Engine & Drive Parts
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NGK Spark Plugs 3180 Spark Plug 3180
NGK Spark Plugs
$21.99 $11.66NGK Spark Plugs 3180 Spark Plug 3180Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-BPZ8HS15
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3180
- Pack:
- 10
- Pkg.:
- Boxed
$21.99 $11.66 -
NGK Spark Plugs 3230 Spark Plug Gold Br9Eg
NGK Spark Plugs
$13.79 $7.70NGK Spark Plugs 3230 Spark Plug Gold Br9EgRacing plugs feature a center electrode with a V-groove and a thicker ceramic shell for the high-heat applications in racing engines.Special center electrode...- Part Number:
- 41-BR9EG
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3230
- Pack:
- 4
$13.79 $7.70 -
NGK Spark Plugs 3322 Spark Plug 3322
NGK Spark Plugs
$6.49 $4.99NGK Spark Plugs 3322 Spark Plug 3322 Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-BR4HS
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3322
- Pack:
- 10
- Pkg.:
- Boxed
$6.49 $4.99 -
NGK Spark Plugs 3323 Spark Plug 3323
NGK Spark Plugs
$9.59 $5.97NGK Spark Plugs 3323 Spark Plug 3323Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-AR6FS
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3323
- Pack:
- 10
- Pkg.:
- Boxed
$9.59 $5.97 -
Sold Out, please call for ETA.
NGK Spark Plugs 3326 Spark Plug 3326
NGK Spark Plugs
$6.69 $4.52NGK Spark Plugs 3326 Spark Plug 3326Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-DR4HS
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3326
- Pack:
- 10
- Pkg.:
- Boxed
$6.69 $4.52 -
NGK Spark Plugs 3522 Spark Plug 3522
NGK Spark Plugs
$6.49 $4.30NGK Spark Plugs 3522 Spark Plug 3522Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-BR6S
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3522
- Pack:
- 10
- Pkg.:
- Boxed
$6.49 $4.30 -
Sold Out, please call for ETA.
NGK Spark Plugs 3530 Spark Plug Gold 3530
NGK Spark Plugs
$10.39 $8.14NGK Spark Plugs 3530 Spark Plug Gold 3530Racing plugs feature a center electrode with a V-groove and a thicker ceramic shell for the high-heat applications in racing engines.Special center electrode...- Part Number:
- 41-B9EG
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3530
- Pack:
- 4
$10.39 $8.14 -
NGK Spark Plugs 3710 Spark Plug 3710
NGK Spark Plugs
$6.29 $4.29NGK Spark Plugs 3710 Spark Plug 3710Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-B7S
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3710
- Pack:
- 10
- Pkg.:
- Boxed
$6.29 $4.29 -
Sold Out, please call for ETA.
NGK Spark Plugs 3722 Spark Plug 3722
NGK Spark Plugs
$3.99 $2.54NGK Spark Plugs 3722 Spark Plug 3722Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-BR5HS
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3722
- Pack:
- 10
- Pkg.:
- Boxed
$3.99 $2.54 -
NGK Spark Plugs 3725 Spark Plug 3725
NGK Spark Plugs
$6.69 $4.52NGK Spark Plugs 3725 Spark Plug 3725Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-BPR8HS
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3725
- Pack:
- 10
- Pkg.:
- Boxed
$6.69 $4.52 -
Sold Out, please call for ETA.
NGK Spark Plugs 3810 Spark Plug 3810
NGK Spark Plugs
$6.29 $5.50NGK Spark Plugs 3810 Spark Plug 3810Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-B8S
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3810
- Pack:
- 10
- Pkg.:
- Boxed
$6.29 $5.50 -
Sold Out, please call for ETA.
NGK Spark Plugs 3830 Spark Plug Gold 3830
NGK Spark Plugs
$12.79 $9.34NGK Spark Plugs 3830 Spark Plug Gold 3830Racing plugs feature a center electrode with a V-groove and a thicker ceramic shell for the high-heat applications in racing engines.Special center electrode...- Part Number:
- 41-BR10EG
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3830
- Pack:
- 4
$12.79 $9.34 -
Sold Out, please call for ETA.
NGK Spark Plugs 3981 Spark Plug 3981
NGK Spark Plugs
$18.49 $12.49NGK Spark Plugs 3981 Spark Plug 3981Designed specifically for the performance enthusiast. Iridium IX offers extreme ignitability, improved throttle response and superior anti-fouling.Fine-tipped...- Part Number:
- 41-BR9EIX
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3981
- Pack:
- 4
$18.49 $12.49 -
NGK Spark Plugs 4043 Spark Plug 4043
NGK Spark Plugs
$7.29 $4.59NGK Spark Plugs 4043 Spark Plug 4043V-Power plugs offer economical performance and improved ignitability over nickel spark plugs. OEM and racer approved.Lowers ignition system voltage...- Part Number:
- 41-ZFR4F11
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 4043
- Pack:
- 4
- Pkg.:
- Boxed
$7.29 $4.59 -
Sold Out, please call for ETA.
NGK Spark Plugs 4076 Spark Plug 4076
NGK Spark Plugs
$13.49 $9.25NGK Spark Plugs 4076 Spark Plug 4076Racing plugs feature a center electrode with a V-groove and a thicker ceramic shell for the high-heat applications in racing engines.Special center electrode...- Part Number:
- 41-R6254K105
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 4076
- Pack:
- 4
$13.49 $9.25 -
Sold Out, please call for ETA.
NGK Spark Plugs 4177 Spark Plug 4177
NGK Spark Plugs
$5.79 $4.93NGK Spark Plugs 4177 Spark Plug 4177V-Power plugs offer economical performance and improved ignitability over nickel spark plugs. OEM and racer approved.Lowers ignition system voltage...- Part Number:
- 41-TR6
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 4177
- Pack:
- 4
- Pkg.:
- Boxed
$5.79 $4.93 -
NGK Spark Plugs 4253 Spark Plub 4253
NGK Spark Plugs
$25.89 $14.44NGK Spark Plugs 4253 Spark Plub 4253- Part Number:
- 41-PZFR7GG
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 4253
- Pack:
- 4
$25.89 $14.44 -
NGK Spark Plugs 4291 Spark Plug 4291
NGK Spark Plugs
$7.29 $4.59NGK Spark Plugs 4291 Spark Plug 4291V-Power plugs offer economical performance and improved ignitability over nickel spark plugs. OEM and racer approved.Lowers ignition system voltage...- Part Number:
- 41-ZFR6F11
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 4291
- Pack:
- 4
- Pkg.:
- Boxed
$7.29 $4.59 -
NGK Spark Plugs 4522 Spark Plug 4522
NGK Spark Plugs
$6.69 $4.54NGK Spark Plugs 4522 Spark Plug 4522Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-BR9HS
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 4522
- Pack:
- 10
- Pkg.:
- Boxed
$6.69 $4.54 -
NGK Spark Plugs 4548 Spark Plug 4548
NGK Spark Plugs
$21.79 $11.54NGK Spark Plugs 4548 Spark Plug 4548Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-CR9EK
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 4548
- Pack:
- 10
- Pkg.:
- Boxed
$21.79 $11.54
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.