NGK Spark Plug P/N:90656
NGK 90543 spark plug for the 2014-2015 Cadillac XTS V6 3.6L and other vehicles ignites the air-fuel mixture in the combustion chamber. Like other NGK iridium spark plugs, it comes from the Laser Iridium line, which is recommended for vehicles that run fine wire iridium alloy plugs from the factory.
Hard starting, a rough idle or a misfire can mean a plug is worn, though a coil or fuel problem can look the same. Before replacing, inspect the removed plug with the engine off and cool: worn-down electrodes or a cracked ceramic insulator show the plug itself has worn out.
This spark plug fits the 2014-2015 Cadillac XTS V6 3.6L. As a Cadillac CTS spark plug, it fits the 2014 CTS V6 3.6L.
Fit and size
Build and materials
One spark plug. Both cars take six, so plan on six plugs per engine.
Interchange: 41-147
AI5263 · AP5263 · APP5263 · XP5263 · 12642791 · ILTR7E9
This part cross-references / interchanges with the following part numbers:
Does the NGK 90543 spark plug fit the 2014 Cadillac CTS V6 3.6L?
Yes. NGK 90543 fits the 2014 Cadillac CTS V6 3.6L and the 2014-2015 Cadillac XTS V6 3.6L.
Is the NGK 90543 a single plug or a set for the V6 3.6L?
This listing is one spark plug. The V6 3.6L in these Cadillacs takes six, so plan on six plugs.
Are NGK spark plugs like the 90543 made with an iridium center electrode?
Yes. The NGK 90543 has a fine wire iridium alloy center electrode, a platinum tip on the ground electrode and a solid copper core.
What thread size does this NGK Laser Iridium plug have?
This plug has an M14 - 1.25 thread and a tapered seat.
Does the NGK 90543 spark plug also go by ILTR7E9?
Yes. ILTR7E9 is NGK's service number for this spark plug, and 90543 is its stock number.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.