3.72 Ratio GT4 Rear Diff Gear Set for Isuzu D-Max 2008 Onwards

Restore the smooth performance of your Isuzu D-Max with this high-quality 3.72 ratio GT4 rear differential gear set. Designed to fit D-Max models from 2008 onwards, this gear set matches the factory GT4 specification found in many rear diff centres. It’s ideal for replacing worn gears that cause noise, vibration, or reduced towing power.

Key Features:
• Suits rear differential of Isuzu D-Max 2008+ with GT4 spec
• 3.72:1 gear ratio as used in OEM GT4 diff centres
• Built from high-strength steel for durability and smooth operation
• Direct replacement – fits without modification

This gear set is engineered to meet or exceed OEM standards and helps eliminate common issues like whining, backlash, and uneven wear. Whether your original rear diff is noisy, worn, or underperforming, this replacement brings back reliable power delivery and driveline smoothness. It’s the right fix for daily driving, load carrying, or off-road use.

Frequently Asked Questions (FAQs)

Q: Will this gear set fit my Isuzu D-Max?
A: Yes, it fits most Isuzu D-Max models from 2008 onwards that use the GT4 3.72:1 rear diff.

Q: What does GT4 mean?
A: GT4 is Isuzu’s code for a 3.72:1 differential gear ratio found in many D-Max models.

Q: Is this for the front or rear diff?
A: This listing is specifically for the rear differential.

Q: Do I need to modify anything to fit this?
A: No, this is a direct replacement and installs using standard diff rebuild tools.

Nationwide Shipping: No matter where you are in Australia, we can get this part to you. Our fast and reliable shipping service ensures coverage across the entire country, from major cities to regional areas and everywhere in between.

VIN Part Number Matching: Not sure if this part fits your car? Text us your VIN, and we’ll confirm if it's the right match for you!