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Add to CartSierra replacement ignition coil. All Sierra aftermarket parts are manufactured to meet or exceed OEM requirements.
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Features:
Interchangeable with:
What is the Sierra 18-5438 Ignition Coil used for?
The Sierra 18-5438 Ignition Coil is a replacement coil for GM V-6 and V-8 marine engines equipped with HEI Thunderbolt IV or V ignition systems. It is manufactured by Sierra to meet or exceed OEM requirements and is designed for the ignition applications specified in the product description.
Which engines does the Sierra 18-5438 Ignition Coil fit?
The Sierra 18-5438 fits GM V-6 and V-8 engines with HEI Thunderbolt IV and V ignition. The product description does not provide specific engine model years or serial-number ranges, so verify that your engine uses the specified HEI Thunderbolt IV or V ignition system before ordering.
What are the resistance specifications for the Sierra 18-5438 Ignition Coil?
The Sierra 18-5438 has a listed primary resistance of 1.0±15 ohms and secondary resistance of 8K±20 ohms. The product description also lists primary inductance of 7.85mH+20% and secondary inductance of 36.8H+20% as part of the coil's specifications.
What are the voltage specifications for the Sierra 18-5438 Ignition Coil?
The Sierra 18-5438 has an input voltage specification of 14+0.5V and a minimum output voltage of 16.5KV. These specifications are provided for the replacement ignition coil used with GM V-6 and V-8 engines equipped with HEI Thunderbolt IV and V ignition.
What type of ignition coil is the Sierra 18-5438?
The Sierra 18-5438 is a cannister-shaped replacement ignition coil. Its listed specifications include primary resistance of 1.0±15 ohms, secondary resistance of 8K±20 ohms, primary inductance of 7.85mH+20%, and secondary inductance of 36.8H+20%.
What ignition coil part numbers is the Sierra 18-5438 interchangeable with?
The Sierra 18-5438 is interchangeable with CDI E18-0008, Crusader 37068, and Mallory 9-29701. Listed MerCruiser Stern Drive interchange numbers include 300-8M0079202, 392-7803, 392-7803A4, 392-805570A1, and 392-805570A2. Verify your existing part number and ignition system before replacement.
California Residents: 
WARNING
Cancer and Reproductive Harm -
P65Warnings.ca.gov
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