MerCruiser Engine Parts
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Special Order! See availability for details
OEM Quicksilver/Mercury Spark Plug Wires 84-816761Q10
Mercury Marine / Quicksilver
$105.49OEM Quicksilver/Mercury Spark Plug Wires 84-816761Q10 Spark plug set 816761Q10 is for use on V-8 MerCruiser engines (454 and482 CID) made by General Motors with conventional points ignition systems (1977 through 1985) and Thunderbolt ignition...- Part Number:
- MM-84-816761Q10
- Availability:
- See Special Order Details
- Application:
- Blue wires - Fits GM V-8 454 - 482 cid engines with conventional points ignition ('77-'85) and Thunderbolt ignition ('69-'81)
$105.49 -
OPEN BOX OEM MerCruiser 4.3/5.0/5.7 V6/V8 Brass Sea Water Pump 862914T3 862914T10 8M0118067 8M0137216 8M0122655 8M0139995
Mercury Marine / Quicksilver
$688.49 $469.99OPEN BOX OEM Factory MerCruiser BRASS sea water pump assy WITHOUT Air Fittings (AKA Raw Water Pump/ Seawater pump) Casting number on this pump housing is 8629140 and the casting number on the back nipple plate is 862776c and is removable if...- Part Number:
- OPENBOX-46-8M0139995
- Availability:
- In Stock - Ships same or next business day.
$688.49 $469.99 -
On Sale
OPEN BOX OEM Quicksilver Mercruiser Mercury Small Block V6 V8 5.0 5.7 6.2 350 377 Circulating Water Pump 46-8M0113734
Mercury Marine / Quicksilver
$173.49 $135.99OPEN BOX OEM Quicksilver/Mercury Small Block Circulating Pump 46-8M0113734 Replacement water pump with housing 8M0113734 is for V-6 (serial number 1A603239 and below) and V-8 (305, 350 and 377 cid) MerCruiser engines made by General Motors. See your...- Part Number:
- OPENBOX-8M0113734
- Availability:
- In Stock - Ships same or next business day.
- Application:
- GM V-6(s/n 1A063239 & below) & V-8 (350 & 377 cid) engines
$173.49 $135.99 -
OPEN BOX OEM Quicksilver Mercury Mercruiser 3.0L LX Spark Plug Wires Kit 84-816761Q13
Mercury Marine / Quicksilver
$61.49 $24.99OPEN BOX / Clearance / New old stock Spark plug set 816761Q13: Is for use on 3.0L and LX versions of MerCruiser engines with Delco digital ignition systems (1990 through 1995). Complete set of four spark plug wires with boots at...- Part Number:
- OPEBNBOX-84-816761Q13
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Fits MCM 3.0L/LX w/ Delco digital ignition (1990-1995)
$61.49 $24.99 -
OPEN BOX OEM Quicksilver Mercury Mercruiser Spark Plug Wire Kit 84-816761Q 8
Mercury Marine / Quicksilver
$80.49 $39.99OPEN BOX / Clearance / New old stock OEM Quicksilver/Mercury Spark Plug Wire Kit 84-816761Q 8 Spark plug set 816761Q8 is for use on in-line, 6-cylinder MerCruiser engines with conventional points ignition systems (1963 through...- Part Number:
- OPENBOX-84-816761Q 8
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Fits GM in-line 6 cylinder engines with conventional points ignition ('63-'81)
$80.49 $39.99
Engine Parts
PowerBoatSupply.com carries all the premium-quality MerCruiser engine parts you need for a full engine overhaul. The MerCruiser I/O and inboard engines generally last longer than their outboard counterparts, but even with their durability, they eventually require service. Find OEM 3.0L MerCruiser engine parts, including alternators, starter motors, and cool fuel kits. Replacement parts also help restore your engine’s ignition and fuel system, whether diesel or gasoline powered.
Typically, inboard engines last up to 1,500 hours, while outboard engines average about 750 hours. Performing an overhaul—taking apart the engine, identifying and replacing worn parts, and cleaning components before reassembly—can improve power and extend service life. Using quality 454 MerCruiser engine parts during an overhaul helps maximize performance and reliability.
Boat Engine Parts for MerCruiser
We stock all the MerCruiser 3.0 engine parts and accessories you need to service your boat. Our inventory includes replacement serpentine belts, distributor caps, circulating pumps, thermostat kits, gear lube monitor bottles, inline starters, and much more.
MerCruiser Engine Parts Kits
Working with complete kits can be more efficient than ordering individual components. Why place multiple orders when you can get an OEM parts kit with everything you need for a full engine service? For example, an ignition sensor assembly kit includes all the precisely matched components necessary to optimize your ignition system.
For over four decades, PowerBoatSupply.com has supplied boat owners and marine mechanics with top-quality MerCruiser engine parts. Our experienced team is here to help you find the right parts for your specific engine. Buy with confidence—if we wouldn’t use a part in our own boats, we wouldn’t sell it to you.