View our Specials! Coupon Code: SaveIn2026
Looking for aftermarket parts to modify or upgrade your 2018 Cadillac CTS with spark plugs? At Tunersports.com we carry a huge selection of the top name brand performance spark plug parts and accessories.
 IN STOCK 5019NGK G-Power Series offers the performance and durability of platinum at a competitive price. Fine wire platinum tipped center electrode reduces required voltage for better starts, superior acceleration and increased fuel economy.... NGK G-Power Platinum Spark Plug Box of 4 (LTR5GP) 2016-2019 Cadillac CTS V $49.42 |
OUT OF STOCK 94372NGK G-Power Series offers the performance and durability of platinum at a competitive price. Fine wire platinum tipped center electrode reduces required voltage for better starts, superior acceleration and increased fuel economy.... NGK G-Power Spark Plug Box of 4 (LTR6GP-8) 2014-2019 Cadillac CTS Base / Luxury $49.42 |
 IN STOCK 94374The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX® the ideal choice for any performance enthusiast. Iridium's high melting point is perfectly suited to today's high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability.... NGK Iridium IX Spark Plug Box of 4 (LTR6IX) 2014-2019 Cadillac CTS Base / Luxury $55.44 |
 IN STOCK - LOW 5476NGK Laser Iridium plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, perfect for today's high-tech, high-performance engines.... NGK Laser Iridium Spark Plug Box of 4 (ILTR5D) 2016-2019 Cadillac CTS V $61.03 |
OUT OF STOCK 94489NGK Laser Iridium plugs were designed specifically for the performance enthusiast. Fine wire center electrode ensures high durability and a consistently stable spark. Iridium alloy has an extremely high melting point, perfect for today's high-tech, high-performance engines.... NGK Laser Iridium Spark Plug Box of 4 (ILTR6M9G) 2014-2019 Cadillac CTS Base / Luxury $61.03 |
 OUT OF STOCK 95605NGK Ruthenium HX is designed for newer engines which demand high ignitability. Double Fine Electrode (DFE) design promotes spark energy concentration and ignites a wider range of air-fuel ratios, offering improved performance in rich or lean engine conditions.... NGK Ruthenium HX Spark Plug Box of 4 (LTR7BHX) 2014-2019 Cadillac CTS Vsport $68.68 |
 IN STOCK 90495NGK Ruthenium HX is designed for newer engines which demand high ignitability. Double Fine Electrode (DFE) design promotes spark energy concentration and ignites a wider range of air-fuel ratios, offering improved performance in rich or lean engine conditions.... NGK Ruthenium HX Spark Plug Box of 4 (LTR6BHX) 2014-2019 Cadillac CTS Base / Luxury $68.68 |
 OUT OF STOCK 4344The improved throttle response, superior anti-fouling and high-ignitability makes Iridium IX® the ideal choice for any performance enthusiast. Iridium's high melting point is perfectly suited to today's high-temperature engines, delivering outstanding acceleration, fuel efficiency and durability.... NGK Single Iridium Spark Plug Box of 4 (LTR5IX-11) 2016-2019 Cadillac CTS V $55.51 |