Walker
ThunderCore-Ultra

Walker 900-P2040-8 Coil Boot Kit

Brand Walker 900-P2040-8
Product line ThunderCore-Ultra
Fits Cadillac and Oldsmobile · 14 vehicles

Coil boot kit. Replacement boots for ignition coil service.

ThunderCore-Ultra line. Walker performance-focused ignition product line.

$38.41Free shipping
In stock · usually ships same day before 1pm CST
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Walker ThunderCore-Ultra Coil Boot Kit

Walker ThunderCore-Ultra coil boot kit, part number 900-P2040-8, is built for direct-fit ignition service on select Cadillac and Oldsmobile applications. It is a focused replacement for ignition coil boot wear that can affect spark delivery and drivability.

Key Features

  • Ignition coil boot kit for service on the ThunderCore-Ultra line
  • Direct-fit application for select Cadillac DeVille, Seville, Eldorado, and Oldsmobile Aurora models
  • Part number 900-P2040-8 for accurate ordering and catalog lookup
  • Supports ignition system maintenance where coil boot deterioration is present

Fitment Details

  • Fits 2000-2003 Cadillac DeVille, N/A, ThunderCore-Ultra
  • Fits 2000-2003 Cadillac Seville, N/A, ThunderCore-Ultra
  • Fits 2001-2003 Oldsmobile Aurora, N/A, ThunderCore-Ultra
  • Fits 2000-2002 Cadillac Eldorado, N/A, ThunderCore-Ultra

Detailed Description

Walker 900-P2040-8 is a coil boot kit for ignition service on ThunderCore-Ultra applications. It is listed for 2000-2003 Cadillac DeVille, 2000-2003 Cadillac Seville, 2001-2003 Oldsmobile Aurora, and 2000-2002 Cadillac Eldorado. Use this part when the original coil boot shows signs of heat damage, cracking, carbon tracking, or loss of insulation at the spark plug connection. This part cross-references Monroe Shocks & Struts (e.g., 172286) for the same application.

Common Repair Uses

  • Misfire caused by worn ignition boot insulation
  • Hard starting related to weak spark transfer
  • Rough idle from damaged coil-to-plug connection
  • Visible boot cracking or heat-related deterioration
  • Intermittent ignition performance on ThunderCore-Ultra systems

Installation Notes

Verify the vehicle year, make, model, and ThunderCore-Ultra application before installation. Inspect the coil, plug well, and spark plug condition at the same time so the new boot is not installed over contaminated or damaged components. Follow the service procedure for the specific Cadillac or Oldsmobile ignition layout.

Quality Assurance

Walker ThunderCore-Ultra parts are cataloged for specific ignition applications, and part number 900-P2040-8 is matched to the listed vehicle fitments for accurate replacement selection.

This part fits 14 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersPositionNotes
2003CadillacDeVille4.6LV8N/AThunderCore-Ultra
2003CadillacSeville4.6LV8N/AThunderCore-Ultra
2003OldsmobileAurora4.0LV8N/AThunderCore-Ultra
2002CadillacDeVille4.6LV8N/AThunderCore-Ultra
2002CadillacEldorado4.6LV8N/AThunderCore-Ultra
2002CadillacSeville4.6LV8N/AThunderCore-Ultra
2002OldsmobileAurora4.0LV8N/AThunderCore-Ultra
2001CadillacDeVille4.6LV8N/AThunderCore-Ultra
2001CadillacEldorado4.6LV8N/AThunderCore-Ultra
2001CadillacSeville4.6LV8N/AThunderCore-Ultra
2001OldsmobileAurora4.0LV8N/AThunderCore-Ultra
2000CadillacDeVille4.6LV8N/AThunderCore-Ultra
2000CadillacEldorado4.6LV8N/AThunderCore-Ultra
2000CadillacSeville4.6LV8N/AThunderCore-Ultra