The 2012 Isuzu NPR has 24 electrical parts with verified fitment on this page — 4 part types and 8 brands, covering all 3 engine options (3.0L L4 DIESEL Turbocharged, 5.2L L4 DIESEL Turbocharged and 6.0L V8). Each part includes a manufacturer part number and application notes.
On the 2012 Isuzu NPR, the electrical system covers charging, starting and the sensors and modules the vehicle relies on, from alternator and starter to oxygen sensors. Most of the listed parts are Starter Motor (9 parts), Alternator / Generator (8 parts) and Battery (6 parts). The other 1 part type covers the remaining 1 part.
The 2012 Isuzu NPR was sold with 3 engines. 5 parts fit every engine; the other 19 are engine-specific. Each part shows which engine(s) it fits.
The most listed brands for 2012 Isuzu NPR electrical parts are TERREPOWER (9 parts), WAI GLOBAL (8 parts) and EXIDE (2 parts), plus 5 more brands. Quality grades include New, Remanufactured and AGM.
5 parts on this 2012 Isuzu NPR page carry a "Popular" badge — the source catalog's flag for options frequently chosen for this vehicle — including WAI GLOBAL 8550N (Alternator / Generator) and ACDELCO 31XAGMT (Battery). Click any part number to see every vehicle that part fits.
Alternator / Generator
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL Popular Fits: 6.0L V8 | 8550N | 🇺🇸 US 🇨🇦 CA | with Delco DR44 145 Amp or DR37 145 AmpSupplied as DR37 145 Amp | View on Amazon |
| TERREPOWER Fits: 3.0L L4 DIESEL Turbocharged, 5.2L L4 DIESEL Turbocharged | 90251238N | 🇺🇸 US 🇨🇦 CA | Hitachi Unit110 Amps | View on Amazon |
| TERREPOWER Fits: 6.0L V8 | 90014706N | 🇺🇸 US 🇨🇦 CA | GasNPR-HD | View on Amazon |
| WAI GLOBAL Fits: 6.0L V8 | 8292N | 🇺🇸 US 🇨🇦 CA | 4 pin connector | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TERREPOWER Popular Fits: 6.0L V8 | 90014704 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 3.0L L4 DIESEL Turbocharged, 5.2L L4 DIESEL Turbocharged | 90251238 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 6.0L V8 | 90014706 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| WAI GLOBAL Fits: 6.0L V8 | 8292R | 🇺🇸 US 🇨🇦 CA | Power Select Reman | 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.
8 Alternator / Generator parts are listed for the 2012 Isuzu NPR, from TERREPOWER and WAI GLOBAL. WAI GLOBAL 8550N carries the "Popular" badge.
In the New grade, WAI GLOBAL and TERREPOWER supply 4 parts: brand-new units rather than rebuilt ones. A representative part number is WAI GLOBAL 8550N.
In the Remanufactured grade, TERREPOWER and WAI GLOBAL supply 4 parts: factory-rebuilt units with new wear components. A representative part number is TERREPOWER 90014704.
This group includes WAI GLOBAL 8550N, TERREPOWER 90251238N and TERREPOWER 90014706N and the remaining parts above.
Battery
AGM (Extended Life)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| ACDELCO Popular Fits: all 2012 NPR engines | 31XAGMT | 🇺🇸 US 🇨🇦 CA | AGMBCI Group: 31 | View on Amazon |
| FVP Popular Fits: all 2012 NPR engines | P31TAGM | 🇺🇸 US 🇨🇦 CA | Platinum AGMBCI Group: 31T | View on Amazon |
| EXIDE Fits: 3.0L L4 DIESEL Turbocharged, 6.0L V8 | RF31D | 🇺🇸 US 🇨🇦 CA | RoadforceBCI Group 31 | View on Amazon |
| EXIDE Fits: all 2012 NPR engines | XRF31D | 🇺🇸 US 🇨🇦 CA | RoadforceBCI Group 31 | View on Amazon |
| MOTORCRAFT Fits: all 2012 NPR engines | BHAGM31 | 🇺🇸 US 🇨🇦 CA | Fleettough/ExtraBCI Group: 31 | View on Amazon |
Performance AGM (Extended Life + Increased Power)
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| FULLRIVER Fits: all 2012 NPR engines | 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 2012 Isuzu NPR come from 5 brands — EXIDE, ACDELCO, FVP and 2 other brands. The "Popular" part is ACDELCO 31XAGMT. 5 parts fit every engine; the other 1 is engine-specific.
