Fitment-first matching
CF-21406N-A is prepared for alternator sourcing with Part No, OE, Lester number, and application records checked together.

Alternators
CF-21406N-A alternator for Case IH STX375, Case IH STX375QT, Case IH STX425 and related applications (12V / 120A).
| Voltage | 12V |
|---|---|
| Amperage | 120A |
| Rotation | CW |
| Regulator/Fan | IR/IF |
| Part No | CF-21406N-A |
|---|---|
| MFR | DELCO |
| Lester Numbers | 21406 |
| OE Numbers | Caterpillar 20R3599, 321-8928, 560-6102, Delco 8600376 |
| Part Type | Alternator |
| Design | IR/IF |
Alternator matching focuses on amperage, voltage, pulley configuration, regulator/fan design, plugs, and OE replacement references.
CF-21406N-A is prepared for alternator sourcing with Part No, OE, Lester number, and application records checked together.
Core specifications such as voltage, power or amperage, rotation, teeth, and design are reviewed before sample or bulk quotation.
MFR DELCO and replacement references including 21406 help buyers compare existing units and reduce wrong-part risk.
Share target quantity, destination, sample need, and packaging requirement so Crankvia can confirm the practical supply path.
Application records are provided as compatibility references. Confirm OE number, vehicle configuration, engine, and market version before final ordering.
Application reference
CF-21406N-A
Records
69
Makes
2
Models
31
Year range
2000-2025
| Make | Model | Year | Engine | Note |
|---|---|---|---|---|
| Case IH | STX375 | 2000-2007 | L6 15.0L - 912cid Cummins QSX15 | - |
| Case IH | STX375 | 2000-2007 | L6 15.0L - 912cid QSX15 | - |
| Case IH | STX375QT | 2000-2007 | L6 15.0L - 912cid Cummins QSX15 | - |
| Case IH | STX375QT | 2000-2007 | L6 15.0L - 912cid QSX15 | - |
| Case IH | STX425 | 2000-2007 | L6 15.0L - 912cid Cummins QSX15 | - |
| Case IH | STX425 | 2000-2007 | L6 15.0L - 912cid QSX15 | - |
| Case IH | STX425QT | 2000-2007 | L6 15.0L - 912cid Cummins QSX15 | - |
| Case IH | STX425QT | 2000-2007 | L6 15.0L - 912cid QSX15 | - |
| Case IH | STX450 | 2000-2007 | L6 15.0L - 912cid Cummins QSX15 | - |
| Case IH | STX450 | 2000-2007 | L6 15.0L - 912cid QSX15 | - |
| Case IH | STX450QT | 2000-2007 | L6 15.0L - 912cid Cummins QSX15 | - |
| Case IH | STX450QT | 2000-2007 | L6 15.0L - 912cid QSX15 | - |
| Caterpillar | 910M | 2016-2020 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | 910M | 2016-2020 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | 914M | 2016-2020 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | 914M | 2016-2020 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | 918M | 2016-2020 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | 918M | 2016-2020 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | CB44B | 2012-2021 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | CB44B | 2012-2021 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | CB54B | 2012-2021 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | CB54B | 2012-2021 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | CW16 | 2015-2022 | L4 3.4L 208cid C3.4B | - |
| Caterpillar | CW16 | 2015-2022 | L4 3.4L 208cid CaterpiLLar C3.4B | - |
| Caterpillar | CW16 | 2015-2022 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | D3K 2 | 2012-2018 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | D3K 2 | 2012-2018 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | D3K2 LGP | 2012-2023 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | D3K2 LGP | 2012-2023 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | D3K2 XL | 2012-2023 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | D3K2 XL | 2012-2023 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | D4 | 2020-2022 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | D4 | 2020-2022 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | D4K2 LGP | 2012-2020 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | D4K2 LGP | 2012-2020 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | D4K2 XL LGP | 2012-2020 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | D4K2 XL LGP | 2012-2020 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | D4K2 XL | 2012-2020 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | D4K2 XL | 2012-2020 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | D5K2 LGP | 2012-2019 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | D5K2 LGP | 2012-2019 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | D5K2 XL LGP | 2012-2019 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | D5K2 XL LGP | 2012-2019 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | D5K2 XL | 2012-2019 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | D5K2 XL | 2012-2019 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | TH336C | 2012-2017 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | TH336C | 2012-2017 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | TH3510D | 2016-2024 | L4 3.4L 208cid C3.4B | - |
| Caterpillar | TH3510D | 2016-2024 | L4 3.4L 208cid CaterpiLLar C3.4B | - |
| Caterpillar | TH3510D | 2016-2024 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | TH357D | 2017-2024 | L4 3.4L 208cid C3.4 | - |
| Caterpillar | TH357D | 2017-2024 | L4 3.4L 208cid CaterpiLLar C3.4 | - |
| Caterpillar | TH357D | 2017-2024 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | TH408D | 2017-2025 | L4 3.4L 208cid C3.4 | - |
| Caterpillar | TH408D | 2017-2025 | L4 3.4L 208cid CaterpiLLar C3.4 | - |
| Caterpillar | TH408D | 2017-2025 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | TH514D | 2016-2025 | L4 3.4L 208cid C3.4B | - |
| Caterpillar | TH514D | 2016-2025 | L4 3.4L 208cid CaterpiLLar C3.4B | - |
| Caterpillar | TH514D | 2016-2025 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | TL1055D | 2015-2025 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | TL1055D | 2015-2025 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | TL1255D | 2015-2024 | L4 4.4L 269cid C4.4 | - |
| Caterpillar | TL1255D | 2015-2024 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | TL642D | 2015-2024 | L4 3.4L 208cid C3.4B | - |
| Caterpillar | TL642D | 2015-2024 | L4 3.4L 208cid CaterpiLLar C3.4B | - |
| Caterpillar | TL642D | 2015-2024 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
| Caterpillar | TL943D | 2015-2024 | L4 3.4L 208cid C3.4B | - |
| Caterpillar | TL943D | 2015-2024 | L4 3.4L 208cid CaterpiLLar C3.4B | - |
| Caterpillar | TL943D | 2015-2024 | L4 4.4L 269cid CaterpiLLar C4.4 | - |
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