RKT Performance offers limited 6 months/unlimited miles warranty. RKT Performance warrants that all transmissions and differentials sold/built by RKT Performance will be free from defects in parts and workmanship under normal driving conditions. The warranty is null and void when used in racing environment; improper installation; improper break-in. The differentials gears are not cover under the limited warranty if it develops noise once the gears have been broken in properly. The warranty does not cover towing, labor to remove and install, shipping, fluids, or rental charges. Warranty is not transferable. All returns must be within 30 days and are subject to 15% restocking fee.
One of the most important things to do before enjoying your transmission and/or differential is to break it in properly. Drive it easy through all gears and with varying speeds for at least 300 miles for transmissions. For differentials, vary the speed from 30 to 45 mph but DO NOT exceed 45 mph at any time. minimum 500 miles for the differential break in.
Transmission Fluid: GM part # 88861800
Differential Fluid: GM part # 88862624