Keep clean fluid moving through your automatic transmission with the ATP Transmission Filter Kit B-401 (also written B401). It drops in as a direct-fit replacement for the 2007-2012 Hyundai Elantra and the 2010 Kia Forte — see the "Vehicles it fits" section for engine-level details on the listed applications.
ATP transmission filters are designed to keep the life blood of your transmission — the transmission fluid — clean. Every transmission eventually accumulates debris from normal wear and tear, so keeping the fluid clean helps protect the valve body and other vital components from clogging.
Signs the filter may need replacing include delayed or harsh shifts, slipping, or contaminated fluid — diagnose the cause before servicing, as these symptoms can have other sources. Install it with fresh transmission fluid following the vehicle service procedure.
Interchange: 46321-23000
4632123000
This part cross-references / interchanges with the following part numbers:
What vehicles does the ATP B-401 fit?
It is a direct-fit replacement for the 2007-2012 Hyundai Elantra and the 2010 Kia Forte. Check the "Vehicles it fits" section to confirm fitment for your vehicle.
What does a transmission filter do?
It keeps the transmission fluid clean by trapping debris from normal wear, helping protect the valve body and other vital components from clogging.
Why should I replace the transmission filter?
Regularly replacing the filter helps keep the fluid clean, extends transmission life, and reduces the possibility of costly repairs that could have been avoided.
What interchange number does this filter cross to?
It replaces interchange number 46321-23000 (also listed as 4632123000). Match the number to your original part to confirm.
What are signs the filter may need replacing?
Delayed or harsh shifts, slipping, or contaminated fluid can be signs. Diagnose the cause first, since these symptoms may have other sources.
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WARNING: These products can expose you to chemicals including lead and phthalates, which are known to the State of California to cause cancer and birth defects or other reproductive harm. For more information go to www.P65Warnings.ca.gov.
