Engine Oil
5W-30
Full Synthetic
Capacity
4.8 qt
with filter
4.4 qt without filter
Oil Filter
PY8W-14-302
Mazda (OEM)
The 2021 Mazda CX-9 takes 5W-30 Full Synthetic with a total capacity of 4.8 quarts (filter included). You’ll need a 17mm socket for the drain plug, torqued to 38 Nm. The OEM oil filter is the Mazda PY8W-14-302, with 1 compatible alternative listed below. Note: this vehicle has 1 active recall — check the recalls section below. Below you’ll find complete maintenance specs, fluid capacities, parts, and links to buy what you need.
⚑ QUICK DIY TIPS FOR THE 2021 MAZDA CX-9
Torque your drain plug to 38 Nm (28 ft-lbs) to avoid leaks or stripped threads. Using the OEM filter (Mazda PY8W-14-302) is recommended for warranty compliance. Always use 5W-30 Full Synthetic as specified by Mazda — using the wrong viscosity can void your powertrain warranty. Check the maintenance schedule below for your next service interval. Viscosity 5W-30
Oil type Full Synthetic
Capacity (with filter) 4.8 qt
Capacity (w/o filter) 4.4 qt
Filter Options
Mazda OEM spin-on PY8W-14-302: Skyactiv-G 2.5 / 2.5T (interchangeable with PE01-14-302)
Drain Bolt & Hardware
Socket size 17 mm
Torque spec 38 Nm
Gasket Crush washer (aluminum)
Type Mazda ATF FZ
Capacity 3.7 qt
Change interval 60,000 mi
DOT type DOT 3
Change interval 45,000 mi
Type FL22
Color Green
Capacity 6 qt
Change interval 120,000 mi
Differential Fluid (rear) Buy Type 75W-90 GL-5
Capacity 2 qt
Change interval 60,000 mi
Differential Fluid (rear) Buy Type 75W-90 GL-5
Capacity 2 qt
Change interval 60,000 mi
Spark Plugs
Type Iridium
Gap 0.044
Quantity 4
Change interval 100,000 mi
Tires
Size 245/60R18
Front pressure 33 PSI
Rear pressure 33 PSI
Wiper Blades
Mazda TK48-67-330 driver
Buy Mazda TK78-67-330 passenger
Buy 5k mi 7.5k mi 10k mi 15k mi 20k mi 30k mi 50k mi 60k mi 90k mi 100k mi
≈ every 6 months
▸ Change Engine Oil & Filterspark plug
14mm thread, aluminum head
18 ft-lb · 24.4 Nm
21V750000
Mazda North American Operations (Mazda) is recalling certain 2020-2021 CX-9 vehicles equipped with 60/40 split bench second-row seats. The left-side second-row seat may unexpectedly slide forward during a crash. As such, these vehicles fail to comply with the requirements of Federal Motor Vehicle Safety Standard number 210, "Seat Belt Assembly Anchorages."
All categories ENGINE ELECTRICAL SYSTEM POWER TRAIN UNKNOWN OR OTHER EQUIPMENT STRUCTURE:BODY:DOOR STEERING STRUCTURE:BODY:BUMPERS EQUIPMENT:ELECTRICAL:INFOTAINMENT:SOFTWARE EQUIPMENT ADAPTIVE/MOBILITY BACK OVER PREVENTION TIRES:PRESSURE MONITORING AND REGULATING SYSTEMS ENGINE AND ENGINE COOLING VISIBILITY ELECTRICAL SYSTEM:SOFTWARE EQUIPMENT:OTHER:OWNERS/SERVICE/OTHER MANUAL SEATS STRUCTURE TRAILER HITCHES WHEELS VEHICLE SPEED CONTROL STRUCTURE:BODY LATCHES/LOCKS/LINKAGES FORWARD COLLISION AVOIDANCE VISIBILITY:POWER WINDOW DEVICES AND CONTROLS SERVICE BRAKES AIR BAGS EQUIPMENT:ELECTRICAL ELECTRICAL SYSTEM:12V/24V/48V BATTERY POWER TRAIN:AUTOMATIC TRANSMISSION TIRES:VALVE FUEL SYSTEM, OTHER EQUIPMENT:ELECTRICAL:INFOTAINMENT SERVICE BRAKES, HYDRAULIC SUSPENSION:FRONT:WHEEL BEARING POWER TRAIN:DRIVELINE:DIFFERENTIAL UNIT EQUIPMENT:MECHANICAL FUEL SYSTEM, GASOLINE ELECTRICAL SYSTEM:WIRING:SWITCHES/KNOBS/BUTTONS EXTERIOR LIGHTING:HEADLIGHTS EQUIPMENT:ELECTRICAL:WIRELESS CHARGER/CRADLE SUSPENSION POWER TRAIN:AUTOMATIC TRANSMISSION:CONTROL MODULE:SOFTWARE ELECTRICAL SYSTEM: INSTRUMENT CLUSTER/PANEL ELECTRICAL SYSTEM:INSTRUMENT PANEL:SPEEDOMETER/ODOMETER VISIBILITY:DEFROSTER/DEFOGGER/HVAC SYSTEM VISIBILITY:GLASS, SIDE/REAR EXTERIOR LIGHTING EQUIPMENT:ELECTRICAL:NAVIGATIONAL SYSTEM(GLOBAL POSITIONING SYSTEM) STRUCTURE:BODY:HATCHBACK/LIFTGATE
SA-026-26 ENGINE 2026-04-16
