Description
A brand new Denso-style alternator built to restore reliable 12V charging to your vehicle.
Product Overview
The OEX DXA4005 is a brand new 12V, 55A alternator designed as a direct-style replacement for Denso-unit applications. Featuring an internal voltage regulator, twin leg mount, and an IR74 pin code, it is engineered to match the key dimensions and electrical specifications of the original Denso-style unit it replaces — simplifying installation without modification in compatible applications.
With a 70mm Section A pulley, 10mm pivot hole, M8×1.25 adjusting hole, 75mm inside mounting leg spread, and a 172mm mount centre-to-centre distance, the DXA4005 is built to drop into the existing bracket and belt configuration of suitable vehicles. This is a new unit — not remanufactured — backed by a one-year OEX warranty.
Key Specifications
- 12V system voltage
- 55A output rating
- Denso-style replacement unit
- Internal voltage regulator (no external regulator required)
- Twin leg alternator mount configuration
- Mount centre-to-centre distance: 172mm
- Inside mounting leg spread: 75mm
- Pivot hole diameter: 10mm
- Adjusting hole thread: M8×1.25
- Pulley outside diameter: 70mm
- Pulley section: A (standard V-belt profile)
- Pin code: IR74
- Brand new unit — not remanufactured
- Weight: 3.4 kg
- 1-year OEX warranty
Features & Benefits
- Internal voltage regulator — Self-contained regulation eliminates dependency on an external regulator, simplifying the electrical circuit and reducing potential failure points. No additional regulator wiring or components required on installation.
- Brand new unit — Unlike remanufactured alternators, the DXA4005 ships as a new unit with fresh internals — no worn brushes, degraded bearings, or reused components to worry about from day one.
- Denso-style design — Engineered to match the mounting geometry and electrical interface of original Denso-unit applications, reducing installation time and the need for custom bracket or wiring modifications.
- Twin leg mount with 172mm centre-to-centre — Precise mounting dimensions allow direct fitment into the original alternator bracket on compatible applications without adaptor plates or spacers.
- 70mm Section A pulley — Standard V-belt pulley profile compatible with existing drive belt configurations on supported engines, eliminating the need for belt replacement or tensioner adjustment in most cases.
- 55A output — Provides sufficient charge capacity for vehicles running standard factory electrical loads, with appropriate headroom for moderate auxiliary additions like driving lights or a UHF radio.
- M8×1.25 adjusting hole — Standard thread specification for alternator belt tensioning, compatible with OEM-style adjustment bolts on supported brackets.
Technical Specs
- Part Number: DXA4005
- Brand: OEX
- Type: Alternator
- Suits Unit Make: Denso
- Voltage: 12V
- Power Rating: 55A
- Regulator Type: Internal
- Pin Code: IR74
- Mount Type: Twin Leg
- Mount Centre-to-Centre: 172mm
- Inside Mounting Legs: 75mm
- Pivot Hole Diameter: 10mm
- Adjusting Hole: M8×1.25
- Pulley Outside Diameter: 70mm
- Pulley Section: A
- Condition: New (not remanufactured)
- Weight: 3.4 kg
- Warranty: 1 year
- Unit of Measure: Each
Compatible With / Goes Well With
- Vehicles originally fitted with Denso-style 12V alternators matching the above mounting and electrical specifications
- Applications requiring IR74 pin code internal regulator alternators
- Standard Section A V-belt drive systems with 70mm pulley compatibility
- Twin-leg bracket mounting configurations with 172mm centre-to-centre spacing and 75mm inside leg spread
Important: Compatibility must be verified against your specific vehicle make, model, engine, and build date before purchase. Cross-reference the pin code (IR74), mount dimensions (172mm C-C, 75mm inside legs), pivot hole (10mm), and adjusting hole (M8×1.25) against your original unit or vehicle workshop manual. If unsure, consult a qualified auto electrician before ordering.
Weight
3.4 kg.
Frequently Asked Questions
Is this a new alternator or a remanufactured unit?
The DXA4005 is a brand new alternator — not remanufactured. It ships with all new internal components including windings, brushes, and bearings, with no previously used parts.
How do I confirm this alternator will fit my vehicle?
Cross-reference the pin code (IR74), mount centre-to-centre (172mm), inside mounting leg spread (75mm), pivot hole diameter (10mm), adjusting hole thread (M8×1.25), and pulley OD (70mm) against your original unit or vehicle workshop manual. When in doubt, consult a qualified auto electrician.
Does this alternator require an external voltage regulator?
No — the DXA4005 features an internal voltage regulator, meaning no separate external regulator is required. The regulation circuit is self-contained within the alternator body.
What belt type does the 70mm Section A pulley suit?
The Section A pulley is designed for standard A-profile V-belts, which are the most common belt type found on vehicles running Denso-style alternators. In most compatible applications, the existing drive belt can be reused.
What warranty does this alternator carry?
The OEX DXA4005 is backed by a one-year OEX warranty. Retain your proof of purchase and ensure installation is carried out correctly, as warranty claims relating to incorrect fitment or installation may not be covered.
Legendary Products & Support From Authorized Dealers
When you choose OEX, you're choosing quality and performance. But just as important as what you buy is where you buy it from. Here's why purchasing from an authorized dealer is always the right choice:
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▸ Expert Knowledge & Training
Only authorized OEX dealers are factory-trained to sell and install our products. They have the expertise to ensure your purchase is set up correctly and meets your expectations.
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▸ Authorized Warranty Protection:
We offer one of the best warranties in the industry, but only purchases made through authorized dealers are covered. Don't be misled by unauthorized sellers who can't provide genuine warranty support.
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▸ Reliable Customer Support:
If you ever run into an issue, you're backed by OEX's official manufacturer's warranty. No need to deal with overseas returns—our local team takes care of everything quickly and efficiently.
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▸ Protect Your Investment:
Buying from an authorized dealer ensures you're getting genuine products, full warranty coverage, and expert support. Ask yourself—is saving a few dollars worth losing all that?
Choose wisely. Buy from Frankies BrandBeast today!
