Alternator for Caterpillar 416B-442D Backhoe Loader & D4C 1992-2006 - 12V 55A
Alternator for Caterpillar 416B-442D Backhoe Loader & D4C 1992-2006 - 12V 55A
SKU:400-52093
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Alternator for Caterpillar Backhoe Loaders & 3054 Engines
12-Volt, 55 Amp, Internal Regulator, 2-Groove V Pulley 76 mm OD
This 12-volt, 55 amp alternator covers the Caterpillar backhoe loader range from the 416B through to the 442D, along with the D4C track tractor and the 908 wheel loader, on machines powered by the Cat 3054, 3054B and 3054C (Perkins) engines. It replaces Caterpillar 105-2811, 105-2812 and OR4327, and the Denso 101211-2240 and 101211-2310 units.
The unit uses an internal regulator and a 2-groove V pulley of 76 mm outside diameter, matching the original equipment layout so it drops straight in. Every unit is quality checked before dispatch, and our technical team is on hand if you need help confirming fitment.
Key Features
- 12-volt, 55 amp output to OEM specification
- Internal regulator (IR) design
- 2-groove V pulley, 76 mm outside diameter
- Covers the full Cat 3054 / 3054C powered backhoe loader range
- Direct replacement for Caterpillar 105-2811, 105-2812 and OR4327
- 12-month warranty as standard
Technical Specs
| Specification | Detail |
|---|---|
| Part Number | 400-52093 |
| Unit Type | Alternator |
| Voltage | 12 V |
| Output | 55 A |
| Regulator | Internal (IR) |
| Pulley | 2-groove V, 76 mm OD |
| Lester Number | 12346 |
| Condition | New aftermarket replacement |
Vehicle Fitment Guide
Years shown are the overall coverage span for this part. Please confirm against the OEM part number on your original unit before ordering.
| Make & Model | Years |
|---|---|
| Caterpillar 416B, 426B, 438B Backhoe Loader (Cat 3054) | 1992-1996 |
| Caterpillar 416C, 438C Backhoe Loader (Cat 3054) | 1996-2001 |
| Caterpillar 426C, 436C Backhoe Loader (Cat 3054) | 1996 onwards |
| Caterpillar 428C Backhoe Loader (Cat 3054) | 1996-2001 |
| Caterpillar 416D, 424D Backhoe Loader (Cat 3054, 3054B, 3054C) | 2001-2005 |
| Caterpillar 420D, 442D Backhoe Loader (Cat 3054) | 2001-2005 |
| Caterpillar 428D, 430D, 432D Backhoe Loader (Cat 3054, 3054C) | 2001-2005 |
| Caterpillar 438D Backhoe Loader (Cat 3054) | 2001-2003 |
| Caterpillar 428E, 430E Backhoe Loader (Cat 3054C) | 2006 onwards |
| Caterpillar D4C Track Tractor (Perkins engines) | 1993-1995 |
| Caterpillar 908 Wheel Loader (Cat 3054) | 1998-2003 |
OEM Part Number Cross Reference
Aftermarket replacement. OEM part numbers are listed for reference only.
| Part Number | Manufacturer / Brand |
|---|---|
| 105-2811, 105-2812, OR4327 | Caterpillar |
| 101211-2240, 101211-2310 | Denso |
| 9761219-224, 9761219-231 | Denso Reman |
| AND0526, ND101211-2240, ND101211-2310 | Arrowhead |
| 12346 | Lester |
Frequently Asked Questions
Will this alternator fit without modification?
Yes, on the machines listed above it is a direct, bolt-in replacement built to OEM specification - no modification is required.
How do I check this is the right part?
Compare the number on your original unit against the cross reference table - Caterpillar 105-2811, 105-2812 or OR4327, or Denso 101211-2240 / 101211-2310.
What output does this unit give?
12 volts at 55 amps, with an internal regulator and a 2-groove V pulley of 76 mm outside diameter.
How do I know my current alternator has failed?
Common signs include a dashboard warning light, dimming or flickering lights, a weak or dead battery despite recent charging, and slow engine cranking.
Can I confirm fitment before ordering?
Yes, our technical team can help confirm compatibility against your original part - just get in touch before you order.
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