DEI Wire Markers 8-Piece Set (Numbered 1-8) – Black
The DEI Wire Markers 8-Piece Set (Numbered 1-8) in black is a professional solution for clearly labeling spark plug wires, ignition leads, or any under-hood wiring. Made from high-temperature Mil-Spec black heat shrink tubing, these markers are durable enough to withstand extreme engine bay temperatures while remaining easy to install. The high 3:1 shrink ratio allows the markers to easily slide over plug boot ends and then shrink tightly onto the wire for a secure fit. Each marker is printed with high-visibility white ink that is oil and chemical resistant, ensuring long-lasting readability. This set provides a clean, organized, and professional appearance under the hood while helping you keep track of wire order during maintenance or modifications.
Key Features
- High-Temperature Mil-Spec Material – Withstands extreme under-hood heat
- 3:1 Shrink Ratio – Easily slides over plug boots and shrinks tightly to the wire
- Numbered 1-8 – Clearly marked with oil and chemical resistant white ink for easy identification
- 8-Piece Set – Perfect for labeling all spark plug wires on most 4-, 6-, or 8-cylinder engines
- Professional Look – Creates a clean, organized engine bay appearance
| Spec | Detail |
|---|---|
| Part Number | 10849 |
| Brand | DEI (Design Engineering Inc.) |
| Type | Numbered Wire Marker Set (1-8) |
| Material | High-Temperature Mil-Spec Heat Shrink Tubing |
| Shrink Ratio | 3:1 |
| Color | Black with White Numbering |
| Quantity | 8 pieces |
| Country of Origin | United States |
| Warranty | DEI Standard Product Warranty |
Whats Included
- 8 x Numbered Wire Markers (1 through 8)
- Installation instructions
Product Notes
- Ideal for labeling spark plug wires, ignition leads, or any under-hood wiring
- High-visibility white numbering is oil and chemical resistant
- Provides a clean, professional look while making maintenance easier
Installation Notes
- Slide marker over plug boot end and apply heat to shrink tightly onto the wire
- Estimated time: 5–10 minutes for a full set
- Use a heat gun or lighter for proper shrinking (avoid direct flame if possible)
Why Choose DEI Wire Markers?
- High-temperature Mil-Spec material ensures long-term durability in engine bays
- Easy-to-install 3:1 shrink ratio for a secure, professional finish
- Helps keep wiring organized and simplifies future maintenance
Frequently Asked Questions
-
Q: Are these markers suitable for spark plug wires?
A: Yes, they are specifically designed for labeling spark plug wires and other high-temperature under-hood wiring. -
Q: How do I install them?
A: Slide the marker over the plug boot end, then apply heat to shrink it tightly onto the wire. -
Q: Will the numbers stay visible over time?
A: Yes, the white ink is oil and chemical resistant for long-lasting readability.
Shipping & Handling
- Method: Ground UPS or FedEx
- Availability: In stock – ships same or next business day
- Packaging: Official DEI retail packaging
DEI
DEI, Design Engineering Inc parts and accessories for turbocharged imports, V8 muscle cars, Jeeps, trucks, hot rods, track cars, and universal fabrication projects are stocked at Black Ops Auto Works. Shop thermal wrap, exhaust wrap, heat sleeves, reflective barriers, turbo blankets, sound-deadening mats, floor insulation, firewall kits, wire protection, locking ties, and installation accessories for street performance, reliable repairs, and application-specific upgrades. Every product is filterable by year, make, model, trim, engine, and drivetrain so the correct part ships the first time. Black Ops Auto Works carries 267 collection SKUs across fitment, electrical or mechanical function, materials, installation needs, and performance goals. Thermal Wrap for Headers and Exhaust DEI exhaust wrap and heat shields manage radiant heat around headers, downpipes, and exhaust routing. Use the specified width, material, overlap, and retention hardware for the component and available cle...
View DEI Products


