AMERICAN MOTORS 412-00637 Transfer 5.3L NR6

( Brand: American Motors ), ( Part Type: Transfer Motor Case ), ( Conditions Options: 5.3, A.t., 4wd ), ( Genuine Oem: Yes ), ( Ipn: 412-00637 ), ( Make: American ), ( Manufacturer Warranty: 90 Day )

Review AMERICAN MOTORS Transfer Case 5.3l Opt Nr6 Fits Hummer fits H3 2008

Introducing the American Powertrain 412-00637 Transfer Case Kit for the 5.3L Opti-Northern 08 Hummer H3. This top-tier transfer case upgrade is designed to provide you with improved performance and durability for your off-road adventures.

The 412-00637 Transfer Case Kit includes all the necessary components for a seamless installation process. It is specifically engineered for Hummer H3 vehicles equipped with the 5.3L Opti-Northern engine and model year 2008.

This kit features a heavy-duty transfer case, which is designed to handle the rigors of off-road driving. The case is made from high-strength steel and has been upgraded with stronger internal components, including an upgraded input and output shaft, larger bearings, and improved sealing.

A notable feature of this transfer case is its increased ground clearance, which is achieved by relocating the transfer case down and forward in the vehicle. This not only enhances the vehicle's off-road capability but also reduces the risk of damage to the transfer case during steep ascents and descents.

The 412-00637 Transfer Case Kit also includes a new wiring harness, which is designed to plug directly into the factory connector. This simplifies the installation process and eliminates the need for any additional wiring modifications.

Additionally, this kit includes a new transfer case mounting kit, which ensures a secure and stable installation of the transfer case in the vehicle. The mounting kit is made from high-strength steel and is designed to provide superior support to the transfer case.

This transfer case upgrade is a must-have for Hummer H3 owners who demand superior off-road performance and reliability. With its heavy-duty construction, improved ground clearance, and easy installation process, the American Powertrain 412-00637 Transfer Case Kit is the perfect choice for those who take their off-roading seriously.

In conclusion, the American Powertrain 412-00637 Transfer Case Kit is a top-tier upgrade for the 5.3L Opti-Northern 08 Hummer H3. It provides improved performance, durability, and ground clearance, making it an essential addition for anyone who wants to enhance their off-road capabilities.

The Hummer H3, specifically the 5.3L V8 Opti-Numeric Routine (ONR6) engine model with the transfer case number 08, is a powerful and capable off-road vehicle. Here are some pros and cons of buying this particular model:

1. Powerful Engine: The 5.3L V8 engine delivers impressive power and torque, making it a great choice for towing and off-road adventures.

2. Durable: Hummer vehicles are known for their durability, and the H3 is no exception. Its robust design makes it an ideal choice for those who require a reliable and tough vehicle.

3. Off-Road Capabilities: The Hummer H3 comes with standard four-wheel drive and a high ground clearance, making it a formidable off-road vehicle.

4. Resale Value: Hummer vehicles, especially those with unique features like the ONR6 engine, have a strong following and can retain their value well over time.

1. Fuel Economy: The Hummer H3, with its powerful engine, is not known for its fuel efficiency. Expect to pay more at the pump compared to other vehicles in its class.

2. Maintenance Costs: Due to its complex engine and off-road capabilities, the Hummer H3 can require more frequent and expensive maintenance than some other vehicles.

3. Size and Maneuverability: The Hummer H3 is a large and bulky vehicle, making it less maneuverable than smaller SUVs or crossovers.

4. Cost: The Hummer H3, especially with the ONR6 engine, can be quite expensive to purchase new or used.

The Hummer H3 with the 5.3L V8 ONR6 engine is an excellent choice for those who require a powerful, durable, and capable off-road vehicle. However, it comes with some drawbacks, including high fuel consumption, maintenance costs, and a large price tag. Ultimately, the decision to buy this vehicle depends on your specific needs and budget. If off-roading is a priority and you have the means to cover the costs, then the Hummer H3 could be an excellent investment. If not, you may want to consider other vehicles in its class that offer better fuel economy and lower maintenance costs.

Details:

specifications manutransmission:

• for models: H3
• for makes: Hummer
• for years: 2008
• brand: American Motors
• part type: Transfer Motor Case
• conditions options: 5.3, A.t., 4wd
• genuine oem: Yes
• ipn: 412-00637
• make: American
• manufacturer warranty: 90 Day

offer manutransmission:

• best offers: True
• options: Ship-to-home
• started: January 5, 2026
• availability: In Stock
• sold: 0
• quantity: 1

shipping manutransmission:

• cost: $200.00
• service: Flat Rate Freight
• class: Freight
• type: Fixed

returns manutransmission:

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

seller manutransmission:

• rating: 98.2%
• city: Petal, Mississippi
• # reviews: 308

payments manutransmission:

• credit card: Visa
• other
• wallet: Paypal

general manutransmission:

• Car Truck Parts Accessories > Transmission Drivetrain > Automatic Transmission Parts
• condition: Used

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