Sierra 18-5515 EST Distributor Coil to Module Harness for Delco EST Distributor

The Sierra 18-5515 is a Delco EST Distributor Coil to Module Harness built to connect the ignition coil to the distributor module on engines equipped with a Delco EST distributor. This harness carries the low-voltage signal and power connections between the coil and the EST module, and is the correct replacement when the factory wiring on this circuit has corroded, chafed, or failed from heat and vibration in the engine compartment. The wiring uses copper conductors insulated with polyvinyl chloride (PVC) jacketing for durability in a marine engine environment, and terminates in Rj-series connectors for a direct plug-in fit at the coil and module.

As a Sierra part, the 18-5515 is engineered to meet or exceed the original equipment part it replaces and is backed by Sierra's Industry Leading Customer Satisfaction Warranty. It is intended as a straightforward, direct-fit replacement for engines equipped with a Delco EST distributor, restoring a reliable coil-to-module connection without splicing into or modifying the factory harness.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-5515
• Product Type: Distributor Coil to Module Harness
• Fitment: Engines equipped with a Delco EST Distributor
• Material: Copper, Polyvinyl Chloride (PVC)
• Connector Type: Rj-series
• Item Dimensions: 1.77 x 7.01 x 5 inches
• Weight: 1 pound
• UPC: 808282361075

Fitment

• Engines equipped with a Delco EST Distributor

Frequently Asked Questions

What does the Sierra 18-5515 connect? The Sierra 18-5515 is a wiring harness that connects the ignition coil to the distributor module on engines equipped with a Delco EST distributor.

Will this harness fit any marine engine? The 18-5515 is designed for engines equipped with a Delco EST distributor; it is not a universal fit for engines using other distributor types.

What material is the 18-5515 harness made of? It uses copper conductors with polyvinyl chloride (PVC) insulation, chosen for durability in a marine engine compartment.

What connector type does the 18-5515 use? The harness terminates in Rj-series connectors for a direct plug-in connection at the coil and module.

How much does the Sierra 18-5515 weigh? The Sierra 18-5515 EST Distributor Coil to Module Harness weighs 1 pound.

What are the dimensions of the 18-5515 harness? The 18-5515 measures 1.77 x 7.01 x 5 inches.

Is the Sierra 18-5515 an OEM or aftermarket part? The 18-5515 is a Sierra-branded aftermarket harness engineered to meet or exceed the original equipment part it replaces.

When should I replace the coil to module harness? Replace the 18-5515 when the factory coil-to-module wiring on a Delco EST distributor shows corrosion, chafing, or failure that causes an intermittent or lost ignition signal.

Does the Sierra 18-5515 come with a warranty? Yes, the 18-5515 is covered under Sierra's Industry Leading Customer Satisfaction Warranty against defects in workmanship and materials for the useful life of the product.

Is installation of the 18-5515 harness straightforward? The 18-5515 is a direct plug-in replacement between the coil and the Delco EST distributor module, so it does not require splicing into the factory wiring.

What is included with the Sierra 18-5515? The product is the coil to module wiring harness itself, part number 18-5515, ready to connect at the coil and distributor module.