This page lists 31 engine parts for the 2026 Lexus UX300H, across 4 part types, covering the 2.0L L4 ELECTRIC/GAS engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2026 Lexus UX300H, the engine covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components. Most of the listed parts are Oil (18 parts), Oil Filter (10 parts) and Valve Spring (2 parts). The other 1 part type covers the remaining 1 part.
Every part on this page is matched to the 2.0L L4 ELECTRIC/GAS — the only engine offered in the 2026 Lexus UX300H.
The most listed brands for 2026 Lexus UX300H engine parts are IDEMITSU (16 parts), LIQUI MOLY (2 parts) and BOSCH (2 parts), plus 9 more brands. Quality grades include Standard Replacement, Economy and High Performance / Heavy Duty.
6 parts on this 2026 Lexus UX300H page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including IDEMITSU 30015204750 (Oil) and ACDELCO PF1233 (Oil Filter). Click any part number to see every vehicle that part fits.
Oil
Summary: Notes list SAE 0W-16, SAE 0W-20, SAE 5W-20 and SAE 5W-30. Confirm the weight on the filler cap before you buy. Replacement brands in this table include IDEMITSU and LIQUI MOLY.
Full Synthetic
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| IDEMITSU Popular | 30015204750 | 🇺🇸 US | IFG3 5W-30 SP/Motor Oil1 Quart | View on Amazon |
| IDEMITSU Popular | 30015229750 | 🇺🇸 US | IFG3 5W-20 SP/Motor Oil1 Quart | View on Amazon |
| IDEMITSU Popular | 30015203750 | 🇺🇸 US | IFG3 0W-20 SP/Motor Oil1 Quart | View on Amazon |
| IDEMITSU Popular | 30016051953 | 🇺🇸 US | IFG3 0W-20 SQ/GF-7A5 Quart | View on Amazon |
| IDEMITSU | 30016050750 | 🇺🇸 US | IFG3 0W-16 SQ/GF-7B1 Quart | View on Amazon |
| IDEMITSU | 30016051750 | 🇺🇸 US | IFG3 0W-20 SQ/GF-7A1 Quart | View on Amazon |
| IDEMITSU | 30016052750 | 🇺🇸 US | IFG3 5W-30 SQ/GF-7A1 Quart | View on Amazon |
| IDEMITSU | 30016054750 | 🇺🇸 US | IFG3 5W-20 SQ/GF-7A1 Quart | View on Amazon |
| IDEMITSU | 30015229953 | 🇺🇸 US | IFG3 5W-20 SP/Motor Oil5 Quart | View on Amazon |
| IDEMITSU | 30016050953 | 🇺🇸 US | IFG3 0W-16 SQ/GF-7B5 Quart | View on Amazon |
| IDEMITSU | 30016052953 | 🇺🇸 US | IFG3 5W-30 SQ/GF-7A5 Quart | View on Amazon |
| IDEMITSU | 30016054953 | 🇺🇸 US | IFG3 5W-20 SQ/GF-7A5 Quart | View on Amazon |
High Mileage (>75,000 Miles)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| IDEMITSU | 30015121750 | 🇺🇸 US | IFG5 0W-16 SP/GF-6B1 Quart | View on Amazon |
Racing
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| IDEMITSU | 30018100750 | 🇺🇸 US | 10W30 Rotary Racing Oil1 Quart | View on Amazon |
Synthetic Blend
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| IDEMITSU | 30015165750 | 🇺🇸 US | IFG5 0W-8 JASO GLV-11 Quart | View on Amazon |
| IDEMITSU | 30015165953 | 🇺🇸 US | IFG5 0W-8 JASO GLV-15 Quart | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LIQUI MOLY | 22279 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Special TEC AA 0W-81 Liter | View on Amazon |
| LIQUI MOLY | 22280 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Special TEC AA 0W-85 Liter | View on Amazon |
This table covers the engine oils listed by grade and specification for this engine. Typical signs include a low-oil lamp, knocking after a long interval, or oil that has gone thin and black well before the next service. Match the viscosity and spec in the notes (and on the filler cap). The tables group grades — they are not interchangeable.
18 Oil parts are listed for the 2026 Lexus UX300H, from IDEMITSU and LIQUI MOLY. IDEMITSU 30015204750 carries the "Popular" badge.
In the Full Synthetic grade, IDEMITSU supplies 12 parts: full-synthetic oils. A representative part number is IDEMITSU 30015204750.
The High Mileage (>75,000 Miles) section lists 1 option from IDEMITSU — oils grouped for high-mileage engines. IDEMITSU 30015121750 is listed in this group.
