SX-A39M NATIONAL Rear Inner Differential Pinion Race Dq C10

Review NATIONAL Rear Inner Differential Pinion Race For Chevrolet Dq for CHEVROLET C10 1960–1974

Introducing the National SX-A39M Rear Inner Differential Pinion Race for 1960-1974 Chevrolet C10 DQ trucks. This high-quality differential pinion race is an essential upgrade for any serious off-road or high-performance application.

The National SX-A39M pinion race is precision engineered from heat-treated steel for maximum strength and durability. It features a unique design with a hardened surface finish that provides superior load carrying capacity and resistance to wear and tear. This race is specifically designed to fit the rear differential of 1960-1974 Chevrolet C10 DQ trucks, making it an ideal replacement or upgrade for worn-out or failed factory races.

This pinion race is also designed for easy installation, with no special tools required. It comes with a comprehensive installation guide to ensure a hassle-free installation process. The race is also compatible with aftermarket ring and pinion sets, making it a versatile upgrade for a wide range of applications.

The National SX-A39M Rear Inner Differential Pinion Race is engineered to provide superior performance and reliability. It is designed to handle the increased loads and torque that come with off-road use or high-performance applications. The race is also designed to reduce noise and vibration, providing a smoother and quieter driving experience.

In summary, the National SX-A39M Rear Inner Differential Pinion Race is a must-have upgrade for any 1960-1974 Chevrolet C10 DQ truck that sees heavy off-road use or high-performance applications. Its precision engineering, superior strength, and easy installation make it an essential upgrade for any serious truck enthusiast. With the National SX-A39M pinion race, you can confidently take on the toughest terrain with the peace of mind that comes from knowing your differential is up to the challenge.

Buying a national SX-A39M rear inner differential pinion race for a 1960-1974 Chevrolet C10 with a Dana 44 differential can be a worthwhile investment for those seeking superior performance and durability. Below are some pros and cons to consider before making a purchase.

1. Enhanced durability: A high-quality pinion race can extend the life of the differential by reducing wear and tear on the pinion shaft and bearings.

2. Improved performance: A stronger pinion race can handle higher horsepower and torque, leading to better acceleration and overall performance.

3. Reduced noise and vibration: A well-designed pinion race can help eliminate unwanted noises and vibrations commonly associated with worn-out differentials.

1. Cost: Replacing the pinion race is not a cheap upgrade, especially when compared to other more affordable modifications.

2. Labor costs: Installing a new pinion race requires specialized tools and knowledge, adding to the overall cost of the project.

3. Potential compatibility issues: Ensure that the pinion race is specifically designed for your Dana 44 differential and year/model of the Chevrolet C10 to avoid potential issues.

The decision to buy a national SX-A39M rear inner differential pinion race for a 1960-1974 Chevrolet C10 ultimately depends on your personal goals, budget, and the condition of your existing differential. If you're planning on upgrading your C10 for increased performance and durability, a high-quality pinion race is a worthwhile investment. However, if you're working on a tight budget or simply maintaining the stock differential, this upgrade may not be necessary.

If you decide to proceed with purchasing a new pinion race for your Chevrolet C10, make sure to choose a reputable manufacturer and take the time to properly install it to ensure optimal performance and longevity. Additionally, consider researching other potential upgrades, such as improved differential fluid or upgraded bearings, to further enhance the performance and durability of your Dana 44 differential.

Details:

National rear inner differential pinion race for 1960-1974 Chevrolet C10 dq: status: in stock.

specifications differentialsdepo:

• for makes: Chevrolet
• for years: 1960–1974
• brand: National
• mpn: Sx-a39m
• placement on vehicle: Driveline Axles Bearings
• type: Differential Pinion Race
• item length: 3.250
• manufacturer warranty: 1 Year
• ipn: C735 67-8
• compatible model: C10 Pickup
• compatible year: 1974 1973 1972 1971 1970 1969 1968 1967 1966 1965 1964 1963 1962
• core charge: Free No Core Charge
• position: Rear Inner
• fitment type: Direct Replacement
• bundle description: 1 Pc Genuine National Differential Pinion Race

payments differentialsdepo:

• other
• credit card: diners-club
• wallet: paypal

shipping differentialsdepo:

• class: standard, expedited
• transit: 4-7 days
• service: standard, expedited
• type: fixed

offer differentialsdepo:

• options: ship-to-home
• prices: $20.59–$25.30
• item condition: New
• in stock #: 2
• availability: in stock
• started: february 14, 2026
• sold #: 9

general differentialsdepo:

• category: Auto Parts > Transmission Drivetrain > Differentials, Assemblies > Additional

seller differentialsdepo:

• rating: 99.5%
• city: indianapolis, indiana
• # reviews: 622632

returns differentialsdepo:

• paid by: seller
• time: 30 days
• policy: returns accepted