Sierra Power Pack 18-5760-1, Replaces OMC 582138/582400/582556/582642, for 235 HP Johnson/Evinrude Outboards 1979-1984

The Sierra 18-5760-1 Power Pack is a marine ignition component built for Johnson and Evinrude outboard applications, engineered to meet or exceed the performance of the original equipment part it replaces. It is a direct fit for 235 HP outboards from the 1979-1984 model years. Note that this engine application requires two Power Packs per engine, so buyers replacing a full ignition set should order two units. The Power Pack carries a machined exterior finish and is supplied as a single unit per package. Because it is a like-for-like replacement for the original OMC ignition module, installation follows the same mounting and wiring configuration as the factory part, without modification to the outboard's ignition harness. Sierra cross-references this Power Pack to a range of OEM and aftermarket part numbers, making it straightforward to confirm compatibility against an old or worn unit before ordering. This part is intended for buyers maintaining or restoring 235 HP Johnson and Evinrude outboards who need a reliable ignition Power Pack replacement.

Specifications

• Brand: Sierra
• Manufacturer Part Number: 18-5760-1
• Product Type: Power Pack
• Weight: 0.3 pounds
• Product Dimensions: 0.39 x 0.39 x 0.39 inches
• Exterior Finish: Machined
• UPC: 808282392352
• Fitment: 235 HP outboards, 1979-1984
• Quantity Required: 2 Power Packs required per engine
• OEM Cross Reference: OMC 582138, 582400, 582556, 582642; CDI 113-2138, 113-2556; GLM 75390; Mallory 9-25001

Fitment

• 235 HP Johnson/Evinrude outboards, 1979-1984 (2 Power Packs required per engine)

Replaces (OEM)

• OMC 582138
• OMC 582400
• OMC 582556
• OMC 582642
• CDI 113-2138
• CDI 113-2556
• GLM 75390
• Mallory 9-25001

Frequently Asked Questions

What engines does the Sierra 18-5760-1 Power Pack fit? The 18-5760-1 Power Pack fits 235 HP Johnson and Evinrude outboards from the 1979-1984 model years.

How many Power Packs does my engine need? Two Power Packs are required per engine for the 235 HP Johnson/Evinrude application covered by the 18-5760-1, so order two units for a complete replacement.

Is the Sierra 18-5760-1 a genuine OEM part or aftermarket? The 18-5760-1 is a Sierra-manufactured replacement part, not an original OMC part, and Sierra states it meets or exceeds the performance of the original equipment part it replaces.

What OEM numbers does the 18-5760-1 Power Pack cross-reference to? It replaces OMC 582138, 582400, 582556, and 582642, as well as CDI 113-2138 and 113-2556, GLM 75390, and Mallory 9-25001.

What is the exterior finish of the 18-5760-1 Power Pack? The Sierra 18-5760-1 Power Pack has a machined exterior finish.

How much does the 18-5760-1 Power Pack weigh? The Sierra 18-5760-1 Power Pack weighs 0.3 pounds.

What are the dimensions of the 18-5760-1 Power Pack? The Power Pack measures 0.39 x 0.39 x 0.39 inches.

Does the 18-5760-1 come with mounting hardware or a cover? The 18-5760-1 package includes one Power Pack unit; it does not include a separate insulated pad or cover.

Will the 18-5760-1 work on other Johnson or Evinrude horsepower models? The 18-5760-1 is specified for the 235 HP Johnson/Evinrude application from 1979-1984; other horsepower and year combinations use different Sierra Power Pack part numbers.

Is the 18-5760-1 Power Pack a universal fit part? No, while it is broadly compatible with equivalent OEM Power Pack applications through its cross-reference numbers, the 18-5760-1 is specifically matched to 235 HP Johnson/Evinrude outboards, 1979-1984.

Can the 18-5760-1 replace a CDI or Mallory ignition Power Pack? Yes, the 18-5760-1 cross-references directly to CDI 113-2138, CDI 113-2556, and Mallory 9-25001, so it can replace those parts on a compatible 235 HP Johnson/Evinrude outboard.