MAHLE 14 V / 65 A Heavy-Duty Dustproof Alternator with Ø 68 mm Pulley for Antonio Carraro, Case IH, Deutz-Fahr & John Deere Tractors - Part Number: 379IA0499

The MAHLE high-performance heavy-duty alternator (part number 379IA0499, OEM cross-references AGN90339, MG 604, F032112098, 112098, AGN903409, 84535280, 01178521) is an OEM-grade 14 V / 65 A electrical generator engineered to ensure rapid, dependable battery charging and electrical grid stability on agricultural machinery operating under rigorous field conditions. Featuring a certified dustproof enclosed housing, it shields internal carbon brushes, slip rings, and bearings from airborne soil, abrasive dust, crop chaff, and moisture. Equipped with an integrated single-groove Ø 68.0 mm pulley for 9.7 mm V-belts, form B mounting flange (56.0 / 8.2 / 86.0 mm), and clockwise rotation, it provides drop-in mechanical and electrical interchangeability across widespread tractor fleets from Antonio Carraro (300, 400, 500, 600, 700, 9000, 9800 series), Case IH (B, C, D-Familie, CS, Compact series with D and DT diesel engines), Deutz-Fahr (05, 06, 07, DX, AgroPrima, AgroStar, AgroXtra, Intrac series), and John Deere (20, 30, 40, 50, and 900 combine series).

Key Features & Engineering Advantages

• Special Dustproof Housing Construction: Fully sealed internal chamber protects sensitive electronic regulators, diodes, and copper slip rings against aggressive airborne dirt, minimizing brush wear and field breakdowns.
• Integrated Solid-State Voltage Regulator: Delivers steady 14 V / 65 A output with active thermal compensation, safeguarding vehicle wiring harnesses and powering heavy auxiliary field lighting packages.
• Machined Ø 68.0 mm Single V-Belt Pulley: Accurately balanced for 9.7 mm profile drive belts, ensuring optimum pulley drive ratio and belt grip without slipping or squealing at elevated engine RPM.
• Form B Robust Flange Geometry: 56.0 mm mounting foot with 8.2 mm mounting bore (86.0 mm radius) ensures rigid, vibration-resistant alignment with engine bracketry.
• Extensive Multi-Brand Cross-Compatibility: Direct OE equivalent replacement for Antonio Carraro, Case IH, Deutz-Fahr, John Deere, and historic Bosch units (0986031270, 0986038050, 0986039800).

Technical Specifications & Dimensions

Equipment Compatibility & Tractor Application Guide

Manufacturer	Tractor Series / Specific OEM Part Numbers	Supported Tractor Models & Engines
Antonio Carraro	Compact, Isodiametric & Crawler Series	300, 352, 354, 400, 452, 454, 455, 455 CS, 500, 502, 504, 505, 505 CL, 552, 554, 555, 555 CL, 600, 652, 654, 655, 655 CL, 700, 702, 704, 9000, 9800
Case IH	Case IH Engines (84535280, 3218544R91, 1532068C2, 130100090744, 130100090739, 1532068C1, 3138942R91, 3144924R91, 3218239R91)	D-155, D-179, D-239, D-246, D-268, D-310, DT-239, DT-358, DT-402
	20, 30 & B-Familie Series	321, 431 • 644, 743, 743 XL, 744, 745 S, 745 XL, 844, 844 S, 844 XL, 845, 845 XL, 856 XL
	C-Familie & D-Familie Series	946, 955, 955 XL, 956, 956 XL, 1046, 1055, 1055 XL, 1056, 1056 XL • 1246, 1255, 1255 XL, 1455, 1455 XL
	Compact Series	C 55, C 64
	CS Series	CS 68 (6/97-3/99), CS 75 (6/97-3/99 & 3/99-3/04), CS 78 (3/96-1/99), CS 86 (3/96-1/99), CS 94 (3/96-1/99)
Deutz-Fahr	D, 05, 06 Series (01178521, 01171638, 01163752, 120489710, 120489711, Bosch 0986031270, 0986038050, 0986039800)	D 25, D 30, D 40, D 50, D 80 • D 2505 through D 9005 • D 2506, D 3006, D 4006, D 4506, D 5006, D 5206, D 5506, D 6006, D 6206, D 6806, D 7006, D 7206, D 7506, D 8006, D 9006, D 10006, D 13006
	07 & 07C Series	D 2807, D 3607, D 4007, D 4507, D 4807, D 5207, D 6007, D 6207, D 6507, D 6807, D 6907, D 7007, D 7207 • Cab C Versions: D 4507C through D 7807C
	DX, DX 3, DX 4, DX 6 Series	DX 80, 85, 86, 90, 92, 110, 120 • DX 3.10 through DX 3.90 • DX 4.10 through DX 4.70 • DX 6.05, DX 6.10, DX 6.30
	AgroCompact & AgroPrima Series	AgroCompact 3.30, 3.50, 3.70, 3.90 • AgroPrima 4.31, 4.51, 4.56, 6.06, 6.16
	AgroStar, Agrosun, AgroXtra Series	AgroStar 4.61 through 6.31 • Agrosun 100, 120, 140 • AgroXtra 3.57, 4.07, 4.17, 4.47, 4.57, 6.07, 6.17
	Farmliner & Intrac Series	Farmliner 3370 • Intrac 2002, Intrac 2003, Intrac 2004
	M Series Combine Harvesters	M 600, M 660, M 750, M 770, M 900, M 922, M 980, M 1000, M 1002, M 1080, M 1102, M 2385
John Deere	20 Series	920, 1120, 2020, 2120, 3120
	30 Series	930, 1030, 1130, 1630, 1830, 2030, 2130, 3130
	40 Series	840, 940, 1040, 1140, 1640, 1840, 2040, 2040S, 2140, 3040, 3640
	50 Series	1350, 1550, 1750, 1850, 1950, 2250, 2450, 2650, 2850, 3050, 3350
	900 Series Combine Harvesters	925, 932, 935, 942, 945, 952, 955, 965, 975

Installation Advice & Workshop Notes: Always disconnect the battery ground cable before removing the old alternator to eliminate any short-circuit hazards. Clean the engine mounting bracket thoroughly, ensuring the 56.0 mm mounting foot sits perfectly flat to maintain proper V-belt alignment. Loosen the tension arm, secure the new MAHLE alternator using the 8.2 mm mounting bore, and torque fasteners to manufacturer specifications. Fit the 9.7 mm V-belt and adjust tension to allow approximately 10–15 mm of deflection at mid-span under thumb pressure. Reconnect the B+ battery terminal and D+ charge indicator lead, reconnect the battery, and use a digital multimeter to confirm that regulated charging voltage at the battery terminals reads between 13.8 V and 14.4 V with the engine running at fast idle.