A worn pump bushing in a 4F27E, FNR5, or FN4A-EL automatic transmission allows the pump shaft to run off-center, which drops line pressure and accelerates wear on every other component downstream. This single pump bushing, cataloged under reference L4N71B and crossing to L3N71B, is dimensioned specifically for the pump bore in these units, so the repair addresses the actual wear point rather than a generic substitute.
The listing covers one bushing. It does not include seals, o-rings, gaskets, clutch packs, steels, bands, or Automatic Transmission Filters. If your job calls for any of those parts, they need to be sourced separately. Reviewing your full parts list before placing the order saves a second trip.
REMCO has worked in automatic transmission parts since 1991 and assembles every order here, piece by piece, against a printed parts list that ships inside the box. For a single-piece order like this one, that means the bushing is physically checked and confirmed to match the catalog number before it leaves the bench. The box includes that parts list so you can verify what arrived matches what was ordered.
Application covers 4F27E, FNR5, and FN4A-EL units. The year range on record runs from 1970 forward. Before placing the order, pull the transmission identification tag or confirm the unit code directly, because dimensional differences between codes are not always visible to the eye and a mismatched bushing will not seat to spec. Packaged weight is 1 lb.
- This pump bushing addresses wear at the pump bore, helping prevent pressure loss and premature failure in 4F27E, FNR5, and FN4A-EL automatic transmission units.
- This listing is for one bushing only. It does not include seals, gaskets, o-rings, clutch discs, steels, or any other component. Verify your exact repair needs before ordering.
- The bushing is matched to the dimensional specs of the 4F27E pump bore, crossing to catalog references L3N71B and L4N71B, so fitment stays consistent with OE tolerances at that location.
- Contents: 1 pump bushing, catalog reference L4N71B (cross L3N71B). Packaged unit weight is 1 lb. Each piece is verified against its part listing before it ships from REMCO.
- Before ordering, confirm the transmission code stamped on your unit matches 4F27E, FNR5, or FN4A-EL. A wrong code means a different bushing dimension and a part that will not seat correctly.
What's in the box
- 1 x Bushing, L4N71B Pump L3N71B
Compatible vehicles
- Fits B1600 - Pickup [72-76], B1800 - Pickup [77-78], B2000 - Pickup [79-87].
| Pump bushing L3N71B L4N71B |
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