5 Automatic transmission parts are listed for the 2021 Isuzu NPR, in 1 part type, covering both the 5.2L L4 DIESEL Turbocharged and the 6.6L V8. Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 Isuzu NPR, the automatic transmission covers the automatic gearbox and its supporting cast — filters, coolers, solenoids, mounts and torque-converter parts. Every listed part is a Filter.
The 2021 Isuzu NPR was sold with both the 5.2L L4 DIESEL Turbocharged and the 6.6L V8. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 Isuzu NPR automatic transmission parts are VARIOUS MFR (3 parts), HASTINGS / BALDWIN (1 part) and WIX (1 part). Quality grades include Economy and Standard Replacement.
Each part number listed for the 2021 Isuzu NPR opens a page with every vehicle that part fits.
Filter
Economy
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR Fits: 6.6L V8 | PT20022 | 🇺🇸 US 🇨🇦 CA | Standard | View on Amazon |
| VARIOUS MFR Fits: 6.6L V8 | PT20022X | 🇺🇸 US 🇨🇦 CA | Select | View on Amazon |
Standard Replacement
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| HASTINGS / BALDWIN Fits: 6.6L V8 | TF209 | 🇺🇸 US 🇨🇦 CA | View on Amazon | |
| WIX Fits: 6.6L V8 | 58369 | 🇺🇸 US 🇨🇦 CA | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| VARIOUS MFR Fits: 5.2L L4 DIESEL Turbocharged | HT80007 | 🇺🇸 US 🇨🇦 CA | Spin-on | 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.
5 Filter parts for the 2021 Isuzu NPR come from 3 brands — VARIOUS MFR, HASTINGS / BALDWIN and WIX.
The Economy section lists 2 options from VARIOUS MFR — the catalog's value-priced group. VARIOUS MFR PT20022 is listed in this group.
In the Standard Replacement grade, HASTINGS / BALDWIN and WIX supply 2 parts: built to original-equipment specification. A representative part number is HASTINGS / BALDWIN TF209.
1 further part sits outside the graded sections, with the same engine-level match.
Part numbers include VARIOUS MFR PT20022, VARIOUS MFR PT20022X and HASTINGS / BALDWIN TF209, among others listed above.
Buying Automatic Transmission Parts for a 2021 Isuzu NPR
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 .
Frequently Asked Questions
How many automatic transmission parts fit the 2021 Isuzu NPR?
Our catalog currently lists 5 automatic transmission parts for the 2021 Isuzu NPR across 1 subcategory and 3 brands, covering both the 5.2L L4 DIESEL Turbocharged and the 6.6L V8. Each part is matched to the engine(s) it fits.
Do automatic transmission parts differ between 2021 Isuzu NPR 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 Isuzu NPR?
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 Isuzu NPR 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 Isuzu NPR?
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 Isuzu NPR
Automatic Transmission Parts for Other Isuzu NPR Years
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