Sierra 18-8820-1 Spark Plug Wire Set, Ford HEI, for OMC 5.0L and 5.8L 8-Cylinder Engines 1993-1996

The Sierra 18-8820-1 is an 8-cylinder spark plug wire set built for OMC sterndrive engines equipped with a Ford HEI distributor, covering the 5.0L (Ford) and 5.8L engine applications from 1993 to 1996. Each set includes individually sized wires so cylinder-to-cylinder routing matches factory length: three 42 inch wires, two 38 inch wires, two 27 inch wires, and one 32 inch wire, plus a 14 inch coil wire to complete the ignition circuit.

Terminal ends at both the spark plug and distributor connections are stainless steel, which resists the corrosion that marine engine bays are prone to and helps maintain consistent electrical conductivity over time. The set is designed for use with EST electronic ignition systems and uses Delco EST / Delco EFI style connectors. It ships as a complete single-item set (Unit Count: 1) ready to install in place of a worn or cracked factory wire set.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-8820-1
• Product Type: Spark Plug Wire Set
• Number of Cylinders: 8
• Distributor Type: Ford HEI
• Connector Type: Delco EST, Delco EFI
• Spark Plug Wire Lengths: (3) 42 inches, (2) 38 inches, (2) 27 inches, (1) 32 inches
• Coil Wire Length: 14 inches (1 piece)
• Terminal Material: Stainless steel (spark plug and distributor terminals)
• Material: Stainless Steel
• Number of Items: 1
• Item Dimensions: 0.39 x 0.39 x 0.39 inches
• Weight: 1.99 pounds
• UPC: 808282194482

Fitment

• OMC 5.0L (Ford), 8-cylinder, Ford HEI distributor, 1993-1996
• OMC 5.8L, 8-cylinder, Ford HEI distributor, 1993-1996

Replaces (OEM)

• No OEM cross-reference numbers are listed for this part.

Frequently Asked Questions

What engines does the Sierra 18-8820-1 spark plug wire set fit? It fits OMC 5.0L (Ford) and 5.8L 8-cylinder engines built with a Ford HEI distributor from 1993 to 1996.

How many spark plug wires come in the 18-8820-1 set? The set includes eight spark plug wires sized for an 8-cylinder engine: three 42 inch wires, two 38 inch wires, two 27 inch wires, and one 32 inch wire, plus one 14 inch coil wire.

What material are the wire terminals made from? The spark plug and distributor terminals on the Sierra 18-8820-1 are stainless steel, which resists corrosion for consistent conductivity in a marine engine environment.

Is this wire set compatible with Delco EST or EFI ignition systems? Yes, the 18-8820-1 uses Delco EST / Delco EFI style connectors and is designed for use with EST electronic ignition systems.

Does the 18-8820-1 include a coil wire? Yes, one 14 inch coil wire is included along with the eight spark plug wires in the set.

How much does the Sierra 18-8820-1 wire set weigh? It weighs 1.99 pounds.

Will this wire set work with a GM distributor instead of Ford HEI? The 18-8820-1 is built specifically for engines with a Ford HEI distributor; it is not the listed part for GM Prestolite or Delco EST distributor applications on other engine displacements.

What is the UPC for the Sierra 18-8820-1? The UPC for the Sierra 18-8820-1 spark plug wire set is 808282194482.

Is the 18-8820-1 sold as a complete set or individual wires? It ships as one complete set (Unit Count: 1) containing all eight spark plug wires and the coil wire needed for the engine.

Does the wire length vary by cylinder position? Yes, the Sierra 18-8820-1 set is built with four different wire lengths (42, 38, 32, and 27 inches) to match specific cylinder positions rather than using one uniform length throughout.