HomeIgnition > Ignition CoilWalker 900-P2038-6 Coil Boot Kit
Part #: 900-P2038-6

Walker 900-P2038-6 Coil Boot Kit

ThunderCore-Ultra
23 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: Buick, Chevrolet, GMC, and Isuzu, Rainier, Trailblazer, Trailblazer EXT, Envoy, Envoy XL, Envoy XUV, and Ascender
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-P2038-6 is designed for reliable ignition performance in select Buick, Chevrolet, GMC, and Isuzu vehicles. This kit provides essential components to maintain proper spark delivery and engine efficiency in models such as the Buick Rainier and Chevrolet Trailblazer.

  • Compatible with Buick, Chevrolet, GMC, and Isuzu vehicles
  • Includes coil boots engineered for optimal spark plug connection
  • Part number 900-P2038-6 ensures precise fitment
  • Designed for ignition coil maintenance and repair
  • Part of the Walker ThunderCore-Ultra product line

About the ThunderCore-Ultra Product Line

The ThunderCore-Ultra line by Walker focuses on ignition components that meet specific OEM requirements for durability and performance. This coil boot kit is part of that line, offering a tailored solution for ignition coil connections in mid-size SUVs and trucks. The ThunderCore-Ultra series emphasizes compatibility and reliable electrical insulation to support consistent engine operation.

Detailed Product Description

The Walker 900-P2038-6 Coil Boot Kit is engineered to replace worn or damaged coil boots in ignition systems of vehicles including the Buick Rainier, Chevrolet Trailblazer, GMC Envoy, and Isuzu Ascender. Proper coil boot function is critical for maintaining a strong spark and preventing misfires. This kit provides components that ensure a secure connection between the ignition coil and spark plug, helping to maintain engine performance and fuel efficiency.

Common Applications and Issues Addressed

  • Prevents ignition misfires caused by faulty coil boots
  • Eliminates rough idling and engine hesitation
  • Reduces risk of coil-to-plug electrical leakage
  • Helps restore proper spark plug firing
  • Supports consistent engine starting and acceleration

Installation Notes and Tips

  • Ensure engine is cool before beginning installation
  • Disconnect the battery to avoid electrical shock
  • Carefully remove old coil boots without damaging ignition coils
  • Apply dielectric grease to new boots for improved seal and conductivity
  • Verify secure fitment on both coil and spark plug ends

Quality Assurance and Warranty

Walker provides quality-tested ignition components designed to meet or exceed OEM standards. While specific warranty details for part number 900-P2038-6 should be confirmed at the point of purchase, Walker products typically come with a limited warranty covering defects in materials and workmanship to ensure reliability and customer confidence.

This part fits 23 vehicles. Search below:

YearMakeModelLitersCylindersPositionNotes
2005BuickRainier4.2LL6N/AThunderCore-Ultra
2005ChevroletTrailblazer4.2LL6N/AThunderCore-Ultra
2005ChevroletTrailblazer EXT4.2LL6N/AThunderCore-Ultra
2005GMCEnvoy4.2LL6N/AThunderCore-Ultra
2005GMCEnvoy XL4.2LL6N/AThunderCore-Ultra
2005GMCEnvoy XUV4.2LL6N/AThunderCore-Ultra
2005IsuzuAscender4.2LL6N/AThunderCore-Ultra
2004BuickRainier4.2LL6N/AThunderCore-Ultra
2004ChevroletTrailblazer4.2LL6N/AThunderCore-Ultra
2004ChevroletTrailblazer EXT4.2LL6N/AThunderCore-Ultra
2004GMCEnvoy4.2LL6N/AThunderCore-Ultra
2004GMCEnvoy XL4.2LL6N/AThunderCore-Ultra
2004GMCEnvoy XUV4.2LL6N/AThunderCore-Ultra
2004IsuzuAscender4.2LL6N/AThunderCore-Ultra
2003ChevroletTrailblazer4.2LL6N/AThunderCore-Ultra
2003ChevroletTrailblazer EXT4.2LL6N/AThunderCore-Ultra
2003GMCEnvoy4.2LL6N/AThunderCore-Ultra
2003GMCEnvoy XL4.2LL6N/AThunderCore-Ultra
2003IsuzuAscender4.2LL6N/AThunderCore-Ultra
2002ChevroletTrailblazer4.2LL6N/AThunderCore-Ultra
2002ChevroletTrailblazer EXT4.2LL6N/AThunderCore-Ultra
2002GMCEnvoy4.2LL6N/AThunderCore-Ultra
2002GMCEnvoy XL4.2LL6N/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.