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NGK 8140 Spark Plug Wire Set
| Brand | NGK 8140 |
|---|---|
| Core Material | Mag (Var. Pitch) |
| Insulation Color | Blue |
| Insulation Material | Silicone |
| Insulation Outside Diameter | 7.00 |
| Noise Suppression Type | Yes |
| Part Number | RC-TX12 |
| Stock Number | 8140 |
| Universal Or Specific Fit | Specific |
| Product line | NGK Spark Plug Wire Set |
| Fits | Toyota · 6 vehicles |
OE-standard replacement. Built to meet original-equipment durability and performance expectations.
Silicone insulation. Helps resist heat and wear for dependable ignition performance.
Noise suppression. Helps reduce electrical interference in the ignition system.
Cross-references AP Exhaust 700469, DENSO Auto Parts 671-6173 and Dorman - HELP 96471 for the same application. See all 15.
NGK 8140 Spark Plug Wire Set
The NGK 8140 spark plug wire set is a specific-fit ignition wire replacement for select Toyota applications. Built with blue silicone insulation and noise suppression, it is made to support stable spark delivery and consistent ignition performance in daily driving conditions.
Key Features
- Specific-fit spark plug wire set for direct application matching
- Blue silicone insulation for heat resistance and durability
- Mag (variable pitch) core material for ignition signal control
- Noise suppression design to help reduce electrical interference
- 7.00 mm insulation outside diameter
- NGK part number 8140, also referenced as RC-TX12
Product Details
NGK Spark Plug Wire Set 8140 is part of NGK’s ignition product line, which focuses on OE-level replacement components for domestic and import vehicles. NGK draws on decades of ignition-system experience and global OE expertise to produce wire sets that meet durability and operational performance expectations for service replacement. This wire set is listed for 1989-1991 Toyota 4Runner and 1989-1991 Toyota Pickup, making it a direct search match for Toyota 4Runner ignition wire set and Toyota Pickup spark plug wire replacement needs. The part number 8140 is also cross-referenced as RC-TX12 for application matching.
Common Issues This Part Can Address
- Misfires caused by worn or damaged ignition wires
- Hard starting related to weak spark transfer
- Rough idle from inconsistent ignition output
- Electrical noise affecting ignition system performance
- Cracked or heat-aged wire insulation
Installation Notes and Tips
Verify the vehicle application before installation and route each wire to match the original layout. Inspect distributor cap, ignition coil, and spark plugs at the same time, since worn related components can affect ignition performance. Confirm the wire ends are fully seated and kept away from hot exhaust surfaces and moving parts.
Quality Assurance
NGK manufactures ignition components with a focus on OE standards, durability, and consistent performance. This 8140 wire set reflects NGK’s long-standing ignition specialization and is built for service replacement on the listed Toyota 4Runner and Toyota Pickup applications.
| Year | Make | Model | Liters | Cylinders | Position | Notes |
|---|---|---|---|---|---|---|
| 1991 | Toyota | 4Runner | 3.0L | V6 | N/A | NGK Spark Plug Wire Set |
| 1991 | Toyota | Pickup | 3.0L | V6 | N/A | NGK Spark Plug Wire Set |
| 1990 | Toyota | 4Runner | 3.0L | V6 | N/A | NGK Spark Plug Wire Set |
| 1990 | Toyota | Pickup | 3.0L | V6 | N/A | NGK Spark Plug Wire Set |
| 1989 | Toyota | 4Runner | 3.0L | V6 | N/A | NGK Spark Plug Wire Set |
| 1989 | Toyota | Pickup | 3.0L | V6 | N/A | NGK Spark Plug Wire Set |
| No rows match your filter. | ||||||