In the Racing grade, IDEMITSU supplies 1 part: grouped under the catalog's "Racing" designation — the notes column spells out what sets them apart. A representative part number is IDEMITSU 30018100750.
In the Synthetic Blend grade, IDEMITSU supplies 2 parts: synthetic-blend oils. A representative part number is IDEMITSU 30015165750.
2 ungrouped parts are not assigned to a grade, with the same engine-level match.
Oil Drain Plug
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| REIN | HWU0112 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the drain plugs in the oil pan.
One part is listed for the 2026 Lexus UX300H — REIN HWU0112.
Oil Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| BOSCH | 72229WS | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Workshop Oil Filter | View on Amazon |
| FVP | R1394 | 🇺🇸 US 🇨🇦 CA | Media Material: CelluloseSpin-On Filter | View on Amazon |
| PRO-TEC | PXL51394 | 🇺🇸 US 🇨🇦 CA | Media Material: CelluloseSpin-On Filter | View on Amazon |
High Performance / Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL | M1103A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Extended Performance | View on Amazon |
| WIX | 51394XP | 🇺🇸 US 🇨🇦 CA | XP Extreme DutyBest For Synthetic Motor Oils | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | PF1233 | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentSpin-On | View on Amazon |
| WIX Popular | 51394 | 🇺🇸 US 🇨🇦 CA | Media Material: CelluloseSpin-On Filter | View on Amazon |
| BECK/ARNLEY | 0418066 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| BOSCH | 3311 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Premium Oil FilterHeight: 3.149606 In | View on Amazon |
| MANN | W683 | 🇺🇸 US 🇨🇦 CA | Anti-Drain Back Valve: YESBypass Relief Valve Setting: 13 PSI | View on Amazon |
This table covers the oil filters that screw onto this engine's filter mount. Typical signs include low oil pressure after a service, or a filter that will not spin off because the old gasket stayed on the block. Lube the new gasket and tighten to the spec on the box; a double-gasket install dumps the sump on the first drive.
10 Oil Filter parts are listed for the 2026 Lexus UX300H, from BOSCH, WIX, FVP and 5 other brands. ACDELCO PF1233 carries the "Popular" badge.
In the Economy grade, BOSCH, FVP and PRO-TEC supply 3 parts: the catalog's value-priced group. A representative part number is BOSCH 72229WS.
In the High Performance / Heavy Duty grade, MOBIL and WIX supply 2 parts: grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. A representative part number is MOBIL M1103A.
The Standard Replacement section lists 5 options from ACDELCO, WIX, BECK/ARNLEY and 2 other brands — built to original-equipment specification. ACDELCO PF1233 is listed in this group.
Valve Spring
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| QUALCAST | 325507 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | IntakeConical OEM # 90501A0141 | View on Amazon |
| QUALCAST | 325508 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | ExhaustConical OEM # 90501A0139 | View on Amazon |
This table covers the springs that close each intake and exhaust valve. Typical signs include a sagging corner, a broken coil, or a clunk from the spring pocket. Replace springs in axle pairs and inspect the seats.
2 Valve Spring parts for the 2026 Lexus UX300H come from QUALCAST.
Listed part numbers: QUALCAST 325507 and QUALCAST 325508.
Buying Engine Parts for a 2026 Lexus UX300H
On this vehicle, the engine covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components.
- Confirm you have the 2.0L L4 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 seals and gaskets for anything you open up; a timing job should always include the tensioner and guides, not just the belt or chain.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Oil and Oil Filter .
Frequently Asked Questions
How many engine parts fit the 2026 Lexus UX300H?
Our catalog currently lists 31 engine parts for the 2026 Lexus UX300H across 4 subcategories and 12 brands, covering the 2.0L L4 ELECTRIC/GAS engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 2026 Lexus UX300H?
Common symptoms include oil spots under the vehicle, blue or white exhaust smoke, ticking from the valvetrain, or coolant mysteriously disappearing. If you notice any of these, identify the affected subcategory above and cross-reference the part numbers listed.
What oil viscosity is listed for the 2026 Lexus UX300H?
Oil rows on this page include SAE 0W-16, SAE 0W-20, SAE 5W-20 and SAE 5W-30. Confirm the engine and the weight on the filler cap before you buy — high-mileage and standard fills can differ.
What should I replace at the same time?
Where labor overlaps, replace the seals and gaskets for anything you open up; a timing job should always include the tensioner and guides, not just the belt or chain.
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 UX300H 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 UX300H?
Every part on this page is matched to the 2.0L L4 ELECTRIC/GAS engine. Then engine hard parts are unforgiving of guesswork — confirm the casting or engine code before ordering, because one model year can hide two different blocks. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2026 Lexus UX300H
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