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.
Speed Sensor
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| STANDARD MOTOR PRODUCTS Fits: 5.2L L4 DIESEL Turbocharged, 6.0L V8 | SC303 | 🇺🇸 US 🇨🇦 CA | Transmission SpeedOutput | View on Amazon |
This table covers the speed sensors on the transmission, transfer case or ABS ring. Typical signs include a dead speedometer, harsh transmission shifts, or a code for vehicle speed. Inspect the tone wheel and the connector before replacing the sensor.
This group shows a single part: STANDARD MOTOR PRODUCTS SC303.
Starter Motor
New
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| WAI GLOBAL Popular Fits: 6.0L V8 | 6942N | 🇺🇸 US 🇨🇦 CA | Fits NPR-HD | View on Amazon |
| TERREPOWER Fits: 6.0L V8 | 91014696N | 🇺🇸 US 🇨🇦 CA | GasNPR-HD | View on Amazon |
| WAI GLOBAL Fits: 3.0L L4 DIESEL Turbocharged, 6.0L V8 | 19763N | 🇺🇸 US 🇨🇦 CA | Fits 190HP5193cc | View on Amazon |
| WAI GLOBAL Fits: 5.2L L4 DIESEL Turbocharged | 19201N | 🇺🇸 US 🇨🇦 CA | Automatic trans. | View on Amazon |
| WAI GLOBAL Fits: 5.2L L4 DIESEL Turbocharged | 30691N | 🇺🇸 US 🇨🇦 CA | Manual trans. | View on Amazon |
Remanufactured
| Brand | Part Number | Markets | Notes | Buy |
|---|---|---|---|---|
| TERREPOWER Fits: 3.0L L4 DIESEL Turbocharged | 91295899 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 5.2L L4 DIESEL Turbocharged | 91295914 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| TERREPOWER Fits: 6.0L V8 | 91014696 | 🇺🇸 US 🇨🇦 CA | Remanufactured | View on Amazon |
| WAI GLOBAL Fits: 6.0L V8 | 6942R | 🇺🇸 US 🇨🇦 CA | Power Select Reman | 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.
9 Starter Motor parts are listed for the 2012 Isuzu NPR, from WAI GLOBAL and TERREPOWER. WAI GLOBAL 6942N carries the "Popular" badge.
New: 5 parts, from WAI GLOBAL and TERREPOWER. A representative part number is WAI GLOBAL 6942N.
Remanufactured: 4 parts, from TERREPOWER and WAI GLOBAL. A representative part number is TERREPOWER 91295899.
Listed part numbers: WAI GLOBAL 6942N, TERREPOWER 91014696N and WAI GLOBAL 19763N, plus the other parts above.
Buying Electrical Parts for a 2012 Isuzu NPR
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. Some electrical parts fit every engine; others are 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: Starter Motor and Alternator / Generator .
Frequently Asked Questions
How many electrical parts fit the 2012 Isuzu NPR?
Our catalog currently lists 24 electrical parts for the 2012 Isuzu NPR across 4 subcategories and 8 brands, covering all 3 engine options (3.0L L4 DIESEL Turbocharged, 5.2L L4 DIESEL Turbocharged and 6.0L V8). Each part is matched to the engine(s) it fits.
Do electrical parts differ between 2012 Isuzu NPR engines?
Some do. 5 parts fit every engine; the other 19 are engine-specific. Each row (and the filter at the top) shows which. 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 2012 Isuzu NPR?
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 2012 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 2012 Isuzu NPR?
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 2012 Isuzu NPR
Electrical Parts for Other Isuzu NPR 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.