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STATE AUTO PARTS

Your trusted partner for premium quality pre-owned engines and transmissions. Leveraging our network of 5,000+ certified suppliers across the nation, we deliver thoroughly tested components backed by a comprehensive 2-year warranty.

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  • 21151 S. Western Ave, Torrance, CA 90501
  • (800) 241-8053
  • support@stateautoparts.com
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FIND YOUR PART
Speak With a Specialist Now(800) 241-8053
Free ShippingTo commercial addresses nationwide
2-Year WarrantyComprehensive coverage included
Expert SupportCertified VIN fitment specialists
Quality InspectedPressure & compression tested

Cadillac Ct6 ENGINES & TRANSMISSIONS

Used & Remanufactured OEM Powertrains · Tested with Warranty & Free Commercial Shipping

Select Year to Refine Results
All Years20262025202420232022202120202019201820172016201520142013201220112010200920082007200620052004200320022001200019991998
Used Tested2020 CADILLAC CT6 3.6L (VIN S, 8th digit, opt LGX) Used Engine

2020 CADILLAC CT6 3.6L (VIN S, 8th digit, opt LGX) Used Engine

Option: 3.6L (VIN S, 8th digit, opt LGX)

Warranty:2-Year Included
Mileage:47k - 54k
Shipping:Free Commercial
Ships In:24–48 Hours
$2,848– $3,133
VIEW DETAILS
Used Tested2019 CADILLAC CT6 3.6L (VIN S, 8th digit, opt LGX) Used Engine

2019 CADILLAC CT6 3.6L (VIN S, 8th digit, opt LGX) Used Engine

Option: 3.6L (VIN S, 8th digit, opt LGX)

Warranty:2-Year Included
Mileage:42k - 49k
Shipping:Free Commercial
Ships In:24–48 Hours
$3,570– $3,927
VIEW DETAILS
Used Tested2019 CADILLAC CT6 4.2L (VIN J, 8th digit, opt LTA) Used Engine

2019 CADILLAC CT6 4.2L (VIN J, 8th digit, opt LTA) Used Engine

Option: 4.2L (VIN J, 8th digit, opt LTA)

Warranty:2-Year Included
Mileage:52k - 59k
Shipping:Free Commercial
Ships In:24–48 Hours
$17,787– $19,566
VIEW DETAILS
Used Tested2019 CADILLAC CT6 4.2L (VIN J, 8th digit, opt LTA) Used Engine

2019 CADILLAC CT6 4.2L (VIN J, 8th digit, opt LTA) Used Engine

Option: 4.2L (VIN J, 8th digit, opt LTA)

Warranty:2-Year Included
Mileage:32k - 37k
Shipping:Free Commercial
Ships In:24–48 Hours
$20,392– $22,431
VIEW DETAILS
Used Tested2019 CADILLAC CT6 3.6L (VIN S, 8th digit, opt LGX) Used Engine

2019 CADILLAC CT6 3.6L (VIN S, 8th digit, opt LGX) Used Engine

Option: 3.6L (VIN S, 8th digit, opt LGX)

Warranty:2-Year Included
Mileage:44k - 51k
Shipping:Free Commercial
Ships In:24–48 Hours
$3,419– $3,761
VIEW DETAILS
Used Tested2019 CADILLAC CT6 4.2L (VIN J, 8th digit, opt LTA) Used Engine

2019 CADILLAC CT6 4.2L (VIN J, 8th digit, opt LTA) Used Engine

Option: 4.2L (VIN J, 8th digit, opt LTA)

Warranty:2-Year Included
Mileage:40k - 45k
Shipping:Free Commercial
Ships In:24–48 Hours
$20,392– $22,431
VIEW DETAILS
Used Tested2019 CADILLAC CT6 4.2L (VIN J, 8th digit, opt LTA) Used Engine

2019 CADILLAC CT6 4.2L (VIN J, 8th digit, opt LTA) Used Engine

Option: 4.2L (VIN J, 8th digit, opt LTA)

Warranty:2-Year Included
Mileage:55k - 63k
Shipping:Free Commercial
Ships In:24–48 Hours
$17,220– $18,942
VIEW DETAILS
Used Tested2018 CADILLAC CT6 3.6L (VIN S, 8th digit, opt LGX) Used Engine

2018 CADILLAC CT6 3.6L (VIN S, 8th digit, opt LGX) Used Engine

Option: 3.6L (VIN S, 8th digit, opt LGX)

Warranty:2-Year Included
Mileage:43k - 50k
Shipping:Free Commercial
Ships In:24–48 Hours
$3,654– $4,019
VIEW DETAILS

Used & Remanufactured Cadillac Engines & Transmissions

State Auto Parts provides tested, reliable replacement engines and transmissions for your Cadillac. Save up to 70% off dealer retail pricing while securing a high-quality OEM part backed by warranty protection.

Comprehensive Quality Testing & Inspection

When purchasing a replacement motor or transmission for a Cadillac, quality and longevity are paramount. Our team verifies every inventory item to ensure clean oil channels, strong compression, and smooth gear transitions.

Key Benefits of Sourcing Cadillac Powertrains With Us

  • Factory OEM Fitment: Guaranteed exact match to original manufacturer specifications.
  • Documented Low Mileage: Accurate mileage reporting on every tested unit.
  • Hassle-Free Warranty: Comprehensive coverage for parts and peace of mind.
  • Direct Shipping: Quick delivery to commercial repair facilities or residential addresses.

Whether replacing a failed engine block or upgrading a transmission, our vehicle specialists are available to assist with VIN lookup and fitment confirmation.