This page lists 10 electrical parts for the 2018 International RH, across 3 part types, covering the 12.4L L6 DIESEL Turbocharged engine. Every part shows its brand, manufacturer part number and fitment notes.
On the 2018 International RH, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. All 10 listed parts are Battery (6 parts), Alternator / Generator (2 parts) and Starter Motor (2 parts).
Every part on this page is matched to the 12.4L L6 DIESEL Turbocharged — the only engine offered in the 2018 International RH.
The most listed brands for 2018 International RH electrical parts are WAI GLOBAL (3 parts), EXIDE (2 parts) and ACDELCO (1 part), plus 4 more brands. Quality grades include AGM, New and Performance AGM.
2 parts on this 2018 International RH 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 | 8614N | 🇺🇸 US 🇨🇦 CA | Does Not Include Pulley | View on Amazon |
| WAI GLOBAL | 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 2018 International RH.
Listed part numbers: WAI GLOBAL 8614N and WAI GLOBAL 8681N.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular | 31XAGMT | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 31 | View on Amazon |
| FVP Popular | P31TAGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 31T | View on Amazon |
| EXIDE | RF31D | 🇺🇸 US 🇨🇦 CA | RoadforceBCI Group 31 | View on Amazon |
| EXIDE | XRF31D | 🇺🇸 US 🇨🇦 CA | RoadforceBCI Group 31 | View on Amazon |
| MOTORCRAFT | BHAGM31 | 🇺🇸 US 🇨🇦 CA | Fleettough/ExtraBCI Group: 31 | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER | 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 |
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.
6 Battery parts for the 2018 International RH come from 5 brands — EXIDE, ACDELCO, FVP 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.
This group includes ACDELCO 31XAGMT, FVP P31TAGM and EXIDE RF31D and the remaining parts above.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL | 6907N | 🇺🇸 US 🇨🇦 CA | Optional ReplacementDelco 39MT Rotatable Drive End Frame | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TERREPOWER | 91273554 | 🇺🇸 US 🇨🇦 CA | Remanufactured | 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.
2 Starter Motor parts are listed for the 2018 International RH, from WAI GLOBAL and TERREPOWER.
In the New grade, WAI GLOBAL supplies 1 part: brand-new units rather than rebuilt ones. A representative part number is WAI GLOBAL 6907N.
In the Remanufactured grade, TERREPOWER supplies 1 part: factory-rebuilt units with new wear components. A representative part number is TERREPOWER 91273554.
This group includes WAI GLOBAL 6907N and TERREPOWER 91273554.
Buying Electrical Parts for a 2018 International RH
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.
- Confirm you have the 12.4L L6 DIESEL Turbocharged engine — every part on this page is matched to it.
- 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 2018 International RH?
Our catalog currently lists 10 electrical parts for the 2018 International RH across 3 subcategories and 7 brands, covering the 12.4L L6 DIESEL Turbocharged engine. Each part is matched to the engine(s) it fits.
What are the signs of electrical problems on a 2018 International RH?
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 2018 International RH 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 2018 International RH?
Every part on this page is matched to the 12.4L L6 DIESEL Turbocharged engine. 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 2018 International RH
Electrical Parts for Other International RH 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.