Mazda CX-9 Oil Filter: OEM Part Number & Replacement Guide
Regular oil changes are the single best thing you can do for your Mazda CX-9's engine, and a genuine oil filter is a key part of every change. The filter traps metal particles and contaminants before they circulate through the engine. This guide covers the correct OEM oil filter part number for the CX-9, how often to change it, and how to do it yourself.
Which oil filter fits a Mazda CX-9?
The correct filter depends on your CX-9's engine generation:
- 2016-present Mazda CX-9 (2.5L turbo): Part # 1WPY-14-302 (also fits Mazda6, CX-30, CX-50)
- 2007-2015 Mazda CX-9 (3.5L / 3.7L V6): Part # YF09-14-302A
Entering your VIN at checkout is the fastest way to confirm the exact filter for your engine and build year before ordering.
How often should you change the CX-9 oil filter?
Replace the oil filter with every oil change. Mazda generally recommends an oil and filter change around every 5,000 to 7,500 miles for the CX-9, though your maintenance minder or severe-service schedule may call for shorter intervals. The turbocharged 2.5L engine in the newer CX-9 benefits from staying on top of clean oil.
Signs it is time for an oil and filter change
Watch for the oil change reminder on the dash, oil that looks dark and gritty on the dipstick, engine noise that is louder than usual, or simply reaching your mileage interval. A clogged filter can reduce oil flow and accelerate engine wear, so do not stretch the interval.
Is changing the CX-9 oil filter a DIY job?
Yes, for most home mechanics. You will need the correct filter, fresh oil of the right grade, a drain pan, and basic tools. Warm the engine slightly, drain the old oil, replace the filter and drain plug washer, refill with the correct amount and grade of oil, then check the level. The job typically takes about 30 to 45 minutes.
Frequently asked questions
What oil does the CX-9 use? Most modern CX-9 engines call for a full-synthetic oil in the grade listed in your owner's manual. Always confirm the exact grade for your model year.
Do I need to replace the drain plug washer? It is good practice to use a fresh crush washer each change to prevent leaks.
Can I reuse an oil filter? No. Oil filters are single-use and should be replaced at every oil change.
Where to buy a genuine Mazda CX-9 oil filter
MazdaPartDirect.com is owned and operated by Seacoast Mazda, an authorized Mazda dealer in Portsmouth, NH. Genuine CX-9 oil filters are in stock and ship fast, at up to 33% off MSRP with a VIN fitment guarantee.