8876, 238-5347, 177-8877, 177-8867, 4W-3801, 110-9698
    Compare
  • Oil Cooler and Lines Kit
    Availability
    Brand
    Cat
    • Engine Model
      3406C, 3406B
    • Engine Arrangement
      4W-3800, 7W-7264, 177-8869, 177-8865, 177-8871, 178-4978, 110-9525, 4W-3801, 177-8867, 110-9698, 110-9524
    • Engine Serial Number Prefix
      4TB1-UP
    • Kit Contains
      Gaskets, seals, 0
    • Engine Model
      3406C, 3406B
    • Engine Arrangement
      4W-3800, 7W-7264, 177-8869, 177-8865, 177-8871, 178-4978, 110-9525, 4W-3801, 177-8867, 110-9698, 110-9524
    Compare
  • Rear Structure Kit
    Availability
    Brand
    Cat
    • Engine Model
      3406E
    • Engine Arrangement
      131-8300, 177-4177, 255-8712, 234-9228, 177-4179, 177-4180, 177-4178
    • Engine Serial Number Prefix
      9WR1-UP
    • Kit Contains
      Gaskets, seals, 0
    • Engine Model
      3406E
    • Engine Arrangement
      131-8300, 177-4177, 255-8712, 234-9228, 177-4179, 177-4180, 177-4178
    Compare
  • Central and Lower Kit
    Availability
    Brand
    Cat
    • Engine Model
      3406E
    • Engine Arrangement
      177-4177, 131-8300, 177-4179, 177-4180, 177-4178
    • Engine Serial Number Prefix
      9WR1-UP
    • Kit Contains
      0, Dust cap, plug, fastener, gaskets, seals,
    • Engine Model
      3406E
    • Engine Arrangement
      177-4177, 131-8300, 177-4179, 177-4180, 177-4178
    Compare
  • Marine Bundled Repair Solution, 3406 Engine Overhaul
    Availability
    Brand
    Cat
    • Engine Model
      3406B, 3406C
    • Engine Arrangement
      4W-3801, 177-8867, 110-9524, 110-9698, 110-9525, 177-8865, 177-8869, 178-4978, 177-8871, 7W-7264, 4W-3800
    • Engine Serial Number Prefix
      4TB1-UP
    • Engine Model
      3406B, 3406C
    • Engine Arrangement
      4W-3801, 177-8867, 110-9524, 110-9698, 110-9525, 177-8865, 177-8869, 178-4978, 177-8871, 7W-7264, 4W-3800
    Compare
View local pricing and inventory as well as place orders online.
  • Products
  • Options
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WE HAVE ENGINEERED IT FOR PERFORMANCE.

YOU CUSTOMIZE IT TO YOUR NEEDS.

Keep your vessel in business; overhaul it with our new 3406 Cat® Marine Bundled Repair Solution.

From Foundational to Optimal levels, we are offering you flexible repair options for your major overhaul. All Cat parts are manufactured to precise specifications and engineered for reliable, high-quality overhauls.

You asked for improved pricing and a longer warranty – we listened. Delivered at a value price, your Bundled Repair Solution is backed by our one-year parts warranty, with available extended coverage up to three years.

Additional pricing and coverage benefits are available based on the level you choose, and apply even if you do the work. Due to variations based on region, see your local Cat dealer for financing options and customized promotions available to you. Rely on your Cat dealer team to deliver professional advice, expert service and unmatched support across any water, on any coast.

  • It’s built on expertise
  • Built for easy parts selection
  • Built for business on the water
  • Built for value
  • Built to restore
  • Built to last
  • Built to be customized
  • Built by the name you trust
  • And most importantly, built for you

For more information on overhaul solutions, visit catmarinesupport.com

FOUNDATIONAL LEVEL KIT

Containing all the basics for your best engine overhaul, our Foundational Level Kit is designed for convenience – prepackaged, ordered with a single part number and delivered in a single box. Our Customize Your Own Foundational level allows you to order to your specific engine needs.

ADVANCED LEVEL KIT

Keep all the features from our Foundational Level, but with our Advanced Level, you add parts specific to your engine needs. Customize your overhaul – and increase your value.

OPTIMAL LEVEL KIT

Bring your engine to original factory specifications and performance. This is our most comprehensive overhaul solution – and our best value, including all the features and benefits from our Foundational Level.

For more information on overhaul solutions, visit catmarinesupport.com