Choosing the Right Spark Plugs for Your 1982-1989 Nissan 200SX
Keep your classic S110 or S12 200SX engine firing on all cylinders with the correct set of new spark plugs.
- First, confirm your 200SX's engine to buy the correct plugs; 1982-83 models need eight plugs, while 1984-88 models need four or six.
- Stick with NGK or Denso brands for the best performance and reliability; forum members strongly advise against using Bosch plugs in Nissan engines.
- For most owners, standard NGK copper plugs offer the best balance of performance and value for these vintage ignition systems.
- Always verify and adjust the spark plug gap using a proper tool before installation; do not trust them to be correct out of the box.
First, Identify Your Engine
Before buying spark plugs, you must know which engine is in your 200SX, as they require different plugs. The 1982-1989 period covers two different generations, the S110 and S12.
- 1982-1983 (S110): These models use a Z20E or Z22E "NAPS-Z" engine. Uniquely, these engines have two spark plugs per cylinder, meaning you will need to buy a total of eight plugs.
- 1984-1988 (S12): These models came with three possible engines: the base CA20E 2.0L 4-cylinder, the CA18ET 1.8L turbocharged 4-cylinder, or the VG30E 3.0L V6 (1987-1988 only).
Symptoms of Failing Spark Plugs
Worn spark plugs can make your car feel sluggish and unreliable. Look for these common signs:
- Rough Idling: The engine may shake or sound uneven when the car is stopped.
- Poor Acceleration: The car feels slow or hesitant when you press the gas pedal.
- Engine Misfires: You may feel a stuttering or jerking from the engine, especially under load.
- Reduced Fuel Economy: You'll find yourself filling up the gas tank more often than usual because fouled plugs can't burn fuel efficiently.
- Difficulty Starting: The engine may take longer to crank over and start, particularly when cold.
Warning for 1982-1983 Owners
If you own an S110 200SX with the NAPS-Z engine, remember to purchase eight spark plugs, not four. These engines feature a dual-plug design to improve emissions and efficiency.
Choosing the Right Aftermarket Spark Plug
For a classic Japanese vehicle like the 200SX, brand choice matters. Forum discussions among owners show a clear preference.
Brand Recommendations
- Tier 1 (Highly Recommended): NGK & Denso
NGK is the original equipment (OE) manufacturer for most Nissans of this era. You cannot go wrong with an NGK or Denso plug. They are engineered to work perfectly with your car's ignition system. Many owners report that their Nissans simply run best on NGK plugs. - Tier 2 (Standard Replacement): Autolite
Autolite plugs are a functional, budget-friendly option. While they will work, they are not as highly regarded for Japanese imports as NGK or Denso. - Use with Caution: Bosch
While Bosch is a major brand, numerous Nissan owners across various models report poor performance, rough idling, and other issues after installing Bosch plugs. It is generally recommended to avoid them for your 200SX.
Plug Material: Copper, Platinum, or Iridium?
- Copper/Nickel: These are the standard, OE-style plugs (like NGK V-Power). They provide excellent performance for these engines and are very affordable. Their main downside is a shorter lifespan, requiring changes every 30,000 miles or so.
- Platinum/Iridium: These plugs have a longer service life (60,000-100,000 miles). While they work, the performance gain on an older ignition system is minimal, and the higher cost may not be justified, especially on NAPS-Z engines that require eight plugs. For most owners, standard NGK copper plugs are the best combination of performance and value.
Pro Tip: Always Check the Gap
Never assume new spark plugs are gapped correctly out of the box. The gap is the small space between the center and ground electrodes. An incorrect gap can cause misfires and poor performance. Use a feeler or wire-type gapping tool to check and adjust each plug to the specification found on your car's under-hood sticker or in the service manual. The typical gap for these vehicles is around 1.1mm or 0.044 inches.
Cost of New Aftermarket Spark Plugs
| Plug Type | Price Range (Per Plug) |
|---|---|
| Standard Copper/Nickel (NGK, Denso) | $3.50 - $6.00 |
| Platinum (NGK, Denso) | $6.00 - $15.00 |
| Iridium (NGK, Denso) | $12.00 - $26.00 |
Prices are estimates and can vary based on brand and retailer.
Frequently Asked Questions
How often should I replace the spark plugs on my 200SX?
For standard copper plugs, a good interval is every 30,000 miles or every 2-3 years. If you install platinum or iridium plugs, you can extend that to 60,000 miles or more, but always check for signs of wear.
What is a "colder" spark plug and do I need one?
A colder heat range plug is designed to run cooler to prevent detonation in high-performance engines. For a stock 200SX, even the turbo model, the standard heat range plug recommended by NGK is best. If you have significantly increased the turbo boost or made other major power modifications, stepping to one heat range colder (e.g., from an NGK '6' to a '7') may be necessary.
Is it hard to replace the spark plugs myself?
No, this is a great DIY job for beginners. Access on all 200SX engines from this era is generally good. You will need a basic socket set with a spark plug socket, an extension, and a gapping tool.
Do I need to put anti-seize on the new spark plug threads?
NGK specifically recommends NOT using anti-seize on their modern plugs. Their plugs have a special trivalent plating that provides its own anti-seize properties and prevents over-torquing. Simply install the plugs into a clean thread bore and torque to the manufacturer's specification.
Helpful Videos
Technical Specifications
OEM Part Numbers: 22401-W8916 22401-W8915 22401-V1416 22401-01P15 22401-01P16 22401-53J06
Engine-specific. Common gap: 1.1mm (0.044"). Common brands: NGK, Denso. S110 NAPS-Z engines require 8 plugs. S12 CA20E/CA18ET require 4 plugs. S12 VG30E requires 6 plugs.
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The information in this article is provided for general reference and educational purposes only. Vehicle specifications, procedures, and part compatibility can vary by production date, trim level, and region. Always consult your vehicle's factory service manual and verify part numbers before purchasing or performing repairs. Safety-critical components such as airbags, seat belts, and braking systems should be installed by a qualified professional.
- Nissan 200SX:
- 🎬 Helpful Videos
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- First, Identify Your Engine
- Symptoms of Failing Spark Plugs
- Warning for 1982-1983 Owners
- Choosing the Right Aftermarket Spark Plug
- Brand Recommendations
- Plug Material: Copper, Platinum, or Iridium?
- Pro Tip: Always Check the Gap
- Cost of New Aftermarket Spark Plugs
- Frequently Asked Questions
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