CADILLAC 12679112 Engine 3.6L 8TH

( Manufacturer Part Number: 12679112 ), ( Manufacturer Warranty: 6 Month ), ( Genuine Oem: Yes ), ( Seller Notes: 3.60l 57867 Miles ), ( Interchange Item Code: 300 ), ( Color: Black ), ( Compatibility: Ct6 18-20 3.6l, 8th Digit, Opt Lgx ), ( Number Of Valves: 24 ), ( Engine Size: 3.6l ), ( Fuel Type: Gas ), ( Type: Engine Complete Assembly )

Review CADILLAC Used Engine Complete Assembly Fits 3.6l Vins 8th Digit Opt fits CT6 2018

The Cadillac 12679112 engine is a sophisticated powertrain option for the 2018 CT6 model. This engine is a 3.6-liter V6 unit that belongs to the eighth generation of the OptiPower series. It is a proven performer, known for delivering an excellent balance of power, efficiency, and refinement.

The engine block is made of compacted graphite iron, which offers superior strength and durability. The cylinder heads are made of aluminum alloy, and each cylinder features a twin-scroll, low-friction variable valve timing system with continuously variable valve lift. This advanced valvetrain technology optimizes power and torque across the entire RPM range, ensuring responsive and effortless acceleration.

The engine also boasts direct fuel injection, which delivers fuel directly into the combustion chamber under high pressure. This results in more complete combustion, increased efficiency, and reduced emissions. The engine is mated to a smooth-shifting 8-speed automatic transmission, providing seamless power delivery and impressive fuel economy.

Additionally, the Cadillac 12679112 engine features Active Fuel Management (AFM) technology, which automatically deactivates cylinders under light load conditions to save fuel. This system is seamlessly integrated, allowing the engine to switch between V6 and V4 operation without any noticeable difference in performance or driveability.

The engine is also equipped with a number of advanced technologies designed to enhance performance and improve efficiency. These include an engine cooling system that uses a large, low-mounted radiator and a high-efficiency cooling fan, as well as an electric power steering system that reduces parasitic losses and improves fuel economy.

In summary, the Cadillac 12679112 engine is a technologically advanced powertrain option for the 2018 CT6 model. Its compacted graphite iron block and aluminum cylinder heads provide strength and durability, while its twin-scroll, low-friction variable valve timing system and direct fuel injection optimize power and efficiency. The engine's Active Fuel Management technology and advanced cooling system further enhance performance and efficiency, making it a standout choice for those seeking a powerful, refined, and efficient driving experience.

The Cadillac 12679112 engine, a 3.6L V6 unit, is an option for those looking to replace or upgrade the powertrain in their 2018 Cadillac CT6. As with any major automotive purchase, it is essential to consider the pros and cons before making a decision.

1. Power: The 3.6L V6 engine delivers a significant amount of power, making it an excellent choice for those who value performance. It produces 335 horsepower and 284 lb-ft of torque, providing a responsive and exhilarating driving experience.

2. Smooth operation: The engine is known for its smooth and refined operation. This is especially important for luxury vehicles like the Cadillac CT6, where a quiet and sophisticated powertrain is expected.

3. Durability: The 3.6L V6 engine is a proven design with a long history of reliability. It is built to withstand the rigors of daily driving, making it a solid choice for those who want a dependable powertrain.

1. Fuel efficiency: The engine is not particularly fuel-efficient. It is rated at 18 mpg in the city and 27 mpg on the highway. Those who prioritize fuel economy may want to consider other engine options or focus on driving habits to improve efficiency.

2. Maintenance costs: The 3.6L V6 engine requires regular maintenance to keep it running at its best. This includes oil changes, air filter replacements, and other routine service tasks. The cost of these services can add up over time.

3. Emissions: The engine produces a significant amount of emissions, which may be a concern for those who prioritize reducing their carbon footprint.

The Cadillac 12679112 engine offers a compelling combination of power, smooth operation, and durability. However, it comes with drawbacks such as lower fuel efficiency, higher maintenance costs, and greater emissions. Ultimately, the decision to purchase this engine depends on an individual's priorities and preferences. Those who value performance and power may find the benefits worth the trade-offs, while those who prioritize fuel economy or emissions reduction may want to explore other options.

If you are in the market for a new engine for your 2018 Cadillac CT6 and prioritize power and performance, the 3.6L V6 engine is a strong contender. However, it is essential to consider the potential costs, including fuel and maintenance expenses, and weigh them against the benefits. If fuel efficiency or emissions reduction is a priority, you may want to explore other engine options or focus on driving habits to improve efficiency. Ultimately, the decision depends on your unique needs and preferences.

Details:

Install new filter kit. Airbags are not tested to meet any safety standards. Adjust throttle position sensor cable. Replace oil, air and fuel filters.

This part fits vehicles made in the following years 2018 ,2019. Manufacturer Brand: Color: Position: Fitment Notes. The example companies, organizations, products, people and events depicted herein are fictitious. Menu: FREE RESIDENTIAL SHIPPING.

Install new belts and hoses. Warranty Information: Please review the listing for specific warranty details. Replace all seals. Scan, record and clear all codes before removing original unit.

Buyer accepts all risk of damages/injuries if not installed properly. Residential Address: Curbside delivery only. All other parts included are considered accessories or extra. A daytime phone number is required to schedule the delivery.

If needed, replace timing gears, chains or belts gaskets. Transmissions: are warrantied to be in good working order against any slippage or shifting failures. Replace oil pan gasket and rear main seal. Drain and replace engine oils to manufacture suggested levels.

Replace valve cover gaskets. Airbags must be installed in accordance with vehicle manufacturers specifications. Replace thermostat gasket. Differentials: All internal lubricated parts within the drive axle housing are guaranteed in good working condition at time of purchase.

Flush cooling system re-fill to proper level. And engage torque converter into front pump. Scan, record and clear all codes before removing the original unit. Any rights not expressly granted herein are reserved.

6 MONTH WARRANTY. Used tires are not tested or labeled by MAS to meet any safety standards. You are expected to check this page from time take notice of any changes we made, as they binding on you. Items marked Sold AS-IS are final sale with no warranty.

RECOMMENDED INSTALLATION/REPLACEMENT PROCEDURES ENGINES Install new spark plugs wires. Items will not be released without it. Fill transmission with manufacturer specified fluid.

Flush and inspect cooling lines. TRANSMISSIONS/TRANSFER CASES 1.

part #: 12679112 price

• $1535.00

specifications grokengines:

• for makes: Cadillac
• for years: 2018
• mpn: 12679112
• manufacturer warranty: 6 Month
• genuine oem: Yes
• seller notes: 3.60l 57867 Miles
• interchange item code: 300
• color: Black
• compatibility: Ct6 18-20 3.6l, 8th Digit, Opt Lgx
• number of valves: 24
• engine size: 3.6l
• fuel type: Gas
• type: Engine Complete Assembly

shipping grokengines:

• class: Freight
• service: Flat Rate Freight
• cost: $0.00
• type: Fixed

seller grokengines:

• # reviews: 24253
• rating: 98.1%
• city: Camden, New Jersey

offer grokengines:

• started: October 18, 2025
• options: Ship-to-home
• sold: 0
• quantity: 1
• availability: In Stock
• best offers: True

general grokengines:

• condition: Used
• Car Truck Parts Accessories > Engines Engine Parts > Engines

returns grokengines:

• time: 60 Days
• paid by: Buyer
• policy: Returns Accepted

payments grokengines:

• other
• wallet: Paypal
• credit card: Diners-club

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