The oil filter on most Infiniti Q50 models is mounted in a bottom-mounted cartridge housing attached to the engine, and you typically access it from underneath the vehicle. The exact location varies by engine type: the 3.7L V6, the 3.0L twin-turbo V6, and any 2.0L variants each place the filter in a slightly different spot within the lower engine bay.
Engine variants and their filter locations
3.7L V6 (VQ37VHR)
In this engine, the oil filter sits in a canister-style housing on the lower side of the engine block, toward the passenger side. Access is from beneath the car after removing the front undertray or splash shield. The filter cartridge is housed inside a removable cap on the canister.
3.0L twin-turbo V6 (VR30DDTT)
For the 3.0L turbo, the oil filter is also in a cartridge-style housing beneath the engine. It is typically located toward the front underside and becomes accessible once you remove the undercarriage shield. Some years place the housing closer to the oil-pan area on the front-right side of the engine bay.
2.0L turbo I4 (if applicable to your market)
On Q50 variants equipped with the 2.0L turbo engine, the filter uses a cartridge-style housing in the lower engine bay. It is generally located under the intake area and accessed from below after removing protective panels or shields. As with other engines, exact positioning can vary by model year.
What you’ll need for inspection or replacement
Having the right tools and materials simplifies the process. Below is a standard setup for many Q50 models with a bottom-mounted cartridge filter.
- New oil filter cartridge compatible with your engine
- Appropriate engine oil (check owner’s manual for grade and quantity)
- Oil filter cap wrench or cartridge-cap tool (size depends on housing)
- Socket set and ratchet, plus an extension as needed
- Drain pan and some rags for spills
- jack and ramps or stands to safely raise the vehicle
- Protective gloves and safety glasses
Having these items on hand will help you perform a typical filter change without interruption. Always verify the exact filter type and oil capacity for your model year in the owner's manual or a dealership service bulletin.
How to access and replace the oil filter
Below is a general step-by-step guide for a typical Q50 with a bottom-mounted cartridge filter. Procedures may vary by year and engine, so consult the service manual for precise torque specs and steps.
- Park on a level surface, turn off the engine, and let it cool. Engage parking brake and weight safely with wheels chocked.
- Raise the vehicle and support it securely on ramps or stands. Remove the front undertray or splash shield to expose the oil-pan area and filter housing.
- Place the drain pan beneath the filter housing. Use the appropriate tool to loosen and remove the filter cap or housing cover.
- Remove the old cartridge filter from the housing. If the housing has a seal or o-ring, remove and inspect it for replacement if necessary.
- Install the new oil filter cartridge according to the housing’s directions. Reinstall the cap or cover and tighten to the specified torque.
- Reinstall any shields or undertray, lower the vehicle, and wipe up any spills.
- Refill the engine with the correct amount and grade of oil indicated in the owner’s manual. Start the engine and check for leaks. Recheck the oil level and add more if needed.
Always follow the service manual for torque specifications and any model-year-specific steps. If you’re unsure about the exact location for your Q50’s engine variant, consult your dealer or a qualified mechanic before attempting a change.
Summary
The Q50’s oil filter is located in a bottom-mounted cartridge housing attached to the engine, with the exact position depending on the engine variant (3.7L V6, 3.0L twin-turbo, or 2.0L turbo). Access typically requires removing a front undertray and working from underneath the vehicle. Preparation, the right tools, and careful following of the owner’s manual or service guide will ensure a safe and proper filter replacement. If in doubt, seek professional service to avoid oil leaks or improper installation.