Now that you are here, you must be looking for the best marine spark plugs! If you aren’t for it, you shall use our search and look for the topic you are interested in. As this piece is a lengthy one and covers a few more aspects other than the best list, they are the best marine spark plugs brands in United States of America and a buyer’s guide for making an informed buying decision.
Before we begin with the list, We ask you to make a list of things that you are looking for in a marine spark plugs. It could be anything which you’ll require when doing tasks. This will help you have some clarity about the important things and will help you save money by not overspending on the features you won’t use or a product that has more features!
You surely are here for being able to make an informed buying decision when it comes to marine spark plugs and you must be looking for the list, We know that! But before we begin, we’d like to tell you that, this is the most unbiased list ever, it has specs, lists down the features of the marine spark plugs, best brands and has a dedicated buyer’s guide for people in United States of America.
Full Disclosure: This article might have a few external links to Amazon and other informative sources. When you make a purchase on Amazon using our link, we’ll earn a small fee without you having to pay extra for the item. This helps us keep the site running and publishing more awesome content, add more research and never let people buy bad-quality products!
Best marine spark plugs in 2021
1. Quicksilver 97182Q NGK BUHW-2 Surface Gap Spark Plug, 1-Pack -Spark Plugs
By Quicksilver
More Pictures- Check your engine owner’s manual for the correct spark plug and use only the plug as recommended by your engine’s original equipment manufacturer
- NGK BUHW-2 surface gap plugs feature a tungsten center electrode and a solid terminal
- NGK Trivalent metal plating also provides superior anti-corrosion in the marine environment and anti-seizing for easier removal
- Don’t just clean used spark plugs, replace them with new plugs for better performance
- Replace all the engine plugs at the same time
2. Champion 828M Pack of 4 Copper Marine Spark Plugs (QL77JC4) -Automotive
By Champion
- Resists fouling and provides superior corrosion resistance
- Features a copper core electrode that provides increased conductivity and heat control while delivering good overall wear characteristics
- Genuine OEM Champion parts
- Pack of 4
3. NGK 3133 Standard Spark Plug – BPZ8HS-10, 1 Pack -Automotive
By NGK
- High alumina ceramics for better heat transfer and electrical insulation
- Resists carbon buildup and pre-ignition
- Designed to operate over a much wider heat range than ordinary plugs
- Solid copper core and nickel tipped electrode provide a longer plus life
- Fit type: Vehicle Specific
4. Champion QL77JC4 (828M) Pack of 8 Spark Plugs -Automotive
By Champion
- Thread Size: 14mm, Seat Type: Gasket, Resistor Type: Inductive
- Pack of 8
- Please consult owner’s manual for proper part number identification and proper installation
- Reach: 12.7mm (1/2″), Hex Size: 13/16″ (21mm), Terminal Type: Solid, Gap: .039″ (1.0mm)
- Genuine OEM Champion Spark Plugs
5. Quicksilver 898264001 AC Delco MR43T Spark Plug, 1-Pack -Automotive
By Quicksilver
- Nickel-chrome alloy sheathing to help prevent corrosion on center electrode
- Ribbed suppressor seal extends resistance and helps prevent spark ‘flash over†and misfires
- Copper core provides great heat transfer and helps maximize plug durability
6. Champion 827M L76V Marine Spark Plug Pack of 4 -Automotive
By Champion827M
- PACK OF 4
- Genuine brand, not used, may not be in original packaging.
7. ACDelco MR43LTS Specialty Marine Spark Plug (Pack of 1) -Automotive
By ACDelco
- Check your engine owner’s manual for the correct spark plug and use only the plug as recommended by your engine’s original equipment manufacturer
- Replace all the engine plugs at the same time
- Don’t just clean used spark plugs, replace them with new plugs for better performance
- Made by AC Delco with nickel alloy tip, copper core and ribbed suppressor seal for durability and performance
- Fit type: Vehicle Specific
8. Champion 827M L76V Marine Spark Plug Pack of 6 -Automotive
By Champion827M
- Genuine brand, not used, may not be in original packaging.
