NGK 5847 Spark Plug

NGK 5847 Standard Spark Plug for OE-Style Ignition Service

NGK 5847 is a standard spark plug built for direct replacement service in select Smart Fortwo and Mitsubishi Outlander applications. It combines a copper center electrode core, nickel center electrode tip, and nickel ground electrode construction to support consistent ignition performance in the specified vehicles.

Key Features

• NGK Standard Spark Plug, part number 5847
• OE-focused design from NGK, a major original equipment spark plug supplier
• Copper center electrode core for dependable conductivity
• Nickel center and ground electrode tip materials
• Standard ground electrode design with one ground electrode
• Pre-gapped at 0.036 in. for listed applications
• 5,000 ohm resistance
• Flat seat, 12.00 mm thread diameter, 5/8 hex size
• Cross-reference: Monroe Shocks & Struts 5847 for the same application

Product Details

This NGK Standard Spark Plug line is built around original equipment standards and broad vehicle coverage. Part number 5847, also identified as LKR7B-9, uses a copper core with nickel electrode materials and a 7 heat range to support stable combustion in the engine applications listed below. It is a direct service part for 2010-2015 Smart Fortwo and 2007-2013 Mitsubishi Outlander, with fitment notes calling for a 0.036-inch gap on Smart Fortwo and a 0.032-inch gap on Mitsubishi Outlander. For shoppers searching for an NGK 5847 spark plug, LKR7B-9 spark plug, or a replacement spark plug for Smart Fortwo and Mitsubishi Outlander, this part matches the OE-style specifications shown here.

What This Spark Plug Helps Address

• Hard starting caused by worn spark plug electrodes
• Rough idle from inconsistent spark delivery
• Misfire conditions related to plug wear or incorrect gap
• Reduced throttle response from degraded ignition performance
• Service replacement needs on Smart Fortwo and Mitsubishi Outlander ignition systems

Installation Notes and Tips

Verify engine application before installation and follow the listed gap specification for the vehicle: 0.036 inches for 2010-2015 Smart Fortwo and 0.032 inches for 2007-2013 Mitsubishi Outlander. Use the correct 5/8-inch hex spark plug socket and confirm the flat seat style matches the cylinder head. Check the plug gap before installation even when the plug is pre-gapped, and tighten to the vehicle manufacturer’s service specification.

Quality Assurance

NGK has long-standing OE supplier experience and manufactures spark plugs for a wide range of domestic and import vehicles, motorcycles, marine engines, and small engines. Part number 5847 is produced to support original equipment standards for durability and operational performance in the listed applications.