SCITOO Alternator 12V 110A for Hyundai Sonata 2010-2013 / Kia Optima 2011-2013 - CW 6-Groove Pulley, Direct Fit

The SCITOO alternator 37300-2G150 is a direct-fit, high-output 12V 110Amp replacement built to restore charging performance for 2.4L Hyundai Sonata (2010–2013) and Kia Optima (2011–2013) models.

If your vehicle is showing battery warnings, dim headlights, or inconsistent electrical behavior, swapping in a properly matched alternator is the fastest way to regain reliable charging. This SCITOO unit matches the original equipment reference number 11491 37300-2G150 and is engineered for the same clock‑wise rotation, internal regulator, internal fan, and 6‑groove pulley needed by the listed 2.4L engines.

How does this alternator match my vehicle’s specifications?

This alternator is built to OEM fitment and electrical specifications so it integrates with the existing charging system without modification.

• Voltage: 12V and rated output: 110 amps for typical modern accessory loads.
• Rotation: clockwise (CW) to align with factory belt routing and pulleys.
• Design features: internal regulator (IR) and internal fan (IF) to match OE cooling and control.
• Mounting and pulley: 6‑groove pulley and pre-measured mounting points for direct replacement.

What quality checks and build details should I expect?

SCITOO alternators are manufactured with precision castings and undergo bearing and cycling tests to ensure durability and stable output under load.

• CNC-machined castings for consistent alignment and fit.
• Bearings tested to OE-style standards and accelerated cycling validation.
• Fully assembled with internal components (regulator and fan) to simplify installation.
• Packaged as a new, high-output unit rather than rebuilt, reducing early-failure risk.

How difficult is installation and what should I prepare?

Installation is designed to be straightforward for anyone comfortable working under the hood, and it reuses your vehicle’s existing wiring and belt setup.

• Start by disconnecting the negative battery terminal to prevent shorts.
• Remove the old alternator, compare mounting points and pulley orientation, then install the SCITOO unit in the same position.
• Set the belt tension correctly: too loose reduces charging, too tight stresses bearings.
• Tighten all fasteners, reconnect the battery, and verify charging voltage with a multimeter (typically ~13.5–14.5V at idle).

Which vehicle models and part numbers does this replace?

This part is intended as a direct OE replacement for a range of Hyundai and Kia 2.4L models and corresponds to the listed reference numbers for easy cross-checking.

• Fitment: Hyundai Sonata 2.4L (2010–2013) and Kia Optima 2.4L (2011–2013).
• OEM/reference numbers: 11491 37300-2G150 and equivalents such as TG11C087, 208-940, 11066, 213-8539.
• Pulley: 6-groove to match factory serpentine belt systems.
• Rotation/regulator: CW with internal regulator and fan to match original equipment behavior.

Who is this for? If your Sonata or Optima shows electrical faults, repeated dead batteries, or dashboard charging alerts, this SCITOO alternator provides a cost-effective, direct-fit solution engineered to meet OE-style performance. It’s suited to DIY mechanics and professional installers who need a reliable new replacement with correct electrical ratings and mounting. SCITOO also offers technical support if you need help confirming fitment or troubleshooting post-installation behavior.