High Output Alternator for Porsche 944 (1985-1989) 2.5L
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High-Output 115-Amp Alternator for 1985-1989 Porsche 944 (Typ 944)
What it Does: The High Output 115-Amp Alternator replaces the aging factory charging unit on the 1985-1989 Porsche 944 to eliminate voltage drop and reliably support upgraded electrical loads.
The Stock Porsche 944 Charging System Limitations
The original Bosch charging systems fitted to the Typ 944 chassis struggle with thermal degradation and low idle current output. Factory units, typically rated at 90 amps or less, suffer from diode pack breakdown and worn slip rings after decades of heat soak in the compact engine bay. This results in dimming dash clusters, lazy electric fan engagement, weak ignition coil saturation, and chronic battery undercharging on M44 platforms running modern auxiliary loads or audio equipment.
The Engineering Solution
Engineered as a heavy-duty, bolt-on replacement, this 115-amp alternator provides sustained current stability across the entire RPM range. Built with high-purity copper stator windings, an uprated avalanche diode rectifier, and a precision solid-state regulator, it maintains a steady 14.2 to 14.6-volt output under heavy electrical draw. Each unit features dynamically balanced rotors and heavy-duty double-sealed bearings to resist high-rev bearing fatigue and minimize mechanical drag, ensuring seamless integration with the factory tensioner brackets.
What's Included
- 1x 115-Amp High Output Alternator
Technical Specifications
| Fitment | 1985-1989 Porsche 944 |
|---|---|
| Engine / Chassis | M44 2.5L / Typ 944 |
| Stock Output | 150 hp / 151 lb-ft |
| Replaces OEM Part # | 0120468001, 0120468002, 0120468003, 14956, AL170X |
Compatibility
- 1985 Porsche 944 Base 2.5L
- 1986 Porsche 944 Base 2.5L
- 1987 Porsche 944 Base 2.5L
- 1988 Porsche 944 Base 2.5L
- 1989 Porsche 944 Base 2.5L
Frequently Asked Questions & Fitment Warnings
Does this fit the Typ 944 944?
Yes, this is a direct fit for the 1985-1989 Porsche 944 equipped with the M44 2.5L engine, directly replacing 0120468001, 0120468002, 0120468003, 14956, and AL170X.
Do I need to upgrade my battery cables for this 115-amp unit?
While this alternator utilizes the factory wiring terminals, inspecting and cleaning OEM ground straps is essential to support the increased 115-amp electrical current safely.
The Porsche Precision Standard
Vintage European performance machinery demands clean, unwavering electrical voltage to maintain stable DME sensor readings and eliminate phantom gauge flicker. This alternator restores consistent factory-grade charging stability for reliable road performance.
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