21048164 Alternator | Genuine Volvo Penta Part

🔧 Product Description

Brand-new genuine Volvo Penta alternator for use in the Volvo Penta 24-volt charging system. It converts belt-driven mechanical energy into regulated electrical output to recharge the battery bank and supply the engine or equipment electrical loads. Rated at 24 volts and 55 amps. Pulley, regulator arrangement and mounting configuration must match the installed alternator.

⚙️ Key Features

• 24V, 55A charging output
• Genuine Volvo Penta charging unit
• Matched voltage and current rating
• Factory-compatible mounting and terminal layout
• Regulated output for the original electrical system
• Confirm pulley and mounting hardware inclusion before installation
• Engine type: Volvo Penta marine or industrial diesel

🔌 Function

Produces regulated direct-current electrical power while the engine runs, maintaining battery charge and system voltage.

⚠️ Common Signs of Failure

• Battery or charge warning remains active
• Low, intermittent or excessive charging voltage
• Battery repeatedly discharges during operation
• Bearing noise, pulley wobble or belt dust
• Hot, loose or discoloured output and ground connections

🛠️ Service Notes

• Isolate the batteries before you start, and never disconnect the alternator or battery cables with the engine running — that will destroy the diodes
• Reconnect exactly as it came off, correct polarity, terminals clean and tight, and check the earth path through the mountings and engine is sound
• Check the pulleys line up and the belt runs true; renew a glazed, cracked or oil-contaminated belt at the same time and tension it by the procedure in the manual for your engine
• Support the alternator while you fit and tighten the mounting and adjusting bolts to the manual's figures, and never lever against the alternator body or end covers
• After fitting, confirm the charge warning goes out and charging voltage is correct, and recheck belt tension after the first running period

🔄 Supersession & Cross Reference

OEM Supersession Chain

• 21048164 → Supersedes 1624089 → Supersedes 1578140

OEM / Related Numbers

• 3803320 earlier number superseded by this part
• 1624089 earlier number superseded by this part
• 873771 related reference
• 3803572 related reference
• 85000221 related reference
• 11063163 related reference
• 8113911 related reference
• 8113909 related reference
• 85013112 related reference

Other-Brand OEM Numbers

• VOE21048164
• Valeo: 436438
• Valeo: 180620
• Mahle: MG 444
• Bosch: 0120469014
• Lucas: LRA00972
• Hella: 8EL 015 643-421

Aftermarket / Verified Equivalents

• AS-PL: A3060
• Fispa: A24BH0076A2
• DT Spare Parts: 2.21031
• Meat & Doria: 5610063
• Sampa: 038.046
• AS-PL: A3061
• AS-PL: A0100
• Hoffer: H5610063
• Febi Bilstein: 48936
• Remy: 19070059

📦 Condition

• Genuine Volvo Penta part
• Brand new
• Supplied in original or equivalent packaging