Bosch 6745 Spark Plug

Bosch OE Fine Wire Platinum Spark Plug 6745

Bosch OE Fine Wire Platinum spark plug 6745 is built for drivers who want OE-style ignition performance with a platinum center electrode and fine wire design. It is engineered to improve ignitability and fuel efficiency while meeting or exceeding original equipment specifications for platinum spark plugs.

Compatible with select 2005-2010 Buick, Cadillac, Chevrolet, GMC, Pontiac, Saturn, and Suzuki vehicles, including applications such as the 2008-2010 Chevrolet Malibu, 2009 Buick Enclave, and 2005-2009 Cadillac CTS. The Bosch OE Fine Wire Platinum line focuses on consistent spark delivery and dependable secondary ignition performance.

Key Features

• Fine wire center electrode with platinum tip for efficient spark delivery
• Tapered ground electrode design for OE-style fit and function
• Resistor spark plug with 6000 resistance
• Copper core center and ground electrode construction
• 1.1 pre-gap size, 14 mm thread diameter, and tapered seat
• Non-removable nut terminal and ceramic insulator
• OE Fine Wire Platinum product line from Bosch

Detailed Description

Bosch 6745 is a platinum spark plug designed for 4-cycle automotive ignition systems that call for a tapered-seat, fine-wire plug with OE-level specifications. The platinum firing pin on the center electrode supports stable ignition performance, while the tapered ground electrode helps maintain consistent spark characteristics. This spark plug is a practical upgrade from conventional copper-core plugs for drivers servicing vehicles such as the Chevrolet Malibu, Cadillac CTS, and Buick Enclave.

The Bosch OE Fine Wire Platinum line is positioned as an OE-style replacement solution for vehicles that require platinum spark plug construction and precise electrical characteristics. With a 16 mm hex, 25 mm reach, and resistor design, part number 6745 is built to match the demands of modern ignition systems across the listed Buick, Cadillac, Chevrolet, GMC, Pontiac, Saturn, and Suzuki applications.

What It Helps Address

• Hard starting caused by worn or inefficient spark plugs
• Rough idle from inconsistent ignition performance
• Reduced fuel economy linked to degraded spark delivery
• Misfire symptoms related to plug wear or incorrect heat range
• Loss of throttle response from weak secondary ignition output

Installation Notes and Tips

Verify engine application, thread diameter, reach, seat type, and heat range before installation. Bosch 6745 uses a tapered seat, 14 mm thread diameter, 25 mm reach, and 1.1 pre-gap size, so confirm the engine specification matches these dimensions. Inspect ignition coils, plug wires, and related secondary ignition components during service to help maintain consistent performance.

For fitment reference, this spark plug is listed for 2008-2010 Chevrolet Malibu, 2009 Buick Enclave, 2005-2009 Cadillac CTS, 2008-2009 Chevrolet Equinox, 2009 Chevrolet Traverse, 2009 GMC Acadia, 2007-2009 Pontiac G6, 2008-2009 Pontiac G8, 2008-2009 Pontiac Torrent, 2007-2009 Saturn Aura, 2009 Saturn Outlook, 2008-2009 Saturn Vue, 2007-2009 Suzuki XL-7, 2005-2008 Buick Allure, 2005-2008 Buick LaCrosse, 2005-2006 Buick Rendezvous, 2009-2010 Suzuki Grand Vitara, 2005-2009 Cadillac SRX, and 2005-2009 Cadillac STS.

Quality Assurance

Bosch designs the OE Fine Wire Platinum line to meet or exceed original equipment specifications for platinum spark plugs. Part number 6745 is built for OE-style ignition service and consistent fitment across the listed applications.