NGK Spark Plugs R6252K-105 4-Pack — OEM-Style Replacement for 4-Cylinder Engines, Stock #2741

NGK R6252K-105 spark plugs are an OEM-style ignition replacement sold as a convenient 4-pack for routine service and multi-cylinder engines.

These NGK R6252K-105 plugs are packaged in sets of four so you have the right quantity for most four-cylinder tune-ups or to keep a ready spare set on hand. Designed to match original equipment specifications, they provide straightforward fitment and predictable performance when replacing worn or fouled plugs. The part is listed under stock number 2741 and ships in its original NGK packaging.

Will these NGK plugs fit my vehicle?

Compatibility depends on the engine’s required plug number and heat range. Verify your vehicle’s service manual, parts fiche, or online fitment guide to confirm R6252K-105 is the correct replacement for your engine model and year.

• Check OEM part cross-reference or VIN-based lookup.
• Compare thread size, reach, and seat type listed by NGK.
• Confirm recommended gap or re-gap specifications for your application.

How should I install NGK R6252K-105 spark plugs?

Install using correct torque and a clean socket to avoid damage. Hand-start the plug to prevent cross-threading, torque to the manufacturer’s specification, and set the electrode gap if required prior to installation.

• Hand-thread first, then tighten with a torque wrench to spec.
• Use anti-seize only if manufacturer recommends it.
• Reconnect ignition leads or coils securely after installation.

What maintenance benefits do these replacement plugs offer?

Replacing old or deteriorated plugs restores efficient spark delivery and can help maintain smooth idle and reliable starting. Fresh plugs aid combustion consistency but results vary with overall engine condition.

• Restores consistent ignition timing across cylinders.
• Helps reduce misfires related to worn electrodes or fouling.
• Provides predictable baseline performance for diagnostics.

How is the product packaged and what quantity is included?

Each sale contains four NGK R6252K-105 plugs packaged together for ease of service on common multi-cylinder engines. Packaging shows the NGK branding and part number for quick identification.

• Sold as a 4-pack—ideal for complete cylinder banks on many engines.
• Individual plugs are in protective sleeves to prevent contamination.
• Box displays part number and stock #2741 for inventory tracking.

Who is this for: This 4-pack is aimed at DIY mechanics, professional technicians, and fleet managers who need an OEM-style spark plug replacement for routine maintenance or scheduled tune-ups. It's especially useful if you work on four-cylinder engines or prefer to replace plugs in matched sets to ensure balanced ignition across cylinders.