20821397 Genuine GM Alternator For Cadillac CTS 3.0L 3.6L 6.2L

Name: 20821397 Genuine GM Alternator For Cadillac CTS 3.0L 3.6L 6.2L
Brand: GM
Price: 545.00 USD
Availability: InStock

P/N: 20821397 Manufactured by: GM

$545.00 - $545.00

$545.00

$545.00 - $545.00

$545.00

5 in Stock

Condition: New

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Description

The 20821397 alternator is a GM factory charging unit designed for Cadillac CTS models equipped with 3.0L, 3.6L, and 6.2L engines. It delivers consistent electrical output to maintain battery charge and support proper function of the vehicle’s electrical systems.

Vehicle Compatibility

Year	Vehicle	Engine	Trims
2014	Cadillac CTS	3.0L V6 Gas, 3.6L V6 Flex/Gas, 6.2L V8 Gas	Base, Luxury, Performance, Premium, V, Vsport, Vsport Premium
2013	Cadillac CTS	3.0L V6 Gas, 3.6L V6 Flex, 6.2L V8 Gas	Base, Luxury, Performance, Premium, V
2012	Cadillac CTS	3.0L V6 Gas, 3.6L V6 Gas, 6.2L V8 Gas	Base, Luxury, Performance, Premium, V
2011	Cadillac CTS	3.0L V6 Gas, 3.6L V6 Gas, 6.2L V8 Gas	Base, Luxury, Performance, Premium, V
2010	Cadillac CTS	3.0L V6 Gas, 3.6L V6 Gas	Base, Luxury, Performance, Premium

General Specifications

Condition	New
Part Number	20821397
Brand	GM
Part Type	Alternator
Years	2010–2014
Fitment Type	Direct replacement
Weight	13.60 lb
Dimensions	14.9 x 13.6 x 10.5 inches

Product Features

The 20821397 alternator is built to match factory performance and installation requirements:

Designed for Cadillac CTS charging system applications
Provides stable electrical output for battery and system operation
Supports factory-installed electronics and electrical loads
Compatible with 3.0L, 3.6L, and 6.2L engine configurations
Matches original mounting points and electrical connectors
Built to GM standards for proper fit and reliable function

Application Notes

The 20821397 alternator is intended for Cadillac CTS models equipped with the factory charging system and engine configurations listed above. Proper installation ensures correct electrical performance.

Always verify part number, engine size, and VIN before installation to ensure correct fitment.