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Moroso Ultra 40 Ignition Wire Sets

5.0 out of 5 stars 8 Customer Reviews

Moroso offers Ultra 40 ignition wires—cost-effective versions of their race-proven wires without the heat sleeving. Sporting aluminum shields and available in a cho
Moroso offers Ultra 40 ignition wires—cost-effective versions of their race-proven wires without the heat sleeving. Sporting aluminum shields and available in a choice of wire colors, these Ultra 40 wires are an excellent choice to spark the energy you need.

Moroso Ultra 40 ignition wires feature:

* 40 ohms of resistance per foot
* Highly engineered spiral-wound conductor
* More energy to the spark plugs with less electrical interference
* Silicone jacket protects against heat, chafing, and contaminants
* Locking stainless steel terminals that fold over and crimp, stay connected, and won't vibrate loose lik
Moroso offers Ultra 40 ignition wires—cost-effective versions of their race-proven wires without the heat sleeving. Sporting aluminum shields and available in a choice of wire colors, these Ultra 40 wires are an excellent choice to spark the energy you need.

Moroso Ultra 40 ignition wires feature:

* 40 ohms of resistance per foot
* Highly engineered spiral-wound conductor
* More energy to the spark plugs with less electrical interference
* Silicone jacket protects against heat, chafing, and contaminants
* Locking stainless steel terminals that fold over and crimp, stay connected, and won't vibrate loose like core crimped brands
* Aluminum shielded spark plug ends are resilient to high temperatures

Results 1 - 6 of 6

Spark Plug Wires, Ultra 40, Assembled, Spiral Core, 8.50mm, Red, With Heat Shield, Chevy, LS, LT, Set

Part Number: MOR-73740

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Spark Plug Wires, Ultra 40, Assembled, Spiral Core, 8.50mm, Red, Chevy, LS, LT, Set

Part Number: MOR-73741

Not Yet Reviewed

Estimated Ship Date: Today

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Spark Plug Wires, Ultra 40, Assembled, Spiral Core, 8.50mm, Black, Chevy, LS, LT, Set

Part Number: MOR-73745

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Today

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Spark Plug Wire Sets, Ultra 40, Assembled, Spiral Core, 7mm, Black, 135 degree Spark Plug Boots, Chevy, 5.3/6.2/6.6L Small Block Gen V, Set of 8

Part Number: MOR-73731

Not Yet Reviewed

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Spark Plug Wires, Ultra 40, Assembled, Spiral Core, 8.50mm, Black, With Heat Shield, Chevy, LS, LT, Set

Part Number: MOR-73744

5.0 out of 5 stars ( 1 )

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

Spark Plug Wire Sets, Ultra 40, Spiral Core, 7mm, Red Wires, Straight Plug Boots, Chevrolet, Small Block LS, Small Block Gen V, Set of 8

Part Number: MOR-73837

Not Yet Reviewed

Estimated Ship Date: Jan 12, 2026 if ordered today

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Estimated Ship Date: Jan 12, 2026 if ordered today

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