GM Genuine Parts 12645298 Starter - OEM Replacement for GM Vehicles

In this review the GM Genuine Parts 12645298 Starter is evaluated as a direct OEM-style replacement for older GM vehicles. The bottom line: this starter is aimed at owners who want a factory-spec, newly manufactured unit that matches original fit and function, with the single biggest reason to buy being its adherence to GM OE specifications and testing for durability. For those looking for a plug-and-play restoration of starting performance, this starter delivers the expected compatibility and performance of an original equipment part.

Key Features

• Newly manufactured exact replacement: Built as a 100% newly manufactured unit to match the original starter so it installs and performs like the factory part.
• Tested components: Internal components are tested to meet original specification requirements for reliable durability under normal use.
• GM-recommended part: Sold as the GM-recommended replacement, ensuring the part is intended to restore factory starting performance.
• OE fit, form, and function: Manufactured to GM OE specifications for fit and mounting to reduce installation fitment issues.
• Durability focus: Produced to meet or exceed strict quality requirements so it should provide service life comparable to the original equipment.

Who It's For

The 12645298 starter is best for owners of compatible GM vehicles-examples include late 2000s to mid 2010s Buick, Cadillac, and Chevrolet models-who need a direct replacement that restores original starting performance without modification. It suits DIY mechanics and independent shops that prefer OEM-spec parts to maintain vehicle value and reliability.

It is less appropriate for buyers seeking a heavy-duty, high-performance aftermarket upgrade or an inexpensive temporary fix. Also, those prioritizing unusually long warranty-backed longevity beyond typical OEM expectations should compare extended-warranty aftermarket alternatives.

Pros & Cons

Pros

• Direct OEM replacement that fits GM mounting and electrical connections for straightforward installation in compatible models.
• Components are tested to original specifications, providing expected functionality and quality.
• Offers the reliability and parts compatibility associated with GM original equipment.

Cons

• Some users have reported mixed long-term durability, with isolated cases of early failure that suggest variability in service life.

Specifications

Our Verdict

The GM Genuine Parts 12645298 Starter is a sensible buy for owners who want a true OEM-style replacement that restores factory fit and starting performance. It represents good value for those prioritizing compatibility and original equipment manufacturing standards, though buyers should be aware that user reports show mixed long-term durability in a minority of cases.

Frequently Asked Questions

Will this starter fit my GM vehicle?
Fitment is vehicle-specific; it fits many Buick, Cadillac, and Chevrolet models from the late 2000s to mid 2010s listed by the manufacturer, so confirm against your year, make, model, and engine size.

Is this a new or remanufactured unit?
This is 100% newly manufactured as an exact replacement designed to match original equipment specifications.

How reliable is the starter?
Components are tested to meet original specifications for durability and performance, though some customers have reported occasional early failures, so results can vary.