2021 Toyota Highlander Automatic Transmission Parts

This table covers the gaskets that seal the Drain Plug. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

One part is listed for the 2021 Toyota Highlander — DORMAN 652531CD.

This table covers the replacement filters for this application — the table heading and notes say which circuit. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for. Read more

3 Filter parts for the 2021 Toyota Highlander come from 3 brands — VARIOUS MFR, BECK/ARNLEY and RAYBESTOS POWERTRAIN.

The Economy section lists 1 option from VARIOUS MFR — the catalog's value-priced group. VARIOUS MFR PT99811 is listed in this group.

In the Standard Replacement grade, BECK/ARNLEY and RAYBESTOS POWERTRAIN supply 2 parts: built to original-equipment specification. A representative part number is BECK/ARNLEY 0440465.

Part numbers include VARIOUS MFR PT99811, BECK/ARNLEY 0440465 and RAYBESTOS POWERTRAIN 515658.

This table covers the heat exchangers that cool transmission fluid. Typical signs include fluid that overheats, a leak at the cooler fittings, or milky fluid that says coolant and ATF have mixed. Flush the lines when you replace a cooler. Cross-contamination is how a small leak becomes a transmission job. Read more

5 Fluid Cooler parts for the 2021 Toyota Highlander come from 4 brands — TYC, DORMAN, GPD and 1 other brand. 1 part fits every engine; the other 4 are engine-specific.

Part numbers include DORMAN 918696, GPD 2611451 and TECHPRO TO4050118, among others listed above.

This table covers the Fluid Cooler Line hoses. Typical signs include swelling, cracks, a soft spot, or a leak at a clamp. Replace adjacent aged hoses while the system is drained — they share the same heat cycle. Read more

2 Fluid Cooler Line / Hose parts for the 2021 Toyota Highlander come from SUNSONG.

This group includes SUNSONG 5801849 and SUNSONG 5801857.

This table covers the pans that hold automatic-transmission fluid. Read more

3 Fluid Pan parts are listed for the 2021 Toyota Highlander, from AUTOTECNICA, DORMAN and SKP.

This group includes AUTOTECNICA TY1223097, DORMAN 265915 and SKP SK265915.

This table covers the gaskets that seal the Fluid Pan. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for. Read more

This group shows a single part: PA CARGO 57500NF.

This table covers the rebuild kits for this assembly. Read more

PA CARGO supplies the 4 Rebuild Kit parts for the 2021 Toyota Highlander. 1 part fits every engine; the other 3 are engine-specific.

In the Banner Kit (Overhaul Kit + Friction Clutch Plates) grade, PA CARGO supplies 1 part: grouped under the catalog's "Banner Kit (Overhaul Kit + Friction Clutch Plates)" designation — the notes column spells out what sets them apart. A representative part number is PA CARGO DK5700NS.

The Master Kit (Overhaul Kit + Friction & Steel Clutch Plates) section lists 1 option from PA CARGO — grouped under the catalog's "Master Kit (Overhaul Kit + Friction & Steel Clutch Plates)" designation — the notes column spells out what sets them apart. PA CARGO DK5700N is listed in this group.

2 ungrouped parts are not assigned to a grade, with the same engine-level match.

Part numbers include PA CARGO DK5700NS, PA CARGO DK5700N and PA CARGO K57900N, among others listed above.

This table covers the automatic-transmission fluids specified for this gearbox. Typical signs include harsh or delayed shifts, fluid that smells burnt, or a shudder at light throttle. Use exactly the specification in the notes. Automatic transmissions are unforgiving of the wrong fluid. Read more

18 Transmission Fluid parts for the 2021 Toyota Highlander come from 8 brands — VALVOLINE, LIQUI MOLY, PENTOSIN and 5 other brands. The "Popular" part is ACDELCO 109243. 14 parts fit every engine; the other 4 are engine-specific.

In the ATF 64 grade, PENTOSIN supplies 2 parts: grouped under the catalog's "ATF 64" designation — the notes column spells out what sets them apart. A representative part number is PENTOSIN 1058113.

In the CVT grade, LUBEGARD supplies 1 part: grouped under the catalog's "CVT" designation — the notes column spells out what sets them apart. A representative part number is LUBEGARD 68112.

The Dexron section lists 1 option from ACDELCO — grouped under the catalog's "Dexron" designation — the notes column spells out what sets them apart. ACDELCO 109243 is listed in this group.

The Multi-Vehicle section lists 11 options from VALVOLINE, LIQUI MOLY, LUCAS OIL and 2 other brands — grouped under the catalog's "Multi-Vehicle" designation — the notes column spells out what sets them apart. MOBIL 126505 is listed in this group.

The World Standard (WS) section lists 2 options from IDEMITSU — grouped under the catalog's "World Standard (WS)" designation — the notes column spells out what sets them apart. IDEMITSU 30040096750 is listed in this group.

1 further part sits outside the graded sections, with the same engine-level match.

This table covers the conditioners and additives used with this transmission fluid. Read more

10 Transmission Fluid Additive parts for the 2021 Toyota Highlander come from LUBEGARD. The "Popular" part is LUBEGARD 19610. 1 part fits every engine; the other 9 are engine-specific.

This table covers the mounts that hold the transmission to the chassis. Typical signs include a clunk on takeoff, a vibration at idle, or a separated rubber insert. Support the powertrain before unbolting a mount, and torque the fasteners in the notes. Read more

8 Transmission Mount parts are listed for the 2021 Toyota Highlander, from DEA / MARMON RIDE CONTROL, ANCHOR, PIONEER and 1 other brand.

Part numbers include ANCHOR 10201, ANCHOR 10146 and DEA / MARMON RIDE CONTROL A42148, among others listed above.