MerCruiser Engine Parts
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OEM Quicksilver/Mercury Thunderbolt 4 & 5 Distributor Cap 805759T 1
Mercury Marine / Quicksilver
$62.99 $53.99OEM Quicksilver/Mercury Thunderbolt 4 & 5 Distributor Cap 805759T 1 Distributor cap kit 805759T1 fits marinized, V-8 MerCruiser engines made by General Motors with Thunderbolt IV and V HEI ignition systems. See your owner’s manual for...- Part Number:
- 710-805759T 1
- Availability:
- In Stock - Ships same or next business day.
- Application:
- GM V-8 engines w/ Thunderbolt IV & V HEI ignitions
$62.99 $53.99 -
OEM MerCruiser Thermostat Gasket 27-47510
Mercury Marine / Quicksilver
$3.45MerCruiser Thermostat Gasket 27-47510 The Quicksilver Thermosat Gasket fits MCM/MIE GM V-6 & V-8 engines w/older style 2 piece thermostat housing.- Part Number:
- 710-27-47510
- Availability:
- In Stock - Ships same or next business day.
- Description:
- T-Stat Gasket: GM V-6 & V-8 engines w/older style 2-pc thermostat housing.
$3.45 -
OEM Quicksilver / Mercury Spark Plug Red Ignition Wire Kit 84-816608Q83
Mercury Marine / Quicksilver
$103.99 $78.42OEM Quicksilver/Mercury Spark Plug Wire Kit 84-816608Q83 Spark plug set 816608Q83 is for use on V-8 MerCruiser engines (305, 350 and 377 CID) made by General Motors with Mercury ignition systems (1999 through 2001). T- Part Number:
- 710-84-816608Q83
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Red wires - Fits GM V-8 305/350/377 cid engines with Mercury ignition ('99 & Newer)
$103.99 $78.42 -
OEM MerCruiser Tune Up Kit Delco Ign 34235Q 1
Mercury Marine / Quicksilver
$30.49 $25.99MerCruiser Tune Up Kit Delco Ign 34235Q 1 Fits Marinized, 4 and 6-cylinder, MerCruiser Engines made by General Motors with Delco Conventional Ignition Systems. See your owner’s manual for replacement information and directions.- Part Number:
- 710-34235Q 1
- Availability:
- In Stock - Ships same or next business day.
- Application:
- GM In-line 4 & 6 cyl. & Univ. Atomic 4 w/ Delco single point ignition
$30.49 $25.99 -
OEM Quicksilver/Mercury 55A Alternator Assembly 807652T
Mercury Marine / Quicksilver
$376.99 $286.98OEM Quicksilver/Mercury 55A Alternator Assembly 807652T 55 amp alternator 807652T is for V-6 and V-8 MerCruiser stern drive or inboard engines made by General Motors 1996 through 1999 using the serpentine belt drive system. See your service manual...- Part Number:
- 710-807652T
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Mando 55A: Serpentine Belt. GM 305 & 350 cid - V-6 & V-8 ('96-'99) carb engines
- Type:
- New
$376.99 $286.98 -
OEM Quicksilver/Mercury Delco Distributor Cap & Rotor Kit 811635Q 2
Mercury Marine / Quicksilver
$26.49 $22.99OEM Quicksilver/Mercury Distributor Cap & Rotor Kit 811635Q 2 This kit includes the distributor cap and rotor. It fits 4-cylinder MerCruiser Engines made by General Motors with Delco EST (electronic spark timing) ignition systems. See your...- Part Number:
- 710-811635Q 2
- Availability:
- In Stock - Ships same or next business day.
- Application:
- MerCruiser - OMC - Volvo - Penta GM 4 cyl w/ Delco EST ignition
$26.49 $22.99 -
OEM Quicksilver/Mercury Inline Engine Starter 50-8M0090697
Mercury Marine / Quicksilver
$349.99 $299.99OEM Quicksilver/Mercury Inline Engine Starter 50-8M0090697 Starter motor assembly 8M0090697 can be used on in-line 4-cylinder and 6-cylinder MerCruiser engines made by General Motors (1963 through 1998). This starter motor assembly features an 11-tooth...- Part Number:
- 710-50-8M0090697
- Availability:
- In Stock - Ships same or next business day.