- PACK OF 6
10. Nkg Spark Plug Marine, Motorcycle, Watersport 4 Pack BR8HS-10 -Automotive
By NGK
- Sold in packs of 4
11. NGK 3481 Pack of 4 Spark Plugs (DCPR6E) -Automotive
By NGK
- Pack of 4
- Consult owners manual for proper part number identification and proper installation
- Genuine OEM NGK spark plugs
12. QL78YC SPARK PLUG, Pack of 4 -Spark Plugs
By Champion
- Sold 4 per pack
- QL78YC, CHPQL78YC
- CHAMPION SPARK PLUG CO
13. NGK 4838 Pack of 4 Spark Plugs BP8H-N-10 -Automotive
By NGK
- Pack of 4
- Genuine OEM NGK parts
- Tip material: Nickle with V-groove
14. Quicksilver 97180Q NGK BUHW Surface Gap Spark Plug, 1-Pack -Spark Plugs
By Quicksilver
- NGK BUHW surface gap plugs feature a tungsten center electrode and a solid terminal
- Don’t just clean used spark plugs, replace them with new plugs for better performance
- Check your engine owner’s manual for the correct spark plug and use only the plug as recommended by your engine’s original equipment manufacturer
- Replace all the engine plugs at the same time
- NGK Trivalent metal plating also provides superior anti-corrosion in the marine environment and anti-seizing for easier removal
15. NGK Spark Plug LFR5A-11- Set of 4 -Automotive
By NGK Japan
- Set of 4 NGK Spark Plugs.ÿ
- Designed by NGK Japan, 100% Genuine.ÿ
- Count on NGK Spark Plugs to deliver the finest quality products and customer service.
- When you require the best, count on The World Leader in spark plug technology NGK Spark Plugs.ÿ
- NGK offers the highest quality products for virtually every vehicle application
16. Quicksilver 816761Q17 Spark Plug Wire Kit -Spark Plugs
By Quicksilver
- Produced by Mercury Marine to our stringent original equipment manufacturer specifications to maximize the performance of your Mercury and Mariner outboard or MerCruiser stern drive
- Designed for efficiency, endurance and durability in a marine engine environment
- Complete set of spark plug wires with boots at spark plug end
- Tailored to reach correct plug location
17. NGK 4838 V-Power Spark Plug – BP8H-N-10, 1 Pack -Spark Plugs
By NGK
- Cold-rolled threads to prevent cross-threading and damage to cylinder heads; Trivalent plating eliminates need for anti-seize
- V-groove center electrode improves ignitability and reduces quenching
- High-grade alumina silicate ceramic insulator for superior strength and heat transfer
- 98% pure copper core increases heat dissipation for reliable starts and prevents spark plug from overheating
- Quantity: 1 per package
19. Sierra International 18-8802-1 Spark Plug Wire Set – 8 Cylinder, Conventional Ignition -Automotive
- Superior RFI suppression for the most sensitive electronic system
- Premium silicone jacketing and boots for the ultimate in high temperature protection
- Durable stainless steel wound conductor for maximum horsepower and engine performance
- Fit type: Universal Fit
- Kevlar core for maximum durability and long life
- Corrosion resistant stainless steel spark plug and distributor terminals for maximum conductivity
20. Champion Copper Marine Spark Plug 828M QL77JC4 Pack of 6 -Automotive
- Includes (6) Spark Plug
- Consult owners manual for proper part number identification and proper installation
- Genuine Champion Spark Plugs
- Thread: 14mm, Reach: 12.7mm, Seat type: flat, Hex size: 21mm, Tip configuration: non projected, Type: Standard, Terminal type: Solid, New, Bulk Packed
- Please refer to list for compatibility
21. Champion 932M QL82YC Marine Spark Plug Pack Of 4 -Automotive
- PACK OF 4
- 932M QL82YC
22. Sierra International 18-8819-1 Premium MagForce 7″ Marine Spark Plug Wire Lead for Mercury/Mariner and Chrysler Force Engines (18-1202-9) -Automotive
- Kevlar core for maximum durability and long life AND Durable stainless steel wound conductor for maximum horsepower and engine performance
- Sierra’s MagForce Ignition Wires are Electronics Friendly protecting all of your electronic devices and electronic engine controls from RFI and EMI while delivering the maximum amount of Voltage.
