Without dual rear wheels. Sterling axle. Single rear wheels. F250 super duty. 6.7l. 10.50 axle. F350 super duty. 6.7l. 10.50 axle. F250 super duty. 7.3l. 10.50 axle. F350 super duty. 7.3l. 10.50 axle. F250 super duty. 6.8l. 10.50 axle. F350 super duty. 6.8l. 10.50 axle.

Differential Pinion Seal – Ford (RC3Z-4676-A) is a Genuine OEM sealing component manufactured by Ford, engineered to provide a dependable, leak-free barrier around the pinion shaft in the rear differential of compatible Ford vehicles. This precision-designed seal helps maintain proper differential performance by preventing gear oil from escaping and keeping contaminants like dirt and water out — both of which are critical to long-term drivetrain reliability and smooth operation of the differential gears.

Manufactured from high-grade, heat- and oil-resistant elastomeric materials with reinforced sealing lips, this OEM pinion seal is built to withstand the demanding environment found at the rear differential — including high rotational speeds, constant exposure to lubricants, heat, and vibration. Ford’s factory-specified material formulation and dimensional accuracy ensure superior resistance to hardening, cracking, or deformation over time, which are common failure modes in many aftermarket alternatives.

Compatibility is specific to select Ford differentials and drivetrain configurations, where the Differential Pinion Seal – Ford (RC3Z-4676-A) serves as a direct replacement for the original factory-installed seal. Its precision inner diameter and sealing lip geometry allow for a proper interference fit around the pinion yoke or shaft, maintaining optimal oil retention while minimizing friction and wear. The direct-fit design simplifies installation and ensures reliable sealing without trimming, fillers, or modification.

For professional technicians, this OEM pinion seal supports efficient differential service and rebuilds with predictable sealing performance, helping reduce the likelihood of return visits due to leaks. DIY mechanics with experience in drivetrain maintenance will appreciate the part’s exact fit, factory-matched materials, and the confidence that comes from using a Ford-engineered component designed for long-term durability.

• Genuine Ford OEM differential pinion seal built to factory specifications

• High-grade, oil- and heat-resistant elastomer construction

• Direct-fit replacement for select Ford rear differentials

• Helps prevent gear oil leaks and contamination ingress

• Precision sealing lips for improved long-term reliability

• Ideal for professional technicians and experienced DIY users

Choosing the Differential Pinion Seal – Ford (RC3Z-4676-A) helps maintain proper lubrication retention, protect your differential gears, and ensure peace of mind knowing your drivetrain is sealed with an authentic OEM component engineered for precision, durability, and long-term performance.

Without dual rear wheels. Sterling axle. Single rear wheels. F250 super duty. 6.7l. 10.50 axle. F350 super duty. 6.7l. 10.50 axle. F250 super duty. 7.3l. 10.50 axle. F350 super duty. 7.3l. 10.50 axle. F250 super duty. 6.8l. 10.50 axle. F350 super duty. 6.8l. 10.50 axle.

Differential Pinion Seal – Ford (RC3Z-4676-A) is a Genuine OEM sealing component manufactured by Ford, engineered to provide a dependable, leak-free barrier around the pinion shaft in the rear differential of compatible Ford vehicles. This precision-designed seal helps maintain proper differential performance by preventing gear oil from escaping and keeping contaminants like dirt and water out — both of which are critical to long-term drivetrain reliability and smooth operation of the differential gears.

Manufactured from high-grade, heat- and oil-resistant elastomeric materials with reinforced sealing lips, this OEM pinion seal is built to withstand the demanding environment found at the rear differential — including high rotational speeds, constant exposure to lubricants, heat, and vibration. Ford’s factory-specified material formulation and dimensional accuracy ensure superior resistance to hardening, cracking, or deformation over time, which are common failure modes in many aftermarket alternatives.

Compatibility is specific to select Ford differentials and drivetrain configurations, where the Differential Pinion Seal – Ford (RC3Z-4676-A) serves as a direct replacement for the original factory-installed seal. Its precision inner diameter and sealing lip geometry allow for a proper interference fit around the pinion yoke or shaft, maintaining optimal oil retention while minimizing friction and wear. The direct-fit design simplifies installation and ensures reliable sealing without trimming, fillers, or modification.

For professional technicians, this OEM pinion seal supports efficient differential service and rebuilds with predictable sealing performance, helping reduce the likelihood of return visits due to leaks. DIY mechanics with experience in drivetrain maintenance will appreciate the part’s exact fit, factory-matched materials, and the confidence that comes from using a Ford-engineered component designed for long-term durability.

• Genuine Ford OEM differential pinion seal built to factory specifications

• High-grade, oil- and heat-resistant elastomer construction

• Direct-fit replacement for select Ford rear differentials

• Helps prevent gear oil leaks and contamination ingress

• Precision sealing lips for improved long-term reliability

• Ideal for professional technicians and experienced DIY users

Choosing the Differential Pinion Seal – Ford (RC3Z-4676-A) helps maintain proper lubrication retention, protect your differential gears, and ensure peace of mind knowing your drivetrain is sealed with an authentic OEM component engineered for precision, durability, and long-term performance.