- Type:
- New
- Application:
- In-Line Engines
$349.99 $299.99 -
OEM Quicksilver/Mercury Spark Plug Wire Kit 84-816608Q61
Mercury Marine / Quicksilver
$99.49 $75.36OEM Quicksilver/Mercury Spark Plug Wire Kit 84-816608Q61 Spark plug set 816608Q61 is for use on vintage, V-8 (454-502 CID) General Motors marinized engines with Thunderbolt IV and V ignition systems (1981 through 1997).- Part Number:
- 710-84-816608Q61
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Red wires - Fits GM V-8 454 - 502 cid engines with Thunderbolt IV & V ignition ('81-'97)
$99.49 $75.36 -
OEM Quicksilver/Mercury Thermostat 864493
Mercury Marine / Quicksilver
$32.49 $25.06OEM Quicksilver/Mercury Thermostat 864493 Thermostat 864493 is for MerCruiser stern drive engines 4.3L, 4.5L, 5.0L, 5.7L and 6.2L MPI (Multi-Port Injection) with dry joint exhaust and closed cooling systems. It is a 170 F degree thermostat.- Part Number:
- 710-864493
- Availability:
- In Stock - Ships same or next business day.
- Temp.:
- 170 Deg -
- Application:
- MCM 4.3L - 5.0L - 5.7L & 6.2L MPI engines with dry joint exhaust and closed cooling
$32.49 $25.06 -
OEM MerCruiser ExhaustManifold Drain Plug 22-16951Q 1
Mercury Marine / Quicksilver
$30.49 $23.55MerCruiser ExhaustManifold Drain Plug 22-16951Q 1 Engine block or manifold drain plug 16951A1 fits most MerCruiser stern drive or inboard engines blocks and manifolds to make draining cooling water for winterizing or changing anti-freeze easier. Can be...- Part Number:
- 710-22-16951Q 1
- Availability:
- In Stock - Ships same or next business day.
- Replaces:
- OMC 379957 - Volvo 82745-1
$30.49 $23.55 -
OEM Quicksilver/Mercury Spark Plug Wires 84-816761Q14
Mercury Marine / Quicksilver
$59.49 $44.29OEM Quicksilver/Mercury Spark Plug Wires 84-816761Q14 Spark plug set 816761Q14 is for use on 3.0L and LX versions of MerCruiser engines with Delco EST ignition systems (1990 through 2016).- Part Number:
- 710-84-816761Q14
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Fits MCM 3.0L/LX with Delco EST ignition ('90 & Newer)
$59.49 $44.29 -
OEM Quicksilver/Mercury Spark Plug Wire Set 84-863656A 2
Mercury Marine / Quicksilver
$148.99 $110.70OEM Quicksilver/Mercury Spark Plug Wire Set 84-863656A 2 Spark plug set 863656A2 is for use on 4.3L MPI MerCruiser stern drive engines.- Part Number:
- 710-84-863656A 2
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Fits MCM 4.3L MPI
$148.99 $110.70 -
OEM Quicksilver/Mercury Thermostat Kit- 140 Degree 807252Q 3
Mercury Marine / Quicksilver
$34.99 $29.99OEM Quicksilver/Mercury Thermostat Kit- 140 Degree 807252Q 3 Thermostat Kit 807252Q3 is for 1982 and older, V-8 MerCruiser marinized stern drive and inboard engines with standard cooling systems made by Ford Motor Company or General Motors. It is...- Part Number:
- 710-807252Q 3
- Availability:
- In Stock - Ships same or next business day.
- Description:
- GM & Ford V-8's 1982 & older w/ Std. Cooling/Hi-Performance V-8's 1996 & older & closed cooling: 140 Deg -
$34.99 $29.99 -
OEM Quicksilver/Mercury 4.3L Cap & Rotor Kit 898253T28
Mercury Marine / Quicksilver
$131.99 $112.99OEM Quicksilver/Mercury 4.3L Cap & Rotor Kit 898253T28 Distributor cap kit 898253T28 fits MerCruiser 4.3L Engines with Multi-Point Electronic Fuel Injection (MPI). See your owner’s manual for replacement information and directions.- Part Number:
- 710-898253T28
- Availability:
- In Stock - Ships same or next business day.
- Application:
- MCM 4.3L MPI
$131.99 $112.99 -
OEM Quicksilver/Mercury Water Pump Impeller Kit 47-59362A 4
Mercury Marine / Quicksilver
$61.49 $45.92OEM Quicksilver/Mercury Water Pump Impeller Kit 47-59362A 4 This five-piece kit contains the impeller, face plates and o-ring to replace those parts in MerCruiser Bravo I, II and III drives.- Part Number:
- 710-47-59362A 4
- Availability:
- In Stock - Ships same or next business day.
