Engine & Drive Parts
-
Sold Out, please call for ETA.
NGK Spark Plugs 5880 Sparkplug 5880
NGK Spark Plugs
$5.69 $0.00NGK Spark Plugs 5880 Sparkplug 5880Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak performance and long life.•?Triple gasket sealing process...- Part Number:
- 41-BR10ECS
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 5880
- Pack:
- 10
- Pkg.:
- Boxed
$5.69 $0.00 -
Sold Out, please call for ETA.
NGK Spark Plugs 5886 Spark Plug 5886
NGK Spark Plugs
$24.19 $0.00NGK Spark Plugs 5886 Spark Plug 5886Designed specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling.Fine-tipped iridium-center electrode ensures high durability and...- Part Number:
- 41-BR8ECSIX
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 5886
- Pack:
- 4
$24.19 $0.00 -
NGK Spark Plugs 5899 Spark Plug 5899
NGK Spark Plugs
$29.29 $14.74NGK Spark Plugs 5899 Spark Plug 5899Original equipment on many late model applicationsIridium at the fine-wire center electrode and platinum at the ground electrode provides maximum durability and performanceThe platinum at the ground electrode adds...- Part Number:
- 41-IZFR5J
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 5899
- Pack:
- 4
$29.29 $14.74 -
NGK Spark Plugs 5913 Spark Plug 5913
NGK Spark Plugs
$7.09 $4.42NGK Spark Plugs 5913 Spark Plug 5913 V-Power plugs offer economical performance and improved ignitability over nickel spark plugs. OEM and racer approved. Lowers ignition system voltage requirements Increased fuel economy High durability resists...- Part Number:
- 41-ZFR7F
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 5913
- What's in the Box:
- (1) Spark Plug
$7.09 $4.42 -
NGK Spark Plugs 5946 Plug Yam Atv 5946
NGK Spark Plugs
$19.79 $10.26NGK Spark Plugs 5946 Plug Yam Atv 5946Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak performance and long life.•?Triple gasket sealing process...- Part Number:
- 41-LMAR6A9
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 5946
- Pack:
- 10
- Pkg.:
- Boxed
$19.79 $10.26 -
Sold Out, please call for ETA.
NGK Spark Plugs 6014 Spark Plug 6014
NGK Spark Plugs
$24.19 $0.00NGK Spark Plugs 6014 Spark Plug 6014Designed specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling.Fine-tipped iridium-center electrode ensures high durability and...- Part Number:
- 41-BR9ECSIX5
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6014
- Pack:
- 4
$24.19 $0.00 -
Sold Out, please call for ETA.
NGK Spark Plugs 6263 Spark Plug Cr9E
NGK Spark Plugs
$8.89 $0.00NGK Spark Plugs 6263 Spark Plug Cr9EChosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak performance and long life.•?Triple gasket sealing process...- Part Number:
- 41-CR9E
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6263
- Pack:
- 10
- Pkg.:
- Boxed
$8.89 $0.00 -
NGK Spark Plugs 6289 Spark Plug 6289
NGK Spark Plugs
$19.99 $10.66NGK Spark Plugs 6289 Spark Plug 6289Original equipment on many late model applicationsIridium at the fine-wire center electrode and platinum at the ground electrode provides maximum durability and performanceThe platinum at the ground electrode adds...- Part Number:
- 41-CR9EIA9
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6289
- Pack:
- 4
$19.99 $10.66 -
Sold Out, please call for ETA.
NGK Spark Plugs 6326 Spark Plug Bp6Hs10
NGK Spark Plugs
$4.09 $0.00NGK Spark Plugs 6326 Spark Plug Bp6Hs10Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak performance and long life.•?Triple gasket sealing process...- Part Number:
- 41-BP6HS10
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6326
- Pack:
- 4
- Pkg.:
- Boxed
$4.09 $0.00 -
NGK Spark Plugs 6364 Spark Plug #6364
NGK Spark Plugs
$5.49 $3.84NGK Spark Plugs 6364 Spark Plug #6364Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak performance and long life.•?Triple gasket sealing process...- Part Number:
- 41-BKR6ES
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6364
- Pack:
- 4
- Pkg.:
- Boxed
$5.49 $3.84 -
Sold Out, please call for ETA.
NGK Spark Plugs 6376 Spark Plug 6376
NGK Spark Plugs
$10.89 $0.00NGK Spark Plugs 6376 Spark Plug 6376V-Power plugs offer economical performance and improved ignitability over nickel spark plugs. OEM and racer approved.Lowers ignition system voltage requirementsIncreased fuel economyHigh durability resists electrical...- Part Number:
- 41-LFR5A11
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6376
- Pack:
- 10
- Pkg.:
- Boxed
$10.89 $0.00 -
Sold Out, please call for ETA.
