• Select Mercury from the dropdown menu on our homepage, then click on the Outboard Parts by Year link. From there, click on your outboard’s brand (Mercury, Mariner, etc.) and then on your outboard’s year. Next, select your motor’s horsepower and then click on its serial number to access the parts catalog for your specific model.
• Performance Product Technologies has been a leading Online Marine Dealer of New and Remanufactured Marine Engines since 2002. PPT has been supporting boat owners worldwide that are looking for the Best Prices and Best Technical Support when Shopping for high quality Marine Engines, Sterndrives, Motor Parts, Inboard Marine Engines, Outboard Motors and Transmissions.
• MarineEngine.com 184 Jones Drive Brandon, VT 05733 USA (800) 209-9624 (802) 247-4700 (802) 419-3055 Fax.

Quality, Performance, Innovation, Reliability.

Mercury Outboards by Horsepower 2.2 HP 3 HP 3.3 HP 3.5 HP 3.6 HP 3.9 HP 4 HP 4.5 HP 5 HP 6 HP 7.5 HP 8 HP 9.8 HP 9.9 HP 10 HP 15 HP 20 HP 25 HP 30 HP 40 HP 45 HP 50 HP.

Nobody makes a more reliable, powerful, and efficient lineup of outboard motors than Mercury: Verado, Pro XS, FourStroke, SeaPro, and Jet. Backed by decades of innovation and leadership, Mercury outboards are built to go the distance, delivering legendary performance driven by forward-thinking technology.

Verado 600hp

With the unwavering strength of a V12 powerhead, the 600hp Verado outboard delivers extraordinary range and performance to take your boating adventures to new destinations.

SeaPro 500hp

Mercury redefined the way horsepower meets the water by building the first-ever V12 outboard. At 500hp, it’s our most powerful, most capable commercial outboard yet.

Verado 250 - 400hp

The ultimate combination of smooth and quiet operation, refined power, and effortless control. For boaters who settle for nothing but the best.

SeaPro 200-300hp

The hard-working, durable and reliable commercial outboard you need when you make your living on the water

Pro XS 175 - 300hp

Professional-level performance for competitive anglers and other speed worshippers

FourStroke 175 - 300hp

Reliability, flexibility, power, and efficiency – all within your reach

200hp

SportJet provides maximum maneuverability in shallow waters

3.0L Mercury Diesel Outboard

A diesel 2-stroke designed for light-duty commercial patrol boat applications.

75-150hp

A commercial-grade engine that works as hard as you do.

75-150hp

Reliable, durable, strong and efficient.

65-80hp

Fly over shallow-water obstacles with the greatest of ease. Quick and easy.

30-60hp

The most popular outboard on the water. Bar none.

15-60hp

A commercial-grade outboard motor built to handle the task at hand.

25-40hp

Fly over shallow-water obstacles with the greatest of ease. Quick and easy.

2.5-25hp

The ultimate for convenience -- quiet, capable and lightweight. Just point and boat.

9.9-15hp ProKicker

Designed and built to improve every aspect of your time on the water, from starting the motor to changing the oil and everything in between.

5hp Propane

Reliability, Portability, and Power with the convenience of Propane

When you make the best marine products in the world, you want the best dealers behind them. That’s why we make sure Mercury dealers are the best equipped to sell and service our products. And with thousands of dealers around the globe, you can rest assured we’re always close by and ready to help you go boldly.

Mercury Marine is a marine engine division of Brunswick Corporation. Its main product is manufacturing and selling outboard motors. It also produces the MerCruiser line of sterndrives and inboard motors.

History[edit]

Founding[edit]

The Kiekhaefer Mercury company began in 1939 when engineer Carl Kiekhaefer purchased a small outboard motor company in Cedarburg, Wisconsin. Kiekhaefer's original intention for the Kiekhaefer Corporation was to make magnetic separators for the dairy industry. The purchase included 300 defective outboard motors. Kiekhaefer and a small staff of employees rebuilt the motors and sold them to Montgomery Ward, a mail-order company. The motors were much improved, so the buyer purchased more. Kiekhaefer designed motors that withstood the elements better than his competition and called the motor Mercury (taking advantage of the 'Mercury' Motor Car popularity at the time) whilst adopting the logo of the Roman god Mercury.^[1]

Kiekhaefer took more than 16,000 orders at the 1940 New York Boat Show.