This Service Alert supersedes the previously issued M-Tip(s) listed below. The changes are noted in Red text. MT-002/19 09/30/19 and 12/19/19 DESCRIPTION If an engine assembly is replaced after a catastrophic internal mechanical failure, clean the intake manifold internally before installing a replacement engine assembly. If the intake manifold is not cleaned properly, the replacement engine may fail prematurely. Metallic debris from the old engine (with catastrophic internal mechanical failure) may rest inside the intake manifold. When the new engine assembly is installed, debris in the intake manifold will be ingested into the new engine and cause internal damage. Clean the intake manifold internally to remove any debris from old engine before installing the new replacement engine assembly. If the intake manifold cannot be properly cleaned internally, replace it.
SA-027-26 ELECTRICAL SYSTEM 2026-04-15
This SA supersedes the previously issued bulletin(s) listed below. The changes are noted below in Red. SA-007/25 10/22/25, 06/02/25 and 02/03/25 DESCRIPTION The Mazda DCA-8000 is required for all warranty battery testing. If the Mazda DCA-8000 is not used, incorrect battery testing may result in unnecessary battery replacement. Use the following test procedures in this Service Bulletin to test Mazda vehicle batteries and to generate a Warranty Code. NOTE: A Warranty Code is required for warranty claim submission Battery Identification (Mazda batteries have 2 rating types) 1. JIS (Japanese Industrial Standard): JIS codes are six-digit alpha-numeric markings (excluding i-STOP batteries e.g. Q-85, S-95) molded into the top of the battery to identify a battery by the capacity (amps), dimensions, and battery terminal type. Vehicles manufactured in Japan come from the factory with a JIS rated battery. NOTE: Replacement batteries may use a CCA rating. If so, use the CCA rating listed on the battery. 2. CCA (Cold Cranking Amps): CCA ratings are normally located on a sticker affixed to the top of the battery to indicate a battery’s Cold Cranking Amps. CCA rated batteries are supplied with domestically produced vehicles. NOTE: If an incorrect CCA rating is entered into the Mazda DCA-8000, it will result in a false result and invalid Warranty Code from the tester. This will also result in unnecessary replacement of batteries. TEST PROCEDURE 1. Connect the charger clamps to the appropriate battery posts.
SA-029-26 POWER TRAIN 2026-04-21
This Service Alert supersedes the previously issued SA listed below: The changes are noted in Red. SA-011/24 02/12/24, 06/06/24, 07/29/24 DESCRIPTION Mazda has developed factory recommended scheduled maintenance services that support all major vehicle systems. Mazda recommends dealers follow the scheduled maintenance tables as cited in the vehicle-specific workshop manual or owner's manual. Services performed outside of Mazda's factory scheduled maintenance are not recommended. These services are unnecessary and create unneeded expenses for your customers. SCHEDULED MAINTENANCE Refer to the applicable Workshop Manual or Owner's Manual for vehicle -specific manufacturer scheduled maintenance. Workshop Manual - Refer to section 00-00 SCHEDULED MAINTENANCE. Owner's Manual - Refer to section 8 Maintenance and Care. b. Note: Please refer to the information below outlining the services not included in Mazda's Factory Scheduled Maintenance: IMPORTANT: Recommending fluid flushes when not necessary can lead to customer confusion and dissatisfaction. Fluid flushing for preventive maintenance purposes is strongly discouraged, unless otherwise specified in a published procedure (Owner’s Manual, Workshop Manual, Technical Service Bulletin, etc.).
Show all 421 TSBs(+418) Private Party
$13,680–$15,120
Dealer Retail
$15,840–$18,000
Estimated values assume average condition and mileage for vehicle age.
Source: estimated
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