MAHLE Agricultural Alternator 14V 33A with Ø 80 mm Single Pulley for Fiat Agri, Ford, Lamborghini & Antonio Carraro - Part Number: 379IA0037

The MAHLE Original heavy-duty agricultural alternator (part number 379IA0037, OEM references AGN1037E, MG 123, MG123) is a premium OEM-grade 14 V / 33 A electrical charging unit engineered specifically for agricultural tractors, orchard units, and vineyard crawlers. Designed with a Form A housing, mounting angle d 33°, clockwise rotation (↻), and a quick-connect plug-in socket, it comes pre-assembled with an 80.0 mm single-groove V-belt pulley matched to 9.7 mm drive belts (pulley offset distance 49.0 mm, mounting bracket thickness 73.5 mm with a 10.2 mm pivot hole at 80.0 mm radius). Engineered to factory specifications, it serves as a direct drop-in replacement across extensive fleets of wheeled and crawler machines from Fiat Agri (Nastro d'Oro, Diamante, Series 46, 56, 66, 76, 80, 88, 90, 93, 94, L Series, and TK crawlers), Ford (Series 30 and 35), Lamborghini (Crono, Grand Prix, Formula, C Series, R Series), and Antonio Carraro (Pomareiro Vinhateiro).

Key Features & Engineering Advantages

• MAHLE Original OEM Quality: Manufactured to exacting original equipment tolerances by MAHLE / Letrika, ensuring high thermal resistance, heavy-duty internal copper windings, and rugged vibration tolerance.
• Accurate 73.5 mm Mounting Flange: Calibrated 73.5 mm lug width with a 10.2 mm mounting bore at an 80.0 mm radius guarantees direct bolt-on installation to original engine brackets without mechanical adaptation.
• Pre-Fitted Ø 80.0 mm V-Belt Pulley: Precision-balanced single V-groove pulley matched to standard 9.7 mm belts with a 49.0 mm axial offset, preventing drive slippage, belt squeal, and premature peripheral drive wear.
• Reliable 14V / 33A Charging Profile: Delivers continuous charging voltage tailored to 12V battery networks, maintaining consistent output for lighting, dashboard electronics, and auxiliary relays even at low idle RPMs.
• Sealed Quick-Connect Plug Socket: Push-in connector housing shields terminal contacts from moisture, airborne chaff, field dust, and oil vapor.
• Extensive Agricultural Compatibility: Direct fit for leading European and Italian tractor models across Fiat Agri, Ford/New Holland, Lamborghini Trattori, and Antonio Carraro.

Technical Specifications & Dimensions

Equipment Compatibility & Tractor Application Guide

Manufacturer	Series / Classification	Supported Tractor Models
Antonio Carraro	Pomareiro Vinhateiro	3100-4, 3300-4, 3400-4, 3500-4
Fiat Agri	Series 46 & Series 56	55-46, 60-46, 65-46, 55-56, 60-56, 70-56
	Series 66 (Standard & Vineyard)	45-66, 45-66 S, 50-66, 50-66 S, 55-66, 56-66 S, 60-66, 60-66 F, 60-66 S, 65-66, 65-66 S, 70-66, 70-66 F, 70-66 LP, 70-66 S, 80-66, 80-66 F, 80-66 S, 466, 566, 666, 766
	Series 70 & Series 76	470, 570, 670, 45-76 V, 55-76 F, 55-76 V, 60-76 F, 70-76 F, 70-76 LP, 70-76 V, 80-76 F
	Series 80	580, 680, 780, 880, 980, 1180, 1280, 1380, 1580
	Series 86 & Series 88	50-86 S V, 50-86 V, 62-86 F, 55-88, 60-88, 65-88, 70-88, 80-88
	Series 90	55-90, 60-90, 65-90, 70-90, 80-90, 85-90
	Series 93 & Series 94	60-93, 65-93, 72-93, 82-93, 88-93, 60-94, 65-94, 72-94, 82-94, 88-94
	Series 311 → 556	411, 412, 421, 446, 474, 511, 512, 556
	Series 355 → 955 (Crawlers)	455, 465, 505, 555, 565, 605, 655, 765, 855, 955
	Diamante & L Series	415, 615, L 60, L 65, L 75, L 85, L 95
	Nastro D'Oro Series	400, 420, 440, 450, 460, 480, 500, 540, 550, 600, 640, 650, 1000, 1300
	TK Crawler Series (F, M, V)	55-65 F/M/V, 55-75 F/M/V, 55-85 F/M/V, 60-65/M/V, 60-75/M/V, 60-85 F/V, 62-85/M, 70-65/M, 70-75/M, 72-85/M, 80-65, 80-75, 82-85, 85-55, 88-85
	Ford	Series 30 & Series 35	3230, 3830, 4030, 4230, 4430, 3435, 3935, 4135
	Lamborghini	Series 300, 500, 600, 700	345, 550, 600, 660, 674, 700, 774, 775
Series 900 & Series 1000		956-100, 1106, 1306, 1506, 1706
C Series (Crawlers)		C 352, C 503, C 554, C 583, C 603, C 653, C 664, C 674, C 683, C 684, C 754, C 784
Crono & Formula Series		Crono 554-50, Crono 564-60, Crono 574-70, Formula 105
Grand Prix Series		Grand Prix 674-70, Grand Prix 774-80, Grand Prix 874-90T
R 200, R 500, R 600 Series		R 235, R 550, R 573-60N, R 574-60N, R 613, R 653, R 660, R 683, R 684
R 700 & R 800 Series		R 714, R 724, R 784, R 854, R 874
R 900 & R 1000 Series		R 955, R 1056, R 1156, R 1256, R 1556

Installation Advice & Workshop Notes: Always disconnect the negative battery lead prior to installing the new alternator. Seat the unit onto the 73.5 mm engine bracket, checking that the 10.2 mm pivot bolt passes smoothly. Align the 80.0 mm pulley with crankshaft and water pump pulleys to avoid belt twist. Set the 9.7 mm V-belt tension to permit roughly 10-15 mm of deflection along the longest free belt span. Firmly push the multi-pin connector plug into the socket, verifying that the female terminals in the vehicle harness are clean, tight, and free of dirt or oxidation.