Denso 671-6241 Direct Ignition Coil Boot Kit

Denso Direct Ignition Coil Boot Kit

Denso 671-6241 is a Direct Ignition Coil Boot Kit built to match the form, fit, color, and performance of the original factory boot design. The silicone boot material and female terminal connection support reliable ignition service on BMW applications that use a 6-boot setup.

The Denso First Time Fit COP boot line is engineered to meet or exceed OE/OES standards, making it a practical choice for restoring ignition performance on BMW 325i, 330i, 525i, X5, Z3, and related models. If you are replacing worn ignition coil boots on a BMW inline-six engine, this part number 671-6241 is built for direct replacement service.

Key Features

• Direct Ignition Coil Boot Kit for ignition coil service
• Silicone boot material for heat-resistant electrical insulation
• Black boot color for OE-style appearance
• Female terminal design with 1 terminal connection
• Length: 114.70
• Built to match factory-installed boot form and performance
• Denso First Time Fit product line for OE-style replacement

Detailed Product Overview

Denso 671-6241 is designed for BMW ignition systems that require a direct ignition coil boot with OE-style dimensions and construction. The boot set is made to mirror the original part in form, fit, color, and performance, helping maintain consistent spark delivery at the coil-to-spark-plug connection. This makes it a strong fit for BMW 325Ci, 330Ci, 525i, 530i, X5, and Z3 applications listed below. This part cross-references NGK CPB-EU007 for the same application.

What It Helps Address

• Cracked or heat-aged ignition coil boots
• Misfire conditions caused by poor coil boot insulation
• Moisture intrusion at the coil-to-plug connection
• Weak ignition transfer from worn boot terminals
• Restoration of OE-style ignition boot fit on BMW engines

Compatible With BMW Applications

• Fits 2001-2002 BMW 325Ci, N/A
• Fits 2001-2002 BMW 325i, N/A
• Fits 1992-1995 BMW 325i, N/A
• Fits 2001-2002 BMW 325xi, N/A
• Fits 2001-2002 BMW 330Ci, N/A
• Fits 2001-2002 BMW 330i, N/A
• Fits 2001-2002 BMW 330xi, N/A
• Fits 2001-2002 BMW 525i, N/A
• Fits 1991-1995 BMW 525i, N/A
• Fits 2001-2002 BMW 530i, N/A
• Fits 2001-2002 BMW X5, N/A
• Fits 1997-2002 BMW Z3, N/A
• Fits 2000 BMW 323Ci, N/A
• Fits 1998-2000 BMW 323i, N/A
• Fits 2000 BMW 328Ci, N/A
• Fits 1996-2000 BMW 328i, N/A
• Fits 1997-2000 BMW 528i, N/A
• Fits 1998-1999 BMW 323is, N/A
• Fits 1996-1999 BMW 328is, N/A
• Fits 1992-1995 BMW 325is, N/A

Installation Notes and Tips

Confirm the ignition coil boot length, terminal style, and engine application before installation. Inspect the coil, spark plug well, and surrounding ignition components for carbon tracking, oil contamination, or heat damage before installing the new boot. For BMW 325i, 330i, and Z3 ignition service, clean mating surfaces and verify a secure terminal connection to support consistent spark transfer.

Quality Assurance

Denso First Time Fit COP boot sets are built to OE/OES standards and are intended to match factory-installed boot specifications. The product line is focused on direct replacement quality for dependable ignition service on the listed BMW applications.