For all you Allison transmission owners out there, this Big Filter replacement kit is exactly what you need to keep your equipment running smoothly! This is a direct interchange for Allison part number 29558118, meaning it's designed to fit perfectly and function exactly like the OEM filter. The kit includes not just one, but two high-capacity filters plus all the necessary gaskets and O-rings you need for a complete filter change - talk about convenience! Measuring 5.98 inches in height with a 3.21 inch outer diameter, this glass media filter has a beta ratio of 200/20.7 and a micron rating of 20, providing excellent filtration for HH, HL, HM, and HV fluid types. What's really impressive is that these are made right here in the USA according to strict ISO specifications including ISO 16889 for cleanliness, ISO 3968 for fluid compatibility, ISO 2943 for flow fatigue resistance, and several others. Big Filter is committed to quality and reliability, so you can trust that your Allison 3000-4000 transmission is getting the protection it needs. The high-capacity design means longer service intervals and better protection against contaminants that can damage your transmission. Whether you're maintaining commercial trucks, heavy equipment, or any vehicle with an Allison transmission, this filter kit delivers OEM-level quality without the OEM price tag. The packaging clearly displays the Big Filter logo and part number so you know you're getting the genuine article. Proper maintenance is crucial for transmission longevity, and starting with a quality filter makes all the difference. This kit takes the guesswork out of your next filter change and ensures your transmission stays protected for the long haul.
Free 30-day returns 
Free 30-day returns
