Moroso's Ultra 40 spark plug wire set delivers race-proven ignition performance for Ford 429 and 460 big-block engines. Each set arrives complete and ready to install, with every wire labeled by cylinder so routing is straightforward and confusion-free. The 8.65mm diameter construction and 40 ohms-per-foot resistance rating keep electrical interference suppressed while maintaining a strong, consistent spark at every plug.
Race-tested wire construction. The Ultra 40 core is the same wire Moroso supplies for competition applications, offered here without heat sleeving for installations where underhood clearance and routing flexibility matter more than additional thermal protection. The 40-ohm-per-foot resistance suppresses RFI that can interfere with modern ignition modules and sensors.
Custom fit for the 429/460 platform. Each wire in the set is cut and terminated specifically for the Ford big-block layout, so there is no trimming, splicing, or guesswork. The set is available with HEI-style terminals and comes in black, blue, or red to match the engine bay aesthetic.
Product Benefits
- Race-Proven Core: Ultra 40 wire used in competition applications, available without heat sleeving.
- 8.65mm Diameter: Thick construction provides durability and effective RFI suppression.
- 40 Ohms Per Foot: Controlled resistance reduces electromagnetic interference with ignition and sensor systems.
- Cylinder-Labeled Wires: Every wire is marked for its corresponding cylinder, simplifying installation.
- Complete Ready-to-Install Set: No trimming or custom termination required.
- HEI Terminal Fitment: Compatible with HEI-style distributors common on Ford big-block builds.
- Three Color Options: Available in black, blue, or red to suit any engine bay build.
Note: Fits Ford 429 and 460 big-block engines. Available in HEI unsleeved configuration. Select your preferred color (black, blue, or red) from the product options.
About Moroso: Moroso Performance Products has manufactured high-quality racing components since 1968, supplying professional and amateur racers with oil pans, ignition wires, vacuum pumps, and related hardware. Moroso products are developed and validated in motorsport environments, then made available for street and track builds across a wide range of domestic and import platforms.
WARNING: California Residents: Cancer and Reproductive Harm;
www.p65warnings.ca.gov
Product Specifications & Vehicle Fitment
Review the product details and confirm compatibility with your vehicle before ordering.
| Specification | Details |
|---|
