24 Engine parts are listed for the 2026 Lexus RX450H+, in 9 part types, covering the 2.5L L4 ELECTRIC/GAS engine. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2026 Lexus RX450H+, 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. 18 parts of the 24 listed are Oil Filter (11 parts), Oil (6 parts) and Intake Valve (1 part). The other 6 part types cover the remaining 6 parts.
Every part on this page is matched to the 2.5L L4 ELECTRIC/GAS — the only engine offered in the 2026 Lexus RX450H+.
The most listed brands for 2026 Lexus RX450H+ engine parts are MELLING (4 parts), VALVOLINE (3 parts) and VARIOUS MFR (3 parts), plus 10 more brands. Quality grades include Economy, Standard Replacement and High Performance / Heavy Duty.
5 parts on this 2026 Lexus RX450H+ page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including LIQUI MOLY 20328 (Oil) and VARIOUS MFR PG4476 (Oil Filter). Click any part number to see every vehicle that part fits.
Intake Valve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| QUALCAST | 1030532 | 🇺🇸 US 🇨🇦 CA | 1.417 Head DIA. 0.216 Stem. 4.113 OAL. OEM # 13711F0010 | View on Amazon |
This table covers the intake valves that let air (and fuel, on port-injected engines) into the cylinder. Typical signs include a circuit that will not hold, a whistle, or a code for this valve. A stuck valve is often debris. Clean the ports before installing the new one.
One part is listed for the 2026 Lexus RX450H+ — QUALCAST 1030532.
Oil
Summary: Notes list SAE 0W-16. Confirm the weight on the filler cap before you buy. Replacement brands in this table include VALVOLINE, LIQUI MOLY and MOBIL.
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LIQUI MOLY Popular | 20328 | 🇺🇸 US 🇨🇦 CA | Special Tec AA 0W-165 Liter | View on Amazon |
| MOBIL Popular | 124321 | 🇺🇸 US 🇨🇦 CA | 0W-16Mobil 1 Advanced Fuel Economy | View on Amazon |
| LIQUI MOLY | 20324 | 🇺🇸 US 🇨🇦 CA | Special Tec AA 0W-161 Liter | View on Amazon |
| VALVOLINE | 878400 | 🇺🇸 US 🇨🇦 CA | Advanced Protection Full Synthetic SAE 0W-16Easy Pour 1 Quart | View on Amazon |
| VALVOLINE | 878399 | 🇺🇸 US 🇨🇦 CA | Advanced Protection Full Synthetic SAE 0W-16Easy Pour 5 Quart | View on Amazon |
| VALVOLINE | 886758 | 🇺🇸 US 🇨🇦 CA | Advanced Protection Full Synthetic SAE 0W-165 Gallon Bay Box | 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.
6 Oil parts are listed for the 2026 Lexus RX450H+, from VALVOLINE, LIQUI MOLY and MOBIL. LIQUI MOLY 20328 carries the "Popular" badge.
Part numbers include LIQUI MOLY 20328, MOBIL 124321 and LIQUI MOLY 20324, among others listed above.
Oil Filler Cap
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES | 31285 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the caps on the oil filler neck.
One part is listed for the 2026 Lexus RX450H+ — GATES 31285.
Oil Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR Popular | PG4476 | 🇺🇸 US 🇨🇦 CA | Spin-On | View on Amazon |
| BOSCH | 72229WS | 🇺🇸 US 🇨🇦 CA | Workshop Oil Filter | View on Amazon |
| FVP | R0332 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| PRO-TEC | PXL10332 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| VARIOUS MFR | PO4476TY2 | 🇺🇸 US 🇨🇦 CA | OE StyleSpin-On | View on Amazon |
High Performance / Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL Popular | M1103A | 🇺🇸 US 🇨🇦 CA | Extended Performance | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | PF1233 | 🇺🇸 US 🇨🇦 CA | GM Original EquipmentSpin-On | View on Amazon |
| BECK/ARNLEY | 0418066 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| BOSCH | 3311 | 🇺🇸 US 🇨🇦 CA | Premium Oil FilterHeight: 3.149606 In | View on Amazon |
| VARIOUS MFR | PG4476EX | 🇺🇸 US 🇨🇦 CA | Extended LifeSpin-On | View on Amazon |
| WIX | WL10332 | 🇺🇸 US 🇨🇦 CA | 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.
11 Oil Filter parts are listed for the 2026 Lexus RX450H+, from VARIOUS MFR, BOSCH, FVP and 5 other brands. VARIOUS MFR PG4476 carries the "Popular" badge.
In the Economy grade, VARIOUS MFR, BOSCH, FVP and 1 other brand supply 5 parts: the catalog's value-priced group. A representative part number is VARIOUS MFR PG4476.
In the High Performance / Heavy Duty grade, MOBIL supplies 1 part: 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, BECK/ARNLEY, BOSCH and 2 other brands — built to original-equipment specification. ACDELCO PF1233 is listed in this group.
Oil Pump Chain
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | 1084 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the chains that drive the oil pump.
This group shows a single part: MELLING 1084.
Oil Pump Chain Tensioner
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | BT7064 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Oil Pump Chain tensioners. Typical signs include belt flutter, a chirp that returns after a new belt, or an arm that no longer damps. Replace the tensioner with the belt at higher mileage.
One part is listed for the 2026 Lexus RX450H+ — MELLING BT7064.
Oil Pump Control Valve / Solenoid
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GATES | VVS398 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Oil Pump Control Valve solenoids. Typical signs include a harsh or missing shift, or a code for this solenoid circuit. Check resistance and the connector before dropping the pan for a solenoid.
This group shows a single part: GATES VVS398.
Oil Pump Sprocket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | S1325 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Oil Pump sprockets.
This group shows a single part: MELLING S1325.
Timing Chain
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | 1083 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the timing chains that keep the cams in time with the crank.
This group shows a single part: MELLING 1083.
Buying Engine Parts for a 2026 Lexus RX450H+
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 2.5L 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 Filter and Oil .
Frequently Asked Questions
How many engine parts fit the 2026 Lexus RX450H+?
Our catalog currently lists 24 engine parts for the 2026 Lexus RX450H+ across 9 subcategories and 13 brands, covering the 2.5L 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 RX450H+?
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 RX450H+?
Oil rows on this page include SAE 0W-16. 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 RX450H+ 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 RX450H+?
Every part on this page is matched to the 2.5L 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 RX450H+
Engine Parts for Other Lexus RX450H+ Years
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