High Output Alternator for Acura TL (2009-2014) 3.5L 3.7L

High-Output 250-Amp Alternator for 2009-2014 Acura TL (UA8 / UA9)

What it Does: The 250-Amp High Output Alternator replaces the factory charging unit on the 2009-2014 Acura TL to deliver stable supplemental amperage under heavy electrical loads and prevent system voltage drop.

The Stock Acura TL Charging Deficiencies

Factory Denso alternators on the UA8 and UA9 chassis are rated at roughly 130 amps, which leaves minimal headroom above the baseline draw of factory electronics, navigation, seat heaters, and multi-speaker audio. When technicians or owners install aftermarket audio amplifiers, air management compressors, or auxiliary lighting, the stock stator windings rapidly overheat under continuous duty cycles. This excessive thermal stress degrades the internal diode bridge, induces heavy voltage fluctuation, causes headlight dimming at idle, and starves the battery of critical recovery current.

The Engineering Solution

This direct-replacement unit features heavy-duty precision-wound hairpin stators and premium copper conductors engineered to deliver a consistent 250 amps without heat-induced output decay. Built with an oversized internal heat sink, heavy-duty rectifiers, and high-temp potted electronic regulators, this unit efficiently dissipates heat to sustain clean, ripple-free direct current. The precision CNC-machined rotor and housing bolt straight into factory accessory brackets without chassis modifications, maintaining exact serpentine belt alignment on both J35Z6 and J37A4 V6 platforms.

What's Included

• 1 x 250-Amp High Output Alternator

Technical Specifications

Compatibility

• 2009-2014 Acura TL Base 3.5L V6 (FWD)
• 2009-2014 Acura TL SH-AWD 3.7L V6 (AWD)

Frequently Asked Questions & Fitment Warnings

Does this fit the UA8 / UA9 TL?

Yes, this is a direct fit for the 2009-2014 Acura TL equipped with the J35Z6 3.5L or J37A4 3.7L engine.

Do I need to upgrade the primary charging wiring?

Yes, executing a 0-gauge or 4-gauge "Big Three" wiring upgrade from the alternator positive terminal to the battery and grounding points is strongly recommended to handle 250 amps safely.

The Acura Caliber

Engineered to match the high-revving demands of the J-series platform, this unit delivers uninterrupted electrical stability to ensure your performance electronics run without parasitic voltage loss.