SKP SK13778 Alternator
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SKP

SKP SK13778 Alternator

Brand SKP SK13778
Voltage 12v
Fan Type Internal
Rotation Direction Clockwise (right)
Family Hitachi
Amperage Rating 70
Fits Nissan · 16 vehicles

12V output. Built for standard charging-system voltage.

Internal fan. Helps manage heat inside the alternator.

70-amp rating. Provides dependable charging capacity.

Cross-references BBB Industries 13778, Quality-Built 13778N and 23100-3S500 for the same application. See all 4.

$160.02Free shipping
In stock · usually ships same day before 1pm CST
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Order total $160.02
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Free returns within 60 days if it doesn't fit when fitment is verified.
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Alternator for Nissan Frontier and Xterra

Restore charging performance with the SKP SK13778 alternator, built for 12V electrical systems and rated at 70 amps. This replacement alternator uses an internal fan and clockwise rotation, making it a direct-fit option for select Nissan Frontier and Nissan Xterra applications.

  • 12V alternator with 70 amp output
  • Internal fan design
  • Clockwise (right) rotation direction
  • HITACHI family configuration
  • Negative polarity with M8-1.25 output stud

Fitment Details

  • Fits 1998-2004 Nissan Frontier, N/A; 12 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud
  • Fits 2000-2004 Nissan Xterra, N/A; 12 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud

The SKP SK13778 is a replacement alternator for Nissan Frontier and Xterra models that use the specified 12-volt, 70-amp Hitachi-style configuration. It cross-references BBB Industries 13778 for the same application. Use SK13778 when you need a charging-system replacement that matches the original electrical layout, output rating, and mounting configuration for these Nissan vehicles.

Common Problems This Part Can Address

  • Battery warning light caused by weak charging output
  • Low system voltage at idle or under electrical load
  • Dim headlights or inconsistent accessory performance
  • Charging failure from a worn internal alternator component
  • Starting issues related to insufficient battery recharge

Installation Notes and Tips

Verify the vehicle’s original alternator specifications before installation, including 12V operation, 70A output, clockwise rotation, negative polarity, and the M8-1.25 output stud. Confirm the 1:00 position and Hitachi family layout match the removed unit on your Nissan Frontier or Nissan Xterra. Inspect the charging circuit, battery condition, and belt drive components during replacement to help ensure proper system operation.

Quality Assurance

SKP electrical components are built to meet replacement-part requirements for the listed applications. This part also cross-references Quality-Built 13778N and OEM-style reference 23100-3S500 for the same fitment.

Related reading

This part fits 16 vehicles
Always verify fitment with your vehicle's VIN if unsure. Submodel & trim restrictions may apply.
YearMakeModelLitersCylindersNotes
2008NissanPickup2.4LL4w/ 1V Groove Pulley
2007NissanPickup2.4LL4w/ 1V Groove Pulley
2004NissanFrontier2.4LL412 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud
2004NissanPickup2.4LL4w/ 1V Groove Pulley
2004NissanXterra2.4LL412 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud
2003NissanFrontier2.4LL412 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud
2003NissanXterra2.4LL412 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud
2002NissanFrontier2.4LL412 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud
2002NissanXterra2.4LL412 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud
2001NissanFrontier2.4LL412 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud
2001NissanXterra2.4LL412 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud
2000NissanFrontier2.4LL412 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud
2000NissanPickup2.4LL4w/ 1V Groove Pulley
2000NissanXterra2.4LL412 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud
1999NissanFrontier2.4LL412 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud
1998NissanFrontier2.4LL412 Volts; 70A; 1:00 Position; Negative Polarity; M8-1.25 Output Stud
Directly replaces or cross-references 4 part numbers
Cross-reference numbers are provided for identification purposes only. Always confirm fitment before ordering.
BBB Industries — 13778Quality-Built — 13778N23100-3S500213778