Starter -Mercury Outboard 40 45 50 HP 50-73521

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Part Replacement List
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Product Info

Applications List

Part Replacement List

Policy Information

Reviews

Overview

Electrical Aftermarket Parts for Virtually Any Vehicle
DB Electrical is a leading source for rotating electrical products for autos, trucks, motorcycles, ATVs, farm tractors and many other vehicles. We stand behind every product with our total-confidence 1-year warranty. Yes, you have a full year to make sure your order meets your expectations.

Item Number: 410-21047

100% Brand New Aftermarket Part From DB Electrical

Product Specs

Item Condition	Aftermarket Part
Unit Type	Starter
Voltage	12
Rotation	CCW
Teeth	10
Dimension	Replacement Unit:, Gear OD: 1.213in / 30.8mm, Mtg. Ear Hole: 1/4-20 Threaded, Note: 4.119" / 104.5mm Field Housing Length,
Starter Type	PMDD
Fits	Mercury Marine 40, 45, 50HP O/B Motor Housing Length 4.119 INCHES

Applications List

Select Make & Type

MAKE	TYPE	MODEL	YEAR	ENGINE
MARINER	Engines - Marine Outboard	40ELHPTO Magnum	1990	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELHPTO Magnum	1991	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELHPTO Magnum	1992	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELHPTO Magnum	1993	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELHPTO Magnum	1994	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELHPTO Magnum	1995	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELHPTO Magnum	1996	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELHPTO	1989	36.1ci - 40 HP
MARINER	Engines - Marine Outboard	40ELHPTO	1997	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELO Magnum	1991	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELO Magnum	1992	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELO Magnum	1993	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELO Magnum	1994	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELO Magnum	1995	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELO Magnum	1996	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELO	1990	36.1ci - 40 HP
MARINER	Engines - Marine Outboard	40ELO	1997	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELPTO Magnum	1990	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELPTO Magnum	1991	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELPTO Magnum	1992	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELPTO Magnum	1993	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELPTO Magnum	1994	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELPTO Magnum	1995	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELPTO Magnum	1996	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40ELPTO	1989	36.1ci - 40 HP
MARINER	Engines - Marine Outboard	40ELPTO	1997	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40EO Jet 30	1995	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40EO Jet 30	1996	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40EO Jet 30	1997	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40EO Magnum	1992	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40EO Magnum	1993	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40EO Magnum	1994	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40EO Magnum	1995	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40EO Magnum	1996	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	40EO	1990	36.1ci - 40 HP
MARINER	Engines - Marine Outboard	40EO	1997	43.9ci - 40 HP
MARINER	Engines - Marine Outboard	45ELHO	1986	43.9ci - 45 HP
MARINER	Engines - Marine Outboard	45ELHO	1987	43.9ci - 45 HP
MARINER	Engines - Marine Outboard	45ELHO	1988	43.9ci - 45 HP
