This page lists 23 engine parts for the 2023 International LT, across 6 part types, covering all 3 engine options (12.4L L6 DIESEL Turbocharged, 12.7L L6 DIESEL Turbocharged and 14.9L L6 DIESEL Turbocharged). Every part shows its brand, manufacturer part number and fitment notes.
The engine on the 2023 International LT 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 Filter (9 parts), Oil (5 parts) and Oil Pan (3 parts). The other 3 part types cover the remaining 6 parts.
The 2023 International LT 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 2023 International LT engine parts are VALVOLINE (5 parts), GPD (4 parts) and HASTINGS / BALDWIN (3 parts), plus 5 more brands. Quality grades include Standard Replacement, Economy and Heavy Duty / Diesel.
Each part number listed for the 2023 International LT opens a page with every vehicle that part fits.
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: 14.9L L6 DIESEL Turbocharged | 909772 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Heavy Duty Full Synthetic SAE 15W-40 DIESEL1 Gallon | View on Amazon |
Heavy Duty / Diesel
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: 14.9L L6 DIESEL Turbocharged | 909778 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Heavy Duty Conventional SAE 15W-40 DIESEL1 Gallon | View on Amazon |
Synthetic Blend
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VALVOLINE Fits: 14.9L L6 DIESEL Turbocharged | 909766 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Heavy Duty Synthetic Blend SAE 15W-40 DIESEL1 Gallon | View on Amazon |
| VALVOLINE Fits: 14.9L L6 DIESEL Turbocharged | 909776 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Heavy Duty Synthetic Blend SAE 10W-30 DIESEL1 Gallon | View on Amazon |
| VALVOLINE Fits: 14.9L L6 DIESEL Turbocharged | 909782 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | 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 2023 International LT.
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.
This group includes VALVOLINE 909772, VALVOLINE 909778 and VALVOLINE 909766 and the remaining parts above.
Oil Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FAMOUS BRAND Fits: 12.4L L6 DIESEL Turbocharged | 84306 | 🇺🇸 US 🇨🇦 CA | LubeOE Number : 3015784C2 | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DONALDSON Fits: 12.4L L6 DIESEL Turbocharged | P551088 | 🇺🇸 US 🇨🇦 CA | CartridgeOuter Diameter: 120 mm (4.72") | View on Amazon |
| HASTINGS / BALDWIN Fits: 12.4L L6 DIESEL Turbocharged | LF672 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WIX Fits: 12.4L L6 DIESEL Turbocharged | WL10047 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DONALDSON Fits: 14.9L L6 DIESEL Turbocharged | DBL7900 | 🇲🇽 MX | Spin-On Full Flow | View on Amazon |
| HASTINGS / BALDWIN Fits: 12.7L L6 DIESEL Turbocharged | LOPRI | 🇺🇸 US | View on Amazon | |
| HASTINGS / BALDWIN Fits: 14.9L L6 DIESEL Turbocharged | B40145 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WIX Fits: 12.7L L6 DIESEL Turbocharged | WL10047 | 🇺🇸 US | View on Amazon | |
| WIX Fits: 14.9L L6 DIESEL Turbocharged | WL11097 | 🇺🇸 US 🇨🇦 CA | Spin-On 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.
9 Oil Filter parts are listed for the 2023 International LT, from HASTINGS / BALDWIN, WIX, DONALDSON and 1 other brand.
In the Economy grade, FAMOUS BRAND supplies 1 part: the catalog's value-priced group. A representative part number is FAMOUS BRAND 84306.
The Standard Replacement section lists 3 options from DONALDSON, HASTINGS / BALDWIN and WIX — built to original-equipment specification. DONALDSON P551088 is listed in this group.
5 ungrouped parts are not assigned to a grade, with the same engine-level match.
Listed part numbers: FAMOUS BRAND 84306, DONALDSON P551088 and HASTINGS / BALDWIN LF672, plus the other parts above.
Oil Pan
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 14.9L L6 DIESEL Turbocharged | 2645606 | 🇲🇽 MX | Front Sump20qt. Capacity | View on Amazon |
| SPECTRA PREMIUM Fits: 14.9L L6 DIESEL Turbocharged | CMP09A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front SumpEPA 13 | View on Amazon |
| SPECTRA PREMIUM Fits: 14.9L L6 DIESEL Turbocharged | CMP08A | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Front SumpEPA 17 | View on Amazon |
This table covers the oil pans that hold the engine's oil sump.
3 Oil Pan parts for the 2023 International LT come from 2 brands — SPECTRA PREMIUM and DORMAN.
Listed part numbers: DORMAN 2645606, SPECTRA PREMIUM CMP09A and SPECTRA PREMIUM CMP08A.
Oil Pan Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 14.9L L6 DIESEL Turbocharged | 2646005G | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon |
This table covers the gaskets between the oil pan and the block. 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.
One part is listed for the 2023 International LT — DORMAN 2646005G.
Turbocharger
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| GPD Fits: 14.9L L6 DIESEL Turbocharged | 2512005 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| GPD Fits: 14.9L L6 DIESEL Turbocharged | 2512006 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | View on Amazon | |
| GPD Fits: 14.9L L6 DIESEL Turbocharged | 2513060 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | with Electronic Actuator | View on Amazon |
This table covers the turbochargers that compress intake air.
GPD supplies the 3 Turbocharger parts for the 2023 International LT.
This group includes GPD 2512005, GPD 2512006 and GPD 2513060.
Turbocharger Gasket
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| DORMAN Fits: 14.9L L6 DIESEL Turbocharged | 6745001G | 🇺🇸 US 🇨🇦 CA | Mounting Gasket | View on Amazon |
| GPD Fits: 14.9L L6 DIESEL Turbocharged | 2535108 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Only Fits Compatible Aftermarket Turbochargers | 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.
2 Turbocharger Gasket parts for the 2023 International LT come from 2 brands — DORMAN and GPD.
Part numbers include DORMAN 6745001G and GPD 2535108.
Buying Engine Parts for a 2023 International LT
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: Oil Filter and Oil .
Frequently Asked Questions
How many engine parts fit the 2023 International LT?
Our catalog currently lists 23 engine parts for the 2023 International LT across 6 subcategories and 8 brands, covering all 3 engine options (12.4L L6 DIESEL Turbocharged, 12.7L L6 DIESEL Turbocharged and 14.9L L6 DIESEL Turbocharged). Each part is matched to the engine(s) it fits.
Do engine parts differ between 2023 International LT 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 2023 International LT?
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 2023 International LT?
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 2023 International LT 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 2023 International LT?
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 2023 International LT
Engine Parts for Other International LT 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.