The 2021 Freightliner Cascadia has 13 automatic transmission parts with verified fitment on this page — 2 part types and 4 brands, covering all 6 engine options (11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged and more). Each part includes a manufacturer part number and application notes.
The automatic transmission on the 2021 Freightliner Cascadia covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. All 13 listed parts are Filter (7 parts) and Transmission Fluid Additive (6 parts).
The 2021 Freightliner Cascadia was sold with 6 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Freightliner Cascadia automatic transmission parts are LUBEGARD (6 parts), DONALDSON (4 parts) and HASTINGS / BALDWIN (2 parts), plus 1 more brand.
4 parts on this 2021 Freightliner Cascadia page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including ACDELCO PF53 (Filter) and LUBEGARD 19610 (Transmission Fluid Additive). Click any part number to see every vehicle that part fits.
Filter
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 12.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | PF53 | 🇺🇸 US 🇨🇦 CA | Gold / Professional or Gold / Professional DurapackSpin-On | View on Amazon |
| HASTINGS / BALDWIN Popular Fits: 12.8L L6 DIESEL Turbocharged | HF1005 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Cartridge Filter | View on Amazon |
| DONALDSON Fits: 12.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | P550335 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Length: 86 mm (3.39")Outer Diameter: 76 mm (2.99") | View on Amazon |
| DONALDSON Fits: 12.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | P550222 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Hydraulic Filter, Spin-On | View on Amazon |
| DONALDSON Fits: 12.8L L6 DIESEL Turbocharged, 15.6L L6 DIESEL Turbocharged | P560971 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | KitLength: 151.6 mm (5.97") | View on Amazon |
| DONALDSON Fits: 15.6L L6 DIESEL Turbocharged | P560972 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | KitLength: 106.7 mm (4.20") | View on Amazon |
| HASTINGS / BALDWIN Fits: 12.8L L6 DIESEL Turbocharged | HF1006 | 🇺🇸 US 🇨🇦 CA 🇲🇽 MX | Cartridge Filter | View on Amazon |
This table covers the replacement filters for this application — the table heading and notes say which circuit. Typical signs include restricted flow — long cranking, weak airflow, or dirty fluid after a short interval. Seat the new filter so it cannot bypass, and use the grade the notes call for.
7 Filter parts for the 2021 Freightliner Cascadia come from 3 brands — DONALDSON, HASTINGS / BALDWIN and ACDELCO. The "Popular" part is ACDELCO PF53.
This group includes ACDELCO PF53, HASTINGS / BALDWIN HF1005 and DONALDSON P550335 and the remaining parts above.
Transmission Fluid Additive
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| LUBEGARD Popular Fits: 11.9L Turbocharged | 19610 | 🇲🇽 MX | Instant Shudder Fixx2 oz | View on Amazon |
| LUBEGARD Popular Fits: 11.9L Turbocharged | 60902 | 🇲🇽 MX | Automatic Transmission Fluid Protectant10 oz | View on Amazon |
| LUBEGARD Fits: 11.9L Turbocharged | 19689 | 🇲🇽 MX | Instant Shudder Fixx2 oz | View on Amazon |
| LUBEGARD Fits: 11.9L Turbocharged | 63010 | 🇲🇽 MX | Platinum Universal ATF Protectant10 oz | View on Amazon |
| LUBEGARD Fits: 11.9L Turbocharged | 63016 | 🇲🇽 MX | Platinum Universal ATF Protectant15 oz | View on Amazon |
| LUBEGARD Fits: 11.9L Turbocharged | 63032 | 🇲🇽 MX | Platinum Universal ATF Protectant32 oz | View on Amazon |
This table covers the conditioners and additives used with this transmission fluid.
6 Transmission Fluid Additive parts for the 2021 Freightliner Cascadia come from LUBEGARD. The "Popular" part is LUBEGARD 19610.
Part numbers include LUBEGARD 19610, LUBEGARD 60902 and LUBEGARD 19689, among others listed above.
Buying Automatic Transmission Parts for a 2021 Freightliner Cascadia
On this vehicle, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts.
- Match the engine first. Every automatic transmission 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 filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Filter and Transmission Fluid Additive .
Frequently Asked Questions
How many automatic transmission parts fit the 2021 Freightliner Cascadia?
Our catalog currently lists 13 automatic transmission parts for the 2021 Freightliner Cascadia across 2 subcategories and 4 brands, covering all 6 engine options (11.9L DIESEL, 11.9L Turbocharged, 12.8L L6 DIESEL Turbocharged, 14.8L L6 DIESEL Turbocharged and more). Each part is matched to the engine(s) it fits.
Do automatic transmission parts differ between 2021 Freightliner Cascadia engines?
Yes. Every automatic transmission 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 automatic transmission problems on a 2021 Freightliner Cascadia?
Common symptoms include delayed or harsh engagement, slipping under load, fluid that smells burnt, or shuddering at light throttle around 40 mph. 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 filter and pan gasket with every fluid service, and flush the cooler lines when replacing a failed unit.
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 Cascadia 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 Cascadia?
First match the engine — each row shows which engine(s) the part fits. Then use exactly the fluid specification in the notes — automatic transmissions are the least forgiving component on the vehicle about fluid choice. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 Freightliner Cascadia
Automatic Transmission Parts for Other Freightliner Cascadia Years
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