HomeIgnition > Ignition CoilWalker 900-P2108-4 Coil Boot Kit
Part #: 900-P2108-4

Walker 900-P2108-4 Coil Boot Kit

ThunderCore-Ultra
3 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
$38.92Free Shipping
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*Free return shipping only qualifies if our fitment verification tool is used.
In Stock · Ready To Ship Most orders ship same-day if ordered before 1pm CST.
OE Direct Replacement — Bolt-on fit, no modifications needed
ThunderCore-Ultra
Fitment: Subaru, Impreza
Easy Returns — Return within 60 days for a full refund
Fast Shipping — Most orders ship same business day before 1pm CST

Overview of Walker ThunderCore-Ultra Coil Boot Kit

The Walker ThunderCore-Ultra Coil Boot Kit 900-P2108-4 is designed specifically for Subaru Impreza models. This ignition coil boot kit ensures reliable electrical connection and optimal performance for your vehicle's ignition system.

  • Compatible with Subaru Impreza ignition systems
  • Includes coil boots engineered for secure spark plug connection
  • Part number 900-P2108-4 for precise identification
  • Part of the Walker ThunderCore-Ultra product line

About the ThunderCore-Ultra Product Line

The ThunderCore-Ultra line by Walker focuses on ignition components engineered to meet stringent performance and durability standards. This product line emphasizes reliable electrical conductivity and resistance to heat and wear, making it suitable for demanding ignition system applications such as those found in Subaru Impreza vehicles.

Product Description and Application

The 900-P2108-4 coil boot kit is designed to replace worn or damaged coil boots in the ignition system of Subaru Impreza models. Proper coil boots are essential for maintaining a strong spark and preventing misfires by ensuring a secure connection between the ignition coil and spark plug. This kit helps maintain engine efficiency and smooth operation by protecting the ignition coil terminals from moisture, dirt, and corrosion.

Common Issues Addressed by This Coil Boot Kit

  • Ignition misfires caused by poor coil-to-plug connection
  • Engine hesitation or rough idling due to faulty coil boots
  • Electrical arcing or spark loss in the ignition system
  • Corrosion or damage to ignition coil terminals
  • Reduced engine performance linked to ignition system faults

Installation Notes and Tips

  • Ensure the engine is cool before beginning installation
  • Disconnect the battery to prevent electrical shorts
  • Carefully remove old coil boots without damaging ignition coils
  • Verify the new boots fit securely on both coil and spark plug
  • Test engine operation after installation to confirm proper function

Quality Assurance and Warranty

Walker manufactures the ThunderCore-Ultra coil boot kit to meet industry standards for ignition components. While specific warranty details for part number 900-P2108-4 should be confirmed with the supplier, Walker products typically come with a limited warranty covering defects in materials and workmanship to ensure reliability and customer confidence.

This part fits 3 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005SubaruImpreza2.0LH4N/AThunderCore-Ultra
2004SubaruImpreza2.0LH4N/AThunderCore-Ultra
2003SubaruImpreza2.0LH4N/AThunderCore-Ultra

* Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.

This part directly replaces or is cross-referenced with the following part numbers:

Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.