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  3. NATIONAL SX-VG12

NATIONAL SX-VG12 Front Transmission Countershaft Race Xw

fits model: 2500, Sierra. make: Gmc. year: 2007.

Sx-vg12 National Front Transmission Countershaft Race For 2007 Gmc Sierra 2500 Hd Xw

( Brand: National ), ( Manufacturer Part Number: SX-VG12 ), ( Type: Manual Transmission Countershaft Race ), ( Manufacturer Warranty: 1 Year ), ( Ipn: C252 12-8 ), ( Item Length: 3.190 ), ( Placement On Vehicle: Transmission Manual Transmission ), ( Compatible Model: Sierra 2500 Hd Classic ), ( Core Charge: Free No Core Charge ), ( Position: Front ), ( Fitment Type: Direct Replacement ), ( Bundle Description: 1 Pc Genuine National Manual Transmission Countershaft Race )

Review NATIONAL Front Transmission Countershaft Race For Gmc Hd Xw fits SIERRA 2500 2007

Introducing the National SX-VG12 Front Transmission Countershaft Race for the 2007 GMC Sierra 2500 XW, a high-performance upgrade for your heavy-duty truck's automatic transmission. This countershaft race is meticulously engineered to provide exceptional strength and durability, ensuring reliable and consistent power transfer from the engine to the transmission.

The National SX-VG12 Countershaft Race is manufactured using premium, heat-treated steel. This material is chosen for its superior strength and ability to withstand the extreme temperatures and heavy loads encountered in heavy-duty applications. The raceway surface is precision-machined to ensure a perfect fit and alignment with the countershaft, minimizing friction and wear.

This countershaft race is designed specifically for the 2007 GMC Sierra 2500 XW's front transmission, making it a direct replacement for the original part. Its installation is straightforward and can be completed in a relatively short time by a skilled mechanic or an experienced DIY enthusiast. By upgrading to this high-performance countershaft race, you can expect improved shift quality, smoother operation, and extended transmission life.

The National SX-VG12 Front Transmission Countershaft Race is backed by a comprehensive warranty that covers defects in materials and workmanship. This warranty provides peace of mind and assures customers that they are investing in a top-quality product that will perform reliably under even the most demanding conditions.

Upgrading your 2007 GMC Sierra 2500 XW's front transmission with a National SX-VG12 Countershaft Race is an excellent investment in the longevity and performance of your heavy-duty truck. By improving the strength and durability of this critical component, you can enjoy a more enjoyable driving experience, increased towing capacity, and long-lasting reliability.

Buying a national SX-VG12 front transmission countershaft race for a 2007 GMC Sierra 2500 XW can be a consideration for those experiencing issues with their vehicle's transmission. Here are some potential pros and cons to help make an informed decision:

Pros:

1. Improved Transmission Performance: A worn-out countershaft race can lead to transmission slippage, rough shifting, and other performance issues. Replacing it with a new one can help improve overall transmission performance.

2. Long-Term Savings: By replacing the countershaft race instead of the entire transmission, you may save money in the long run, as a new transmission can be quite expensive.

3. DIY Friendly: If you are mechanically inclined, replacing the countershaft race can be a rewarding DIY project, and you can save labor costs.

Cons:

1. Potential for Other Issues: Replacing the countershaft race does not guarantee that other transmission issues will not arise in the future. Transmission problems can be complex and multifaceted.

2. Part Availability and Cost: While the national SX-VG12 front transmission countershaft race is available, it may not be the most cost-effective option, and availability may vary depending on your location and the specific model year of your Sierra.

3. Installation Complexity: Installing the countershaft race requires removing the transmission pan, clutch assembly, and other components, which can be a time-consuming and complex process.

Ending Conclusion:

Replacing the countershaft race in a 2007 GMC Sierra 2500 XW can be a viable option for those experiencing transmission issues, especially if you are mechanically inclined and willing to invest the time and resources required for the installation. However, it's essential to consider the potential costs, availability, and complexity of the project, as well as the possibility of other transmission issues arising in the future. Ultimately, the decision to replace the countershaft race should be based on a thorough evaluation of your vehicle's specific situation and your personal preferences and resources.

Recommendation:

If you're considering replacing the countershaft race in your 2007 GMC Sierra 2500 XW, it's recommended that you consult with a professional mechanic to assess the condition of your transmission and determine if replacing the countershaft race is the most cost-effective and practical solution for your particular situation. Additionally, researching part availability, pricing, and installation instructions thoroughly can help you make an informed decision and prepare for the project.

Details:

National Front Transmission Countershaft Race for 2007 GMC Sierra 2500 HD xw: Status: In Stock.

part #: sxvg12 price

  • $14.23

specifications manutransmission:

  • for models: 2500, Sierra
  • for makes: Gmc
  • for years: 2007
  • brand: National
  • mpn: Sx-vg12
  • type: Manual Transmission Countershaft Race
  • manufacturer warranty: 1 Year
  • ipn: C252 12-8
  • item length: 3.190
  • placement on vehicle: Transmission Manual Transmission
  • compatible model: Sierra 2500 Hd Classic
  • core charge: Free No Core Charge
  • position: Front
  • fitment type: Direct Replacement
  • bundle description: 1 Pc Genuine National Manual Transmission Countershaft Race

returns manutransmission:

  • time: 30 Days
  • policy: Returns Accepted
  • paid by: Seller

seller manutransmission:

  • # reviews: 564108
  • city: Indianapolis, Indiana
  • rating: 98.7%

offer manutransmission:

  • availability: In Stock
  • started: August 31, 2025
  • sold: 0
  • options: Ship-to-home
  • quantity: 7

general manutransmission:

  • Car Truck Parts Accessories > Transmission Drivetrain > Manual Transmission Parts
  • condition: New

payments manutransmission:

  • wallet: Apple-pay
  • other
  • credit card: Diners-club

shipping manutransmission:

  • class: Standard, Expedited
  • service: Standard, Expedited
  • type: Fixed
  • transit: 4-8 Days
  • cost: $0.00
for models: 2500, sierra, for makes: gmc, for years: 2007, type: manual transmission countershaft race, manufacturer warranty: 1 year, item length: 3.190, placement on vehicle: transmission manual transmission, compatible model: sierra 2500 hd classic, core charge: free no core charge, position: front, fitment type: direct replacement, bundle description: 1 pc genuine national manual transmission countershaft race,
category: auto parts > car truck parts accessories > transmission drivetrain > manual transmission parts, sku: 7787823492975792,

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