The 2020 International Workstar has 14 engine parts with verified fitment on this page — 7 part types and 6 brands, covering both the 6.7L L6 DIESEL Turbocharged and the 8.9L L6 DIESEL Turbocharged. Each part includes a manufacturer part number and application notes.
The engine on the 2020 International Workstar covers the internals and hard parts that build compression and keep oil where it belongs — gaskets, bearings, camshafts, lifters, seals and timing components. The largest groups are Oil (5 parts), Oil Filter (2 parts) and Oil Pan (2 parts). The other 4 part types cover the remaining 5 parts.
The 2020 International Workstar was sold with both the 6.7L L6 DIESEL Turbocharged and the 8.9L L6 DIESEL Turbocharged. 1 part fits every engine; the other 13 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2020 International Workstar engine parts are VALVOLINE (5 parts), DORMAN (3 parts) and SPECTRA PREMIUM (2 parts), plus 3 more brands.
Each part number listed for the 2020 International Workstar 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 2020 International Workstar — DORMAN 9047119.
Oil
Summary: Notes list SAE 10W-30 and SAE 15W-40. Confirm the engine and the weight on the filler cap before you buy. Replacement brands in this table include VALVOLINE.
Full Synthetic
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: 8.9L L6 DIESEL Turbocharged | 909772 | 🇺🇸 US 🇨🇦 CA | Heavy Duty Full Synthetic SAE 15W-40 DIESEL1 Gallon | View on Amazon |
Heavy Duty / Diesel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: 8.9L L6 DIESEL Turbocharged | 909778 | 🇺🇸 US 🇨🇦 CA | Heavy Duty Conventional SAE 15W-40 DIESEL1 Gallon | View on Amazon |
Synthetic Blend
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: 8.9L L6 DIESEL Turbocharged | 909766 | 🇺🇸 US 🇨🇦 CA | Heavy Duty Synthetic Blend SAE 15W-40 DIESEL1 Gallon | View on Amazon |
| VALVOLINE Fits: 8.9L L6 DIESEL Turbocharged | 909776 | 🇺🇸 US 🇨🇦 CA | Heavy Duty Synthetic Blend SAE 10W-30 DIESEL1 Gallon | View on Amazon |
| VALVOLINE Fits: 8.9L L6 DIESEL Turbocharged | 909782 | 🇺🇸 US 🇨🇦 CA | Heavy Duty Synthetic Blend SAE 15W-40 DIESEL2.5 Gallon | 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.
VALVOLINE supplies the 5 Oil parts for the 2020 International Workstar.
In the Full Synthetic grade, VALVOLINE supplies 1 part: full-synthetic oils. A representative part number is VALVOLINE 909772.
In the Heavy Duty / Diesel grade, VALVOLINE supplies 1 part: grouped under the catalog's "Heavy Duty / Diesel" designation — the notes column spells out what sets them apart. A representative part number is VALVOLINE 909778.
In the Synthetic Blend grade, VALVOLINE supplies 3 parts: synthetic-blend oils. A representative part number is VALVOLINE 909766.
Part numbers include VALVOLINE 909772, VALVOLINE 909778 and VALVOLINE 909766, among others listed above.
Oil Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HASTINGS / BALDWIN Fits: 6.7L L6 DIESEL Turbocharged | LF551 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WIX Fits: all 2020 Workstar engines | 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.
2 Oil Filter parts are listed for the 2020 International Workstar, from HASTINGS / BALDWIN and WIX. 1 part fits every engine; the other 1 is engine-specific.
This group includes HASTINGS / BALDWIN LF551 and WIX 57182.
Oil Pan
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| SPECTRA PREMIUM Fits: 6.7L L6 DIESEL Turbocharged | CMP06A | 🇺🇸 US 🇨🇦 CA | Front SumpEPA 17 | View on Amazon |
| SPECTRA PREMIUM Fits: 6.7L L6 DIESEL Turbocharged | CMP10A | 🇺🇸 US 🇨🇦 CA | Fits Front SumpGasket and/or Sealant Not Included | View on Amazon |
This table covers the oil pans that hold the engine's oil sump.
2 Oil Pan parts for the 2020 International Workstar come from SPECTRA PREMIUM.
This group includes SPECTRA PREMIUM CMP06A and SPECTRA PREMIUM CMP10A.
Turbocharger
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 6.7L L6 DIESEL Turbocharged | 2511887 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| GPD Fits: 8.9L L6 DIESEL Turbocharged | 2511891 | 🇺🇸 US 🇨🇦 CA | Cummins ISL 8.9 | View on Amazon |
This table covers the turbochargers that compress intake air.
GPD supplies both parts for the 2020 International Workstar.
This group includes GPD 2511887 and GPD 2511891.
Turbocharger Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 8.9L L6 DIESEL Turbocharged | 6749049 | 🇺🇸 US 🇨🇦 CA | Exhaust Outlet Elbow | View on Amazon |
This table covers the gaskets that seal the Turbocharger. Typical signs include seepage at the joint, a burnt-oil smell, or a leak that appears only after a long drive. Clean both flanges and torque in the sequence the notes or the manual call for.
This group shows a single part: DORMAN 6749049.
Turbocharger Speed Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 6.7L L6 DIESEL Turbocharged | 9047146 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
This table covers the Turbocharger speed sensors. Typical signs include a dead speedometer, harsh transmission shifts, or a code for vehicle speed. Inspect the tone wheel and the connector before replacing the sensor.
This group shows a single part: DORMAN 9047146.
Buying Engine Parts for a 2020 International Workstar
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. Some engine parts fit every engine; others are 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: Oil and Oil Filter .
Frequently Asked Questions
How many engine parts fit the 2020 International Workstar?
Our catalog currently lists 14 engine parts for the 2020 International Workstar across 7 subcategories and 6 brands, covering both the 6.7L L6 DIESEL Turbocharged and the 8.9L L6 DIESEL Turbocharged. Each part is matched to the engine(s) it fits.
Do engine parts differ between 2020 International Workstar engines?
Some do. 1 part fits every engine; the other 13 are engine-specific. Each row (and the filter at the top) shows which. 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 2020 International Workstar?
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 2020 International Workstar?
Oil rows on this page include SAE 10W-30 and SAE 15W-40. 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 2020 International Workstar 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 2020 International Workstar?
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 2020 International Workstar
Engine Parts for Other International Workstar 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.