Part No. R42TS
ACDelco Professional Conventional Spark Plugs are designed for reliability and efficient performance, and are a high quality replacement for many vehicles on the road today. Their high-quality copper cores and outstanding suppression characteristics deliver reliable performance. They are also available for Marine applications. These premium aftermarket replacement spark plugs are manufactured to meet your expectations for fit, form, and function.

Product Features:

Black Onyx coating helps reduce corrosion
Copper core provides great heat transfer and helps maximize plug durability
Ribbed suppressor seal extends resistance and helps prevent spark 'flash over' and misfires
Nickel-chrome alloy sheathing helps prevent corrosion on center electrode
Available for use in Marine applications
Some ACDelco GM Original Equipment parts may have formerly appeared as GM Genuine Parts (OE) or ACDelco Professional
ACDelco GM Original Equipment parts are designed, engineered and tested to rigorous standards, and are backed by General Motors
GM Engineers design and validate OE parts specifically for your Chevrolet, Buick, GMC, or Cadillac vehicle
GM regularly updates production and service part designs to integrate new materials and technologies
Outstanding Suppression Characteristics: These spark plugs offer outstanding suppression characteristics, reducing radio frequency interference for smoother engine performance.
Tapered Seat Type: Designed with a tapered seat type, these spark plugs ensure a secure fit and optimal sealing in the engine.
Resistor Type: Equipped with a resistor, these spark plugs help to minimize electromagnetic interference, contributing to the overall efficiency and reliability of your vehicle's ignition system.

Center Electrode Core Material:   Copper
Center Electrode Tip Material:   Nickel
Ground Configuration:   Single
Ground Electrode Core Material:   Nickel
Ground Electrode Quantity:   1
Ground Electrode Tip Design:   Single Prong Electrode
Height:   1.12 in
Hex Size:   5/8in
Insulator Height:   57.76 mm
Length:   4.16 in
Manufacturer Heat Range:   2
Pre-Gap Size:   1.02 mm
Reach:   10.95 mm
Resistor Type:   Yes
Seat Type:   Conical
Thread Diameter:   14 mm
Weight:   .4 lb
Width:   3.59 in