The 2021 Freightliner S2 has 2 engine parts with verified fitment on this page — 2 part types and 2 brands, covering all 3 engine options (6.7L L6 DIESEL Turbocharged, 8.0L V8 Turbocharged and 8.8L V8). Each part includes a manufacturer part number and application notes.
On the 2021 Freightliner S2, 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. All 2 listed parts are Crankcase Pressure Sensor (1 part) and Oil Filter (1 part).
The 2021 Freightliner S2 was sold with 3 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Freightliner S2 engine parts are DORMAN (1 part) and WIX (1 part).
Each part number listed for the 2021 Freightliner S2 opens a page with every vehicle that part fits.
Crankcase Pressure Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 9047119 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Crankcase pressure sensors. Typical signs include a check-engine light for MAP or fuel-rail pressure, or a limp mode under load. A vacuum leak or a clogged reference line will fake a bad pressure sensor.
One part is listed for the 2021 Freightliner S2 — DORMAN 9047119.
Oil Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WIX Fits: 8.0L V8 Turbocharged, 8.8L V8 | 57182 | 🇺🇸 US 🇨🇦 CA | Spin-On FilterSpin-On Lube Filter | 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.
One part is listed for the 2021 Freightliner S2 — WIX 57182.
Buying Engine Parts for a 2021 Freightliner S2
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.
- Match the engine first. Every engine part here is engine-specific; each row shows which engine(s) it fits.
- 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: Crankcase Pressure Sensor and Oil Filter .
Frequently Asked Questions
How many engine parts fit the 2021 Freightliner S2?
Our catalog currently lists 2 engine parts for the 2021 Freightliner S2 across 2 subcategories and 2 brands, covering all 3 engine options (6.7L L6 DIESEL Turbocharged, 8.0L V8 Turbocharged and 8.8L V8). Each part is matched to the engine(s) it fits.
Do engine parts differ between 2021 Freightliner S2 engines?
Yes. Every engine part on this page is engine-specific. Each row shows which engine(s) it fits — use the filter at the top to hide the rest. If you're unsure which engine you have, check the emissions label under the hood or the 8th character of your VIN.
What are the signs of engine problems on a 2021 Freightliner S2?
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 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 2021 Freightliner S2 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 Freightliner S2?
First match the engine — each row shows which engine(s) the part fits. 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 2021 Freightliner S2
Engine Parts for Other Freightliner S2 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.