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Thumbnail Filmstrip of 2020-2023 6.6L L5P Duramax Street Series Rear Differential Cover Raw w/ Machined Fins AFE 46-71260A Images
Protecting your drivetrain’s longevity begins with managing the thermal stresses placed on your rear axle during heavy towing and high-performance driving. The aFe Street Series Rear Differential Cover (46-71260A) is engineered specifically for the AAM 11.5” and 12” (14-bolt) axles found on 2020-2023 Chevy Silverado and GMC Sierra 2500HD/3500HD models. By replacing the thin factory stamped-steel cover with this robust cast aluminum alternative, you are not just adding a component; you are implementing a comprehensive cooling and filtration system designed to stabilize gear oil temperatures and extend the life of your L5P Duramax’s rear end.
- Optimized Thermal Management: Cast aluminum construction features both internal and external cooling fins that significantly increase surface area, allowing heat to dissipate rapidly into the passing air.
- Enhanced Fluid Volume: An increased oil capacity over the stock configuration provides a larger thermal reservoir, ensuring the lubricant remains effective for longer durations under heavy loads.
- Advanced Contaminant Filtration: Equipped with a magnetic drain plug and a deep-reach magnetic fill plug, the system actively captures metallic debris to prevent abrasive wear on your gears and bearings.
- Precision Fluid Control: A built-in calibration plug is set to the factory oil level to eliminate the risk of overfilling, while a pre-installed oil level sight glass enables instant visual inspections of fluid clarity and volume.
- Raw Machined Aesthetics: The "Raw" finish with machined fins provides a rugged, industrial look that resists the harsh conditions beneath your vehicle.
- Reliability Assurance: Each cover is backed by a 2-year manufacturer warranty, ensuring peace of mind for the long haul.
This upgrade is a vital investment for any heavy-duty truck owner who prioritizes proactive maintenance and mechanical efficiency. By combining superior heat transfer properties with user-friendly features like the sight glass and magnetic protection, the aFe Street Series cover addresses the primary causes of differential failure—heat and contamination. Whether you are hauling a fifth-wheel trailer or navigating demanding terrain, this kit provides the structural integrity and cooling capacity required to keep your 14-bolt axle operating at peak performance.
Protecting your drivetrain’s longevity begins with managing the thermal stresses placed on your rear axle during heavy towing and high-performance driving. The aFe Street Series Rear Differential Cover (46-71260A) is engineered specifically for the AAM 11.5” and 12” (14-bolt) axles found on 2020-2023 Chevy Silverado and GMC Sierra 2500HD/3500HD models. By replacing the thin factory stamped-steel cover with this robust cast aluminum alternative, you are not just adding a component; you are implementing a comprehensive cooling and filtration system designed to stabilize gear oil temperatures and extend the life of your L5P Duramax’s rear end.
Optimized Thermal Management: Cast aluminum construction features both internal and external cooling fins that significantly increase surface area, allowing heat to dissipate rapidly into the passing air.
Enhanced Fluid Volume: An increased oil capacity over the stock configuration provides a larger thermal reservoir, ensuring the lubricant remains effective for longer durations under heavy loads.
Advanced Contaminant Filtration: Equipped with a magnetic drain plug and a deep-reach magnetic fill plug, the system actively[...]
Protecting your drivetrain’s longevity begins with managing the thermal stresses placed on your rear axle during heavy towing and high-performance driving. The aFe Street Series Rear Differential Cover (46-71260A) is engineered specifically for the AAM 11.5” and 12” (14-bolt) axles found on 2020-2023 Chevy Silverado and GMC Sierra 2500HD/3500HD models. By replacing the thin factory stamped-steel cover with this robust cast aluminum alternative, you are not just adding a component; you are implementing a comprehensive cooling and filtration system designed to stabilize gear oil temperatures and extend the life of your L5P Duramax’s rear end.
- Optimized Thermal Management: Cast aluminum construction features both internal and external cooling fins that significantly increase surface area, allowing heat to dissipate rapidly into the passing air.
- Enhanced Fluid Volume: An increased oil capacity over the stock configuration provides a larger thermal reservoir, ensuring the lubricant remains effective for longer durations under heavy loads.
- Advanced Contaminant Filtration: Equipped with a magnetic drain plug and a deep-reach magnetic fill plug, the system actively captures metallic debris to prevent abrasive wear on your gears and bearings.
- Precision Fluid Control: A built-in calibration plug is set to the factory oil level to eliminate the risk of overfilling, while a pre-installed oil level sight glass enables instant visual inspections of fluid clarity and volume.
- Raw Machined Aesthetics: The "Raw" finish with machined fins provides a rugged, industrial look that resists the harsh conditions beneath your vehicle.
- Reliability Assurance: Each cover is backed by a 2-year manufacturer warranty, ensuring peace of mind for the long haul.
This upgrade is a vital investment for any heavy-duty truck owner who prioritizes proactive maintenance and mechanical efficiency. By combining superior heat transfer properties with user-friendly features like the sight glass and magnetic protection, the aFe Street Series cover addresses the primary causes of differential failure—heat and contamination. Whether you are hauling a fifth-wheel trailer or navigating demanding terrain, this kit provides the structural integrity and cooling capacity required to keep your 14-bolt axle operating at peak performance.