Keep your engine ignition system running strong with this ACDelco 41-156 set of 4 OEM iridium spark plugs — precision engineered to meet strict GM factory specifications for fit, performance, and durability. These plugs help deliver smooth starts, reliable combustion, and long service life.
Brand: ACDelco GM Original Equipment
Part Number: 41-156
Quantity: 2 sold individually.
OEM factory-engineered replacement spark plugs
Iridium center electrode for improved durability and performance
Designed to help reduce misfires and improve throttle response
Pre-gapped at factory — no re-gapping required in most cases
These spark plugs fit a wide range of GM vehicles that call for ACDelco 41-156 iridium plugs (check your owner’s manual or VIN to confirm before buying). Examples include:
Buick
Encore (2016–2019, 2021–2022)
Encore GX (2020–2025)
Cascada (2016–2019)
Envista (2024–2025)
Chevrolet
Cruze (2016–2019)
Malibu (2016–2025)
Equinox (2018–2025)
Trailblazer (2021–2025)
Trax (2021–2025)
GMC
Terrain (2018–2024)
⚠️ Compatibility depends on engine type and year — always verify part number match before installation.
These ACDelco plugs are direct OEM replacements and commonly referenced in fitment databases as equivalent to the same OE GM spark plug specification. You can also cross-reference this part against other OEM or OE style iridium plugs for the same applications.
Brand New
Unused and packaged securely
Sold as a set of 4 spark plugs
ACDelco is a trusted Original Equipment supplier for GM and many other applications — engineered and tested to meet the same standards as the parts installed at the factory. These iridium plugs provide longer life and reliable performance compared to standard copper or platinum plugs.
FREE shipping included!
Ships carefully packaged for safe delivery.
Verify 41-156 is the correct OEM spark plug for your specific vehicle before purchase.
Always refer to your vehicle’s service manual or VIN lookup for precise fitment.
Professional installation recommended.
Brand: ACDelco
Manufacturer Part Number (MPN): 41-156
Type: Spark Plug
Electrode Material: Iridium
Quantity: Set of 4
Fitment Type: Direct Replacement OEM
Condition: New
Compatible Makes: Buick, Chevrolet, GMC (verify model & year)
Seat Type: Conical
Pre-Gap: Factory preset