3N71A LN371B Filter and Bottom Pan Gasket Automatic Transmission [83-UP]

Keeping fluid flow clean through the valve body starts at the filter, and keeping fluid inside the pan starts at the gasket seal; this two-piece set addresses both in one order for 3N71A and LN371B automatic transmission units built from 1983 forward. What separates this set from a generic assortment is that the filter and the gasket are selected specifically for the L4N71B application.

The filter is the E4N71B unit, sized and ported for the L4N71B transmission. The bottom pan gasket is cork material, cut for the L4N71B pan. Together they total 2 pieces and the packaged weight is 1 lb, so there is no ambiguity about what arrives in the box.

What is not in this set matters as much as what is. There are no friction discs, no steel reaction plates, no sealing rings, no thrust washers, no bands, and no solenoids. If your rebuild calls for those components, they need to be sourced separately. This listing covers the filter and cork pan gasket only.

At REMCO, kits like this one are assembled by hand since 1991, piece by piece, checked against a printed parts list before the box closes. That list ships inside the box so the technician at the bench can count and verify on arrival rather than trust memory.

Before placing the order, pull the tag or stamping on the unit and confirm the code reads 3N71A or LN371B. Also verify the model year sits within the 1983-UP production range. A mismatch on either point means the filter port or gasket profile may not align, and confirming beforehand is faster than processing a return afterward.

• Pairing a fresh filter with a new cork bottom pan gasket closes two common sources of fluid loss and contaminated flow in a single service step, reducing the chance of a repeat teardown.
• This set does NOT include friction discs, steel plates, sealing rings, bands, or any other internal components. Review your parts list carefully before ordering to confirm this covers what your rebuild requires.
• The filter included is the E4N71B unit designed for L4N71B applications from 1983 forward, and the cork gasket is matched to the L4N71B bottom pan, so both pieces are spec-matched to the same transmission family rather than generic substitutes.
• Exact contents: 1 L4N71B cork bottom pan gasket and 1 E4N71B filter for L4N71B 1983-UP automatic transmission applications. Total kit weight is 1 lb. Each box ships with a printed parts list so you can verify both items on arrival.
• Before ordering, confirm the transmission code stamped on the unit matches 3N71A or LN371B and that the build year falls within the 1983-UP range. Ordering against the wrong code is the most common reason for a return.