NGK Spark Plugs 6422 Spark Plug 6422
NGK Spark Plugs
$4.09 $0.00NGK Spark Plugs 6422 Spark Plug 6422Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak performance and long life.•?Triple gasket sealing process...- Part Number:
- 41-BPR7HS
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6422
- Pack:
- 10
- Pkg.:
- Boxed
$4.09 $0.00 -
NGK Spark Plugs 6500 Spark Plug 6500
NGK Spark Plugs
$5.49 $3.95NGK Spark Plugs 6500 Spark Plug 6500Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak performance and long life.•?Triple gasket sealing process...- Part Number:
- 41-CR6HSB
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6500
- Pack:
- 10
- Pkg.:
- Boxed
$5.49 $3.95 -
NGK Spark Plugs 6502 Spark Plug 6502
NGK Spark Plugs
$28.49 $14.29NGK Spark Plugs 6502 Spark Plug 6502Original equipment on many late model applicationsIridium at the fine-wire center electrode and platinum at the ground electrode provides maximum durability and performanceThe platinum at the ground electrode adds...- Part Number:
- 41-IFR5L11
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6502
- Pack:
- 4
$28.49 $14.29 -
NGK Spark Plugs 6544 Spark Plug 6544
NGK Spark Plugs
$29.29 $14.74NGK Spark Plugs 6544 Spark Plug 6544Original equipment on many late model applicationsIridium at the fine-wire center electrode and platinum at the ground electrode provides maximum durability and performanceThe platinum at the ground electrode adds...- Part Number:
- 41-IMR9D9H
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6544
- Pack:
- 4
$29.29 $14.74 -
Sold Out, please call for ETA.
NGK Spark Plugs 6615 Spark Plug Solid 6615
NGK Spark Plugs
$4.09 $0.00NGK Spark Plugs 6615 Spark Plug Solid 6615V-Power plugs offer economical performance and improved ignitability over nickel spark plugs. OEM and racer approved.Lowers ignition system voltage requirementsIncreased fuel economyHigh durability resists...- Part Number:
- 41-BR7ESSOLID
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6615
- Pack:
- 4
- Pkg.:
- Boxed
$4.09 $0.00 -
Sold Out, please call for ETA.
NGK Spark Plugs 6668 Spark Plug 6668
NGK Spark Plugs
$10.89 $0.00NGK Spark Plugs 6668 Spark Plug 6668Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak performance and long life.•?Triple gasket sealing process...- Part Number:
- 41-LFR6A
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6668
- Pack:
- 10
- Pkg.:
- Boxed
$10.89 $0.00 -
NGK Spark Plugs 6684 Iridium Ix Spk Plug Bpr8Eix
NGK Spark Plugs
$17.29 $9.36NGK Spark Plugs 6684 Iridium Ix Spk Plug Bpr8EixDesigned specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling.Fine-tipped iridium-center electrode ensures high...- Part Number:
- 41-BPR8EIX
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6684
- Pack:
- 4
$17.29 $9.36 -
NGK Spark Plugs 6689 Spark Plug 6689
NGK Spark Plugs
$19.79 $10.26NGK Spark Plugs 6689 Spark Plug 6689Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak performance and long life.•?Triple gasket sealing process...- Part Number:
- 41-CR5EH9
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6689
- Pack:
- 10
- Pkg.:
- Boxed
$19.79 $10.26 -
Sold Out, please call for ETA.
NGK Spark Plugs 6775 Spark Plug 6775
NGK Spark Plugs
$5.79 $4.04NGK Spark Plugs 6775 Spark Plug 6775Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak performance and long life.•?Triple gasket sealing process...- Part Number:
- 41-BPR6ESBLYB
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6775
- Pack:
- 6
- Pkg.:
- Blister
$5.79 $4.04
Spark Plugs for Power Boats
Keep your engine performing at its best with high-quality boat spark plugs designed for outboards, inboards, and sterndrives. At PowerBoatSupply.com, we carry a full selection of NGK spark plugs, AC Delco spark plugs, and other trusted marine brands to fit a wide variety of engines. Whether you’re replacing a single spark plug for a boat motor or outfitting an entire set, you’ll find durable, OEM-recommended options that deliver reliable ignition, smooth starts, and long-lasting performance on the water.
Why Spark Plugs Matter for Marine Engines
Spark plugs are a small but critical part of your boat’s ignition system. They provide the spark that ignites the fuel-air mixture, powering your engine forward. Worn or fouled boat motor spark plugs can lead to misfires, poor fuel economy, hard starts, or even engine damage. That’s why routine replacement with the right spark plug type is essential for keeping your boat running smoothly all season long.
Our Spark Plug Selection
We stock a wide range of marine spark plugs to cover all your needs, including:
- Standard spark plugs – affordable and dependable for routine use
- V-Power spark plugs – improved ignitability for better performance
- Iridium spark plugs – advanced durability and longer service life
- OEM-specific plugs – designed to fit Mercury, MerCruiser, and other popular marine engines
From Mercury outboards to MerCruiser sterndrives, our inventory includes the correct Mercury boat motor spark plugs to keep your engine running at peak efficiency.
When to Replace Your Spark Plugs
Most marine experts recommend inspecting and replacing spark plugs every season, or at least every 100 hours of operation. Signs that your plugs need replacement include difficulty starting, engine hesitation, reduced fuel efficiency, or visible carbon buildup on the electrodes. Swapping them out regularly is an inexpensive way to protect your boat engine and prevent costly repairs.
Shop Spark Plugs Online With Confidence
PowerBoatSupply.com makes it easy to find the exact boat spark plugs you need. With fast shipping, competitive pricing, and our decades of marine parts experience, we’re your trusted source for boat motor spark plugs and engine tune-up parts. Order today and get back on the water with confidence.