8.8 IFS Front Axle Assembly 4.56

The Zumbrota RAA440-1350X2 is a Zumbrota Performance Axle (ZPA) front axle assembly engineered for Ford 8.8 IFS applications, specifically for 1997-2004 Ford F150 models (including the '04 Heritage). This assembly features a performance-grade 4.56 ratio open differential, designed to meet the demands of increased traction, higher speeds, and heavier towing capabilities that may exceed the limits of stock components. Each Zumbrota axle assembly is meticulously rebuilt to the highest standards of precision and reliability. The process involves thorough inspection of the housing for straightness, cracks, and surface wear. All internal components, including ring and pinions, internal gears, clutches, and carriers, are fully inspected and tested. To ensure longevity and optimal performance, all bearings and seals are replaced, and gears are inspected for proper tooth contact patterns and rolling torque. It has a fluid capacity of 2.2 quarts and requires non-synthetic 80w-90 gear oil. The Zumbrota RAA440-1350X2 is built with the understanding that OE replacements may not suffice when considering larger tires, higher horsepower, or significant towing needs, making aftermarket upgrades like custom ratios, limited-slip differentials, or lockers essential for tailored performance.