SKU:DXA4199
OEX Alternator 12V 150A Denso Style DXA4199
OEX Alternator 12V 150A Denso Style DXA4199
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Description
Description
OEX Alternator 12V 150A Denso Style – DXA4199
The OEX DXA4199 is a high-performance 12V, 150-amp alternator designed for Denso-style applications. Built for reliable operation and efficient battery charging, it is ideal for modern Lexus and Toyota vehicles with ECU-controlled voltage regulators (RLO terminal).
This alternator features a twin-leg mount, internal regulator, and 7-groove pulley for secure and consistent fitment. Please note: it is not compatible with vehicles using a standard voltage regulator.
Key Features
- High output 150A – supports vehicles with higher electrical demands
- Denso-style design – direct-fit replacement for compatible OE units
- Internal regulator (Pin Code IR116) – ECU-controlled voltage regulation (RLO terminal)
- Twin-leg mount – ensures secure installation
- Pulley Section: 7 Groove, 52.5mm outside diameter
- Brand new unit – not remanufactured
- 3-year passenger / 1-year commercial warranty
Specifications
- Voltage: 12V
- Output: 150 Amp
- Pulley Section: 7 Groove
- Pulley Outside Diameter: 52.5mm
- Adjusting Hole Diameter: M8 x 1.25 / 11
- Inside Mounting Legs: 36.5mm
- Pivot Hole Diameter: M10 x 1.25 / 11
- Pin Code: IR116
- Regulator Type: Internal (ECU controlled, RLO Terminal)
- Alternator Mount: Twin Leg
- Mount Centres: 176mm
- Unit Type: New
- Weight: 5.8kg
- Suits Unit Make: Denso
Vehicle Applications
Commonly fitted to:
- Lexus GS GRL11R 250 2.5L 4GR-FSE Petrol V6 Sedan RWD (01/2012 ON)
- Lexus GS GRS190R 300 3.0L 3GR-FSE Petrol V6 Sedan RWD (04/2005 – 11/2011)
- Lexus IS C GSE20 250 2.5L 4GR-FSE Petrol V6 Convertible RWD (04/2009 – 06/2015)
- Lexus IS GSE20 II 250 2.5L 4GR-FSE Petrol V6 Sedan RWD (08/2005 – 03/2013)
- Lexus IS GSE21 II 350 3.5L 2GR-FSE Petrol V6 Sedan RWD (01/2008 – 03/2013)
- Lexus IS GSE21R II 350 3.5L 2GR-FSE Petrol V6 Sedan RWD (08/2005 – 03/2013)
- Lexus IS GSE30R III 250 2.5L 4GR-FSE Petrol V6 Sedan RWD (04/2013 – 08/2015)
- Lexus IS GSE35R III 250 2.5L 4GR-FSE Petrol V6 Sedan AWD (05/2013 ON)
- Toyota Mark X GRX120 I VVTi 2.5L 4GR-FSE Petrol V6 Sedan RWD (11/2004 – 09/2009)
Always confirm compatibility with your vehicle’s OE number, part number, or ECU type before installation.
Performance & Reliability
The DXA4199 alternator is engineered for consistent high output, precise voltage regulation, and long service life. Its ECU-controlled regulator ensures accurate charging, protecting your vehicle’s electrical system and battery.
Why Choose OEX?
- Trusted aftermarket brand for Lexus and Toyota vehicles
- Direct-fit Denso-style replacement for OE performance
- Designed for durability and extended service life
- Backed by comprehensive warranty coverage
Shipping
Shipping
Every order at TINKR promises fast shipping to your door, anywhere in New Zealand. Within 1-3 business days. Courier pickups Monday - Friday. Excluding public holidays.
Our standard delivery requires a signature upon receipt, however type any delivery instructions in the box provided during the TINKR check out on how you want your order delivered. For example, No signature required or leave on front porch etc.
How fast is Tinkr's Shipping?
How fast is Tinkr's Shipping?
While it is possible for many Auckland orders to be delivered the same day, delivery estimates are; North Island - Overnight. South Island and Rural - extra 1-2 days

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OEX Alternator 12V 150A Denso Style DXA4199