World War II[edit]

World War II changed the corporate climate, and Kiekhaefer sought a government contract to design two-man air-cooled chainsaws. Army engineers had been unable to design a lightweight motor. Kiekhaefer designed a new lightweight chainsaw in 2 months. The Kiekhaefer powered chainsaw was able to cut through a 24-inch (610 mm) green log in 17 seconds, while it took the nearest competitor 52 seconds. Mercury was awarded the contract, and was the world's largest chainsaw manufacturer by the end of the war.^{[citation needed]}

Post-war 1940s[edit]

Kiekhaefer Mercury foresaw that the average American's interest in boating would increase after the war. Kiekhaefer introduced a 19.8 cubic inch, 10 horsepower (hp), two-cylinder alternate firing design engine at the 1947 New York Boat Show called the 'Lightning' or KE-7. This engine, also called the 'Super 10', actually developed around 14 horsepower. Its designation was updated to KF-7 for 1949. For 1951 the engine block, though still displacing 19.8 cubic inches, was updated a great deal, and given the name 'Hurricane'. The 1951 kg-7 'Super 10' featured this engine, which developed around 16 horsepower. For 1952, this model was updated with a 'forward, neutral, reverse' gearset, and a twist grip throttle. It was renamed 'Cruiser' at this point, and no longer called 'Super 10'. This engine later became the heart of the 'Mark 25', of the mid to late fifties. Initially rated at 16 horsepower, this engine was soon beefed up to 20. There was also an 'H' version, which produced more power but carried no rating. 'H' version Mercurys were mostly used for racing.

In 1949, the company also introduced its first large outboard, the approximately 40 cubic inch, 4 cylinder in line, 'Thunderbolt'. This engine was rated at 25 horsepower, but actually put out around 28. There was soon an 'H' version designed for high rpm use. This version put out nearly 40 horsepower, while being rated at '25+'. The Thunderbolt engine benefited from upgrades and updates, eventually becoming the Mark 40, Mark 50, and Mark 55 engines of the mid and late fifties. All of these were rated quite accurately at 40 horsepower. The Mark 55H (high speed) developed more, but carried no rating.

Due to a rather large gap between the Mark 25 (20 hp) and the Mark 55 (40 hp), Mercury brought out the 4 in line, approximately 30 cubic inch 'Mark 30' (30 horsepower) engine for 1956, and produced versions of its 'TurboFour' engine for several years. It, too, was available as an 'H' version, producing much extra horsepower for racing and sporting use.

Why these Mark engines (and other Mark engines) carried number names which were not horsepower ratings, not displacement numbers, and not consistent from one motor to another, is a real mystery. Why was the 20 hp Mercury a Mark 25, and the 40 hp Mercury a Mark 55, while the 30 hp job was the Mark 30? No one really knows.

Of course, there were also smaller Mercs during both the K era and the Mark era, such as the 'Super 5' and later, such engines as the 'Mark 6' and the 'Mark 10'.

1950s[edit]

In 1957 Kiekhaefer started testing at a Florida lake he called 'Lake X' to keep the location secret. Later that year the Kiekhaefer Mercury company designed a new inline 6-cylinder, 60 cubic inch, 60 hp (45 kW) engine named 'Mark 75'. Like its 2- and 4-cylinder brethren, the Mark 75 featured internal reed valves. The reed valve blocks served as intermediate main bearings. Because the valves occupied space already necessary for the main bearings instead of mounting to an extension of the crankcase, crankcase volume was minimized, resulting in a higher crankcase compression ratio, and more power in proportion to displacement than the competition.

Mercury's first 6-cylinder engines featured 'direct reversing'. Instead of a lower unit with forward, neutral and reverse gears, its lower units were more compact, with only drive and driven gears, and no submerged shift mechanism required. Reverse was selected by turning off the engine and restarting it in opposite rotation, and neutral by simply switching off. Mark 75s, like many of their smaller brethren, were available in an 'H' (high speed) version. Many of these large H engines sported open headers for competition and produced 90 horsepower from 60 cubic inches. Two totally stock Mark 75s set a world endurance record on Lake X, running 50,000 miles at an average of 30.3 mph, while being re-fueled on the fly. The boats were stopped only for driver changes and standard maintenance. After the record-setting run was completed, the motors were torn down and inspected for wear. They were found to be well within factory tolerances. The amazing distance has never been topped, even with modern advancements in outboard technology.