- Type:
- Impeller Kit
- Application:
- Fits plastic 2 piece body sea water pump
$61.49 $45.92 -
Serpentine Belt and Pulley Kit 8M0150824 - Includes 2,197 mm Long Belt and Replacement Pulley
Mercury Marine / Quicksilver
$149.33 $111.12Serpentine belt and pulley kit 8M0150824 Serpentine belt and pulley kit 8M0150824 includes the 2, 197 mm long belt and replacement pulley. It is the same belt and pulley as installed by MerCruiser. See your owner's manual or service manual for specific...- Part Number:
- 710-57-8M0150824
$149.33 $111.12 -
OEM Quicksilver/Mercury Thermostat 130 Degree 8M0057307
Mercury Marine / Quicksilver
$129.49 $110.99OEM Quicksilver/Mercury Thermostat 130 Degree 8M0057307 Thermostat 8M0057307 is for select Mercury Optimax, 3.0L, non-Pro, V-6 outboards (s/n 1B227000 and above). It is a 130 F degree thermostat. Thermostat only. Additional seals or gaskets may be...- Part Number:
- 710-8M0057307
- Availability:
- In Stock - Ships same or next business day.
- Temp.:
- 130 Deg -
- Application:
- 3.0L OptiMax
$129.49 $110.99 -
OEM MerCruiser Switchbox Assembly- 3 & 6 Cylinder 332-7778A12
Mercury Marine / Quicksilver
$384.99 $329.99MerCruiser Switchbox Assembly- 3 & 6 Cylinder 332-7778A12 Outboard switch box assembly 7778A12 is for use with three cylinder and six cylinder Mercury or Mariner 2-cycle outboards using ADI (alternator driven ignition) only.- Part Number:
- 710-332-7778A12
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Use on various 3 & 6 cylinder outboards with ADI ignition systems.
$384.99 $329.99 -
OEM Quicksilver/Mercury Spark Plug Wires 84-847701Q17
Mercury Marine / Quicksilver
$113.99 $85.74OEM Quicksilver/Mercury Spark Plug Wires 84-847701Q17 Spark plug set 847701Q17 is for use on V-8 MerCruiser 454 Magnum MPI Horizon inboard engines (1998).- Part Number:
- 710-84-847701Q17
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Blue wires - Fits MIE 454 Mag MPI Horizon ('98)
$113.99 $85.74 -
OEM Quicksilver/Mercury Delco Distributor Cap 393-9459Q 1
Mercury Marine / Quicksilver
$30.49 $26.49MerCruiser Cap-Distributor-Delco Ign 393-9459Q 1 Fits Marinized, 4-cylinder MerCruiser Engines made by General Motors with conventional ignition systems.- Part Number:
- 710-393-9459Q 1
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Delco 4 cyl. pt ignition
$30.49 $26.49
Engine Parts
PowerBoatSupply.com has all the premium-quality Mercruiser engine parts you need for an overhaul of your boat’s engine. The Mercruiser I/O and inboard engine generally last longer than its outboard cousin. But even with a longer lifespan, these engines will eventually need an overhaul. Find OEM 3.01 Mercruiser engine parts, including alternators, starter motors, and cool fuel kits. Use replacement parts to improve your engine's ignition and fuel system, whether it's diesel or gasoline.
You can get 1500 hours with an inboard engine and about 750 hours with outboard engines. However, taking apart the engine, identifying and replacing damaged parts, and cleaning all components before restoring it can improve power and longevity. Use quality 454 Mercruiser engine parts during an overhaul to increase the performance and lifespan of your boat.
Boat engine parts Mercruiser
We have all the Mercruiser 3.0 engine parts and accessories you need to service your engine, including replacement serpentine belts, distributor caps, circulating pumps, thermostat kits, gear lube monitor bottles, inline engine starters – and so much more!
Mercruiser engine parts kits
It is usually more efficient to work with complete kits when overhauling your Mercruiser engine. Why place multiple orders for individual parts when you can get the complete package of OEM replacement parts to refurbish your engine and get it running in peak condition? For example, an ignition sensor assembly kit contains all components that precisely fit together to improve your ignition system.
PowerBoatSupply.com has provided boat owners and marine mechanics with premium engine parts for over four decades. Our team is ready to use our knowledge and experience to help you find the right Mercruiser parts for your engine. Just ask if you have any questions about which is the right part to order. Buy with peace of mind knowing that we wouldn’t sell you a part that we weren’t confident in using in our own boats.