MARINER	Engines - Marine Outboard	45ELHPTO	1988	43.9ci - 45 HP
MARINER	Engines - Marine Outboard	45ELO	1986	43.9ci - 45 HP
MARINER	Engines - Marine Outboard	45ELO	1987	43.9ci - 45 HP
MARINER	Engines - Marine Outboard	45ELO	1988	43.9ci - 45 HP
MARINER	Engines - Marine Outboard	45ELO	1989	43.9ci - 45 HP
MARINER	Engines - Marine Outboard	45ELPTO	1986	43.9ci - 45 HP
MARINER	Engines - Marine Outboard	45ELPTO	1987	43.9ci - 45 HP
MARINER	Engines - Marine Outboard	45ELPTO	1988	43.9ci - 45 HP
MARINER	Engines - Marine Outboard	45ELPTO	1989	43.9ci - 45 HP
MARINER	Engines - Marine Outboard	50E	1980	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50E	1981	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50E	1982	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50E	1983	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50E	1984	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50EL	1980	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50EL	1981	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50EL	1982	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50EL	1983	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50EL	1984	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50EL	1985	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50ELH	1980	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50ELH	1981	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50ELH	1982	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50ELH	1983	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50ELH	1984	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50ELH	1985	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50ELO	1986	49.8ci - 50 HP
MARINER	Engines - Marine Outboard	50ELPT	1980	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50ELPT	1981	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50ELPT	1982	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50ELPT	1983	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50ELPT	1984	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50ELPT	1985	43.9ci - 50 HP
MARINER	Engines - Marine Outboard	50ELPTO	1986	49.8ci - 50 HP
MERCURY MARINE	Engines - 2-Stroke Carb - By SN	30.0HP / Jet - SN 0C159200 Thru 0G589999	All	30.0HP, Jet
MERCURY MARINE	Engines - 2-Stroke Carb - By SN	40, 400 / 4cyl - SN 0C159200 & Up	All	4-Cylinder
MERCURY MARINE	Engines - 2-Stroke Carb - By SN	45, 450 - SN 0B110789 & Up	All	4 Cylinder
MERCURY MARINE	Engines - 2-Stroke Carb - By SN	45, 450 - SN 5531630 Thru 0B110788	All	4 Cylinder
MERCURY MARINE	Engines - 2-Stroke Carb - By SN	45, 450 - SN 8063985 & Up	All	4 Cylinder
MERCURY MARINE	Engines - 2-Stroke Carb - By SN	50, 500 - SN - 5531630 & Up	All	2-Stroke
MERCURY MARINE	Models - By Engine Size	40ELHPTO 2-Stroke	1989	40HP
MERCURY MARINE	Models - By Engine Size	40ELHPTO 2-Stroke	1990	40HP
MERCURY MARINE	Models - By Engine Size	40ELHPTO 2-Stroke	1991	40HP
MERCURY MARINE	Models - By Engine Size	40ELHPTO 2-Stroke	1992	40HP
MERCURY MARINE	Models - By Engine Size	40ELHPTO 2-Stroke	1993	40HP
MERCURY MARINE	Models - By Engine Size	40ELHPTO 2-Stroke	1994	40HP
MERCURY MARINE	Models - By Engine Size	40ELHPTO 2-Stroke	1995	40HP
MERCURY MARINE	Models - By Engine Size	40ELHPTO 2-Stroke	1996	40HP
MERCURY MARINE	Models - By Engine Size	40ELHPTO 2-Stroke	1997	40HP
MERCURY MARINE	Models - By Engine Size	40ELO 2-Stroke	1989	40HP
MERCURY MARINE	Models - By Engine Size	40ELO 2-Stroke	1990	40HP
MERCURY MARINE	Models - By Engine Size	40ELO 2-Stroke	1991	40HP
MERCURY MARINE	Models - By Engine Size	40ELO 2-Stroke	1992	40HP
MERCURY MARINE	Models - By Engine Size	40ELO 2-Stroke	1993	40HP
MERCURY MARINE	Models - By Engine Size	40ELO 2-Stroke	1994	40HP
MERCURY MARINE	Models - By Engine Size	40ELO 2-Stroke	1995	40HP
MERCURY MARINE	Models - By Engine Size	40ELO 2-Stroke	1996	40HP
