3N71A LN371B Filter and Pan Gasket Automatic Transmission [72-UP]

When a 3N71A or LN371B automatic transmission is on the bench for a fluid service or pan-drop inspection, having the correct filter and pan gasket ready before the pan comes off saves time and avoids a mid-job wait for parts. This two-piece set pairs one M41 filter (covering 1975-and-later applications within the supported range) with one L4N71B bottom pan cork gasket sized for the L3N71B-L4N71B pan, so both wear items are replaced in the same service visit.

The set contains exactly 2 pieces and weighs 1 lb shipped. It does not include friction clutch packs, steel reaction plates, bands, bushings, or any other internal components. If your inspection turns up worn friction material or damaged steels, those parts will need to be sourced separately before the transmission is buttoned up.

REMCO has worked with automatic transmission parts since 1991. Each order is assembled here by hand, component by component, and checked against its parts list before the box is sealed. A printed parts list ships inside the box so the receiving technician can verify both pieces are present before the job starts.

To confirm this set applies to your unit, check the transmission code directly on the case and make sure it reads 3N71A or LN371B. Also verify the vehicle model year falls within the 1972-to-present coverage window, and note that the M41 filter applies specifically to 1975-and-later units. If the code or year does not match, do not order: compatibility on these JATCO-family units depends on the exact transmission designation, not just the vehicle it came out of.

• Pan service on 3N71A and LN371B automatic transmission units calls for a fresh filter and a reliable pan seal; this set addresses both in one order.
• This set does NOT include friction discs, steel plates, bands, bushings, or seals beyond the pan gasket. Review your parts list before ordering to avoid a second shipment.
• Two distinct components shipped together: the cork bottom pan gasket is cut for the L3N71B-L4N71B pan profile, and the M41 filter covers 1975-and-later application within the supported range.
• Kit contains exactly 2 pieces: 1 L4N71B bottom pan cork gasket and 1 M41 filter (75-UP). Total shipped weight is 1 lb.
• Before ordering, confirm the transmission code stamped on the unit matches 3N71A or LN371B and verify the build year falls within the 1972-to-present range covered here.