15% OFF ORDERS $35+ | 20% OFF $100+ | ONLINE ONLY
USE CODE
CYBER
*
Exclusions apply.
Advance Auto Parts Logo
Choose a Store
  • Shop All
  • Replacement Parts
  • Performance Parts
  • Accessories
  • Oil & Fluids
  • Special Offers
  • Speed Perks
  • Advice & How-Tos
  • Project Guides
  • FAQ / Help Desk
Loading...
Share
Product thumb
Product thumb
Product main large
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. 3811
Warranty Details (1 YR REPLACEMENT IF DEFECTIVE)
The Laser Iridium Spark Plug is engineered for exceptional performance and longevity, making it a top choice for vehicles with distributorless ignition systems. Featuring an iridium-tipped center electrode that is six times harder than platinum, this spark plug ensures superior durability and reliable ignition under demanding conditions. The platinum-tipped ground electrode further enhances its lifespan, providing consistent performance over extended use. Designed to deliver precise and efficient combustion, it helps optimize engine performance while reducing wear and tear. With its advanced materials and robust construction, this spark plug offers excellent value for drivers seeking long-lasting reliability and enhanced engine efficiency.

Product Features:
  • Iridium-tipped center electrode is 6 times harder than platinum
  • Platinum-tipped ground electrode helps ensure great durability and long life
  • Recommended for vehicles using distributorless ignition systems
  • Engineered for precise and efficient combustion to optimize engine performance and reduce wear.
  • Constructed with advanced materials to provide reliable ignition under demanding conditions.
Specifications
Electrode Core Material:
Iridium

Electrode Tip Material:
Iridium

Ground Strap Quantity:
1

Manufacturer Heat Range:
5

Resistor:
Yes

Shorty Spark Plug:
No

Spark Plug Reach:
25.00 mm

Spark Plug Seat Type:
tapered

Spark Plug Thread Size:
14 mm

Tip Configuration:
Solid

Type:
Iridium/Platinum

Wrench Diameter:
5/8 in
Loading...
Loading...Loading...Loading...Loading...Loading...
Loading...
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
© 2025 Advance Auto Parts
Privacy Policy
Terms of Use
Site Map
ADVANCING A WORLD IN MOTION®