Alternator 31100R40A for Honda Accord 2008-2012 Acura TSX L4/2.4L 2009-2014 130A

Alternator for Honda Accord 2008-2012 Acura TSX 2009-2014

This 130A alternator, reference number 31100R40A, replaces the factory charging unit on 2008-2012 Honda Accord and 2009-2014 Acura TSX models with the 2.4L L4 engine.

Overview

This alternator is built for 2008-2012 Honda Accord and 2009-2014 Acura TSX models with the 2.4L L4 engine. It supplies 130 amps to keep the battery charged and the electrical system running under load. It is a direct-fit replacement for drivers dealing with a failed or weak factory alternator.

Built For Performance

• 130 amp output supports factory electrical loads and charging demand
• Direct-fit replacement for the original mounting points and pulley setup
• Internal voltage regulation matched to the 2.4L L4 charging system
• Built with copper windings and sealed bearings for long service life
• Tested to hold stable output across the RPM range
• OEM cross-reference 31100R40A for easy part verification

Fits These Machines

• for Honda Accord 2008-2012 with 2.4L L4 engine
• for Acura TSX 2009-2014 with 2.4L L4 engine

On-The-Job Use

• Replacing a failed alternator that no longer charges the battery
• Fixing dimming lights, weak accessories, or a battery warning light
• Restoring charging output after bearing noise or pulley failure
• Routine charging system repair on high-mileage Accords and TSX models

Specs At A Glance

Good To Know

Q: Should I disconnect the battery before installing this alternator? A: Yes, disconnect the negative battery terminal before removing the old alternator to protect the electrical system. Inspect the belt and tensioner while the alternator is out.

Q: Will this alternator fit both the Accord and TSX listed? A: It is listed for 2008-2012 Honda Accord and 2009-2014 Acura TSX with the 2.4L L4 engine, but trim and options can affect fitment, so confirm your engine and part number before ordering.

Slight variation in finish or dimensions may occur between production runs, and fit can depend on serial number, so confirm compatibility before ordering.