A4391 24V 130A Alternator Fits Scania P450, Scania P500, Scania R450

Description

A4391 Replacement Alternator

Choose a replacement by comparing the A4391 alternator and its Lucas reference, LRA04391, with your existing unit. The listed electrical rating is 24V 130A. An alternator maintains battery charge and supplies electrical power while the engine runs. Applications include selected Scania P450 12.7 Diesel variants.

Key Features and Benefits

• 24V electrical system: match the vehicle voltage before selecting a unit.
• 130A output: compare the listed rating with the original alternator.
• 10-groove pulley: check belt profile and alignment against the existing unit.
• 4 mounting holes: compare the fixing pattern and unit position.
• M8 B+ terminal: check the connection against the original unit.

Compatible Vehicles and Applications

• Scania P450 12.7 Diesel – selected applications 2017 – (engine code DC13143/DC13147/DC13148/DC13164).
• Scania P500 12.7 Diesel – selected applications 2017 – (engine code DC13146/DC13155/DC13165/DC13174).
• Scania R450 12.7 Diesel – selected applications 2016 – (engine code DC13143/DC13147/DC13148/DC13164).
• Scania R500 12.7 Diesel – selected applications 2016 – (engine code DC13146/DC13155/DC13165/DC13174).
• Scania R520 16.4 Diesel – selected applications 2016 – (engine code DC16101/DC16105/DC16114/DC16116).
• Scania R580 16.4 Diesel – selected applications 2016 – (engine code DC16102/DC16106/DC16117).

These are selected applications, not the complete fitment list. Check the detailed vehicle compatibility table, engine code and production year, then compare the original unit before ordering.

OE Numbers and Cross-Reference Information

The following cross-reference numbers are associated with A4391. Compare them with the original unit and technical specifications; a number match alone does not establish vehicle compatibility.

LRA04391, LRA4391, A004TR6791, A004TR6791AM, A004TR6791AT, A004TR6791ZT, A004TRG891, A004TRG891AM, A4TR6791, A4TR6791AM, A4TR6791AT, A4TR6791ZT, A4TRG891, A4TRG891AM, 861400

The full manufacturer cross-reference and OE listings are available elsewhere on this page. Confirm whether a number is an OE or aftermarket reference when comparing the original unit.

When Should You Replace Your Alternator?

Charging warning lights, repeated loss of battery charge, dim or fluctuating lights and inconsistent electrical operation can indicate a charging-system problem. Battery condition, wiring and the drive belt can produce similar symptoms; arrange a diagnostic check before replacing the alternator.

Why Buy from Sahibs Auto Electrics?

Sahibs Auto Electrics is a UK automotive electrical parts specialist supplying alternators and starter motors. Ask for help identifying A4391 using the existing part number and vehicle details. Check the current condition options and availability before purchase. Buy online for UK delivery or Click & Collect, checking the current order arrangements.

Frequently Asked Questions

Will A4391 fit my Scania P450?

Scania P450 12.7 Diesel (2017 -) is a listed application. Confirm the engine code and original unit configuration in the detailed fitment table.

Does A4391 replace Lucas LRA04391?

Lucas LRA04391 is a listed identification reference. Compare it with the original unit and specifications; a cross-reference does not guarantee compatibility by itself.

What specifications are listed for A4391?

The listed details include 24V, 130A output, 10 pulley grooves. Compare the complete specifications on this page with the unit being replaced.

Is A4391 new or remanufactured?

Check the current product condition selection for A4391. Confirm the supplier and availability of the option you want before completing the order.

What should I compare before ordering A4391?

Compare 24V compatibility, 130A output, pulley configuration, mounting points and electrical connections with the original alternator.

Does a battery warning light prove the alternator has failed?

No. Battery, belt, wiring and control faults can also affect charging. Use a charging-system test to establish the cause before ordering a replacement.