The 2010 Altima uses different spark plugs depending on the engine: the 2.5-liter QR25DE four-cylinder and the 3.5-liter VQ35DE V6 each require high-quality platinum or iridium plugs from NGK or Denso. Always confirm the exact part number and gap for your VIN in the owner's manual or Nissan service data.
To understand this question in more detail, note that Altimas sold in 2010 came with two engine options. Each engine family has its own recommended plug type and installation specs. The following sections outline typical guidance by engine to help you prepare for a replacement.
2.5L QR25DE (four-cylinder)
For the 2.5L QR25DE, most service sources recommend a platinum or iridium spark plug from reputable brands such as NGK or Denso. The goal is a plug that can deliver reliable firing and good longevity in this engine’s operating range. Typical gaps are in the range around 0.043–0.047 inches (1.1–1.2 mm). Always use the exact part number and gap specified for your vehicle’s VIN.
Common options used by hobbyists and shops include the following high-level categories:
- NGK platinum or iridium plugs compatible with QR25DE engines (brand-pattern choices include NGK’s standard platinum or iridium lines).
- Denso platinum or iridium plugs designed for the QR25DE family (Denso equivalents to NGK in performance and heat range).
In practice, the exact part number you choose should reflect your vehicle’s VIN and the service manual’s specification. Gaps should be set to the manufacturer’s recommended value, and the plugs should be torqued to the correct specification.
3.5L VQ35DE (V6)
The 3.5L VQ35DE is a larger-displacement engine and typically uses a similar class of high-performance platinum or iridium plugs from NGK or Denso. As with the four-cylinder, the goal is reliable ignition across the engine’s operating range, with a gap commonly in the 0.043–0.047 inch (1.1–1.2 mm) neighborhood. Always verify the exact plug number and gap for your VIN.
Typical categories used for the V6 include:
- NGK platinum or iridium plugs appropriate for VQ35DE installations.
- Denso platinum or iridium plugs designed for the VQ35DE family.
Remember that the V6’s spark plug specification can differ from the four-cylinder model, so it’s essential to confirm the exact part number and gap from Nissan’s official data or your service advisor.
What to check before buying or installing
Before purchasing plugs or beginning replacement work, check the following to ensure compatibility and proper function:
- Confirm your engine code (QR25DE vs. VQ35DE) and trim level to determine the correct plug family.
- Review the owner’s manual or a Nissan service bulletin for the exact part number and gap specification for your VIN.
- Use the recommended torque specification when installing and verify the gap after gapping if you are reusing plugs.
After replacing spark plugs, if you notice misfires, rough running, or poor fuel economy, re-check the gap and verify that you installed the correct plugs for your engine. If in doubt, consult a Nissan dealership or a qualified automotive technician.
Summary
The 2010 Nissan Altima uses different spark plugs depending on the engine: the 2.5L QR25DE generally requires platinum or iridium NGK or Denso plugs, and the 3.5L VQ35DE uses a similar high-performance plug type. Both engines typically use a gap around 0.043–0.047 inches (1.1–1.2 mm). Always verify the exact part number and gap for your VIN from the owner's manual or Nissan service data to ensure proper fit and performance.
Which spark plugs are best for Nissan?
Achieve peak engine performance in your Nissan with the right set of spark plugs. Top choices like NGK, Bosch, and Autolite deliver reliable combustion and improved fuel efficiency. Designed for durability, these spark plugs keep your Nissan ready for every mile.
What spark plugs does the Nissan Altima use?
- NGK IX Iridium Spark Plug 93175.
- NGK IX Iridium Spark Plug 4469.
- Bosch Double Iridium Spark Plug 9616.
- NGK IX Iridium Spark Plug 4469.
- Bosch Double Iridium Spark Plug 9603.
- Autolite XP Iridium Spark Plug XP5683.
- ACDelco GM Original Equipment Iridium Spark Plug 41-162.
What kind of spark plugs are in a 2010 Nissan Altima?
NGK – Iridium IX Spark Plug (BKR5EIX-11): Extreme Ignitability & Durability (Part No. 5464)
What kills spark plugs quickly?
Pre-ignition can lead to heat building up in the combustion chamber causing the spark plugs to fail. In addition, if the cooling system isn't functioning correctly, it can cause the engine and spark plugs to overheat. This overheating can lead to the spark plug's electrode wearing out faster.