SKU: 73765|UPC: 084663737657
Moroso Ultra 40 8.5mm Multi-Angle Boot Spark Plug Wire SetBlack (Ford 289 / 302 / 351W HEI-Style Cap)
The Moroso Ultra 40 8.5mm Spark Plug Wire Set in Black is a premium ignition upgrade for Ford small block engines (289, 302, and 351W) equipped with HEI-style distributors. These high-performance wires feature an 8.5mm silicone jacket with multi-angle boots for easy routing and a secure fit in tight engine bays. The Ultra 40 series delivers excellent conductivity, superior spark energy, and maximum resistance to heat, abrasion, and electrical interference.
The black finish provides a clean, factory-like appearance while the high-quality construction ensures reliable performance under high RPM and high-heat conditions. Ideal for classic Ford muscle cars, street rods, or high-horsepower small block builds where dependable ignition is critical.
Key Features
- 8.5mm Ultra 40 ConstructionHigh-conductivity core with excellent spark delivery
- Multi-Angle BootsAllows flexible routing and secure connection for HEI-style caps
- Heavy-Duty Silicone JacketSuperior heat and abrasion resistance
- Black FinishClean, factory-like appearance
- Ford Small Block SpecificDirect fit for 289, 302, and 351W with HEI-style distributor
| Spec | Detail |
|---|---|
| Part Number | 73765 |
| Brand | Moroso |
| Type | Ultra 40 8.5mm Spark Plug Wire Set |
| Compatibility | Ford 289 / 302 / 351W with HEI-Style Distributor |
| Wire Diameter | 8.5mm |
| Boot Style | Multi-Angle |
| Color | Black |
| Country of Origin | United States |
| Warranty | Moroso Limited Warranty |
Whats Included
- Complete Set of 8 Spark Plug Wires
- Multi-angle boots for easy installation
Product Notes
- Designed for Ford 289, 302, and 351W small block engines with HEI-style distributor
- Provides improved spark energy and resistance to heat and interference
- Professional installation recommended for proper routing and connection
Installation Notes
- Direct replacement for factory spark plug wires
- Route wires away from heat sources and secure properly
- Estimated time: 3060 minutes
This Part Fits
| Year Range | Make | Model | Engine | Notes |
|---|---|---|---|---|
| Various | Ford | Mustang, Fairlane, etc. | 289 / 302 / 351W Small Block with HEI-Style Distributor | 8.5mm Ultra 40 Spark Plug Wire Set (Black) |
Why Choose Moroso Ultra 40 Spark Plug Wires?
- High-conductivity 8.5mm wires with multi-angle boots for reliable spark delivery
- Superior heat and abrasion resistance for high-performance applications
- Clean black finish that complements classic Ford engine bays
Frequently Asked Questions
- Q: Will this wire set fit my 1969 Ford Mustang with a 351W and HEI distributor?
A: Yes, it is designed for Ford 289, 302, and 351W small block engines with HEI-style distributor. - Q: Are these wires pre-cut or universal?
A: They are a pre-terminated set specifically for Ford small block HEI applications with multi-angle boots. - Q: Is professional installation recommended?
A: Recommended for proper routing and to avoid cross-firing or heat damage.
Shipping & Handling
- Method: Ground UPS or FedEx
- Availability: In stockships same or next business day
- Packaging: Secure Moroso retail packaging