For 1958, an enlarged version of this engine was introduced. The new 'Mark 78' boasted 70 horsepower from 66 cubic inches of displacement. No 'H' version was offered. Also in 1958, a stock Mark 75H set a new world speed record for outboard motors, of 107 mph.

NASCAR racing[edit]

Kiekhaefer decided to promote his company by owning a NASCAR and AAA team. The team dominated NASCAR Grand National (at one point winning 16 straight races), even though it only competed in 1955 and 1956. The team won the 1955 and 1956 NASCAR championships with drivers Tim Flock and Buck Baker. One of Kiekhaefer's innovations was using dry paper air filters, which are still standard in automobiles today.^{[citation needed]}

1960s[edit]

When Kiekhaefer Mercury's top-of-the-line, 80 horsepower (74 cubic inch) model 'Merc 800' was introduced for 1960, direct reversing as standard equipment was optionally replaced by full forward, neutral and reverse gear shifting, as on Mercury's 2- and 4-cylinder models, and 'thru-hub' exhaust was introduced. Previously, as with other outboard brands and Mercury's smaller models, exhaust exited from a chute at the rear of the cavitation plate above the propeller. Thru-hub exhaust was claimed to be more efficient by omitting the added drag of an exhaust chute, and using the low-pressure area necessarily created by the gear housing and propeller moving through the water to assist in exhaust evacuation. Over the next several years, thru-hub exhaust became a standard feature of all Mercury models, and later was adopted near industry-wide for both outboards and stern-drives.

With Mercury Marine outboards typically having smaller displacement per horsepower and better fuel economy than the competition's motors, an ad ran in publications showing a Mercury-powered boat pulling an elephant on a large ski-like platform. The caption simply read 'Mercury, pulls an elephant. Runs on peanuts.'

In 1961 the company merged with the Brunswick Corporation.

The company introduced the MerCruiser stern-drive line at the 1961 Chicago Boat Show. The line would later take over 80 percent of the world market.^[2]

For 1962, the Merc 1000 became the new top of the line in line 6, offering 100 hp. It was somewhat of a sensation. It also introduced the new 'Phanton Black' paint scheme which soon spread to the entire line and became famous.

In 1966, 6-cylinder Mercury models featured the introduction of electronic ignition, another first that eventually became an industry standard.

Carl Kiekhaefer resigned as President of Kiekhaefer Mercury in 1970, and the name was changed to Mercury Marine in 1972. During this time, Mercury produced snowmobiles, like many other companies in the late 1960s. The first ones incorporated a 250 cc two-man chainsaw engine.

1970s[edit]

In 1971, they came out with the Rocket and Lightning models of snowmobiles. These sleds combined aluminum tunnels with Canadian Curtiss Wright (CCW) engines. The Rocket was a 340, and the Lightning a 400 with electric start. By 1972, Mercury started production of the Hurricane, a more modern snowmobile with optional slide rail suspension (as opposed to bogie wheel). In 1974 Mercury introduced the Sno-Twister 400cc snowmobile designed primarily for racing. It featured a Kohler free-air engine and succeeded in dominating the 400cc class.

In 1975 Mercury introduced 340cc and 440cc versions of the Sno-Twister and both were dominant at the track. 1976 saw a change in the Sno-Twister, this time 250cc, 340cc, and 440cc versions were all introduced. These were radical for their time and were the result of Mercury Sno Pro sleds developed and raced the previous year. These 1976 sleds were featured water-cooled Kohler engines. The chassis were small, lightweight, very low profile, with curved handlebars and seat cushions that were designed for left turns (oval tracks).

In 1975 and 1976 Mercury also produced the Trail Twister snowmobiles which were available in 340cc and 440cc which were fan-cooled. These were some of the fastest lake racers around in their day. This started off a new era in snowmobile construction for the whole industry and the sled's basic format set up what is seen today in modern snowmobiles.

