Honda GN4 10W40 Engine Oil 1 Quart Part Number: 08C35-A141M01 Honda GN4 10W40 Engine Oil 1 Quart - OEM Honda Part Number: 08C35-A141M01 - Honda set the standard for motorcycle oil when it introduced GN4 way back in 1975. - We selected the highest-quality base stocks, and created an additive package specifically designed for the unique requirements of motorcycle and ATV engines. - Constant testing and development give todays GN4 even better shear resistance, viscosity stability and cleanliness to meet the requirements and stresses of a new era of engine technology. Honda GN4 10W40 (QUART) Part08C35-A141M01