Reconditioned gearboxes, transfers and diffs

Reconditioned Diff Centre

Isuzu (Rear)
D-Max | MU-X GT4
3.7 ratio
With Harrop ELocker

SKU: RF-IDC-RR-37L Categories: , , ,

$3,650.00

Product Description

Reconditioned Isuzu D-Max / MU-X Rear Diff Centre (3.7 Ratio with Harrop ELocker)

Is your Isuzu D-Max or MU-X experiencing rear differential whine, worn bearings, or are you looking to upgrade to ultimate selectable off-road traction? Rebuilt by the experienced 4WD drivetrain specialists at Recofactory, this reconditioned 3.7 ratio rear differential centre comes pre-fitted with a heavy-duty Harrop ELocker. Precision-overhauled to meet and exceed OEM specifications, this unit delivers quiet highway running and instant, 100% electromagnetic selectable rear differential lockup at the flip of a switch in steep or muddy terrain.

Vehicle & Product Specifications

Vehicle Compatibility Isuzu D-Max & MU-X Series GT4 (3.7 Ratio Rear Axle)
Differential Position Rear Differential Centre
Differential Type Harrop ELocker (Electromagnetic Selectable Locker)
Gear Ratio 3.70:1 (3.7 Ratio)
Assembly Type Diff Only
Condition Professionally Reconditioned Unit
Price (Excl. Core Deposit) $3,650.00
Warranty 12 Months / 20,000 km Warranty
Exchange Deposit $750 Refundable Core Charge

Rebuild Standards & Key Features

  • Complete Overhaul: Dismantled, clean-inspected, and fitted with new gear sets, Japanese bearings and oil seals.
  • Harrop ELocker Integration: Overhauled and bench-tested specifically to integrate seamlessly with the Harrop electromagnetic locking mechanism for instantaneous 100% drive to both rear wheels.
  • Precision Workshop Setup: Crown wheel backlash, bearing preloads, and gear meshing contact patterns are set by expert driveline technicians to strict workshop tolerances.
  • Heavy-Duty Reliability: Built using premium Japanese bearings and oil seals, and high-grade internal components engineered for demanding touring, towing, and off-road driving.

Why Choose Recofactory?

  • 4WD Drivetrain Specialists: Decades of technical experience in reconditioning 4WD differentials, gearboxes, and transfer cases.
  • Rigorous Quality Control: Every unit undergoes total dismantling, chemical hot-washing, component stress evaluation, and exact bench setup.
  • Australia-Wide Daily Freight: We dispatch reconditioned differentials and driveline assemblies daily nationwide.
  • Backed by Warranty: Supplied with 12 Month / 20,000 km warranty coverage for complete peace of mind.

Exchange Unit & Warranty Information

This product is supplied as a diff only on a mandatory exchange basis. An exchange deposit of $750 is charged upon purchase and is refunded once your matching exchange core unit is received and assessed by our workshop team.

To review core return guidelines, exchange deposit conditions, and full warranty terms, please visit our warranty and exchange info page.

Australia-Wide Freight & Technical Support

Need assistance confirming whether your Isuzu D-Max or MU-X runs a 3.7 ratio or checking Harrop ELocker wiring installation details? Recofactory freights reconditioned differentials nationwide daily. Contact our expert spare parts team today on (07) 5480 6024 or send an online enquiry for expert advice and a fast freight quote.

Exchange Service

The exchange deposit required for reco diffs and gearboxes is $750, and $1000 for reco gearbox/transfers.  The exchange deposit is charged upon purchase – refunded when your exchange unit is received by us.

This product is supplied on an exchange basis.

We dispatch your reconditioned rear diff centre first, then arrange return of your old unit to minimise vehicle downtime.

If you are unable to provide an exchange unit, please contact us to discuss available options.

TO CLAIM YOUR EXCHANGE UNIT REFUND:
1. Send your diff or gearbox back to us in the pallet/box we have sent you secured by the supplied straps – a $150 fee is incurred for non-return/damage of delivery box
2. DRAIN ALL OILS before sending your exchange unit back to us – units sent back not drained incur a $100 fee.
3. Refunds will not be paid for exchange units which are a) disassembled, b) are unservicable or have been run low on oil.
4. We require same for same in exchange units. An LSD for an LSD, and open centre for an open centre etc. Diffs returned with lockers will not receive a refund.
5. To ensure speedy refund of core charge please send your gearbox or diff back to us on the original pallet and label it clearly
6. Don’t forget to include your completed warranty card when sending your exchange unit back to us.

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