Walker 900-P2101 Coil Boot

Walker ThunderCore-Ultra Coil Boot for Subaru and Saab

Walker ThunderCore-Ultra coil boot part number 900-P2101 is a direct-fit ignition hardware component for select Subaru and Saab applications. It is listed for Subaru Impreza, Forester, Legacy, Outback, Baja, and Saab 9-2X models with ThunderCore-Ultra fitment coverage.

Key Features

• Coil boot for ignition hardware service
• Walker ThunderCore-Ultra product line application
• Fits 2004-2014 Subaru Impreza, N/A
• Fits 2004-2010 Subaru Forester, N/A
• Fits 2005-2009 Subaru Legacy, N/A
• Fits 2005-2009 Subaru Outback, N/A
• Fits 2006 Saab 9-2X, N/A
• Fits 2004-2006 Subaru Baja, N/A

Detailed Description

The Walker ThunderCore-Ultra line is identified here by part number 900-P2101 for ignition service on select Subaru and Saab vehicles. This coil boot is cataloged for long-tail fitment searches such as 2004-2014 Subaru Impreza coil boot, 2004-2010 Subaru Forester ignition boot, and 2005-2009 Subaru Outback coil boot. It also applies to the 2006 Saab 9-2X and other listed Subaru platforms in the same ThunderCore-Ultra application group.

This part cross-references Monroe Shocks & Struts (e.g., 172286, 182286) for the same application.

What It Helps Address

• Cracked or worn ignition coil boot material
• Misfire symptoms related to poor coil-to-plug connection
• Moisture intrusion at the spark plug well
• Weak ignition transfer caused by deteriorated boot insulation
• Service replacement for aging Subaru and Saab ignition hardware

Installation Notes and Tips

Verify engine and ignition system compatibility against the vehicle listing before installation. Inspect the coil, spark plug, and surrounding ignition components for wear or contamination during service. For best results, install on a clean, dry ignition assembly and confirm the boot seats fully on the coil and spark plug.

Quality Assurance

Walker ThunderCore-Ultra part 900-P2101 is cataloged for specific vehicle applications and should be matched to the exact year, make, and model shown in the fitment data. Confirm the application before purchase to ensure proper ignition service on Subaru Impreza, Forester, Legacy, Outback, Baja, and Saab 9-2X models.