Sierra Distributor Rotor SIE-18-5404-1

Sierra SIE-18-5404-1 is a marine distributor rotor for Mallory V8 tall cap distributor applications. Current aftermarket listings consistently place this rotor in selected MerCruiser, OMC, Volvo Penta, Crusader, Pleasurecraft, Chris-Craft, and Chrysler inboard applications that use the matching Mallory V8 distributor setup.

Key Features

• Distributor rotor
• Sierra part number: 18-5404-1
• Commonly identified as AP-3064 in aftermarket listings
• For Mallory V8 tall cap distributors
• Marine ignition tune-up replacement part
• UPC commonly listed as 808282244392

Engine Compatibility
Common listings describe Sierra 18-5404-1 for V8 marine engines using Mallory tall cap distributors. Public cross-reference sources tie it to selected MerCruiser stern drive applications, OMC inboard and stern drive applications, Volvo Penta applications, and some Crusader, Pleasurecraft, Chris-Craft, and Chrysler inboard applications. Because rotor fitment is distributor-specific, fitment should be confirmed by engine model, distributor type, and cap style before ordering.

Serial Number Fitment Notice
Fitment should be confirmed by engine model, serial number, and installed distributor type before ordering. The safest match is by the original rotor number and the Mallory V8 tall cap distributor setup, not by engine family alone.

When This Part Needs Replacement
Replace when the rotor shows burning, carbon tracking, corrosion, cracking, looseness, or visible contact wear, or when ignition service reveals weak or inconsistent spark transfer. Rotor condition directly affects spark delivery and ignition reliability.

Installation Notes
Install only on the correct Mallory V8 tall cap distributor application. Confirm the replacement matches the removed rotor exactly before installation, and inspect the distributor cap at the same time. This part is easy to confuse with other Mallory and Prestolite marine rotors, so distributor match is more important than appearance alone.

Alternate / Superseded Part Numbers

• AP-3064
• 18-5404-1
• Mercury MerCruiser 391-5088
• Mercury MerCruiser 391-7057
• Mercury MerCruiser 391-7057T
• Mercury MerCruiser 898253029
• Mercury MerCruiser 8M6001224
• OMC 982211
• Volvo Penta 834975
• Volvo Penta 835710
• Crusader 20223
• Pleasurecraft R103001
• Chris-Craft 16.69-00149
• Chrysler Inboard 868096
• Mallory 9-29407
• GLM 71040

Parts Desk Insight
The key match point on SIE-18-5404-1 is the distributor family. Current sources tie it to Mallory V8 tall cap applications, while some marketplace listings also mention Sierra 18-5425 in overlapping cross-reference contexts, so matching by the original OEM number and exact distributor setup is the safest way to avoid ordering the wrong rotor.

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