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Alternator Replacement / Heavy Duty Upgrade Kit 105A

Part #: K2157

An upgrade from the original 51 amp alternator to a 105 amp heavy duty alternator. Today's electrical demands call for more power! With this alternator you can top up your battery with fewer hours on your engine and less diesel too, plus it provides the power you need for cool new add-on electronic gadgets. Replaces Prestolite or Mortorola alternators with 5/8" diameter shaft.

Fits these Universal Engine Models:
• 5411 (Catalina 27, Catalina 30)
• M-12 (Catalina 25, Capri 26)
• M2-12 (Catalina 25, Capri 26)
• M-18 (Catalina 27, Catalina 30)
• M-25 (Catalina 30, Catalina 34, Catalina 36)
• M-25XP (Catalina 28, Catalina 30, Catalina 34, Catalina 36)
• M3-20 (Catalina 28)
• M-35 (Catalina 34, Catalina 36)
Does not fit the "B" series Universal engine models. This upgrade is only appropriate for the Universal engine models listed above.

• 105 amp heavy duty alternator
• Internal regulator
• Mount kit for 2" mounting foot
• Wire assembly 4 AWG x 32" w/5/16" lugs handle additional current
• Manufacturer instructions and instrument adjustment reference guide
Re-use your existing pulley

The included mounting foot kit changes the 1" wide foot of the alternator to a 2" wide foot to match the engine mounting bracket. In addition, the mounting foot can accept a 1/2" diameter bolt or use the included sleeve for use with a 3/8" diameter bolt, whichever matches your existing bracket bolt. 1 year warranty.

Use the included wire assembly to connect the high output alternator to the starter. You may want to check the gauge and condition of wire from the starter to the battery and the battery back to the alternator to ensure the wire can handle the new increased electrical load.

Recommended minimum wire sizes for output current:
• 5' or less: No. 8
• 5' to 10': No. 6
• 10' to 20': No. 4

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