NGK 5077 Spark Plug

NGK V-Power Spark Plug 5077 Overview

NGK V-Power Spark Plug 5077 is an OE-style ignition component built for select BMW applications that call for a 14 mm, flat-seat plug with a 0.75 in. reach. It uses a copper core center electrode, nickel tip materials, and a 5,000 ohm resistor to support stable ignition performance in daily driving conditions.

The NGK V-Power Spark Plug line focuses on consistent spark delivery and OE-equivalent fitment. For BMW 325i, 325is, 325iX, 325e, 325es, 528e, 525i, 535i, 635CSi, 735i, and 735iL applications, part number 5077 is a direct replacement option that matches the specified heat range and terminal style.

Key Features

• NGK V-Power Spark Plug, part number 5077
• Copper core center electrode for dependable ignition transfer
• Nickel center and ground electrode tip materials
• 5,000 ohm resistor for electrical noise suppression
• Standard ground electrode design with one ground electrode
• 14 mm thread diameter, 13/16 in. hex size, flat seat, and 0.75 in. reach
• Pre-gapped at .036 in. with removable nut terminal
• Manufacturer heat range 5

Detailed Description

NGK 5077 is a V-Power spark plug engineered to meet OE-equivalent requirements for a range of classic BMW engines. Its copper core construction helps promote efficient heat transfer, while the nickel electrode design supports consistent spark characteristics. The flat seat, 14 mm thread, and removable nut terminal make it a straightforward replacement for the listed applications. This part cross-references DENSO Auto Parts 5077 for the same application.

What It Helps Address

• Hard starting caused by worn or fouled spark plugs
• Rough idle from inconsistent ignition output
• Misfire conditions related to degraded plug electrodes
• Reduced throttle response from weak spark delivery
• Ignition noise concerns in vehicles requiring a resistor plug

Installation Notes and Fitment

• Fits 1987-1993 BMW 325i, N/A
• Fits 1989-1993 BMW 535i, N/A
• Fits 1988-1992 BMW 735i, N/A
• Fits 1988-1992 BMW 735iL, N/A
• Fits 1987-1991 BMW 325is, N/A
• Fits 1988-1991 BMW 325iX, N/A
• Fits 1989-1990 BMW 525i, N/A
• Fits 1988-1989 BMW 635CSi, N/A
• Fits 1982-1988 BMW 528e, N/A
• Fits 1984-1987 BMW 325e, N/A
• Fits 1986-1987 BMW 325es, N/A

Verify the specified gap for your application before installation; listed fitment notes include OE-equivalent gap references for certain BMW models. Confirm thread diameter, reach, seat type, and terminal style against the vehicle’s service specification before final installation.

Quality Assurance

NGK is a long-established OE supplier and manufacturer with broad coverage across automotive applications. Part number 5077 is built to original-equipment standards for durability and consistent operation in the listed BMW fitments.