11 Electrical parts are listed for the 2021 International HV, in 3 part types, covering all 4 engine options (12.4L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged and 9.0L DIESEL Turbocharged). Each one has a brand, a manufacturer part number and notes that say where it fits.
On the 2021 International HV, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. All 11 listed parts are Battery (8 parts), Alternator / Generator (2 parts) and Starter Motor (1 part).
The 2021 International HV was sold with 4 engines. Every part on this page is engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2021 International HV electrical parts are WAI GLOBAL (3 parts), ACDELCO (2 parts) and EXIDE (2 parts), plus 3 more brands. Quality grades include AGM and Performance AGM.
2 parts on this 2021 International HV page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including ACDELCO 31XAGMT (Battery) and FVP P31TAGM (Battery). Click any part number to see every vehicle that part fits.
Alternator / Generator
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL Fits: 12.4L L6 DIESEL Turbocharged | 8614N | 🇺🇸 US 🇨🇦 CA | Does Not Include Pulley | View on Amazon |
| WAI GLOBAL Fits: 12.4L L6 DIESEL Turbocharged | 8681N | 🇺🇸 US 🇨🇦 CA | Does Not Include Pulley | View on Amazon |
This table covers the alternators that charge the battery and run the electrical load. Typical signs include dim lights at idle, a battery lamp, or a growl from the charging pulley. Load-test the battery and inspect the belt and grounds — a bad ground mimics a failed alternator.
WAI GLOBAL supplies both parts for the 2021 International HV.
Listed part numbers: WAI GLOBAL 8614N and WAI GLOBAL 8681N.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: 12.4L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged | 31XAGMT | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 31 | View on Amazon |
| FVP Popular Fits: 12.4L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged | P31TAGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 31T | View on Amazon |
| EXIDE Fits: 12.4L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged | RF31D | 🇺🇸 US 🇨🇦 CA | RoadforceBCI Group 31 | View on Amazon |
| EXIDE Fits: 12.4L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged | XRF31D | 🇺🇸 US 🇨🇦 CA | RoadforceBCI Group 31 | View on Amazon |
| MOTORCRAFT Fits: 12.4L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged | BHAGM31 | 🇺🇸 US 🇨🇦 CA | Fleettough/ExtraBCI Group: 31 | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER Fits: 12.4L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged | FT110031ST | 🇺🇸 US 🇨🇦 CA | BCI Group 31T(Length X Width X Height) 12.99 In x 6.81 In x 9.13 In | View on Amazon |
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Fits: 8.9L L6 DIESEL Turbocharged | 31XAGMT | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 31 | View on Amazon |
| MOTORCRAFT Fits: 8.9L L6 DIESEL Turbocharged | BHAGM31 | 🇺🇸 US 🇨🇦 CA | Fleettough/ExtraBCI Group: 31 | View on Amazon |
This table covers the batteries listed by group size and specification. Typical signs include slow cranking, a battery lamp, or a no-start after the vehicle sat overnight. Confirm group size and terminal layout in the notes. Clean the posts and the ground before condemning the battery.
8 Battery parts for the 2021 International HV come from 5 brands — ACDELCO, EXIDE, MOTORCRAFT and 2 other brands. The "Popular" part is ACDELCO 31XAGMT.
In the AGM (Extended Life) grade, EXIDE, ACDELCO, FVP and 1 other brand supply 5 parts: grouped under the catalog's "AGM (Extended Life)" designation — the notes column spells out what sets them apart. A representative part number is ACDELCO 31XAGMT.
In the Performance AGM (Extended Life + Increased Power) grade, FULLRIVER supplies 1 part: grouped under the catalog's "Performance AGM (Extended Life + Increased Power)" designation — the notes column spells out what sets them apart. A representative part number is FULLRIVER FT110031ST.
2 further parts sit outside the graded sections, with the same engine-level match.
Part numbers include ACDELCO 31XAGMT, FVP P31TAGM and EXIDE RF31D, among others listed above.
Starter Motor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL Fits: 12.4L L6 DIESEL Turbocharged | 6907N | 🇺🇸 US 🇨🇦 CA | Optional ReplacementDelco 39MT Rotatable Drive End Frame | View on Amazon |
This table covers the starter motors that crank the engine. Typical signs include no motion, a squeal, or a motor that only runs on one speed. Confirm power, ground and the control module before replacing the motor.
One part is listed for the 2021 International HV — WAI GLOBAL 6907N.
Buying Electrical Parts for a 2021 International HV
On this vehicle, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors.
- Match the engine first. Every electrical 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, clean or renew the battery terminals and grounds with any charging-system repair.
- Cross-reference the manufacturer part number against your old part or a service-manual listing.
Start with the largest groups on this page: Battery and Alternator / Generator .
Frequently Asked Questions
How many electrical parts fit the 2021 International HV?
Our catalog currently lists 11 electrical parts for the 2021 International HV across 3 subcategories and 6 brands, covering all 4 engine options (12.4L L6 DIESEL Turbocharged, 6.7L L6 DIESEL Turbocharged, 8.9L L6 DIESEL Turbocharged and 9.0L DIESEL Turbocharged). Each part is matched to the engine(s) it fits.
Do electrical parts differ between 2021 International HV engines?
Yes. Every electrical 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 electrical problems on a 2021 International HV?
Common symptoms include slow cranking on cold mornings, a battery light that flickers, dim lights at idle, or a check-engine code pointing at a sensor circuit. 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, clean or renew the battery terminals and grounds with any charging-system repair.
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 International HV 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 International HV?
First match the engine — each row shows which engine(s) the part fits. Then test before replacing — a failed alternator and a bad ground can look identical, and sensors are frequently condemned for wiring faults. The notes column carries position and trim qualifiers where they apply.
Other Parts for the 2021 International HV
Electrical Parts for Other International HV Years
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