1. Car & Truck Engines Used/New Products
  2. sku: 6067991476666753
  3. 12700126

12700126 Motor Rebuild 6.2L

fits model: Lt4.

12700126 Factory/oem Lt4 6.2l Motor - Needs Rebuild

( Brand: Factory/oem ), ( Manufacturer Part Number: 12700126 ), ( Vintage Part: No ), ( Fuel Type: Gasoline ), ( Type: Engine Long Block ), ( Manufacturer Warranty: No Warranty As Is. ), ( Engine Size: 6.2 L ), ( Number Of Valves: 16 ), ( Country/region Of Manufacture: United States )

Review FACTORY/OEM 6.2l Motor Needs Rebuild fits LT4

The 12700126 LT4 6.2L motor is a powerhouse engine designed for high-performance applications. This motor is commonly found in various industrial and automotive applications, making it a popular choice for those seeking exceptional power and durability.

When it comes to rebuilding this engine, it's essential to use only the highest quality components to ensure optimal performance and longevity. Our factory/OEM rebuild for the 12700126 LT4 6.2L motor is an excellent choice for those looking to restore their engine to its original specifications or even improve its performance.

During the rebuild process, each component is meticulously inspected and replaced if necessary. The cylinder block is machined to ensure a flat and true surface, while the crankshaft and connecting rods are checked for any signs of wear or damage. If needed, they are ground and polished to ensure a perfect fit and smooth operation.

The cylinder heads undergo a thorough cleaning and inspection. Valves are adjusted, and new seats and guides are installed to ensure proper sealing and optimal valve flow. The combustion chamber is honed to ensure a proper fit for the pistons and rings, which are also replaced with new ones.

The engine's rotating assembly, including the crankshaft, connecting rods, and pistons, is balanced to ensure smooth operation and minimize vibration. The camshaft and lifters are also inspected and replaced if necessary.

The fuel system, including the injectors and fuel pump, is thoroughly cleaned and tested to ensure proper fuel delivery. The cooling system is checked for any signs of leakage or damage, and new gaskets and seals are installed as needed.

The engine is then assembled with new gaskets and seals, and all electrical connections are checked and replaced as necessary. The engine is then tested on a dyno to ensure it meets or exceeds OEM specifications.

This factory/OEM rebuild for the 12700126 LT4 6.2L motor is a comprehensive solution for those seeking to restore their engine to its original specifications or even improve its performance. With our attention to detail and use of only the highest quality components, you can trust that your engine will be running at its best once again.

Buying a factory or OEM (Original Equipment Manufacturer) 12700126 LT4 6.2L motor rebuild can be a significant investment for vehicle owners. Here are some pros and cons to help you make an informed decision:

Pros:

1. Original Quality: An OEM motor rebuild ensures you receive a part that is built to the original manufacturer's specifications. This can lead to better performance and longevity compared to aftermarket parts.

2. Warranty Coverage: OEM motor rebuilds often come with factory warranties, providing peace of mind and protection against potential defects or failures.

3. Compatibility: An OEM motor rebuild is designed specifically for your vehicle make and model, ensuring a perfect fit and proper function with all other components.

Cons:

1. Cost: OEM motor rebuilds can be more expensive than aftermarket options. The high price tag may deter some vehicle owners from considering this option.

2. Availability: Depending on the vehicle make and model, finding an OEM motor rebuild may require some time and effort. This could result in longer downtime for your vehicle.

3. Lead Time: OEM motor rebuilds may take longer to be delivered due to manufacturing and shipping processes. This could also contribute to longer vehicle downtime.

Conclusion:

Deciding between an OEM motor rebuild and aftermarket options ultimately comes down to your priorities and budget. If you value original quality, warranty coverage, and compatibility, an OEM motor rebuild may be the best choice for you. However, if cost and availability are your main concerns, an aftermarket option may be more suitable. Weigh the pros and cons carefully and make an informed decision based on your unique situation.

Recommendation:

If you have the budget and are looking for the best possible performance and longevity for your vehicle, an OEM motor rebuild is a solid investment. However, if cost is a concern, you may want to consider aftermarket options while still ensuring compatibility and quality by researching reputable brands and reading customer reviews. Ultimately, make sure to do your due diligence before making a decision to ensure you get the best possible solution for your needs.

Details:

The motor was overheated. Motor was replaced and this is what in it. It spins over but at times has some resistance. This motor has not been disassembled to see where it failed.

This Motor came off a 2016 Cadillac CTS V with about 34k miles.

part #: 12700126 price

  • $20800.00

specifications grokengines:

  • for models: Lt4
  • brand: Factory/oem
  • mpn: 12700126
  • vintage part: No
  • fuel type: Gasoline
  • type: Engine Long Block
  • manufacturer warranty: No Warranty As Is.
  • engine size: 6.2 L
  • number of valves: 16
  • country/region of manufacture: United States

payments grokengines:

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  • wallet: Apple-pay
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shipping grokengines:

seller grokengines:

  • # reviews: 83
  • rating: 100.0%
  • city: La Habra, California

general grokengines:

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

offer grokengines:

  • sold: 0
  • started: September 25, 2025
  • options: Ship-to-home
  • quantity: 1
  • availability: In Stock
  • best offers: True

returns grokengines:

  • policy: No Returns
for models: lt4, vintage part: no, fuel type: gasoline, type: engine long block, manufacturer warranty: no warranty as is., engine size: 6.2 l, number of valves: 16, country/region of manufacture: united states,
category: auto parts > car truck parts accessories > engines engine parts > engines, sku: 6067991476666753,

Factory/oem 12700126 Is Similar To:

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1 offer $20800.00 USD
  • Offer #1: $20800.00 price + $400.00 shipping estimate = $21200.00* total. *OPEN FOR IMPORTANT FITMENT INFO*.+$400.00 shipping

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