Drill down to the horsepower, liters or outdrive model, serial number range and component section to get an online inventory of original and aftermarket Mercruiser boat parts. We carry parts for Mercruiser inboard, Mercruiser stern drive and Mercruiser outdrive. Choosing the Correct Parts.
- Inboard & Sterndrive Engine Manuals. You may also visit the Boat Motor Manuals section of our site to obtain a service manual. For Mercruiser (120 HP / 2.5l140.
- MarineEngine.com does not offer troubleshooting assistance or repair advice by email or by telephone. You are invited to join our public Boat Repair Forum to seek assistance from other members. You may also visit the Boat Motor Manuals section of our site to obtain a service manual.
Hints and tips to make your day on the water more enjoyable.
Boating BasicsLearn how to maintain and care for your Mercury outboard engine.
Outboard CareLearn how to maintain and care for your MerCruiser sterndrive or inboard engine.
120 Hp Mercruiser Inboard Service Manual Pdf
Sterndrive and Inboard CareLearn how to maintain and care for your Mercury diesel engine.
Mercruiser 120 Specs
Diesel Engine CareLearn about genuine Mercury parts and accessories.
Parts & AccessoriesLearn how propellers can affect the performance of your boat.
120 Hp Mercruiser Inboard Service Manual Diagram
PropellersLearn how to use Mercury Joystick Piloting.
Joystick PilotingLearn about Mercury Marine's warranty coverage and Product Protection plans.
Warranty and Mercury Product ProtectionLearn how to maintain your Mercury Outboard or MerCruiser engine to prevent corrosion.
Corrosion ProtectionLearn how to maintain your engine's electrical system and battery.
ElectricalLearn how to maintain your boat's fuel and fuel systems.
Fuel & Fuel Care
Mercruiser 120 Engine For Sale
Learn about Mercury gauges or displays.
Gauges and DisplaysLearn the importance of oils and lubricants in basic engine maintenance.
Oils & LubricantsLearn how to take care of your engine during the off-season.
Storage and Winterization