The 2026 Lexus TX550H+ has 6 automatic transmission parts with verified fitment on this page — 1 part type and 2 brands, covering the 3.5L V6 ELECTRIC/GAS engine. Each part includes a manufacturer part number and application notes.
On the 2026 Lexus TX550H+, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. Every listed part is a Transmission Fluid.
The 2026 Lexus TX550H+ came with a single engine, the 3.5L V6 ELECTRIC/GAS, and every part is verified against it.
2 brands supply automatic transmission parts for the 2026 Lexus TX550H+, led by LUBEGARD (4 parts) and PENTOSIN (2 parts).
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2026 Lexus TX550H+. 2 parts have it, including PENTOSIN 1058113 (Transmission Fluid) and PENTOSIN 1058215 (Transmission Fluid). Each part number opens a page with every vehicle that part fits.
Transmission Fluid
ATF 64
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| PENTOSIN Popular | 1058113 | 🇺🇸 US | 1 LiterATF64 or ATF44 | View on Amazon |
| PENTOSIN Popular | 1058215 | 🇺🇸 US | 5 LitersATF64 or ATF44 | View on Amazon |
CVT
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LUBEGARD | 68112 | 🇺🇸 US | Complete CVT Fluid32 oz | View on Amazon |
| LUBEGARD | 68232 | 🇺🇸 US | Complete CVT Fluid5 Gallon | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LUBEGARD | 68115 | 🇺🇸 US | Complete CVT Fluid5 Quart | View on Amazon |
| LUBEGARD | 69450 | 🇺🇸 US | Complete CVT Fluid32 oz, Canada compliant | 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.
6 Transmission Fluid parts are listed for the 2026 Lexus TX550H+, from LUBEGARD and PENTOSIN. PENTOSIN 1058113 carries the "Popular" badge.
The ATF 64 section lists 2 options from PENTOSIN — grouped under the catalog's "ATF 64" designation — the notes column spells out what sets them apart. PENTOSIN 1058113 is listed in this group.
The CVT section lists 2 options from LUBEGARD — grouped under the catalog's "CVT" designation — the notes column spells out what sets them apart. LUBEGARD 68112 is listed in this group.
2 ungrouped parts are not assigned to a grade, with the same engine-level match.
Part numbers include PENTOSIN 1058113, PENTOSIN 1058215 and LUBEGARD 68112, among others listed above.
Buying Automatic Transmission Parts for a 2026 Lexus TX550H+
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 ELECTRIC/GAS 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 .
Frequently Asked Questions
How many automatic transmission parts fit the 2026 Lexus TX550H+?
Our catalog currently lists 6 automatic transmission parts for the 2026 Lexus TX550H+ across 1 subcategory and 2 brands, covering the 3.5L V6 ELECTRIC/GAS engine. Each part is matched to the engine(s) it fits.
What are the signs of automatic transmission problems on a 2026 Lexus TX550H+?
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 2026 Lexus TX550H+ 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 2026 Lexus TX550H+?
Every part on this page is matched to the 3.5L V6 ELECTRIC/GAS 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 2026 Lexus TX550H+
Automatic Transmission Parts for Other Lexus TX550H+ 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.