Outside Diameter: 3-7/32" (81.8) Inside Diameter: 1-17/32" (38.9) One End Length: 5-15/16" (150.8) O-Ring: [6] Viton Included Micron Rating: 17 Nominal; 40 Absolute Application: Allison World Transmissions with 4 Inch Sump Genuine Baldwin Filter Kit Heavy-duty transmission elements remove wear particles, preventing them from damaging moving parts and ensuring proper system function. Replacement elements should be changed based on OE recommended service hours.