HomeIgnition > Ignition CoilWalker 900-P2005-8 Coil Boot Kit
Part #: 900-P2005-8

Walker 900-P2005-8 Coil Boot Kit

ThunderCore-Ultra
51 vehicles fit this part
Select your vehicle to confirm fitment
Verify this part fits before purchasing — free returns if it doesn't
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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: BMW, 540i, M5, X5, Z8, 740i, 740iL, and 840Ci
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-P2005-8 is designed specifically for select BMW models, including the 540i, 740i, 740iL, 840Ci, M5, X5, and Z8. This kit provides reliable ignition coil boot replacement to maintain optimal engine performance and ignition system integrity.

  • Compatible with BMW 540i, 740i, 740iL, 840Ci, M5, X5, and Z8 models
  • Part number 900-P2005-8 ensures precise fitment
  • Includes coil boots engineered for ignition system durability
  • Part of the Walker ThunderCore-Ultra product line
  • Designed to maintain proper spark delivery and reduce misfires

About the ThunderCore-Ultra Product Line

The ThunderCore-Ultra line by Walker focuses on ignition components engineered for durability and consistent performance. This coil boot kit is part of that line, offering a solution tailored to meet the ignition demands of BMW vehicles. The ThunderCore-Ultra series emphasizes quality materials and design to support reliable spark transmission and withstand the thermal and mechanical stresses typical in automotive ignition systems.

Detailed Product Description

The Walker 900-P2005-8 coil boot kit is engineered to replace worn or damaged ignition coil boots on compatible BMW models. Proper coil boots are essential for maintaining a secure connection between the ignition coil and spark plug, ensuring efficient spark delivery. This kit helps prevent ignition misfires, rough idling, and potential engine performance issues caused by degraded coil boots. The precise fitment for BMW 540i, 740i, 740iL, 840Ci, M5, X5, and Z8 models ensures installation accuracy and reliable operation.

Common Applications and Issues Addressed

  • Replacement of cracked or brittle coil boots
  • Resolution of ignition misfires related to poor coil-to-plug connection
  • Elimination of rough engine idle caused by faulty ignition components
  • Prevention of moisture intrusion into the ignition system
  • Restoration of consistent spark delivery for improved engine performance

Installation Notes and Tips

  • Ensure engine is cool before beginning installation to avoid burns
  • Disconnect the battery to prevent electrical shorts during replacement
  • Carefully remove old coil boots without damaging ignition coils or spark plugs
  • Apply dielectric grease inside new boots to improve seal and ease future removal
  • Verify secure seating of coil boots on ignition coils and spark plugs

Quality Assurance and Warranty

Walker manufactures the ThunderCore-Ultra coil boot kit to meet OEM standards for fit and function. While specific warranty details are not provided, Walker products typically undergo rigorous quality control to ensure durability and performance. Using the 900-P2005-8 kit helps maintain the integrity of the ignition system on compatible BMW models.

This part fits 51 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2003BMW540i4.4LV8N/AThunderCore-Ultra
2003BMWM55.0LV8N/AThunderCore-Ultra
2003BMWM54.9LV8N/AThunderCore-Ultra
2003BMWX54.4LV8N/AThunderCore-Ultra
2003BMWZ85.0LV8N/AThunderCore-Ultra
2003BMWZ84.8LV8N/AThunderCore-Ultra
2002BMW540i4.4LV8N/AThunderCore-Ultra
2002BMWM55.0LV8N/AThunderCore-Ultra
2002BMWM54.9LV8N/AThunderCore-Ultra
2002BMWX54.6LV8N/AThunderCore-Ultra
2002BMWX54.4LV8N/AThunderCore-Ultra
2002BMWX53.0LL6N/AThunderCore-Ultra
2002BMWZ85.0LV8N/AThunderCore-Ultra
2001BMW540i4.4LV8N/AThunderCore-Ultra
2001BMW740i4.4LV8N/AThunderCore-Ultra
2001BMW740iL4.4LV8N/AThunderCore-Ultra
2001BMWM55.0LV8N/AThunderCore-Ultra
2001BMWM54.9LV8N/AThunderCore-Ultra
2001BMWX54.4LV8N/AThunderCore-Ultra
2001BMWZ85.0LV8N/AThunderCore-Ultra
2001BMWZ84.9LV8N/AThunderCore-Ultra
2000BMW540i4.4LV8N/AThunderCore-Ultra
2000BMW740i4.4LV8N/AThunderCore-Ultra
2000BMW740iL4.4LV8N/AThunderCore-Ultra
2000BMWM55.0LV8N/AThunderCore-Ultra
2000BMWM54.9LV8N/AThunderCore-Ultra
2000BMWX54.4LV8N/AThunderCore-Ultra
2000BMWZ85.0LV8N/AThunderCore-Ultra
1999BMW540i4.4LV8N/AThunderCore-Ultra
1999BMW740i4.4LV8N/AThunderCore-Ultra
1999BMW740iL4.4LV8N/AThunderCore-Ultra
1999BMWM54.9LV8N/AThunderCore-Ultra
1998BMW540i4.4LV8N/AThunderCore-Ultra
1998BMW740i4.4LV8N/AThunderCore-Ultra
1998BMW740iL4.4LV8N/AThunderCore-Ultra
1997BMW540i4.4LV8N/AThunderCore-Ultra
1997BMW740i4.4LV8N/AThunderCore-Ultra
1997BMW740iL4.4LV8N/AThunderCore-Ultra
1997BMW840Ci4.4LV8N/AThunderCore-Ultra
1996BMW740iL4.4LV8N/AThunderCore-Ultra
1996BMW840Ci4.4LV8N/AThunderCore-Ultra
1995BMW540i4.0LV8N/AThunderCore-Ultra
1995BMW740i4.0LV8N/AThunderCore-Ultra
1995BMW740iL4.0LV8N/AThunderCore-Ultra
1995BMW840Ci4.0LV8N/AThunderCore-Ultra
1994BMW540i4.0LV8N/AThunderCore-Ultra
1994BMW740i4.0LV8N/AThunderCore-Ultra
1994BMW740iL4.0LV8N/AThunderCore-Ultra
1994BMW840Ci4.0LV8N/AThunderCore-Ultra
1993BMW740i4.0LV8N/AThunderCore-Ultra
1993BMW740iL4.0LV8N/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.