- Fit type: Universal Fit
- Corrosion resistant stainless steel spark plug and distributor terminals for maximum conductivity
- Premium silicone jacketing and boots for ultimate high temperature protection AND Superior RFI suppression for the most sensitive electronic system
23. NGK Br8hs-10 SPK Plug (Pack of 6) -Automotive
By NGK
- Hex Size: 13/16″ (21mm), Terminal Type: Removable Nut, Overall Height: ISO, Gap:.039″ (1.0mm)
- Includes (6) BR8HS-10 Spark Plugs
- Material: Nickel, Type: Standard, Size: 2.5mm, Projection: Non-Projected
- NGK standard plugs are constructed for longer life and optimum performance.
- Thread Size: 14mm, Thread Pitch: 1.25mm, Seat Type: Gasket, Resistor Value: 5K Ohm, Reach: 12.7mm (1/2″).
24. Spark Plug AC DELCO, Sold in Multiples of 8, Pack of 8 -Spark Plugs
By ACDelco
- AC/Delco MR43T, ACDMR43T
- Sold in multiples of 8
- MR43T SPARK PLUG AC DELCO, 8 Pack
25. Car Spark Plug Tester Dual Holes Spark Tester Working Frequency 500-6000rpm Spark Plug Tool for 12V Gasoline Vehicles Ignition Coil Tester with A Protective Cover, Spark Plug Not Included -Spark Plugs
By DUOYI
- 5.[ Coil Tester With A Protective Cover ]: In order to make the process of use safer, the spark plug tester comes with a transparent protective cover.
- Test hole inner size: 10mm.
- 4.[ Ignition Tester For 12V Gasoline Vehicles Car Spark Plugs ]: This spark plug tester is suitable for most 12v gasoline car spark plugs.
- 1.[ Spark Plug Tester For Small Engines Test Spark Plug Performance ]: The spark tester mainly tests the performance of the spark plug by simulating the ignition of the car, thereby deciding whether to replace the spark plug.
- 2.[ Dual Holes Spark Plug Tester ]: In order to be able to see more clearly whether the performance of the spark plug is good, the spark plug tester has a dual-hole test function
- Just put a brand-new spark plug and a spark plug to be tested into the test hole respectively, and the performance of the spark plug can be tested quickly and accurately
- 3.[ Adjustable Working Frequency Spark Tester ]: The working frequency of the spark tester small engine is 500-6000rpm
- Its working frequency can be adjusted through the knob, which is very convenient.
26. PARTSRUN New High Performance Premium Marine Spark Plug Wire 9″ for OMC Johnson Evinrude Spark Plug Wire Leads Sierra 18-5231-1 ZF701 -Spark Plugs
By PARTSRUN
- PARTSRUN Part Easier to insall and works perfect！Make Your Engine Great Again！
- PARTSRUN 100% New Quality Guaruntee！
- Ships Fast From The USA,We will answer any questions in 24 Hours!
- PARTSRUN Part Repalces OEM Part Save Your Time and Money！
- Marine Spark Plug Wire 9″ for OMC Johnson Evinrude Spark Plug Wire Leads Sierra 18-5231-1
27. New NGK Standard Spark Plug BR7HS10, 1098 Set of 4 Spark Plugs -Automotive
By NGK
- Sold in packs of 4
28. PARTSRUN Hi Performance 18-8819-1 Premium MagForce 7″ Marine 7MM Spark Plug Wire Lead for Mercury/Mariner and Chrysler Force Engines,ZF695 -Wire Sets
By PARTSRUN
- PARTSRUN Part Easier to insall and works perfect！Make Your Engine Great Again！
- Hi Performance 18-8819-1 Premium MagForce 7″ Marine 7MM Spark Plug Wire Lead for Mercury/Mariner and Chrysler Force Engines,ZF695
- Ships Fast From The USA,We will answer any questions in 24 Hours!
- PARTSRUN Part Repalces OEM Part Save Your Time and Money！
- PARTSRUN 100% New Quality Guaruntee！
29. PARTSRUN Performance Premium Marine Spark Plug Wire 6″ for OMC Johnson Evinrude Spark Plug Wire Leads Sierra 18-8816-1 ZF478 -Wire Sets
By PARTSRUN
- Ships Fast From The USA,We will answer any questions in 24 Hours!
