Our products undergo rigorous quality control to ensure stable performance and high reliability. Featuring high filtering efficiency and precision, the product enhances engine performance. Made from premium paper and fiberglass materials, it is both durable and portable. The dimensions of the product are 15.8cm in length, 8.6cm in width, and 7cm in height. It is compatible with certain models, including for a specific brand's WP6, for a specific brand's D4-180 132kW 179hp/D4-210 150kW 204hp, for a specific brand's Diesel Engines D4 & D6, for a specific brand's Marine applications, and for certain Gensets models D9A2A, D9A2A MG & D9A2A D9A-MG. The OE number is 3931050950. Item Name: Filter Element Material: Fiber-glass, Paper Color: White OE Number: 3931050950 Applicable Model: for a specific brand's WP6, for a specific brand's D4-180 132kW 179hp/D4-210 150kW 204hp, for a specific brand's Diesel Engines D4 & D6, for a specific brand's Marine applications, for certain Gensets models D9A2A, D9A2A MG & D9A2A D9A-MG Features: Modified, Effective, Professional Size Details: Product Size: 15.8cm x 8.6cm x 7cm/6.22" x 3.39" x 2.76" (Approx.) Inner Diameter: 4.6cm/1.81" (Approx.) Outer Diameter: 8.6cm/3.39" (Approx.) Notes: Due to light and screen setting differences, the item's color may differ slightly from the pictures. Please allow slight dimension differences due to manual measurements. Package Includes: 1 x Filter Element