Denso 671-9004 Spark Plug Wire Set

Brand Denso 671-9004
Distributor Coil End Terminal Type Male
Insulation Outside Diameter 8.00
Spark Plug Boot Material Silicone
Spark Plug End Boot Degree 180
Spark Plug End Boot Quantity Straight 12
Spark Plug End Terminal Type FEMALE
Product line 8mm
Fits Jaguar · 28 vehicles

OE-style replacement. Matches factory form, fit, color, and performance.

Silicone boots. Help resist heat and maintain reliable insulation.

8mm wire design. Sized for consistent ignition performance.

Cross-references ACDelco 901B, ACDelco 901D and Airtex 2X1440 for the same application. See all 16.

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Denso 671-9004 Ignition Wire Set for Jaguar

Denso 671-9004 is a First Time Fit spark plug wire set built to match the form, fit, color, and performance of the original factory wiring. It is a direct OE-style replacement for Jaguar XJ12 and Jaguar XJS applications that use 8mm ignition wires.

Key Features

  • Silicone spark plug boot material for heat resistance and flexibility
  • 8.00 mm outside diameter insulation
  • 180-degree spark plug end boot design
  • Female spark plug end terminal type
  • Male distributor/coil end terminal type
  • Built to meet or exceed OE/OES standards
  • First Time Fit construction for factory-style replacement

Product Details

This Denso spark plug wire set is engineered for Jaguar ignition systems that require an 8mm wire diameter and OE-style terminal configuration. The Denso 671-9004 follows the original fit and appearance expected on 1973-1979 Jaguar XJ12, 1981-1988 Jaguar XJ12, and 1976-1988 Jaguar XJS models, making it a practical choice when replacing aging ignition leads on classic Jaguar V12 applications. This part cross-references ACDelco (e.g., 901B, 901D) for the same application.

Common Issues This Part Can Address

  • Cracked or heat-damaged ignition wire insulation
  • Misfires caused by worn plug wire terminals
  • Hard starting related to deteriorated ignition leads
  • Voltage leakage from aged silicone or rubber wire jackets
  • Rough idle from inconsistent spark delivery

Installation Notes and Tips

Verify the wire routing and terminal style before installation on Jaguar XJ12 or Jaguar XJS applications. Match each lead to the correct cylinder and distributor/coil connection, and inspect the boots for full seating at both ends. Confirm that the vehicle uses 8mm ignition wire specifications before ordering the Denso 671-9004.

Quality Assurance

Denso’s First Time Fit line is built to mirror factory-installed wire sets in form, fit, color, and performance. Construction is designed to meet or exceed OE/OES standards for consistent ignition system service on Jaguar applications.

This part fits 28 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelPositionNotes
1988JaguarXJ12N/A8mm
1988JaguarXJSN/A8mm
1987JaguarXJ12N/A8mm
1987JaguarXJSN/A8mm
1986JaguarXJ12N/A8mm
1986JaguarXJSN/A8mm
1985JaguarXJ12N/A8mm
1985JaguarXJSN/A8mm
1984JaguarXJ12N/A8mm
1984JaguarXJSN/A8mm
1983JaguarXJ12N/A8mm
1983JaguarXJSN/A8mm
1982JaguarXJ12N/A8mm
1982JaguarXJSN/A8mm
1981JaguarXJ12N/A8mm
1981JaguarXJSN/A8mm
1980JaguarXJSN/A8mm
1979JaguarXJ12N/A8mm
1979JaguarXJSN/A8mm
1978JaguarXJ12N/A8mm
1978JaguarXJSN/A8mm
1977JaguarXJ12N/A8mm
1977JaguarXJSN/A8mm
1976JaguarXJ12N/A8mm
1976JaguarXJSN/A8mm
1975JaguarXJ12N/A8mm
1974JaguarXJ12N/A8mm
1973JaguarXJ12N/A8mm
Directly replaces or cross-references 16 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
ACDelco — 901BACDelco — 901DAirtex — 2X1440Belden — 700169Belden — 700823BorgWarner — CH71007CARQUEST — 35-2004GP - Guaranteed Parts — 6921Kem — 60_2174NAPA Mileage Plus — 6719004NGK — EUX068NGK — EUZ035PROConnect — 142004Sorensen — 62189STI — 150Wells — QW1309