Engine & Drive Parts
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Sold Out, please call for ETA.
NGK Spark Plugs Bkr5Es Spark Plug 2460
NGK Spark Plugs
$6.39 $5.08NGK Spark Plugs Bkr5Es Spark Plug 2460 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-BKR5ES
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 2460
- Pkg.:
- Boxed
- What's in the Box:
- (1) Spark Plug
$6.39 $5.08 -
Sold Out, please call for ETA.
NGK Spark Plugs 1157 Spark Plug 1157
NGK Spark Plugs
$10.39 $9.00NGK Spark Plugs 1157 Spark Plug 1157 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-BR8HCS10
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 1157
- Pkg.:
- Boxed
- What's in the Box:
- (1) Spark Plug
$10.39 $9.00 -
NGK Spark Plugs 3951 Spark Plug 3951
NGK Spark Plugs
$7.69 $4.71NGK Spark Plugs 3951 Spark Plug 3951 V-Power plugs offer economical performance and improved ignitability over nickel spark plugs. OEM and racer approved. Lowers ignition system voltage...- Part Number:
- 41-TR55
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3951
- Pkg.:
- Boxed
- What's in the Box:
- (1) Spark Plug
$7.69 $4.71 -
NGK Spark Plugs 4095 Spark Plug Iridium 4095
NGK Spark Plugs
$30.69 $16.85NGK Spark Plugs 4095 Spark Plug Iridium 4095 Original equipment on many late model applications Iridium at the fine-wire center electrode and platinum at the ground electrode provides maximum...- Part Number:
- 41-IZFR6F11
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 4095
- What's in the Box:
- (1) Spark Plug
$30.69 $16.85 -
Sold Out, please call for ETA.
NGK Spark Plugs 6208 Spark Plug 6208
NGK Spark Plugs
$10.19 $7.94NGK Spark Plugs 6208 Spark Plug 6208 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-LR8B
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6208
- Pkg.:
- Boxed
- What's in the Box:
- (1) Spark Plug
$10.19 $7.94 -
NGK Spark Plugs 6630 Spark Plug 6630
NGK Spark Plugs
$6.89 $4.47NGK Spark Plugs 6630 Spark Plug 6630 V-Power plugs offer economical performance and improved ignitability over nickel spark plugs. OEM and racer approved. Lowers ignition system voltage...- Part Number:
- 41-UR4
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6630
- Pkg.:
- Boxed
- What's in the Box:
- (1) Spark Plug
$6.89 $4.47 -
NGK Spark Plugs Bpr8Es Spark Plug 3923
NGK Spark Plugs
$6.72 $4.10NGK Spark Plugs Bpr8Es Spark Plug 3923Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-3923
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- BPR8ES
- Pack:
- 4
- Pkg.:
- Boxed
$6.72 $4.10 -
NGK Spark Plugs 4838 Spark Plug 4838
NGK Spark Plugs
$6.99 $4.62NGK Spark Plugs 4838 Spark Plug 4838 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-BP8HN10
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 4838
- Pack:
- 1
- Pkg.:
- Boxed
$6.99 $4.62 -
NGK Spark Plugs 2771 Spark Plug 2771
NGK Spark Plugs
$6.89 $4.47NGK Spark Plugs 2771 Spark Plug 2771V-Power plugs offer economical performance and improved ignitability over nickel spark plugs. OEM and racer approved.Lowers ignition system voltage...- Part Number:
- 41-UR5
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 2771
- Pack:
- 4
- Pkg.:
- Boxed
$6.89 $4.47 -
NGK Spark Plugs 4363 Spark Plug 4363
NGK Spark Plugs
$27.19 $14.96NGK Spark Plugs 4363 Spark Plug 4363Original equipment on many late model applicationsPlatinum at the fine-wire center electrode as well as at the ground electrode provides extended service lifeThe...- Part Number:
- 41-PZFR5F11
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 4363
- Pack:
- 4
$27.19 $14.96 -
NGK Spark Plugs 7447 Spark Plug Buz8H
NGK Spark Plugs
$22.89 $12.09NGK Spark Plugs 7447 Spark Plug Buz8HChosen 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-BUZ8H
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 7447
- Pack:
- 10
- Pkg.:
- Boxed
$22.89 $12.09 -
NGK Spark Plugs 96530 Spark Plug 96530
NGK Spark Plugs
$8.69 $3.79NGK Spark Plugs 96530 Spark Plug 96530Chosen 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-DCPR6EBLYB
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 96530
- Pack:
- 6
- Pkg.:
- Blister
$8.69 $3.79 -
NGK Spark Plugs Bkr6Eku Spark Plug 6993
NGK Spark Plugs
$18.26 $8.89NGK Spark Plugs Bkr6Eku Spark Plug 6993Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-6993
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- BKR6EKU
- Pack:
- 4
- Pkg.:
- Boxed
$18.26 $8.89 -
Sold Out, please call for ETA.
NGK Spark Plugs Br10Es Solid Spark Plug 4684
NGK Spark Plugs
$6.62 $5.35NGK Spark Plugs Br10Es Solid Spark Plug 4684Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-4684
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- BR10ES Solid
- Pack:
- 4
- Pkg.:
- Boxed
$6.62 $5.35 -
NGK Spark Plugs Br8Es-11 Spark Plug 7986
NGK Spark Plugs
$6.69 $4.52NGK Spark Plugs Br8Es-11 Spark Plug 7986Chosen 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-BR8ES11
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 7986
- Pack:
- 4
- Pkg.:
- Boxed
$6.69 $4.52 -
NGK Spark Plugs Lfr6A 11 Spark Plug 3672
NGK Spark Plugs
$15.89 $8.16NGK Spark Plugs Lfr6A 11 Spark Plug 3672Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-3672
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- LFR6A-11
- Pack:
- 4
- Pkg.:
- Boxed
$15.89 $8.16 -
NGK Spark Plug DCPR6E 3481 (Mercury 8M0204682)
NGK Spark Plugs
$10.77 $5.43NGK Spark Plug DCPR6E 3481 (Mercury 8M0204682) Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts,...- Part Number:
- 41-3481
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 3481
$10.77 $5.43 -
NGK Spark Plugs 2305 Spark Plug Cr9Ekb
NGK Spark Plugs
$21.99 $11.59NGK Spark Plugs 2305 Spark Plug Cr9Ekb 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-CR9EKB
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 2305
- Pkg.:
- Boxed
$21.99 $11.59 -
NGK Spark Plugs Bp8Hs-15 Spark Plug 6729
NGK Spark Plugs
$6.49 $4.49NGK Spark Plugs Bp8Hs-15 Spark Plug 6729 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-BP8HS15
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- 6729
- Pkg.:
- Boxed
$6.49 $4.49 -
NGK Spark Plugs Lfr5A 11 Spark Plug 6376
NGK Spark Plugs
$16.73 $8.18NGK Spark Plugs Lfr5A 11 Spark Plug 6376Chosen by more automotive, and marine engine manufacturers than any other. The unique copper core and exclusive electrode design assure fast starts, peak...- Part Number:
- 41-6376
- Availability:
- In Stock - Ships same or next business day.
- Model #:
- LFR5A-11
- Pack:
- 4
- Pkg.:
- Boxed
$16.73 $8.18
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.