Bosch 6758 Spark Plug

Bosch OE Fine Wire Platinum Spark Plug 6758

Bosch OE Fine Wire Platinum spark plug 6758 is built for drivers who want OE-style ignition performance with a platinum center electrode and fine wire design. It is engineered for improved ignitability and fuel efficiency, with fitment coverage for select Volvo and Saab applications.

Key Features

• Fine wire center electrode with platinum firing pin for consistent spark delivery
• Tapered ground electrode design for OE-style combustion performance
• Resistor spark plug with 6000 resistance
• Platinum center electrode tip with nickel ground electrode tip material
• 14 mm thread diameter, 19 mm reach, flat seat, and 16 mm hex size
• Ceramic insulator and non-removable nut terminal
• Pre-gapped at .7 for direct OE-style service

Product Details

The Bosch OE Fine Wire Platinum line focuses on original-equipment specifications for platinum spark plugs, making it a practical upgrade from conventional copper core plugs. Part number 6758 uses a copper core center electrode with a platinum tip and a single-ground, J-gap configuration to support stable ignition performance. This Bosch 6758 spark plug is a direct-fit choice for many Volvo S60, V70, S80, XC70, XC90, C70, S40, V40, S70, and 850 applications, as well as select Saab 900 models.

This part cross-references Bosch 6758 for the same application.

Common Issues This Spark Plug Can Address

• Hard starting caused by worn or inefficient spark plugs
• Rough idle from weakened ignition output
• Reduced fuel economy related to degraded spark performance
• Misfire symptoms tied to worn electrodes or excessive plug wear
• Inconsistent throttle response from aging ignition components

Installation Notes and Fitment

Compatible With 2003-2008 Volvo XC70, N/A; 2001-2007 Volvo S60, N/A; 1998-2007 Volvo V70, N/A; 1999-2006 Volvo S80, N/A; 2003-2006 Volvo XC90, N/A; 1998-2004 Volvo C70, N/A; 2000-2004 Volvo S40, N/A; 2000-2004 Volvo V40, N/A; 1998-2000 Volvo S70, N/A; 1997-1998 Saab 900, N/A; 1991-1994 Saab 900, N/A; 1993-1997 Volvo 850, N/A.

Verify the specified 14 mm thread diameter, 19 mm reach, flat seat, and heat range 7 before installation. Use the correct spark plug socket for the 16 mm hex and follow the vehicle manufacturer’s torque specification. Check the gap against the engine’s service requirements before final installation.

Quality Assurance

Bosch designs the OE Fine Wire Platinum line to meet or exceed original equipment specifications for platinum spark plugs, supporting OE-level fit and ignition performance expectations.