Balmar Alternator AT-SF-165-J10 165A 12V Single Foot 1.2in

Balmar AT-SF-165-J10 Alternator

Alternator AT-SF-165-J10 AT Series, 165A, 12V, Spindle Mount (Single Foot), 1-2in, J10 AltMount Serpentine Pulley, Isolated Ground. It is a replacement alternator for boats with large battery banks, designed for use with an external regulator.

1″ Motorola-Style Mounting; Typical for Westerbeke, Lehman, Hino & Pathfinder Engines

2″ Delco-Style Mounting; Typical for Volvo Penta (Gas & Diesel), John Deere, Perkins, Mercruiser, Pleasurecraft, Crusader, Indmar, Marine Power & other GM-based Engines

Replaces: AT-SF-165-12-IG

Specifications

• Output: 165A at 12V
• Isolated ground (dedicated terminal)
• Mount: 1 or 2 inch single foot (spindle)
• Pulley: J10 AltMount Serpentine Pulley, 2.47 inch diameter
• Case diameter: 5.28 inches
• Overall height: 8.18 inches
• Overall length with pulley: 6.74 inches
• Power take-off: 5.2 HP
• Low rpm cut-in: 1,320 rpm; maximum alternator speed: 12,000 rpm
• Regulation: external P-type (MC-614)
• Normal operating temperature: 180°F (82°C); maximum: 225°F (108°C)
• Mounting foot bore: 1/2 inch on 1 inch mounts, 3/8 inch on 2 inch mounts

Questions & Answers

Does it come with a regulator?

No. AT-SF-165-J10 is Balmar's individual alternator part number. Balmar's matching kit adds the MC-614-H Max Charge regulator and MC-TS-A and MC-TS-B temperature sensors.

Do I need to change my belts?

Balmar says AT alternators should only be used with Dual Vee or multi-groove serpentine belts. An AltMount conversion kit may be required if your engine does not have a suitable pulley.

Will my tachometer still work?

Balmar notes that AT alternators may require a Tachometer Signal Stabilizer (part number 15-TSS) if your tachometer is not adjustable.