Best spark plugs for a 2009 Cadillac CTS
Spark plug listings at Advance Auto Parts
Advance Auto Parts
Autolite
Autolite Double Platinum Spark Plug: Enhanced Durability & Longer Service Life, APP5263
MPN APP5263
$7.49
Advance Auto Parts
Autolite
Autolite Platinum Spark Plug: Enhanced Durability & Improved Performance, AP5263
MPN AP5263
$5.49
Advance Auto Parts
Autolite
Autolite Platinum Spark Plug: Improved Performance & Durability, AP5243
MPN AP5243
$5.49
Advance Auto Parts
Autolite Iridium
Autolite Iridium Iridium Ultra Fine Wire Spark Plug: Laser Welded for Optimum Performance, AI5263
MPN AI5263
$11.49
Advance Auto Parts
Autolite Iridium
Autolite Iridium Iridium XP Fine wire Spark Plug: Improved Durability, More Focused Ignition, XP5263
MPN XP5263
$11.49
Advance Auto Parts
Bosch
Bosch OE Fine Wire Double Iridium Spark Plug: High Performance & Longevity, 9602
MPN 9602
$12.49
Advance Auto Parts
Champion
Champion Copper Plus Spark Plug RS9YC - Dependable Performance & Durability, 304
MPN 304
$4.79
Advance Auto Parts
Champion
Champion Double Platinum Power Spark Plug RES11PYPB5 - Enhanced Durability & Performance, 7437
MPN 7437
$8.89
Advance Auto Parts
Champion
Champion Double Platinum Power Spark Plug RS9PYP4 - Enhanced Durability & Performance, 7304
MPN 7304
$6.99
Advance Auto Parts
Champion
Champion Iridium Spark Plug RES9WYPB4 - Maximum Performance & Longevity, 9901
MPN 9901
$10.49
Advance Auto Parts
Champion
Champion Platinum Power Spark Plug RS10PYC4 - Powerful Performance & Longevity, 3401
MPN 3401
$5.89
Advance Auto Parts
DENSO
DENSO Double Platinum Spark Plug: OE Performance, lasts 60K+ Miles, PT16VR13, 5068
MPN 5068
$11.99
Advance Auto Parts
DENSO
DENSO Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, IT20, 5326
MPN 5326
$14.49
Advance Auto Parts
DENSO
DENSO Iridium Power Spark Plug: Maximum Spark Energy, 0.4mm Iridium Tip, ITV16, 5338
MPN 5338
$14.49
Advance Auto Parts
DENSO
DENSO Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, IT20TT, 4714
MPN 4714
$13.49
Advance Auto Parts
DENSO
DENSO Iridium TT Spark Plug: Ultimate Endurance and Power, 0.4mm Iridium Tip, ITV16TT, 4718
MPN 4718
$13.49
Advance Auto Parts
NGK
NGK G-Power Spark Plug (LTR6GP): Enhanced Durability & Fuel Efficiency, 90198
MPN 90198
$8.99
Advance Auto Parts
NGK
NGK G-Power Spark Plug (TR6GP): Enhanced Durability & Fuel Efficiency, 5141
MPN 5141
$8.99
Advance Auto Parts
NGK
NGK Iridium IX Spark Plug (LTR6IX-11): Extreme Ignitability & Durability, 6509
MPN 6509
$17.99
Advance Auto Parts
NGK
NGK Iridium IX Spark Plug (TR6IX): Extreme Ignitability & Durability, 3689
MPN 3689
$16.99
Advance Auto Parts
NGK
NGK Laser Iridium Spark Plug (ILTR6E11): Fine Wire Tip for High Efficiency, 90117
MPN 90117
$21.49
Advance Auto Parts
NGK
NGK Laser Platinum Spark Plug (PLTR6A-10G): Enhanced Ignitability & Longevity, 3587
MPN 3587
$13.99
Advance Auto Parts
NGK
NGK Ruthenium HX Spark Plug (LTR6AHX): High Ignitability & Durability, 91276
MPN 91276
$19.49Spark plug listings on Amazon
Brand and material notes
Copper plugs are often the least expensive. Platinum and iridium listings usually last longer and cost more. Use the merchant page and your owner’s manual — this site does not assign a heat range or claim a performance gain.
Before you buy
- Confirm the engine code on the vehicle or build sticker.
- Match the OE spark-plug number when you have it.
- Check plug gap, torque, and how many plugs the engine uses.
- Treat Advance and Amazon cards as separate offers, not the same SKU.
Other eligible years
This site contains affiliate links. We may earn a commission if you buy through Advance Auto Parts or Amazon. Listings come from merchant catalogs for the selected year, make, and model. They are not OEM confirmation of engine, plug gap, torque, heat range, or quantity.