Review on 🔥 High-Performance Iridium Spark Plugs (OE12621258) - Pack of 8 for Chevy, GMC, Cadillac, Buick, Hummer, Isuzu, Pontiac, Saab by Justin Peck

Name: 🔥 High-Performance Iridium Spark Plugs (OE12621258) - Pack of 8 for Chevy, GMC, Cadillac, Buick, Hummer, Isuzu, Pontiac, Saab
Item: 🔥 High-Performance Iridium Spark Plugs (OE12621258) - Pack of 8 for Chevy, GMC, Cadillac, Buick, Hummer, Isuzu, Pontiac, Saab
Rating: 1

September 20, 2022

2009 GMC Sierra 4.8L

I just replaced them with Delco quick spark plugs after about 1000 miles and will never put them in my car again. My gas mileage has gone from 17mph to 13, it's just junk plugs for my engine. It might work for you, but certainly not for me.

Pros

Confident

Cons

Could have chosen a newer model

New products

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