- Make Your BOAT Running like new！
- Marine Spark Plug Wire 6″
- For OMC Johnson Evinrude Spark Plug Wire Leads Sierra 18-8816-1 ZF478NEW
- PARTSRUN 100% New Spark Plug Wire,Easy to install & Works Great!
30. Champion QL78YC (938M) Marine 8 Pack -Sports & Outdoors
By Champion
- Pack of 8
- Copper Core Center Electrode Allows for Increased Conductivity and Heat Control.
- Conventional Spark Plug with Nickel Alloy Electrodes
- Designed For Marine Applications
31. NGK 5126 Spark Plug – B8HS-10, 4 Pack -Automotive
By NGK
- High alumina ceramics for better heat transfer and electrical insulation
- Patented triple gasket sealing process eliminates the possibility of combustion gas leakage
- Designed to operate over a much wider heat range than ordinary plugs
- Resists carbon buildup and pre-ignition
- Solid copper core and nickel tipped electrode provide a longer plus life
- Fit type: Vehicle Specific
33. Champion 838M QL78V Marine Spark Plug Pack Of 4 -Automotive
- PACK OF 4
- 838M QL78V
34. Powtol (Pack of 2 14 132 11-S DCPR6E Spark Plug for KH1413211S NGK 3481 -Wire Sets
By Powtol
- Package include 2 spark plug
- Compatible with Models: NGK DCPR6E 3481
- Compatible with Models: Kohler 14 132 11-S KH1413211S
35. New AC Delco OEM Part# 862029 MR43LTS @8 Compatible With Mercury Mercruiser Quicksilver -Automotive
By ACDelco
- AC Resistor Spark Plug #MR43LTS
36. Champion Copper Plus 71 Spark Plug (Pack of 1) -Automotive
By Champion
- Built to ISO and SAE standards for proven performance
- Copper core center electrode allows for accurate control of heat range for longer life
- Copper Plus – Dependable Performance and Durability
- Superior corrosion resistance
37. Champion Copper Marine Spark Plug 821M L77JC4 Pack of 6 -Automotive
- Consult owners manual for proper part number identification and proper installation
- Genuine Champion Spark Plugs
- Thread: 14mm, Threadeach: 12.7mm, Seat type: flat, Hex size: 21mm, Type: Standard, Terminal type: Solid, New, Bulk Packed
- Includes (6) Spark Plug
- Please refer to list for compatibility
38. NGK 4551 Pack of 10 Spark Plugs (BR9HS-10) -Automotive
By NGK
- Copper core; Nickel electrode tip; Hex size: 13/16″; Pre-Gap size: 0.040 inch
- Pack of 10
39. Champion L77JC4 Pack of 4 Spark Plugs -Spark Plugs
By Champion
- Replaces various spark plugs including: AC Delco M40FFX, M41FF, S40F, Accel 156, Autolite 2634, 4092, Beck Arnley 176-5006, Beru 14Z-3AU, Beru Z37, Bosch 241256512, 241256519, W250T1, W275T1, W280S1S, W280T13S, W340S1S, W3AC, W3AS, W4A, W4A1, W4A2, W4A5, W4AC, W4AS, WO8AS, Brisk N14C-1, Champion L3G, L4G and various others
- Genuine OEM Champion Spark Plugs
- Pack of 4
40. Boating Accessories New Premium Marine Spark Plug Wire Leads Sierra 18-8816-1 Application Johnson/Evinrude – 6″ Wire -Spark Plugs
- Corrosion resistant stainless steel spark plug and distributor terminals for maximum conductivity
- Kevlar core for maximum durability and long life AND Durable stainless steel wound conductor for maximum horsepower and engine performance
- Replaces: OMC 582365
- Spark Plug Wire is 6 Inches in Length and the Wire’s Conductive Center is Carrier Reinforced to Ensure Conductor Integrity
- Premium silicone jacketing and boots for ultimate high temperature protection AND Superior RFI suppression for the most sensitive electronic system
41. Sierra International 18-5227-1 Premium MagForce 9″ Marine Spark Plug Wire Lead for Mercury/Mariner Outboard Engines -Automotive
- Corrosion resistant stainless steel spark plug and distributor terminals for maximum conductivity
- Fit type: Universal Fit
- Replaces: Mercury 84-813715A1
- Spark Plug Wire is 9 Inches in Length and the Ignition Wire’s Core is 7mm in Diameter
- Kevlar core for maximum durability and long life AND Durable stainless steel wound conductor for maximum horsepower and engine performance
- Premium silicone jacketing and boots for ultimate high temperature protection AND Superior RFI suppression for the most sensitive electronic system
42. PARTSRUN 2PCS Performance Premium Marine Spark Plug Wire 6″ for OMC Johnson Evinrude Spark Plug Wire Leads Sierra 18-8816-1 ZF478V -Spark Plugs
By PARTSRUN
- PARTSRUN Ships Fast From The USA,We will answer any questions in 24 Hours!
