Isuzu DMAX RG 4JJ3 Upgraded Alternator Kit (BKS-240DMAX)

• High-output 240A charging capacity
  
• Designed specifically for the 4JJ3 platform
  
• Strong, stable voltage under load
  
• Ideal for touring, towing, and work setups
  
• Supports dual battery and high-demand electrical systems
  
• Internal LIN regulator for modern vehicle compatibility
  
• OE-style fitment for straightforward install
  
• Efficient cooling and durable construction
  
• Perfect for fridges, canopy setups, lighting, compressors, and inverters
  

• Voltage: 12V
  
• Output: 240A (cold) / ~217A (hot)
  
• Regulator Type: Internal LIN
  
• Pulley: 7PV Fixed Pulley
  
• Pulley Diameter: 62mm
  
• Shaft Size: 17mm
  
• Mount Leg ID: 55mm
  
• Mount Spacing: 161mm (centre-to-centre)
  
• Terminals: B+, LIN
  
• Ground: Negative
  

This kit is designed for straightforward installation using the included Elevate Automotive wiring harness tailored to the specific engine platform. Professional installation is strongly recommended to ensure correct ECU integration, charging regulation, and dual battery system setup.

Elevate alternator upgrade kits utilising the Jaylec Black Series BKS‑240DMAX 240A alternator are backed by a 2‑year / 25,000 km manufacturer warranty, applicable to 4WD and light commercial vehicle use.

Warranty coverage applies to the Jaylec alternator component only and covers defects in materials and workmanship when:

• Installed in the correct vehicle application
• Fitted with the required wiring upgrades
• Installed correctly by a qualified technician

Faults caused by incorrect installation, insufficient wiring upgrades, voltage-related issues, or use outside the intended application are not covered.

Australia-wide shipping available

Pickup available from Elevate Automotive (by arrangement)

Shipping times vary depending on stock availability

Q: Will this fit my DMAX?

A: This kit suits Isuzu DMAX RG models (2020+) with the 4JJ3 diesel engine.

Q: Can I run lithium batteries with this?
A: Not directly. A proper DC-DC charger or battery management system is required.

Q: Do I need upgraded wiring?
A: Yes — this kit includes an upgraded alternator wiring harness to safely support the increased output.