NGK Spark Plugs FR5 8-Pack (Stock #7373) — OEM direct-fit, bulk replacement for routine maintenance

NGK FR5 spark plugs (8-pack, stock #7373) are genuine OEM ignition components sold in bulk to replace eight factory-specified spark plugs in compatible gasoline engines.

This kit contains eight brand-new NGK FR5 spark plugs packaged together for repair shops, fleet maintenance, and DIY vehicle owners who need a reliable, direct-fit replacement. These plugs are supplied as authentic NGK parts and match the factory specifications listed by a wide range of manufacturers. Always verify the correct part number for your vehicle and follow the owner’s manual for safe installation and proper torque settings.

Which engines and part numbers match the FR5-8PK set?

The NGK FR5 set corresponds to many legacy and contemporary part identifiers across multiple brands and catalogs. Use the compatibility list to cross-reference your vehicle’s original plug number before ordering to ensure fitment.

• Direct NGK stock number: 7373 and FR5 reference.
• Cross-references include AC5, DR14ZC, RC14YC, K20PR-U, VK20 and more.
• Also compatible with various catalog numbers such as 41-602, 431, 3145, and 9004851151000.
• Check your vehicle’s service manual or the parts table for precise identification.

How should I install these spark plugs safely?

Follow standard installation steps: confirm the correct plug gap (if required), hand-thread to avoid cross-threading, then tighten to the manufacturer-recommended torque. If you’re unsure, consult a professional mechanic to prevent damage to the cylinder head or plug.

• Inspect each plug for shipping damage before installation.
• Hand-start threading to prevent cross-threading.
• Tighten to the torque specification in your vehicle manual; use a torque wrench for accuracy.
• Replace boots and wires if worn to ensure a complete ignition service.

What are the package and product details I should know?

This listing is sold as a bulk pack of eight genuine NGK FR5 spark plugs, ideal for engines that require that specific plug. The product is new and intended as a direct replacement, with compatibility notes provided to help you confirm fit before purchase.

• Quantity: (8) FR5 spark plugs in bulk packaging.
• Condition: New, genuine NGK OEM replacement parts.
• Packaging: Bulk-packed for cost-efficient distribution and storage.
• Reference list provided for cross-compatibility verification.

Will these plugs work for routine maintenance or performance tuning?

These FR5 plugs are designed as factory-style replacements suitable for routine maintenance and restoring original ignition performance. They are not specialized high-performance or iridium-platinum variants, so consult engine requirements if you are modifying ignition timing or seeking upgraded materials.

• Ideal for scheduled tune-ups and restoring factory operation.
• Not a specialized high-performance electrode design.
• Use when the vehicle manufacturer lists FR5 or a cross-reference number.
• Consider upgraded NGK models for motorsports or modified engines.

Who is this for: This 8-pack is intended for mechanics, fleet managers, and vehicle owners performing multi-cylinder spark plug replacements who want an authentic NGK OEM part. It’s a practical choice for garage toolboxes or service counters when the FR5 specification is required; confirm part compatibility with your owner’s manual or supplier lookup before installing.