2011 Cadillac STS Engine Air Filters

Genuine GM engine air filters for the 2011 Cadillac STS, at wholesale prices. Factory air filters seal to the housing correctly, which is what keeps unfiltered air out of the intake tract. Sigma platform rear-drive sedan, offered with the Northstar V8 and in supercharged STS-V form.

What sends people here

Reduced throttle response or a mass airflow code after a cheap filter. On a full-size car, engine option is the main split here, and it runs deeper into the group than most people expect.

Why buy OEM here

• Wholesale pricing. Most engine air filters numbers land well below dealer list.
• No aftermarket substitutes. These are GM engine air filters, not OE-style equivalents.
• We catch the wrong part before you do. VIN verification is free on every engine air filters order.

Before you order

OEM components carry GM warranty coverage, which is usually worth more than the price gap on the invoice. If you are unsure which version you have, give us the VIN and our specialists will confirm fitment. Stock moves out the door the day you order it, assuming you beat the mid-afternoon cutoff.