OEX AXA970 Alternator 12V 135A Autolite Style

A brand new high-output Autolite-style alternator with clutch pulley technology and a 3-year passenger vehicle warranty.

Product Overview

The OEX AXA970 is a brand new 12V, 135A alternator designed as a direct-style replacement for Autolite-unit applications, cross-referencing OEM number 3L74-10300-AA. Delivering a robust 135A output, it is well suited to passenger vehicles and light commercial applications carrying elevated electrical loads from accessories such as dual battery systems, driving lights, inverters, and aftermarket audio equipment.

Featuring a 6-groove overrunning clutch pulley, internal voltage regulator, single leg mount, and IR81 pin code, the AXA970 is engineered to replicate the mounting geometry and electrical interface of the original Autolite-style unit. Key dimensions include a 60mm pulley OD, 10mm pivot and adjusting holes, 26mm mount leg thickness, and a 110mm mount centre-to-centre distance. This is a new unit — not remanufactured — backed by a 3-year warranty for passenger vehicle applications and 1 year for commercial use.

Key Specifications

• 12V system voltage
• 135A output rating — high-output for accessory-loaded passenger and light commercial vehicles
• Autolite-style replacement unit
• OEM cross-reference number: 3L74-10300-AA
• Internal voltage regulator (no external regulator required)
• Single leg alternator mount configuration
• Mount centre-to-centre distance: 110mm
• Mount leg thickness: 26mm
• Pivot hole diameter: 10mm
• Adjusting hole diameter: 10mm
• Pulley type: Overrunning clutch pulley
• Pulley outside diameter: 60mm
• Pulley section: 6-groove (poly-V / serpentine belt profile)
• Pin code: IR81
• Brand new unit — not remanufactured
• Weight: 6.72 kg
• Warranty: 3 years (passenger vehicle) / 1 year (commercial)

Features & Benefits

• 135A high-output rating — Provides substantial charging capacity above a standard OEM alternator, making this unit well suited to vehicles fitted with dual battery systems, high-draw lighting, winches, inverters, or performance audio that would otherwise strain a lower-output unit.
• Overrunning clutch pulley — Unlike a standard fixed pulley, the clutch pulley decouples the alternator rotor during engine deceleration, reducing belt wear, vibration, and noise. It also protects the alternator's internal components from shock loads generated by engine pulse — a key reason modern vehicles use this design.
• 6-groove poly-V pulley — Compatible with multi-ribbed serpentine belt systems common on modern passenger and light commercial vehicles fitted with Autolite-style alternators, allowing direct belt reuse in most compatible applications.
• OEM cross-reference: 3L74-10300-AA — Confirmed OEM number aids in accurate fitment verification against workshop manuals and parts databases, reducing ordering errors and return rates.
• Internal voltage regulator — Fully self-contained regulation requires no external regulator wiring or components, simplifying installation and reducing potential failure points in the charging circuit.
• Brand new unit — not remanufactured — Ships with all-new internals including windings, brushes, bearings, and clutch pulley assembly. Full warranty period begins from installation day one.
• 3-year passenger vehicle warranty — Provides genuine long-term coverage for passenger applications, with a 1-year warranty applicable to commercial use. One of the stronger warranty commitments in the OEX alternator range.
• Single leg mount with 110mm centre-to-centre — Compact mounting geometry suited to the tighter engine bay configurations common in passenger vehicles running Autolite-style alternators.

Technical Specs

• Part Number: AXA970
• Brand: OEX
• Type: Alternator
• Suits Unit Make: Autolite
• OEM Number: 3L74-10300-AA
• Voltage: 12V
• Power Rating: 135A
• Regulator Type: Internal
• Pin Code: IR81
• Mount Type: Single Leg
• Mount Centre-to-Centre: 110mm
• Mount Leg Thickness: 26mm
• Pivot Hole Diameter: 10mm
• Adjusting Hole Diameter: 10mm
• Pulley Type: Overrunning Clutch Pulley
• Pulley Outside Diameter: 60mm
• Pulley Section: 6-Groove
• Condition: New (not remanufactured)
• Weight: 6.72 kg
• Warranty: 3 years (passenger) / 1 year (commercial)
• Unit of Measure: Each

Compatible With / Goes Well With

• Vehicles originally fitted with Autolite-style 12V alternators matching the above mounting and electrical specifications
• OEM cross-reference applications for part number 3L74-10300-AA
• Applications requiring IR81 pin code internal regulator alternators
• 6-groove poly-V / serpentine belt drive systems with 60mm pulley compatibility
• Single leg bracket mounting configurations with 110mm centre-to-centre spacing and 26mm leg thickness
• Vehicles with elevated auxiliary electrical loads — dual battery, inverter, driving lights, or audio systems where a high-output alternator is beneficial

Important: Compatibility must be verified against your specific vehicle make, model, engine, and build date before purchase. Cross-reference the OEM number (3L74-10300-AA), pin code (IR81), mount dimensions (110mm C-C, 26mm leg thickness), pivot and adjusting holes (10mm), and pulley spec (60mm OD, 6-groove clutch) against your original unit or vehicle workshop manual. Consult a qualified auto electrician if you are unsure.

Weight

6.72 kg.

Frequently Asked Questions

Is this a new alternator or a remanufactured unit?

The AXA970 is a brand new alternator — not remanufactured. It ships with all-new internal components including windings, brushes, bearings, and clutch pulley assembly, backed by a 3-year passenger vehicle or 1-year commercial warranty.

What is an overrunning clutch pulley and why does it matter?

An overrunning clutch pulley allows the alternator rotor to freewheel during engine deceleration, absorbing drivetrain shock loads and reducing vibration and belt wear. It also protects the alternator's internal components compared to a solid fixed pulley.

How do I confirm this alternator will fit my vehicle?

Start with the OEM cross-reference number 3L74-10300-AA, then verify the pin code (IR81), mount centre-to-centre (110mm), leg thickness (26mm), pivot and adjusting holes (10mm), and pulley spec (60mm OD, 6-groove clutch) against your original unit or workshop manual. A qualified auto electrician can assist if needed.

What is the warranty difference between passenger and commercial use?

The AXA970 carries a 3-year warranty for passenger vehicle applications and a 1-year warranty for commercial use. Retain proof of purchase and ensure the unit is correctly installed, as improper fitment may affect warranty eligibility.

Does this alternator require an external voltage regulator?

No — the AXA970 features an internal voltage regulator, so no separate external regulator is needed. The regulation circuit is fully self-contained within the alternator body.