4-2-689 Driveshaft Flange Yoke 1550 Series with 8x0.375" Holes 6.625" Male Pilot
Technical Data
The 4-2-689 Driveshaft Flange Yoke is a heavy-duty solution for 1550 series U-joints, designed to provide a secure, high-strength connection between your driveshaft and mating flange. Featuring 8 bolt holes (0.375" diameter) and a 6.625" male pilot, this flange yoke is engineered for the toughest driveline demands in commercial vehicles, heavy-duty trucks, and industrial setups. Built from forged steel and precision-machined, it ensures strength, durability, and reduced vibration under high torque conditions.
Upgrade your driveline with the 4-2-689 Flange Yoke — engineered for maximum strength, precision fitment, and long-lasting reliability in the most demanding environments.
Features and Benefits:
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Forged steel construction for maximum durability and torque resistance
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8 x 0.375" bolt holes with 6.625" male pilot for secure, stable fit
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Precision machining minimizes driveline vibration and wear
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Protective coating guards against rust, corrosion, and harsh conditions
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Heavy-duty performance ideal for towing, hauling, and commercial use
Technical Specifications:
| Specification | Value |
|---|---|
| Part Number (MPN) | 4-2-689 |
| Series | 1550 |
| Bolt Hole Diameter | 0.375 in (9.53 mm) |
| Hole Count | 8 |
| Male Pilot Diameter | 6.625 in (168.28 mm) |
| Construction | Forged Steel |
| Finish | Corrosion-Resistant Coating |
| Application | Heavy-Duty / Commercial Driveline |
What’s Included:
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1 x 4-2-689 Driveshaft Flange Yoke (1550 Series)
REVIEWS
Solid build quality. The flange yoke fit perfectly on my heavy-duty truck and handled high torque without any issues.
James D.
Dallas, TX
Excellent quality part. Easy to install and has been holding up well under tough hauling conditions.
Mark T.
Phoenix, AZ
Specifications
Fitment Data
• Engineered for precision compatibility with high-performance builds.
• Tested under extreme mechanical stress for guaranteed structural integrity.
Use the Riot Vehicle Finder to verify exact sub-model compatibility.
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