15% OFF ORDERS $50+ | 20% OFF $100+ | ONLINE ONLY
USE CODE
FIREWORK
*
Exclusions apply.
Advance Auto Parts Logo
Choose a Store
  • Shop All
  • Replacement Parts
  • Performance Parts
  • Accessories
  • Oil & Fluids
  • Special Offers
  • Advance Rewards
  • Advice & How-Tos
  • Project Guides
  • FAQ / Help Desk
Loading...
Share
Product thumb
Product thumb
Product thumb
Product thumb
Product main large

Champion Copper Plus Small Engine Spark Plug RA8HC - Dependable Performance & Durability

(6 reviews)
Part # 810
30 day warranty
Loading...
How Would You Like To Get This Item?

Store Pickup

Loading...Loading...Loading...

Same Day Home Delivery

Loading...Loading...Loading...

Home Delivery

Loading...Loading...Loading...
Loading...
Loading...
Loading...Loading...Loading...Loading...Loading...

Product Information

Product Details
Part No. 810
Warranty Details (30 Day Warranty)
Champion Copper Plus spark plugs deliver dependable ignition performance with proven copper-core technology. The copper core electrode provides excellent conductivity and optimized heat control for consistent sparks while the coated shell protects against corrosion. Champion your engine with spark plugs engineered to improve efficiency and keep your vehicle running at its best.

Product Features:
  • COPPER CORE PRECISION -- Copper core center electrode allows accurate control of heat range, delivering longer life and dependable performance
  • CORROSION RESISTANCE -- Coated shell provides corrosion resistance in harsh environments
  • BUILT-IN NOISE SUPPRESSION -- Modern resistor technology protects sensitive electronics by minimizing electrical interference
  • EASY TO INSTALL -- Pre-gapped design simplifies installation
  • OE-QUALITY FIT -- Built to meet OE fit, form and function for dependable performance
  • DEPENDABLE STARTS -- Engineered for reliable ignition in all weather conditions
Specifications
Center Electrode Design:
Standard

Center Electrode Diameter (Inch):
0.1 in

Center Electrode Tip Material:
Nickel

Electrical Terminal Type:
Removable Nut

Grade Type:
Standard Replacement

Ground Electrode Core Material:
Nickel

Ground Electrode Material:
Nickel Copper Alloy

Ground Electrode Quantity:
1

Ground Electrode Tip Material:
Nickel

Hex Size:
15.880 mm

Hex Type:
Hex

Indexed:
No

Installed Height (Inch):
1.99 in

Insulator Height:
0.03 in

Manufacturer Heat Range:
8

Part Description:
Spark Plug

Plug Type:
RA8HC

Pre-Gap Size:
0.025 in

Reach:
0.75 in

Resistor Type:
Yes

Seat Type:
Flat

Thread Diameter:
0.472 in

Washer Type:
Crush

Washer(s) Included:
Yes
Loading...
Loading...Loading...Loading...Loading...Loading...
4.83 out of 5
6 Customer Reviews
100% of respondents would recommend this to a friend
Ratings Distribution
5 Stars
5
4 Stars
1
3 Stars
0
2 Stars
0
1 Star
0
Definitely buy again
Pros
1
Durable
1
Easy To Install
1
Improves Engine Efficiency
1
Increases Power
1
Lightweight
Cons
No Cons
Best Uses
1
Everyday Driving
1
Performance Driving
1
Replacement
Describe Yourself
1
Auto Enthusiast
1
Casual Driver
1
Truck Enthusiast
Reviewed by 6 Customers
my harley has two cylinders again
Verified Buyer -
use them like a spark plug should be used and they have a nice finish
Bottom Line Yes, I would recommend to a friend
Definitely buy again
Verified Buyer -
Installed them in my Harley and it fired right up after sitting all winter.
Excellent
Verified Buyer -
This store always has what I need at a Great price that can not be matched. Service is awesome. The price on the spark plugs was the best.
I may buy this again.
Verified Buyer -
I got Champion plugs since they are exact replacements for my engine. The gap on every plug was smashed completely shut. There were now paper tubes protecting the electrodes,
Works great and price is right
Bought for push lawnmower, fired right up, great price.
Bottom Line Yes, I would recommend to a friend
Displaying Reviews 1 - 5Back to Top
Loading...
Loading...Loading...Loading...Loading...Loading...
No results
Loading...
Loading...Loading...Loading...Loading...Loading...
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
Brake Pads & Shoes
Brake Rotors
Alternators
Water Pumps
Starters
Brake Calipers

Order Lookup

Help Desk

Store Locator

In Store Services

Mobile App

CUSTOMER SUPPORT
Accessibility Statement
Contact Us
Forgot Password
Help Desk
In Store Pickup
In Store Services
Order Tracking
Recall Information
Return Policy
Same Day Delivery
© 2026 Advance Auto Parts
Privacy Policy
Terms of Use
Site Map
ADVANCING A WORLD IN MOTION®