Used Spark Plug Guide Tubes for all '90+ 300zx models.
Located between the Intake and Exhaust valve covers, these guide tubes help separate, and isolate, the spark plugs from the rest of the engine.
These spark plug tubes often become brittle over time as a result of exposure to both heat and moisture. This brittleness often results it breakage of the tube ends or an increase in the possibility of cracking around the bolt holes when attempting to tighten down the three 14mm bolts.
Please choose the appropriate side when ordering:
You may also purchase new Spark Plug Tube Seals Here. These seals help against moisture and oil from filling up the cavity around the spark plugs.