MerCruiser Engine Parts
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OEM Quicksilver/Mercury O/B Thermostat- 143 Degree 833072003
Mercury Marine / Quicksilver
$50.49 $42.99OEM Quicksilver/Mercury O/B Thermostat- 143 Degree 833072003 Thermostat 833072003 is for select Mercury Optimax, 2.5L, non-Pro, V-6 outboards (s/n 1B227000 and above). It is a 143 F degree thermostat. Thermostat only. Additional seals or gaskets...- Part Number:
- 710-833072003
- Availability:
- In Stock - Ships same or next business day.
- Temp.:
- 143 Deg -
- Application:
- Optimax Mercury O/B with 2.5L - 135-200 hp
$50.49 $42.99 -
OEM Quicksilver/Mercury Prestolite Tune Up Kit 392-6324Q 1
Mercury Marine / Quicksilver
$31.49 $23.12MerCruiser Tune Up Kit Prestolite 392-6324Q 1 For 3.0L, 3.7L, 3.8L (V-6) 5.7L and V-8 MerCruiser Engines with Prestolite Conventional Ignition Systems having screw down caps. See your owner’s manual for replacement information and directions.- Part Number:
- 710-392-6324Q 1
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Prestolite 4 cyl - V6 & V8 - ignition (screw-down cap)
$31.49 $23.12 -
OEM Quicksilver/Mercury Thermostat 75692Q03
Mercury Marine / Quicksilver
$28.49 $24.49OEM Quicksilver/Mercury Thermostat 75692Q03 Quicksilver thermostat Kit 143 Degrees fits Mercury/Mariner V-6 135 hp, V-6 150 hp A904646>, V-6 175 hp C100861>, and V-6 200 hp 6435503>. Replaces Evinrude and Johnson OMC #434841. Fits 5 - 55 hp...- Part Number:
- 710-75692Q03
- Availability:
- In Stock - Ships same or next business day.
$28.49 $24.49 -
OEM Quicksilver/Mercury 4.3L Distributor Cap 898253T23
Mercury Marine / Quicksilver
$106.99 $77.16OEM Quicksilver/Mercury 4.3L Distributor Cap 898253T23 Fits MerCruiser 4.3L Engines with Multi-Point Electronic Fuel Injection (MPI). See your owner’s manual for replacement information and directions.- Part Number:
- 710-898253T23
- Availability:
- In Stock - Ships same or next business day.
- Application:
- MCM 4.3L MPI
$106.99 $77.16 -
OEM Quicksilver/Mercury 143 3-Cycle/V6 O/B Thermostat 75692
Mercury Marine / Quicksilver
$24.99 $21.49OEM Quicksilver/Mercury 143 3-Cycle/V6 O/B Thermostat 75692 Thermostat 75692 is for select 135 hp through 200hp Mercury and Mariner EFI and carburetor fueled 2-cycle, V-6 outboards. It is a 143 F degree thermostat. Thermostat only. Additional seals...- Part Number:
- 710-75692
- Availability:
- In Stock - Ships same or next business day.
- Description:
- Thermostat - 143¼
$24.99 $21.49 -
OEM MerCruiser Water Distribution Housing (Air Actuated - Standard Cooling) 863444T2
Mercury Marine / Quicksilver
$371.92 $265.68OEM MerCruiser Water Distribution Housing (Air Actuated - Closed Cooling) 863444T2 Commonly mis-ordered part! Please confirm fitment of MerCruiser parts with your serial number Photos and descriptions provided via Mercury may not always be accurate All...- Part Number:
- 710-863444T 2
- Availability:
- In Stock - Ships same or next business day.
$371.92 $265.68 -
OEM Quicksilver/Mercury Distributor Cap & Rotor Kit- Black Scorpion 805759T05
Mercury Marine / Quicksilver
$73.99 $53.78OEM Quicksilver/Mercury Distributor Cap & Rotor Kit- Black Scorpion 805759T05 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold...- Part Number:
- 710-805759T05
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Black Scorpion Tow Sports (s/n 0M391600 and up) and MX 6.2L Black Scorpion Tow Sports (s/n 0M391750 and up)
$73.99 $53.78 -
OEM Quicksilver/Mercury Prestolite Distributor Cap 392-9766Q 1
Mercury Marine / Quicksilver
$47.99 $34.97MerCruiser Cap-Distrib-Prestolite Ign 392-9766Q 1 Fits Marinized, V-8 MerCruiser Engines made by General Motors with Prestolite conventional ignition systems. See your owner’s manual for replacement information and directions.- Part Number:
- 710-392-9766Q 1
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Prestolite V-8 (screw-down cap)
$47.99 $34.97 -
OEM Quicksilver/Mercury Mallory Tune Up Kit 391-5090Q 1
Mercury Marine / Quicksilver
$46.99 $33.94MerCruiser Tune Up Kit Mallory Ign 391-5090Q 1 For marinized V-8 MerCruiser Engines Made by General Motors or Ford with Mallory Conventional Ignition Systems. See your owner’s manual for replacement information and directions.- Part Number:
- 710-391-5090Q 1
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Ford/GM V8's w/ Mallory single point ignition (tall cap)
$46.99 $33.94 -
OEM Quicksilver/Mercury Mallory Distributor Cap 391-5075Q 1
Mercury Marine / Quicksilver
$61.99 $44.89MerCruiser Cap-Distrib Mallory Ign 391-5075Q 1 Fits Marinized, V-8 MerCruiser Engines made by Ford Motor Company with Mallory Conventional Ignition Systems. See your owner’s manual for replacement information and directions.- Part Number:
- 710-391-5075Q 1
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Mallory V-8 point ignition (tall cap)
$61.99 $44.89 -
OEM Quicksilver/Mercury Spark Plug Wire Kit 84-816608Q78