Mercury was renowned in the 1970s as one of the best racing and performance snowmobile manufacturers, as well as an industry leader in marine engine production. Sno Twisters and Trail Twisters are highly sought-after sleds due to their ahead of the time design, power, and unique styling.^{[citation needed]}

Engine specifications[edit]

Present day[edit]

At present, Mercury product brands include Mercury, Mercury Racing, MerCruiser, and Mariner outboards (sold outside the U.S.). Outboard sizes range from 2.5 horsepower (1.9 kW) to 600 horsepower (450 kW). MerCruiser sterndrives and inboards range from 135 to 430 horsepower (320 kW) and Mercury Racing outboards produce up to 450 horsepower (340 kW) and sterndrives to 1,750 horsepower (1,300 kW). Subsidiaries include Mercury Precision Parts and Accessories as well as Mercury propellers and Mercury Jet Drives. Mercury outboards 30 hp and below are manufactured by Tohatsu in Japan.

Mercury has recently developed a processor-enhanced line of outboards called the 'Verado' outboard engine.^[3] The 'Verado' system integrates the outboard into an entire system, including 'fly-by-wire' steering and advanced diagnostics. Verado engines are available in 250 hp and 300 hp (V8), 350 hp and 400 hp (supercharged inline 6), and 600 hp (V12) as of early 2021.

In 2007 Mercury Marine began selling its Zeus drive system.^[4] Developed by Mercury and its joint venture company Cummins MerCruiser Diesel (CMD), the Zeus drive is a dual-engine pod drive system. Some of the most notable benefits from this class design for boaters will be enhanced helm control. While underway an automated trim control feature simplifies operation. Also, Zeus includes Skyhook Electronic Anchor which will keep a vessel in a fixed location within a tight range. The system might be called all weather as it will maintain location in strong currents and winds.^[5]

Mercury Marine is one of the world’s leading providers of marine propulsion. As a $2.3 billion division of Brunswick Corporation, Mercury and its 6,200 employees worldwide provide engines, boats, services and parts for recreational, commercial and government marine applications.

Cached

Mercury’s brand portfolio includes Mercury and Mariner, Mercury MerCruiser sterndrives and inboard engines, MotorGuide trolling motors, Mercury and Teignbridge propellers, Mercury inflatable boats, Mercury SmartCraft electronics, and Mercury and Quicksilver parts and oils. MotoTron^[6] electronic controls was also a part of Mercury Marine, but as of October 2008 Brunswick Corp. sold MotoTron and its intellectual properties to Woodward Governor of Fort Collins, Colorado.^[7]

Mercury Marine Outboard Parts Canada

SeaCore is a brand of sterndrive marine propulsion systems manufactured in the United States by MerCruiser. The SeaCore engine design utilizes materials, technologies, and systems, created specifically for Mercury Marine, to prevent galvanic corrosion within its engine, transom and drive. SeaCore propulsion includes models generating between 220 and 425 horsepower (317 kW). SeaCore is designed for a wide variety of vessels operated in or moored on saltwater.

Mercury Marine also provides various training programs through its training arm called Mercury University.^[8]

References[edit]

1989 Mercury Mariner Outboard Parts

1. ^Company History - Mercury Marine, Stumbling into the outboard business… the best mistake ever, date accessed 2011-08-14.
2. ^'Heritage'. Mercury Marine. Archived from the original on 2010-03-07. Retrieved 2014-01-15.
3. ^'Verado Six-Cylinder'. Mercury Marine. Archived from the original on 2010-05-05. Retrieved 2014-01-15.
4. ^[1]Archived February 25, 2007, at the Wayback Machine
5. ^https://www.mercurymarine.com/en/us/gauges-and-controls/steering/skyhook-digital-anchor/
6. ^'MotoHawk Control Solutions'. mcs.woodward.com. 7 May 2015.
7. ^'Woodward Governor buys Oshkosh's MotoTron'. Business Journal of Milwaukee. October 6, 2008.
8. ^'Mercury Marine University'. Edumaritime.com. Retrieved 2014-01-15.

External links[edit]

Media related to Mercury Marine at Wikimedia Commons

• Official website

Mercury Mariner Outboard Serial Number Lookup