New 24V 100A Alternator Compatible With Perkins Industrial Engines 11.203.502 11.203.694 11.203.702

ALTERNATOR 24V 100 AMP CW IR/IF NO PULLEY — LETRIKA IA 1133 PERKINS STEYR MOTORS:

5 CHECKS BEFORE YOU BUY:
• Pulley: NONE is fitted — you transfer your own
• Shaft: 17mm bare spindle at the drive end
• Fan: INTERNAL — nothing turns outside the case
• Output: 100 Amp at 24 Volt nominal
• Letrika sales number: IA 1133 or Mahle MG 142

PERKINS ENGINE APPLICATIONS:
• Perkins industrial diesel engines under 2871A902
• Perkins agricultural diesel engines under 2871A903
• Perkins group engines under Caterpillar 378-9640
• Perkins engines wired for a 28 Volt charging system
• Any Perkins installation already carrying IA 1133

STEYR MOTORS APPLICATIONS:
• Steyr Motors diesel engines under 2205660-0
• Steyr Motors marine engine installations at 28 Volt
• Steyr Motors light diesel installations at 100 Amp

CLAAS AND COMPACTOR APPLICATIONS:
• CLAAS machines catalogued under 05011080
• Barber Greene BG8820 soil compactor
• Caterpillar CS66B soil compactor

ENGINE GATE — READ THIS FIRST:
• Pulley required: yours transfers onto a 17mm shaft
• Fan required: INTERNAL — the AAN compact build
• Output required: 24 Volt nominal at 100 Amp
• A 28 Volt plate is correct — that is the regulated output
• Confirm IA 1133 or MG 142 on the paperwork

OEM PART NUMBERS:
• Letrika Sales Number: IA 1133
• Mahle: MG 142
• Letrika Earlier Builds: 11.203.102 • 11.203.502 • 11.203.694 • 11.203.702
• Letrika Later Builds: 11.204.244 • 11.204.255 • 11.204.258 • 11.204.337
• Letrika Technical Earlier: AAN5124 • AAN5546 • AAN5595 • AAN5597
• Letrika Technical Later: AAN8156 • AAN8167 • AAN8170 • AAN5806
• Perkins: 2871A902 • 2871A903
• Caterpillar and Perkins Group: 3789640 / 378-9640
• Steyr Motors: 2205660-0
• CLAAS: 05011080

PART NUMBER CHAIN:
• 11.203.102 / AAN5124 — earliest catalogued build
• 11.203.502 / AAN5546 — superseded into the current number
• 11.203.694 / AAN5595 — superseded into the current number
• 11.203.702 / AAN5597 — the correct pairing for this number
• 11.204.244 / AAN8156 — later production build
• 11.204.255 / AAN8167 — later production build
• 11.204.258 / AAN8170 — later production build
• 11.204.337 / AAN5806 — later production build
• IA 1133 — the one current sales number across all eight

SPECIFICATIONS:
• 24 Volt / 100 Amp / Clockwise (CW) Rotation
• Regulated Output: 28 Volt at the Terminal
• Design: IR/IF — Internal Regulator with Internal Fan
• Build: Letrika AAN Compact — Dust-Proof Housing
• Pulley: NOT FITTED — Bare 17mm Spindle Shaft
• B Plus Terminal: M8-1.25 Stud
• Housing: Compact Frame with a Sealed Slip Ring Compartment
• Weight: 7.55 kg
• Polarity: Negative Ground
• Condition: New Aftermarket

HOW TO VERIFY FIT:
• Confirm no pulley is fitted when it arrives
• Measure a 17mm shaft at the drive end
• Confirm 100 Amp and 24 Volt nominal on the plate
• Confirm the fan sits inside the case
• Confirm an M8-1.25 stud at the B plus terminal
• Weigh the unit — this build runs about 7.55 kg

WHAT THIS UNIT IS:
• Output: 24 Volt nominal 100 Amp clockwise
• Regulator internal and fan internal
• Frame: Letrika AAN compact dust-proof housing
• Shaft: bare 17mm spindle with no pulley fitted
• Current sales number IA 1133 and Mahle number MG 142