High Output Alternator for Cadillac SRX (2010-2012) 3.0L/3.6L

$116.95

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Direct-Fit 150A Alternator for 2010-2012 Cadillac SRX (Theta)

What it Does: The 150-amp alternator delivers continuous, regulated 12-volt charging to the 2010-2012 Cadillac SRX to prevent voltage drop and maintain battery reserve across all vehicle subsystems.

The Stock Cadillac SRX Thermal Rectifier Breakdown

The tightly packed engine bay in the second-generation Theta platform Cadillac SRX subjects charging components to excessive radiant heat from the transverse exhaust routing. Over time, prolonged heat soak causes the stock internal rectifier diodes and solid-state voltage regulator to degrade. This thermal fatigue creates diode ripple, low-voltage diagnostic trouble codes (such as P0562), flickering interior illumination, and eventual total battery depletion under load on LF1 and LFX High Feature V6 platforms.

The Engineering Solution

This replacement alternator utilizes a high-efficiency die-cast aluminum housing engineered for maximum thermal dissipation and structural rigidity. Wound with heavy-gauge, high-temperature copper magnet wire, the stator and precision-balanced rotor generate a stable 150 amps at 12 volts. An upgraded internal regulator (IR) and heavy-duty internal fan (IF) actively lower operating temperatures across the diode bridge. The unit is fitted with a 6-groove serpentine pulley and factory-keyed 2-pin terminal to restore OE electrical integrity without harness modification.

What's Included

1 × Alternator 12V 150A (with 6-groove pulley installed)

Technical Specifications

Fitment	2010-2012 Cadillac SRX
Engine / Chassis	3.0L (LF1/LFW) & 3.6L (LFX) High Feature V6 / GM Theta Platform
Stock Output	265–308 hp / 223–265 lb-ft
Replaces OEM Part #	11453N, 13502585, 13586975, 13588312, 13597235, 201203202820, 208-242, 208-242A, 208-242B, 208-242C, 213-8379, 220921160357, 22962097, 400-40127, 430130133005, 431112093118, 90-22-5635, AVA0148, FG15S019, FG15S084, FG15S097, FG15S100, FGN15S097

Compatibility

2010-2011 Cadillac SRX 3.0L V6 (LF1 / LFW)
2012 Cadillac SRX 3.6L V6 (LFX)

Frequently Asked Questions & Fitment Warnings

Does this fit the Theta SRX?

Yes, this is a direct fit for the 2010-2012 Cadillac SRX equipped with the LF1 3.0L or LFX 3.6L V6 engine.

Does this unit require PCM recalibration after installation?

No PCM recalibration is needed, though disconnecting the battery ground and letting the battery management system reset during install is recommended.

The Cadillac Standard

Cadillac electrical architecture demands tight voltage regulation to keep complex infotainment, body control, and active stability networks running without signal noise or component fatigue.