Choose a Store
- Shop All
- Replacement Parts
- Performance Parts
- Accessories
- Oil & Fluids
- Special Offers
- Advance Rewards
- Advice & How-Tos
- Project Guides
Share
Champion Copper Plus Small Engine Spark Plug (CJ8): Dependable Performance & Durability
30 day warranty
Loading...
How Would You Like To Get This Item?
Store Pickup
Same Day Home Delivery
Home Delivery
Product Information
Product Details
Part No. 843-1
Warranty Details (30 Day Warranty)
Copper Plus spark plug delivers reliable performance and durability, making it an ideal choice for small engines. Featuring a copper core center electrode, it ensures precise heat control for extended lifespan and consistent wear. The nickel-tipped center and ground electrodes enhance conductivity while resisting fouling, ensuring smooth engine operation. Designed as an OE-type replacement, this spark plug meets ISO and SAE Standards, guaranteeing proven performance and compatibility with a wide range of small engines. Its flat seat design and superior corrosion resistance further contribute to its long-lasting functionality, making it a dependable solution for maintaining engine efficiency.
Product Features:
Product Features:
- Resists fouling
- Superior corrosion resistance
- Dependable and proven performance
- Increased conductivity and heat control for good overall wear
Specifications
Center Electrode Design:
Standard
Center Electrode Tip Material:
Nickel
Electrical Terminal Type:
Non-Removable Nut
Grade Type:
Standard Replacement
Ground Electrode Core Material:
Nickel
Ground Electrode Quantity:
1
Ground Electrode Tip Material:
Nickel
Hex Size:
19.000 mm
Hex Type:
Hex
Indexed:
No
Manufacturer Heat Range:
8
Part Description:
Spark Plug
Pre-Gap Size:
0.030 in
Reach:
0.375 in
Resistor Type:
No
Seat Type:
Flat
Thread Diameter:
0.551 in
Washer Type:
Crush
Washer(s) Included:
Yes
4.75 out of 5
217 Customer Reviews
97% of respondents would recommend this to a friend
Ratings Distribution
5 Stars
185
4 Stars
21
3 Stars
5
2 Stars
0
1 Star
6
Pros
1
Can Withstand Use
1
Improves Performance
Cons
No Cons
Best Uses
1
Small Engines
Car/Motorcycle Describe yourself
1
Auto Enthusiast
1
Mechanic
1
Truck Enthusiast
Most Liked Positive Review
Replaces the old Champion J-8.
Replaces the obsolete J-8 plug in vintage small engines.
Most Liked Negative Review
Items good Service wasn't.
The plugs were great . I ordered online the night before I went to pick them up. It said they would be ready to pickup in 30 minutes that night, but I went in the next morning and had to wait on them to pull my online order . That added 7 minutes to my time in the store. Don't say it will be ready to pickup if your going to pull it when I get there. If I would have known that I could have went to store got my plugs and paid. then left. That what online ordered is about shop, pay and pickup .
Reviewed by 217 Customers
Replaces the old Champion J-8.
Staff Reviewer -
Replaces the obsolete J-8 plug in vintage small engines.
Bottom Line Yes, I would recommend to a friend
Nothing flashy, just plain old dependable
These things have been around forever, and that's ok. Junk doesn't stick around forever, so that tells me something.
Bottom Line Yes, I would recommend to a friend
It's a spark plug
It's a spark plug. It works as it should
Bottom Line Yes, I would recommend to a friend
yes, would by again
The part worked perfect, staff had it ready, pickup took less than 2 minutes - Thank You!
Bottom Line Yes, I would recommend to a friend
Spark Plug for a Mantis tiller
I did not have spark prior to installing the spark plug on my Mantis Tiller. As soon as I installed it, it fired right up.
Bottom Line Yes, I would recommend to a friend
Displaying Reviews 1 - 5Back to Top
No results
Feedback
Be The First To Know About Deals And Promotions.
Plus, create an account to receive $5 off of $20 or more.
TOP REPLACEMENT PARTS
ROUTINE MAINTENANCE PARTS
CUSTOMER SUPPORT
ABOUT US
PROFESSIONAL SHOPS