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NGK Standard Nickel Spark Plug (DCPR8E): Reliable OE Performance

(17 reviews)
Part # 4339
60 day warranty
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Product Information

Product Details
Part No. 4339
Warranty Details (60 Day Warranty)
NGK Standard spark plugs (in the iconic NGK 'yellow box' packaging) are a proven OE cornerstone and technology customers have relied on for decades. Engineered specifically for OE applications, NGK Standard spark plugs provide OE quality nickel alloy reliable performance and design. NGK's legendary high grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance, while triple gasket sealing prevents combustion gas leakage. Solid 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges. Trivalent metal plating ensures superior anti-corrosion and anti-seizing properties.

Product Features:
  • ACTUAL OE or EQUIVALENT DESIGN: OEM quality construction nickel alloy center electrode provides consistent performance
  • RECOMMENDED USAGE: Best for vehicles with OE nickel alloy plugs, not recommended on vehicles with factory precious metal plugs
  • NGK's OE CERAMIC TECHNOLOGY: High grade alumina silicate ceramic creates a stronger insulator for optimal dielectric performance
  • SOLID COPPER CORE: 98% pure copper core offers superior heat dissipation, conductivity and ultra wide heat ranges
  • COLD-ROLLED THREADS: Prevents cross-threading and damage to cylinder heads
  • TRIVALENT METAL PLATING: Delivers superior anti-corrosion and anti-seizing properties, ensuring ease of installation and removal
Specifications
Center Electrode Core Material:
Copper

Center Electrode Design:
Standard

Center Electrode Insulator Tip Projection:
0.12 in

Center Electrode Projection:
Mid Projection

Center Electrode Tip Material:
Nickel

Electrical Terminal Type:
Removable Nut

Electrode Core Material:
nickel

Electrode Tip Material:
nickel

Gap Size:
0.028 in

Grade Type:
Standard Replacement

Ground Configuration:
J-Gap

Ground Electrode Core Material:
Nickel

Ground Electrode Quantity:
1

Ground Electrode Tip Design:
Standard

Ground Electrode Tip Material:
Nickel

Ground Strap Quantity:
1

Hex Size:
5/8" (16mm)

Insulator Height:
1.93 in

Insulator Material:
Ceramic

Manufacturer Heat Range:
8

Pre-Gap Size:
.028 in

Reach:
0.750 in

Resistance:
5000.0 ohm

Resistor:
Yes

Resistor Type:
Yes

Seat Type:
Flat

Shorty Spark Plug:
No

Skirt:
No

Skirt Length:
0.0 in

Thread Diameter:
0.472 in

Thread Size:
M12 - 1.25

Tip Configuration:
Loose

Washer Type:
Crush

Washer(s) Included:
Yes

Wrench Diameter:
5/8 in
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4.76 out of 5
17 Customer Reviews
100% of respondents would recommend this to a friend
Ratings Distribution
5 Stars
16
4 Stars
0
3 Stars
0
2 Stars
0
1 Star
1
Pros
1
Durable
1
Easy To Install
1
Improves Engine Efficiency
1
Increases Power
1
Tough
Cons
1
none
Best Uses
3
Replacement Part
1
Oem Replacement
1
Snow Plowing
Describe Yourself
1
First Time Sea Doo Owner
Motorsports
2
Casual Rider
1
Mechanic
1
Driveway
Most Liked Positive Review
Great for Sea DOo
Bought a used Sea Doo from dealer who was supposed to have tuned it up and changed oil. Suspect that he did neither, based on the performance on the first test ride. Spit, sputter and run about 1/2 speed. Treated the used gas. changed the oil and changed all three plugs and now runs great as it should. Dealer thru in a new battery only because his mechanics forgot to charge the old one when they loaded it on the trailer prior to my arrival. Once he had them change it, she started and idled fine. Didn't find the rough running until I took it to the lake. You can always trust NGK for a good spark.
Most Liked Negative Review
Not online
No came broken
Reviewed by 17 Customers
I would make this purchase again.
Used in my boat.
Bottom Line Yes, I would recommend to a friend
Perfect for Sea Doo
Verified Buyer -
Spark plug fpr my sea doo 4 tech glad local parts store carries these without having to go to dealer
pretty plug
Verified Buyer -
Looks good
Not online
Verified Buyer -
No came broken
I'd buy this product again!
Verified Buyer -
Great price. Exact fit.
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