This page lists 27 engine parts for the 2026 Nissan Altima, across 3 part types, covering the 2.5L L4 engine. Every part shows its brand, manufacturer part number and fitment notes.
The engine on the 2026 Nissan Altima covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components. All 27 listed parts are Oil (21 parts), Oil Filter (5 parts) and Intake Valve (1 part).
The 2026 Nissan Altima came with a single engine, the 2.5L L4, and every part is verified against it.
7 brands supply engine parts for the 2026 Nissan Altima, led by VALVOLINE (10 parts), MOBIL (8 parts) and PENTOSIN (4 parts), plus 4 more brands. Quality grades include Economy, High Performance / Heavy Duty and Standard Replacement.
A "Popular" badge means the source catalog flagged the part as frequently chosen for the 2026 Nissan Altima. 6 parts have it, including MOBIL 124184 (Oil) and MOBIL M1108A (Oil Filter). Each part number opens a page with every vehicle that part fits.
Intake Valve
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MELLING | V5835 | 🇺🇸 US 🇨🇦 CA | 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.
This group shows a single part: MELLING V5835.
Oil
Summary: Notes list SAE 0W-20. Confirm the weight on the filler cap before you buy. Replacement brands in this table include VALVOLINE, MOBIL and PENTOSIN.
Full Synthetic
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL Popular | 124184 | 🇺🇸 US 🇨🇦 CA | 0W-20Mobil 1 Advanced Fuel Economy | View on Amazon |
| MOBIL Popular | 125197 | 🇺🇸 US 🇨🇦 CA | Full Synthetic 0W-20Mobil Full Synthetic | View on Amazon |
| MOBIL Popular | 125386 | 🇺🇸 US 🇨🇦 CA | ESP X2 0W-20ESP X2 Full Synthetic Motor Oil 0W-20, 1 Quart | View on Amazon |
| VALVOLINE Popular | VV916 | 🇺🇸 US 🇨🇦 CA | Advanced Protection Full Synthetic SAE 0W-201 Quart | View on Amazon |
| MOBIL | 120926 | 🇺🇸 US 🇨🇦 CA | Extended Performance 0W-20Mobil 1 Extended Performance | View on Amazon |
| PENTOSIN | 8044210 | 🇺🇸 US 🇨🇦 CA | 0W-20-Pentospeed-DEXOS1 GEN31 Liter | View on Amazon |
| PENTOSIN | 8044317 | 🇺🇸 US 🇨🇦 CA | Pento Speed FESAE 0W-20 | View on Amazon |
| PENTOSIN | 8044212 | 🇺🇸 US 🇨🇦 CA | 0W-20-Pentospeed-DEXOS1 GEN35 Liters | View on Amazon |
| PENTOSIN | 8044319 | 🇺🇸 US 🇨🇦 CA | Pento Speed FESAE 0W-20 | View on Amazon |
| VALVOLINE | 891682 | 🇺🇸 US 🇨🇦 CA | Extended Protection Full Synthetic SAE 0W-201 Quart | View on Amazon |
| VALVOLINE | 904536 | 🇺🇸 US 🇨🇦 CA | Restore & Protect Full Synthetic SAE 0W-201 Quart | View on Amazon |
| VALVOLINE | 904538 | 🇺🇸 US 🇨🇦 CA | Restore & Protect Full Synthetic SAE 0W-205 Quart | View on Amazon |
| VALVOLINE | 881150 | 🇺🇸 US 🇨🇦 CA | Advanced Protection Full Synthetic SAE 0W-20Easy Pour 5 Quart | View on Amazon |
| VALVOLINE | 898664 | 🇺🇸 US 🇨🇦 CA | Hybrid Vehicle Full Synthetic SAE 0W-205 Quart | View on Amazon |
High Mileage (>75,000 Miles)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL Popular | 125203 | 🇺🇸 US 🇨🇦 CA | Full Synthetic High Mileage 0W-20Mobil Full Synthetic | View on Amazon |
| MOBIL | 122535 | 🇺🇸 US 🇨🇦 CA | High Mileage 0W-20Mobil 1 High Mileage | View on Amazon |
| MOBIL | 123836 | 🇺🇸 US 🇨🇦 CA | Extended Performance High Mileage 0W-20Extended Performance High Mileage Synthetic Motor Oil 0W-20, 1 Quart | View on Amazon |
| VALVOLINE | 852400 | 🇺🇸 US 🇨🇦 CA | Full Synthetic High Mileage with Max Life Technology SAE 0W-201 Quart | View on Amazon |
| VALVOLINE | 833002 | 🇺🇸 US 🇨🇦 CA | Max Life High Mileage SAE 0W-201 Quart | View on Amazon |
| VALVOLINE | 881149 | 🇺🇸 US 🇨🇦 CA | Max Life High Mileage SAE 0W-20Easy Pour 5 Quart | View on Amazon |
| VALVOLINE | 881168 | 🇺🇸 US 🇨🇦 CA | Full Synthetic High Mileage with Max Life Technology SAE 0W-20Easy Pour 5 Quart | 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.
21 Oil parts for the 2026 Nissan Altima come from 3 brands — VALVOLINE, MOBIL and PENTOSIN. The "Popular" part is MOBIL 124184.
The Full Synthetic section lists 14 options from VALVOLINE, MOBIL and PENTOSIN — full-synthetic oils. MOBIL 124184 is listed in this group.
In the High Mileage (>75,000 Miles) grade, VALVOLINE and MOBIL supply 7 parts: oils grouped for high-mileage engines. A representative part number is MOBIL 125203.
Oil Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FVP | R1358 | 🇺🇸 US | View on Amazon | |
| PRO-TEC | PXL51358 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
High Performance / Heavy Duty
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| MOBIL Popular | M1108A | 🇺🇸 US | Extended Performance | View on Amazon |
| WIX | 51358XP | 🇺🇸 US 🇨🇦 CA | XP Extreme DutyBest for Synthetic Motor Oils | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WIX | 51358 | 🇺🇸 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.
5 Oil Filter parts for the 2026 Nissan Altima come from 4 brands — WIX, FVP, PRO-TEC and 1 other brand. The "Popular" part is MOBIL M1108A.
The Economy section lists 2 options from FVP and PRO-TEC — the catalog's value-priced group. FVP R1358 is listed in this group.
The High Performance / Heavy Duty section lists 2 options from MOBIL and WIX — grouped under the catalog's "High Performance / Heavy Duty" designation — the notes column spells out what sets them apart. MOBIL M1108A is listed in this group.
In the Standard Replacement grade, WIX supplies 1 part: built to original-equipment specification. A representative part number is WIX 51358.
This group includes MOBIL M1108A, FVP R1358 and PRO-TEC PXL51358 and the remaining parts above.
Buying Engine Parts for a 2026 Nissan Altima
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 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 Nissan Altima?
Our catalog currently lists 27 engine parts for the 2026 Nissan Altima across 3 subcategories and 7 brands, covering the 2.5L L4 engine. Each part is matched to the engine(s) it fits.
What are the signs of engine problems on a 2026 Nissan Altima?
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 Nissan Altima?
Oil rows on this page include SAE 0W-20. 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 Nissan Altima 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 Nissan Altima?
Every part on this page is matched to the 2.5L L4 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 Nissan Altima
Engine Parts for Other Nissan Altima 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.