NGK 7734 Spark Plug - Exhaust Side

NGK BPR5ES Standard Spark Plug

The NGK 7734 standard spark plug is built for OE-style ignition performance in a wide range of older import and domestic applications. With a copper core center electrode, nickel tip materials, and a 0.036 pre-gap, it supports consistent spark delivery for vehicles that call for a conventional replacement plug.

NGK’s Standard Spark Plug line focuses on original-equipment fit, dependable operation, and broad vehicle coverage. The BPR5ES is a practical choice for drivers servicing classic Toyota, Mazda, Suzuki, Land Rover, Mercedes-Benz, and BMW applications that specify a standard copper spark plug.

Key Features

• NGK part number 7734 / BPR5ES
• Standard spark plug design for OE-style replacement
• Copper center electrode core with nickel tip material
• Nickel ground electrode with standard configuration
• 5,000 ohm resistor for ignition noise suppression
• 0.036 pre-gap size
• 14 mm thread diameter, 0.75 reach, flat seat
• 13/16 hex size with removable nut terminal

Detailed Description

NGK 7734 is a conventional spark plug engineered for vehicles that specify a standard heat range 5 plug with a flat seat and 14 mm thread. The copper core helps promote stable thermal transfer, while the nickel electrode materials support reliable ignition performance in everyday driving. This plug is commonly referenced for applications such as Toyota Pickup, Toyota 4Runner, Land Rover Range Rover, and Suzuki Samurai, along with many other older import platforms.

For fitment-based searches, this plug is listed for vehicles including Fits 1995-2002 Land Rover Range Rover, Fits 1985-1995 Suzuki Samurai, Fits 1984-1995 Toyota 4Runner, and Fits 1984-1995 Toyota Pickup. It also appears in coverage for BMW 318i, Mazda B2200, and Mercedes-Benz 560SL applications where the OE-style gap and heat range match the vehicle specification. This part cross-references Bosch 4018 and Autolite 65 for the same application.

What It Helps Address

• Rough idle caused by worn or fouled spark plugs
• Hard starting from weak or inconsistent spark output
• Misfire conditions tied to aged ignition components
• Reduced fuel economy from degraded plug performance
• Service replacement for vehicles calling for a standard copper plug

Installation Notes and Tips

Verify the vehicle’s required gap before installation, since some listed applications call for a different setting than the factory pre-gap. Confirm thread diameter, reach, seat type, and terminal style before ordering. For dual-plug engines such as certain Nissan applications, match the correct side and plug specification exactly to the service information.

Use the vehicle service manual for torque and gap specifications, and inspect ignition wires, distributor components, and coil condition during plug replacement. The NGK BPR5ES is a direct service part for many older Toyota, Land Rover, and Mercedes-Benz applications when the OE specification matches.

Quality Assurance

NGK is a long-established OE supplier and manufacturer with broad coverage across domestic and import vehicles. The brand’s North American and global manufacturing and distribution network supports consistent product availability and OE-focused standards for durability and operational performance.