- PARTSRUN 2PCS Performance Premium Marine Spark Plug Wire 6″ for OMC Johnson Evinrude Spark Plug Wire Leads Sierra 18-8816-1 ZF478V
- PARTSRUN Part Repalces OEM Part Save Your Time and Money！
- PARTSRUN Part Easier to insall and works perfect！Make Your Engine Great Again！
- PARTSRUN 100% Good Quality Guaruntee！
43. 10.5 MM High Performance Spark Plug Wire Set Replacement for HEI SBC BBC 350 383 454 Electronic Ignition HEI Plug Wires -Spark Plugs
By Anxingo
- We support 24 hours online customer service.
- Part NumberManufacturer Part Number: SP10-390-1024
- WarrantyWe offer lifetime replacement guarantee.If you ever have any issues, simply contact us for a free replacement or refund
- Fitment10.5mm High Performance Racing Spark Plug; Universal Set For SBC & BBC Chevrolet Engines
- MaterialThese 10.5mm wires feature high-temperature 100% pure silicone insulator outer layer!
- Package includesElectronic Ignition HEI Plug Wires, 90 Degree HEI Style Boots on Distributor with Straight Spark Plug Boots
44. 4 Wire Set Marine Spark Plug Wire Lead, Fits for Johnson Evinrude 90 115 HP, Outboard Engines OE Replacement 18-8839 9-28092, Premium Ignition Spark Plug Wire Set -Spark Plugs
By Nahntaipy
- Excellent Function: The spark plug wire is used as the medium between the ignition coil and the spark plug, to power the engine, it can pass the high voltage fire divided by the distributor to the spark plug, and then push the engine to rotate | Damage to the spark plug wire of the engine will cause the engine to misfire, the phenomenon that causes the engine to shake, timely replacement of damaged spark plug wires can extend the life of the engine and reduce fuel waste.
- OEM Design, Direct Fit: Made of premium silicone and equipped with stainless steel terminals, the pure silicone protective cover provides maximum thermal protection | Even though this is not a genuine original equipment spark plug wire, but it works even better and lasts longer at a much lower price | Save time and hundreds of dollars by replace spark plug wire assembly parts yourself | Packing include 4 spark plug wire.
- Customer Service: You will get 24-months service, hassle-free return and money back policy, buy with confidence! If you have any questions, please contact us by email, we will reply you within 12 hours.
- Boat Wire Technology Plug Wire Kit Fits the Following Vehicles: The ignition spark plug wire set fits for Johnson Evinrude 90, 115 HP 4 cyl | Please check the fitment before placing orders, thanks.
- Replace OE Number: Plug wire set boat premium wire replacement part number 18-8839, 9-28092 | Great replacement for a proper fit and easy installation, quality materials used, meets or exceeds OEM standards, 100% rigorously tested before shipping.
45. PARTSRUN Hi Performance 18-5227-1 Premium MagForce 9″ Marine 7MM Spark Plug Wire Lead for Mercury/Mariner Outboard Engines Replaces Mercury 84-813715A1,ZF696 -Spark Plugs
By PARTSRUN
- PARTSRUN Part Easier to insall and works perfect！Make Your Engine Great Again！
- Hi Performance 18-5227-1 Premium MagForce 9″ Marine 7MM Spark Plug Wire Lead for Mercury/Mariner Outboard Engines Replaces Mercury 84-813715A1,ZF696
- PARTSRUN 100% New Quality Guaruntee！
- PARTSRUN Part Repalces OEM Part Save Your Time and Money！
- Ships Fast From The USA,We will answer any questions in 24 Hours!
