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Denso 671-4006 Spark Plug Wire Set
| Brand | Denso 671-4006 |
|---|---|
| Distributor Coil End Terminal Type | Male |
| Insulation Outside Diameter | 7.00 |
| Spark Plug Boot Material | Silicone |
| Spark Plug End Boot Degree | 180 |
| Spark Plug End Boot Quantity Straight | 4 |
| Spark Plug End Terminal Type | FEMALE |
| Product line | 7mm |
| Fits | Geo, Pontiac, Suzuki, Chevrolet, GMC, Mercury, Isuzu, and Mazda · 40 vehicles |
OE direct replacement. Matches factory form, fit, color, and performance.
Silicone boots. Help resist heat and maintain reliable insulation.
7mm wire design. Compact construction for clean, efficient ignition routing.
Cross-references ACDelco 16-844B, ACDelco 904A and Airtex 2X1381 for the same application. See all 32.
Denso 7mm Spark Plug Wire Set 671-4006
Denso First Time Fit ignition wire sets are built to match factory-installed wire sets in form, fit, color, and performance. This Denso 7mm spark plug wire set, part number 671-4006, is made for direct replacement on select Geo, Chevrolet, Pontiac, Suzuki, Mercury, Isuzu, Mazda, and GMC applications.
The 7mm insulation outside diameter, silicone spark plug boot material, 180-degree spark plug end boot, and female spark plug terminal are specified for OE-style routing and connection. The distributor coil end uses a male terminal type, supporting a factory-like ignition wire layout on vehicles such as the Geo Metro, Suzuki Swift, and Chevrolet Tracker.
Key Features
- Denso First Time Fit ignition wire set
- Part number 671-4006
- 7mm insulation outside diameter
- Silicone spark plug boot material
- 180-degree spark plug end boot design
- Female spark plug end terminal type
- Male distributor coil end terminal type
- Built to OE/OES standards for form and performance
Product Details
Denso 671-4006 is a spark plug wire set for ignition service on select compact cars and light trucks from the mid-1980s through the 1990s. The First Time Fit line focuses on factory-style replacement, making it a practical choice when servicing ignition wire routing, terminal fit, and boot configuration on vehicles including the Geo Metro, Pontiac Firefly, and Chevrolet Spectrum. This part cross-references NAPA Mileage Plus 6714006 and CARQUEST 35-4006 for the same application.
Common Issues This Part Can Address
- Misfires caused by worn or damaged ignition wires
- Hard starting from poor spark delivery
- Rough idle related to deteriorated wire insulation
- Intermittent ignition connection at the plug or coil end
- Voltage leakage from cracked or heat-aged boots
Installation Notes and Tips
- Verify engine layout and wire routing before removal.
- Match each lead to the correct cylinder and coil/distributor terminal.
- Inspect spark plugs, distributor cap, and coil components during service.
- Keep wires separated and routed away from hot or moving parts.
- Confirm fitment by year, make, and model before installation.
Quality Assurance
Denso states that First Time Fit ignition wire sets are manufactured to meet or exceed OE/OES standards and are engineered to match factory-installed wire sets in appearance and performance. Compatible With 1995-1997 Geo Metro, 1995-1996 Pontiac Firefly, 1995 Geo Tracker, 1989-1990 Geo Tracker, 1995 Suzuki Swift, 1993 Suzuki Swift, 1992-1994 Suzuki Swift, 1992 Chevrolet Metro, 1989-1990 Chevrolet Tracker, 1989-1990 GMC Tracker, 1987-1990 Mercury Tracer, 1989 Geo Spectrum, 1985-1989 Isuzu I-Mark, 1986-1989 Mazda 323, 1985-1988 Chevrolet Spectrum, and 1985-1988 Pontiac Sunburst.
| Year | Make | Model | Drive Type | Position | Notes |
|---|---|---|---|---|---|
| 1997 | Geo | Metro | — | N/A | 7mm |
| 1996 | Geo | Metro | — | N/A | 7mm |
| 1996 | Pontiac | Firefly | — | N/A | 7mm |
| 1995 | Geo | Metro | — | N/A | 7mm |
| 1995 | Geo | Tracker | RWD | N/A | 7mm |
| 1995 | Pontiac | Firefly | — | N/A | 7mm |
| 1995 | Suzuki | Swift | — | N/A | 7mm |
| 1994 | Suzuki | Swift | — | N/A | Canada Built; 7mm |
| 1993 | Suzuki | Swift | — | N/A | Canada Built; 7mm |
| 1993 | Suzuki | Swift | — | N/A | 7mm |
| 1992 | Chevrolet | Metro | — | N/A | 7mm |
| 1992 | Suzuki | Swift | — | N/A | Canada Built; 7mm |
| 1990 | Chevrolet | Tracker | — | N/A | 7mm |
| 1990 | Geo | Tracker | — | N/A | 7mm |
| 1990 | GMC | Tracker | — | N/A | 7mm |
| 1990 | Mercury | Tracer | — | N/A | 7mm |
| 1989 | Chevrolet | Tracker | — | N/A | 7mm |
| 1989 | Geo | Spectrum | — | N/A | 7mm |
| 1989 | Geo | Tracker | — | N/A | 7mm |
| 1989 | GMC | Tracker | — | N/A | 7mm |
| 1989 | Isuzu | I-Mark | — | N/A | 7mm |
| 1989 | Mazda | 323 | — | N/A | 7mm |
| 1989 | Mercury | Tracer | — | N/A | 7mm |
| 1988 | Chevrolet | Spectrum | — | N/A | 7mm |
| 1988 | Isuzu | I-Mark | — | N/A | 7mm |
| 1988 | Mazda | 323 | — | N/A | 7mm |
| 1988 | Mercury | Tracer | — | N/A | 7mm |
| 1988 | Pontiac | Sunburst | — | N/A | 7mm |
| 1987 | Chevrolet | Spectrum | — | N/A | 7mm |
| 1987 | Isuzu | I-Mark | — | N/A | 7mm |
| 1987 | Mazda | 323 | — | N/A | 7mm |
| 1987 | Mercury | Tracer | — | N/A | 7mm |
| 1987 | Pontiac | Sunburst | — | N/A | 7mm |
| 1986 | Chevrolet | Spectrum | — | N/A | 7mm |
| 1986 | Isuzu | I-Mark | — | N/A | 7mm |
| 1986 | Mazda | 323 | — | N/A | 7mm |
| 1986 | Pontiac | Sunburst | — | N/A | 7mm |
| 1985 | Chevrolet | Spectrum | — | N/A | 7mm |
| 1985 | Isuzu | I-Mark | — | N/A | 7mm |
| 1985 | Pontiac | Sunburst | — | N/A | 7mm |
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