Mercury Marine / Quicksilver
$104.49 $77.52OEM Quicksilver/Mercury Spark Plug Wire Kit 84-816608Q78 Spark plug set 816608Q78 is for use on MerCruiser Black Scorpion Tow Sports engines with Delco HEI ignition systems (1997 through 1998).- Part Number:
- 710-84-816608Q78
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Red wires - Fits Black Scorpion Tow Sports w/Delco HEI ignition (1997-1998)
$104.49 $77.52 -
OEM Quicksilver/Mercury Spark Plug Wires 84-816761Q 3
Mercury Marine / Quicksilver
$92.49 $68.94OEM Quicksilver/Mercury Spark Plug Wires 84-816761Q 3 Spark plug set 816761Q3 is for use on V-8 MerCruiser (RH) engines (305 and 350 CID)withThunderbolt IV ignition systems (1981 through 1993).- Part Number:
- 710-84-816761Q 3
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Fits GM V-8 305 - 350 cid engines (RH) with Thunderbolt IV ignition ('81-'93)
$92.49 $68.94 -
OEM Quicksilver/Mercury V8 High-Performance Spark Plug Wires 84-847701Q 7
Mercury Marine / Quicksilver
$114.99 $85.02OEM Quicksilver/Mercury V8 High-Performance Spark Plug Wires 84-847701Q 7 Spark plug set 847701Q7 is for use on V-8 MerCruiser High Performance engines (454, 502, 540 and 572 CID) with Thunderbolt IV ignition systems (1990 and newer).- Part Number:
- 710-84-847701Q 7
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Blue wires - Fits GM Hi-Perf V-8 454/502/540/572 cid engines w/ Thunderbolt IV ignition (1990 & newer)
$114.99 $85.02 -
OEM MerCruiser Thermostat Housing Gasket 27-47590Q01
Mercury Marine / Quicksilver
$1.40 $1.05MerCruiser Thermostat Housing Gasket 27-47590Q01 Please confirm fitment of MerCruiser parts with your serial numberPhotos and descriptions provided via Mercury may not always be accurateAll of our Mercury parts are sold and priced- Part Number:
- 710-27-47590Q01
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Renault 90 & GM in-line 4 & 6 cyl. Engines
$1.40 $1.05 -
OEM Quicksilver/Mercury Distributor Cap 815407Q02
Mercury Marine / Quicksilver
$41.33 $30.01OEM Quicksilver/Mercury Distributor Cap 815407Q02 This distributor cap kit contains the cap only. It fits marinized, V-6 MerCruiser Engines made by General Motors with Thunderbolt IV and V HEI Ignition Systems. See your owner’s manual for...- Part Number:
- 710-815407Q02
- Availability:
- In Stock - Ships same or next business day.
- Application:
- GM V-6 w/ Thunderbolt IV & V HEI ignitions
$41.33 $30.01 -
OEM Quicksilver/Mercury Spark Plug Wires 84-816761Q 9
Mercury Marine / Quicksilver
$115.99 $86.04OEM Quicksilver/Mercury Spark Plug Wires Kit 84-816761Q 9 Spark plug set 816761Q9 is for use on V-8 MerCruiser engines made by Ford or General Motors with conventional points ignition systems (1963 through 1982) anf Thunderbolt ignition...- Part Number:
- 710-84-816761Q 9
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Fits GM & Ford V-8 engines with conventional points ignition ('63-'82) and Thunderbolt ignition ('68-'76)
$115.99 $86.04 -
OEM Quicksilver/Mercury Spark Plug Wires 84-816761Q12
Mercury Marine / Quicksilver
$104.49 $77.46OEM Quicksilver/Mercury Spark Plug Wires 84-816761Q12 Spark plug set 816761Q12 is for use on V-8 MerCruiser tow Sports inboard engines (5.7L) made by General Motors with conventional points ignition systems (1985 through 1995).- Part Number:
- 710-84-816761Q12
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Fits MIE 5.7L Tow Sports with conventional point ignition ('85-'95)
Outboard Marine Corp. P/N: 503752-503755
$104.49 $77.46 -
Serpentine Belt and Pulley Kit 8M0150823 Belt& Metal Replacement Pulley
Mercury Marine / Quicksilver
$125.17 $122.00Serpentine belt and pulley kit 8M0150824 includes 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 applications. Replace worn or damaged belts to maintain...- Part Number:
- MM-57-8M0150823
$125.17 $122.00 -
OEM Quicksilver/Mercury Delco Cap & Rotor Kit 850484T 3
Mercury Marine / Quicksilver
$57.49 $41.62OEM Quicksilver/Mercury Delco Cap & Rotor Kit 850484T 3 This kit includes the distributor cap and rotor. It fits Marinized, V-6 MerCruiser Engines made by General Motors with Delco HEI ignition systems. See your owner’s manual for...- Part Number:
- 710-850484T 3
- Availability:
- In Stock - Ships same or next business day.
- Application:
- MerCruiser - Crusader -Volvo Penta GM 4.3L V6 w/ Delco EST ignition
$57.49 $41.62 -
OEM Quicksilver/Mercury Prestolite Tune Up Kit 392-6325Q 1
Mercury Marine / Quicksilver
$32.49 $23.67MerCruiser Tune Up Kit Prestolite Ign 392-6325Q 1 Fits MerCruiser Engines from Ford Motor Company in their 888 (serial number 3108723 and above) and 233 (serial number 4173000 and above) Series with Prestolite Conventional Ignition Systems having clip...- Part Number:
- 710-392-6325Q 1
- Availability:
- In Stock - Ships same or next business day.
- Application:
- Prestolite V-8 point ignition (clip-down cap)
$32.49 $23.67
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.