46. Champion 876M QL16V Marine Spark Plug Pack Of 4 -Automotive
- 876M QL16V
- PACK OF 4
47. NGK 3579 Standard Spark Plug – BZ7HS-10, 1 pack -Automotive
By NGK
- Resists carbon buildup and pre-ignition
- Patented triple gasket sealing process eliminates the possibility of combustion gas leakage
- High alumina ceramics for better heat transfer and electrical insulation
- Designed to operate over a much wider heat range than ordinary plugs
- Solid copper core and nickel tipped electrode provide a longer plus life
Marine spark plugs – The Buyer’s Guide
You must have checked the above list, aren’t you mind-blown by the quality of products? Well, if you are then here’s a secret formula which we’ve used to choose them. You can use them too! The best part is, it works for all the product purchases you make! Besides, wouldn’t it be helpful to you, if you knew the factors we’ve considered to choose the marine spark plugs in the above list? So shall we begin with the guide and help you learn about the important factors?
1. Does it have the features you need?
Wait for a minute before you buy the marine spark plugs, check if it has all the features in your requirement list! If it doesn’t have them, then you should avoid buying that particular model and start looking for an alternative. We always suggest our editors to make a list of important features before adding a product to a list and based on the feature, the quality of the product, brand-assurance, rank it! So if it has all you need, you should not mind paying a bit extra. However, if you end up buying the best marine spark plugs which doesn’t have the feature you need the most, then it won’t make sense! Would it? To us, it wouldn’t! That’s why you should make up a list which includes the features you are looking for, technical specifications if any, etc and come up with a budget.
2. Budget and Price Match
Well, you obviously can’t buy the best marine spark plugs with a low budget. That’s why it’s important to make note of all the important features, specs, factors and come up with a budget. Once you are ready with it, look for the products which are either equal to your budget or are close to it. Stick to the budget, because while browsing, you’ll see a model which is slightly better and has an additional feature with a really small price difference. Well, in that case you’ll have to calculate the price of the product which has all the required features and the marine spark plugs with the additional features. See if the difference in amount is worth for the feature? If you don’t have second thoughts, you shall probably increase your budget.
3. Warranty and Brand
Most of the marine spark plugs industry experts we got in touch suggested us to always buy the one which comes from a reputable brand. They also explicitly asked us to include the best brands so that users don’t buy the models from unknown brands or non-reputable companies. Because marine spark plugs from an unknown brand might be cheap at first glance, but could have high-maintenance and could cost a lot in repairs.
Another benefit of buying a marine spark plugs from a reputable brand would be warranty. Most of the marine spark plugs from reputable brands come with good warranty. However, cheap products do come with a warranty, but claiming it can be a herculean task. That’s why buy the models which come from known brands and have good warranty.
4. Check for Reviews and Ratings
Back then when the Internet wasn’t as big as it is today, local stores charged high and even ended up selling the products which sucked or wasn’t future proof. It’s because the salesman threw technical terms and confused the buyer. But nowadays, there are sites like ours which does all the research and lists down the best models and there are eCommerce stores like Amazon which has user reviews which can be read to know the experience of the user with that particular marine spark plugs. Isn’t it great?
The Verdict
We hope that you loved the marine spark plugs we’ve listed in our best list. If it has been helpful, please bookmark our website and share it with people you know whenever they plan to buy something.
To wrap up this guide,
- If you are looking for the best marine spark plugs: You shall consider going for Quicksilver 816761Q17 Spark Plug Wire Kit
- If you want the one which has similar features to the best, then you shall consider going for Sierra International 18-8802-1 Spark Plug Wire Set – 8 Cylinder, Conventional Ignition
- If you want a marine spark plugs which is “value for money” then you shall go for the Champion Copper Marine Spark Plug 821M L77JC4 Pack of 6
- If you want the cheapest marine spark plugs then the Quicksilver 898264001 AC Delco MR43T Spark Plug, 1-Pack should be the best one for your needs!
