This page lists 26 automatic transmission parts for the 2021 Honda Pilot, across 7 part types, covering the 3.5L V6 engine. Every part shows its brand, manufacturer part number and fitment notes.
The automatic transmission on the 2021 Honda Pilot covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. The largest groups are Transmission Fluid (13 parts), Transmission Fluid Additive (5 parts) and Transmission Mount (3 parts). The other 4 part types cover the remaining 5 parts.
Every part on this page is matched to the 3.5L V6 — the only engine offered in the 2021 Honda Pilot.
The most listed brands for 2021 Honda Pilot automatic transmission parts are LUBEGARD (6 parts), VALVOLINE (4 parts) and DORMAN (3 parts), plus 9 more brands. Quality grades include Multi-Vehicle and ZF Fluid.
4 parts on this 2021 Honda Pilot page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including ACDELCO 109243 (Transmission Fluid) and LUBEGARD 19610 (Transmission Fluid Additive). Click any part number to see every vehicle that part fits.
Case Vent
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 14161 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the vents on a transmission or axle housing.
One part is listed for the 2021 Honda Pilot — DORMAN 14161.
Drain Plug Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 652530CD | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 20 MMAt Transfer Case | View on Amazon |
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.
One part is listed for the 2021 Honda Pilot — DORMAN 652530CD.
Fluid Cooler
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN | 918863 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | At Transmission | View on Amazon |
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.
This group shows a single part: DORMAN 918863.
Fluid Cooler Line / Hose
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SUNSONG | 5802199 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Auxiliary Cooler Outlet (Passenger Side)AWD | View on Amazon |
| SUNSONG | 5802200 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Auxiliary Cooler Inlet (Driver Side)AWD | View on Amazon |
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.
2 Fluid Cooler Line / Hose parts for the 2021 Honda Pilot come from SUNSONG.
This group includes SUNSONG 5802199 and SUNSONG 5802200.
Transmission Fluid
Dexron
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | 109243 | 🇺🇸 US | Container Type: Plastic Container | View on Amazon |
Multi-Vehicle
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL Popular | 126505 | 🇺🇸 US 🇨🇦 CA | Multi-Vehicle ATF | View on Amazon |
| VALVOLINE Popular | VV3246 | 🇺🇸 US | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Quart | View on Amazon |
| LIQUI MOLY | 20032 | 🇺🇸 US | Top Tec ATF 18001 Liter | View on Amazon |
| LIQUI MOLY | 22036 | 🇺🇸 US | Top Tec ATF 18005 Liter | View on Amazon |
| LIQUI MOLY | 20034 | 🇺🇸 US | Top TEC ATF 180020 Liter | View on Amazon |
| LUBEGARD | 69032 | 🇺🇸 US 🇨🇦 CA | 1 QuartComplete Full Synthetic ATF Fluid | View on Amazon |
| VALVOLINE | 773775 | 🇺🇸 US | Max Life Multi-Vehicle or Maxlife Multi-Vehicle Full Synthetic ATF1 Gallon | View on Amazon |
| VALVOLINE | 881051 | 🇺🇸 US | Maxlife Multi-Vehicle Full Synthetic ATF5 Gallon Bay Box | View on Amazon |
ZF Fluid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PENTOSIN | 1058111 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | ATF91 Liter | View on Amazon |
| PENTOSIN | 1058211 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | ATF95 Liters | View on Amazon |
| ZF | AA01500001 | 🇺🇸 US 🇨🇦 CA | ZF Lifeguard Fluid 9includes 1 L Bottle | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE | 899179 | 🇺🇸 US | Extended Protection Full Synthetic ATF1 Quart | View on Amazon |
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.
13 Transmission Fluid parts for the 2021 Honda Pilot come from 7 brands — VALVOLINE, LIQUI MOLY, PENTOSIN and 4 other brands. The "Popular" part is ACDELCO 109243.
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 8 options from VALVOLINE, LIQUI MOLY, MOBIL and 1 other brand — 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 ZF Fluid section lists 3 options from PENTOSIN and ZF — grouped under the catalog's "ZF Fluid" designation — the notes column spells out what sets them apart. PENTOSIN 1058111 is listed in this group.
1 further part sits outside the graded sections, with the same engine-level match.
Transmission Fluid Additive
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LUBEGARD Popular | 19610 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Instant Shudder Fixx2 oz | View on Amazon |
| LUBEGARD | 60902 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Automatic Transmission Fluid Protectant10 oz | View on Amazon |
| LUBEGARD | 63010 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum Universal ATF Protectant10 oz | View on Amazon |
| LUBEGARD | 63016 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum Universal ATF Protectant15 oz | View on Amazon |
| LUBEGARD | 63032 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Platinum Universal ATF Protectant32 oz | View on Amazon |
This table covers the conditioners and additives used with this transmission fluid.
5 Transmission Fluid Additive parts for the 2021 Honda Pilot come from LUBEGARD. The "Popular" part is LUBEGARD 19610.
Listed part numbers: LUBEGARD 19610, LUBEGARD 60902 and LUBEGARD 63010, plus the other parts above.
Transmission Mount
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ANCHOR | 10022 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Left | View on Amazon |
| DEA / MARMON RIDE CONTROL | A65100 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| WESTAR | EM7368 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
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.
3 Transmission Mount parts are listed for the 2021 Honda Pilot, from ANCHOR, DEA / MARMON RIDE CONTROL and WESTAR.
Listed part numbers: ANCHOR 10022, DEA / MARMON RIDE CONTROL A65100 and WESTAR EM7368.
Buying Automatic Transmission Parts for a 2021 Honda Pilot
On this vehicle, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts.
- Confirm you have the 3.5L V6 engine — every part on this page is matched to it.
- Read the notes on each row for position, trim and spec qualifiers before you order.
- Where labor overlaps, replace the filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Transmission Fluid and Transmission Fluid Additive .
Frequently Asked Questions
How many automatic transmission parts fit the 2021 Honda Pilot?
Our catalog currently lists 26 automatic transmission parts for the 2021 Honda Pilot across 7 subcategories and 12 brands, covering the 3.5L V6 engine. Each part is matched to the engine(s) it fits.
What are the signs of automatic transmission problems on a 2021 Honda Pilot?
Common symptoms include delayed or harsh engagement, slipping under load, fluid that smells burnt, or shuddering at light throttle around 40 mph. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What should I replace at the same time?
Where labor overlaps, replace the filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
What do the market flags (US, CA, MX) on each part mean?
They show the market for which the manufacturer published application data for that part — where the vehicle was first sold, not where the part was made. If your 2021 Honda Pilot was originally sold in the US, the safest choice is a part marked for the US market.
How do I make sure a part fits my 2021 Honda Pilot?
Every part on this page is matched to the 3.5L V6 engine. Then use exactly the fluid specification in the notes — automatic transmissions are the least forgiving component on the vehicle about fluid choice. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Honda Pilot
Automatic Transmission Parts for Other Honda Pilot Years
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Manufacturer names, model designations and part numbers are used for identification and fitment reference only. AutoFactsDB is an independent catalog and is not affiliated with, endorsed by, or sponsored by any vehicle manufacturer displayed on this page.