MERCURY MARINE	Models - By Engine Size	40ELO 2-Stroke	1997	40HP
MERCURY MARINE	Models - By Engine Size	40ELPTO 2-Stroke	1989	40HP
MERCURY MARINE	Models - By Engine Size	40ELPTO 2-Stroke	1990	40HP
MERCURY MARINE	Models - By Engine Size	40ELPTO 2-Stroke	1991	40HP
MERCURY MARINE	Models - By Engine Size	40ELPTO 2-Stroke	1992	40HP
MERCURY MARINE	Models - By Engine Size	40ELPTO 2-Stroke	1993	40HP
MERCURY MARINE	Models - By Engine Size	40ELPTO 2-Stroke	1994	40HP
MERCURY MARINE	Models - By Engine Size	40ELPTO 2-Stroke	1995	40HP
MERCURY MARINE	Models - By Engine Size	40ELPTO 2-Stroke	1996	40HP
MERCURY MARINE	Models - By Engine Size	40ELPTO 2-Stroke	1997	40HP
MERCURY MARINE	Models - By Engine Size	40EO 2-Stroke	1992	40HP
MERCURY MARINE	Models - By Engine Size	40EO 2-Stroke	1993	40HP
MERCURY MARINE	Models - By Engine Size	40EO 2-Stroke	1994	40HP
MERCURY MARINE	Models - By Engine Size	40EO 2-Stroke	1995	40HP
MERCURY MARINE	Models - By Engine Size	40EO 2-Stroke	1996	40HP
MERCURY MARINE	Models - By Engine Size	40EO 2-Stroke	1997	40HP
MERCURY MARINE	Models - By Engine Size	40EO Jet 30 2-Srroke	1994	30HP
MERCURY MARINE	Models - By Engine Size	40EO Jet 30 2-Srroke	1995	30HP
MERCURY MARINE	Models - By Engine Size	40EO Jet 30 2-Srroke	1996	30HP
MERCURY MARINE	Models - By Engine Size	40EO Jet 30 2-Srroke	1997	30HP
MERCURY MARINE	Models - By Engine Size	45ELHO	1986	45HP
MERCURY MARINE	Models - By Engine Size	45ELHO	1987	45HP
MERCURY MARINE	Models - By Engine Size	45ELHO	1988	45HP
MERCURY MARINE	Models - By Engine Size	45ELHPTO	1988	45HP
MERCURY MARINE	Models - By Engine Size	45ELO	1986	45HP
MERCURY MARINE	Models - By Engine Size	45ELO	1987	45HP
MERCURY MARINE	Models - By Engine Size	45ELO	1988	45HP
MERCURY MARINE	Models - By Engine Size	45ELO	1989	45HP
MERCURY MARINE	Models - By Engine Size	45ELPTO	1986	45HP
MERCURY MARINE	Models - By Engine Size	45ELPTO	1987	45HP
MERCURY MARINE	Models - By Engine Size	45ELPTO	1988	45HP
MERCURY MARINE	Models - By Engine Size	45ELPTO	1989	45HP
MERCURY MARINE	Models - By Engine Size	50E 2-Stroke	1979	50HP
MERCURY MARINE	Models - By Engine Size	50E 2-Stroke	1980	50HP
MERCURY MARINE	Models - By Engine Size	50E 2-Stroke	1981	50HP
MERCURY MARINE	Models - By Engine Size	50E 2-Stroke	1982	50HP
MERCURY MARINE	Models - By Engine Size	50E 2-Stroke	1983	50HP
MERCURY MARINE	Models - By Engine Size	50E 2-Stroke	1984	50HP
MERCURY MARINE	Models - By Engine Size	50EH 2-Stroke	1982	50HP
MERCURY MARINE	Models - By Engine Size	50EH 2-Stroke	1983	50HP
MERCURY MARINE	Models - By Engine Size	50EH 2-Stroke	1984	50HP
MERCURY MARINE	Models - By Engine Size	50EL 2-Stroke	1979	50HP
MERCURY MARINE	Models - By Engine Size	50EL 2-Stroke	1980	50HP
MERCURY MARINE	Models - By Engine Size	50EL 2-Stroke	1981	50HP
MERCURY MARINE	Models - By Engine Size	50EL 2-Stroke	1982	50HP
MERCURY MARINE	Models - By Engine Size	50EL 2-Stroke	1983	50HP
MERCURY MARINE	Models - By Engine Size	50EL 2-Stroke	1984	50HP
MERCURY MARINE	Models - By Engine Size	50EL 2-Stroke	1985	50HP
MERCURY MARINE	Models - By Engine Size	50ELH 2-Stroke	1981	50HP
MERCURY MARINE	Models - By Engine Size	50ELH 2-Stroke	1982	50HP
MERCURY MARINE	Models - By Engine Size	50ELH 2-Stroke	1983	50HP
MERCURY MARINE	Models - By Engine Size	50ELH 2-Stroke	1984	50HP
MERCURY MARINE	Models - By Engine Size	50ELH 2-Stroke	1985	50HP
MERCURY MARINE	Models - By Engine Size	50ELPT 2-Stroke	1982	50HP
MERCURY MARINE	Models - By Engine Size	50ELPT 2-Stroke	1983	50HP
MERCURY MARINE	Models - By Engine Size	50ELPT 2-Stroke	1984	50HP
MERCURY MARINE	Models - By Engine Size	50ELPT 2-Stroke	1985	50HP
MERCURY MARINE	Models - By Engine Size	50HP	1976	50HP
MERCURY MARINE	Models - By Engine Size	50HP	1977	50HP
MERCURY MARINE	Models - By Engine Size	50HP	1978	50HP

