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Mercruiser Boat Inboard Engine HM9XM04.5CAT | 250HP 4.5L



Boat part number 1101262 is a new 2017, 4.5L, 250 HP inboard engine from Mercruiser, model number HM9XM04.5CAT .

Designing a V-6 block solely for marine use allows Mercury to build the 4.5L with the ultimate protection system, using cast-iron componentry where the engine intersects with seawater, and using corrosion-resistant aluminum and composites everywhere else.

Compatible with the following stern drives:

  • Bravo One
  • Bravo Three
  • Bravo Two


  • Part Manufacturer: Mercury Mercruiser
  • Model Number: HM9XM04.5CAT
  • HP: 250
  • Type: Inboard Engine
  • Year: 2018
  • Color: Black
  • Engine Type: V6
  • Full Throttle RPM: 4800-5200
  • Displacement: 4.5L (275 CID)
  • Bore x Stroke: 4.0 x 3.6″ (102 x 92 MM)
  • Fuel Delivery: Multi-Point Electronic (MPI)
  • Fuel Type: Regular 87 Octane
  • Ignition: SmartCraft PCM 112 Digital
  • Controls: SmartCraft
  • Air Induction: Scroll Intake Manifold
  • Exhaust: Through Prop
  • Engine Guardian System: SmartCraft

All sales on this item are final.

Because of the size and/or commodity of this item, we must ship via truckline. The shown freight cost is for the LOWER 48 STATES ONLY and shipped to a business at a commercial address WITH LOADING DOCK. We can ship to your residence, or possibly a nearby terminal. We can also offer international shipping. Please call or email for a shipping quote if needed.


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