Sierra 18-8819-1 MagForce 7 Inch 8mm Spark Plug Wire Lead for Mercury/Mariner and Chrysler Force Engines

The Sierra 18-8819-1 is a 7 inch, 8mm marine spark plug wire lead built for Mercury/Mariner and Chrysler Force engines. It is part of Sierra's MagForce line of ignition wires, engineered to be electronics friendly so it protects onboard electronic devices and electronic engine controls from RFI and EMI while still delivering maximum voltage to the spark plug. The wire uses a Kevlar-reinforced core paired with a stainless steel wound conductor to support strong horsepower and consistent engine performance, and it is wrapped in a silicone jacket with silicone boots that hold up under high underhood and engine-bay temperatures.

Corrosion resistance is a key feature of this lead: Posi-lock stainless steel spark plug and distributor terminals resist corrosion and maintain solid electrical conductivity over time in the marine environment. The exact-fit design is intended for straightforward installation without modification. This is a single 7 inch, 8mm wire lead rather than a full ignition wire set, making it suited for replacing an individual damaged or deteriorated lead.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-8819-1
• Wire Length: 7 inches
• Wire Gauge: 8mm
• Core: Kevlar-reinforced core with stainless steel wound conductor
• Jacket Material: Silicone
• Terminal Material: Stainless steel (Posi-lock)
• RFI/EMI Suppression: Yes, Electronics Friendly MagForce design
• Weight: 0.08 pounds
• Product Dimensions: 0.39 x 0.39 x 0.39 inches
• UPC: 808282194475

Fitment

• Mercury/Mariner engines
• Chrysler Force engines

Replaces (OEM)

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

Frequently Asked Questions

What length and gauge is the Sierra 18-8819-1 spark plug wire? The Sierra 18-8819-1 is a 7 inch, 8mm spark plug wire lead.

Which engines does the 18-8819-1 spark plug wire fit? This wire is designed for Mercury/Mariner and Chrysler Force engines.

Does the 18-8819-1 come as a single wire or a full set? It is a single 7 inch spark plug wire lead, not a complete ignition wire set, so it is intended for replacing one individual wire.

What is the core made of in this Sierra spark plug wire? The 18-8819-1 uses a Kevlar-reinforced core with a stainless steel wound conductor for durability and consistent engine performance.

Will this spark plug wire interfere with onboard electronics? No, the 18-8819-1 is part of Sierra's MagForce line, which is designed to be Electronics Friendly, suppressing RFI and EMI so it does not interfere with electronic devices or electronic engine controls.

What material are the terminals made from on the 18-8819-1? The terminals are Posi-lock stainless steel, which resists corrosion and maintains reliable conductivity in the marine environment.

How much does the Sierra 18-8819-1 spark plug wire weigh? The 18-8819-1 spark plug wire weighs 0.08 pounds.

Is the 18-8819-1 wire resistant to high heat? Yes, the wire and boots use silicone jacketing designed for high-temperature protection in the engine bay.

Are there OEM cross-reference numbers for the 18-8819-1? No OEM cross-reference number is listed for the Sierra 18-8819-1 spark plug wire lead.

Is installation of the 18-8819-1 straightforward? Yes, the 18-8819-1 uses an exact-fit design intended for easy installation in place of the original wire.

What is the UPC for this product? The Sierra 18-8819-1 spark plug wire lead has UPC 808282194475.