Replaces These Part Numbers

API MARINE	MOT3007
ARCO MARINE	5379
ARROWHEAD	SAB0016
CARGO	110654
EMP PARTS	4-5605
J&N Electrical Products	410-21047
LESTER	5399
MERCURY MARINE	50-73521, 73521
SIERRA MARINE	18-5605
UNITED TECH	1097028-M030SM, 4820240-M030SM, 996240, SM10790, SM10970, SM48202
WAI	5399N

Frequently Asked Questions

Q: Why is my starter suddenly making a grinding noise?
A: Several things could produce grinding noises. First check to see if it has come loose. If so, install and replace any shims for proper drive gear to flywheel alignment and re-torque to OE specs. If it is still grinding, remove it for closer inspection, making sure to give the flywheel a detailed look. Replace components as needed.

Q: What is a gear reduction starter?
A: In short, it’s a super torque starter. It has a set of planetart gears that give it a lot of speed and the reduction of those gears gives it a lot of torque, providing the best of both worlds. These starters were previously known as Super Torque for racing applications for use on high compression engines. Today, however, nearly everything has a gear reduction starter on it. These starters are lighter, faster, smaller and use less CCA (cold cranking amps) to get going.

Q: How many amps does it take to start an engine?
A: It takes 500-800 CCA (cold cranking amps) on average. High compression engines will pull even more depending on compression ratios.

Q: Why am I hearing a whine or whizzing sound without the engine cracking?
A: The drive gear is slipping and not engaging the flywheel. Replacement is needed.

Q: Why does my starter keep running after the car starts?
A: It is either the solenoid or the ignition switch. You should consult a mechanic immediately.

Q: My car leaks oil on the starter, will that affect it?
A: Yes. An oil-soaked armature commutator and brushes will wear out much faster and you run the risk of a dead start burning up the field coils.

Q: Why does the battery cable on my starter smoke?
A: Resistance. Either from a weak, loose or corroded cable or a failing worn starter. Replace components as needed.

Q: Why does the starter quit working and turning over on my car when it’s hot?
A: It’s most likely a heat-soaked solenoid. Heat-soaked solenoids have much more internal resistance when hot. Replace if needed and add a heat shield and/or wrap the headers with heat barrier wrap.

Q: When do I need to replace my starter?
A: Replace your starter under any of these conditions. 1)If your engine doesn't crank constantly every time the key is turned. 2) If the engine will not turn over and you hear a loud click. 3) If the starter fails to turn off or grinds the entire drive. In summary, if you have a strong battery and any one of these conditions exist, you should replace your starter.

Customer Reviews

WARNING: California’s Proposition 65

Starter for Mercury Outboard 40 45 50 HP 50-73521

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Overview

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Applications List

Replaces These Part Numbers

Frequently Asked Questions

Customer Reviews

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