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Instruction Sheets for Part Number MOR-73631
Moroso Ultra 40 Race Ignition Wire Sets
Spark Plug Wire Sets, Ultra 40 Race Ignition Wire Sets, Assembled, Male/HEI, Spiral Core, Blue Wires, 8.65mm Diameter, Ford, Mercury, 4.7L, 5.0L, Set
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Estimated Ship Date: Oct 28, 2026 Would you rather pick it up?
Overview
Brand:
Manufacturer's Part Number:
73631
Part Type:
Product Line:
Summit Racing Part Number:
MOR-73631
UPC:
084663736315
Assembled:
Yes
Distributor Terminal Type:
Male/HEI
Distributor Boot Color:
Gray
Distributor Boot Material:
Silicone
Spark Plug Boot Ends:
Eight 45/135 degree
Spark Plug Boot Color:
Gray
Spark Plug Boot Material:
Silicone
Diameter (mm):
8.65mm
Wire Color:
Blue
RFI Suppression:
Yes
Coil Wire Included:
Yes
Conductor Style:
Spiral core
Spark Plug Wire Resistance:
40 ohms/ft.
Quantity:
Sold as a set.
Notes:
Ultra 40 insulated cover installed.
Moroso Ultra 40 Race Ignition Wire Sets
Moroso new Ultra 40 Race ignition wire sets are the most powerful and RFI/EMI-resistant wires available for racing today. Features of these 8.65mm wires include a Kevlar® core that's four times stronger than Aramid cores, a class-leading 40 ohms of resistance per foot, nickel copper alloy conductors for superior spark energy transfer, an extra-thick EPDM layer for greater dielectric strength, high-temperature silicone boots that can withstand heat up to 600 degrees, and locking stainless steel plug terminals. Plus, their closely woven fiberglass, silicone-impregnated insulation provides up to 8,000 extra volts of protection, and their extra-thick diameter extends wire life by adding additional insulation against heat, chaffing, and contaminants.
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