A1248 12V 55A Alternator Fits Yanmar Marine 2GM20, Yanmar Marine 4JM
Price range: £100.44 through £128.77
Sahibs A1248 is a replacement alternator with a listed 12V 55A rating. Listed applications include selected Yanmar Marine 2GM20, Yanmar Marine 2GM20-F, Yanmar Marine 3GM30, Yanmar Marine 3GM30-F models. Identification references include Lucas LRA01248, Hitachi HAL15520B, Prestolite 20115006TBA. Its listed 12V 55A rating provides an electrical matching point for your existing unit. Check the single-groove pulley, connections and mounting arrangement. Check the current condition options and availability before purchase. Match the exact engine and production details before ordering. Buy your A1248 replacement alternator online from Sahibs Auto Electrics for UK delivery or Click & Collect.
Product Specification
| Description | Value |
|---|---|
| AMP | 55 A |
| Volt | 12 V |
| No. of Grooves | 1 qty |
| Pulley Diameter | 48 mm |
| Mounting holes | 3 qty |
| Position | 0° |
| B+ | M5 |
| Insulated Return | Yes |
| Water cooled | No |
| Vacuum pump | No |
| Start/Stop | No |
| Weight | 4.55 Kg |
Cross Reference
| Reference Number | Brand |
|---|---|
| DYA1248 | Dyno Electrics |
| 401745321 | Euro Car Part |
| UD19393A | AS-PL |
| 113793 | CARGO |
| F032113793 | CARGO |
| 8EL737061-001 | HELLA |
| HAL15520B | HITACHI |
| LR155-20 | HITACHI |
| LR155-20B | HITACHI |
| LR155-29 | HITACHI |
| 20115006TBA | PRESTOLITE |
| 129772-77200 | YANMAR |
| CGB-80917 | AINDE |
| CAL20161AS | CASCO |
| CAL20161RS | CASCO |
| A-8519 | DIXIE |
| 75919 | EAI |
| 28-0917 | ELSTOCK |
| JA986IR | HC PARTS |
| ALH3793 | KRAUF |
| 553903RI | KUHNER |
| 446035 | LOGISTIK |
| LRA01248 | LUCAS |
| LRA1248 | LUCAS |
| 5520943 | MEAT & DORIA |
| 985.003.055.080 | PSH |
| 985.003.055.265 | PSH |
| 985.003.055.780 | PSH |
| 20145161BN | REAL |
| 20145161RC | REAL |
| 204-10121 | ROBERT'S |
| 2020161 | SANDO |
| 2020161.2 | SANDO |
| A12HT1123A2 | SIDAT |
| 12107N | WAI / TRANSPO |
| 90-25-1092 | WILSON |
| 90-25-1092N | WILSON |
| ALT32040 | WOODAUTO |
Alternative Parts
| Alternative Part | Current Description | Alternative Description | Direct Alternative |
|---|---|---|---|
| A4201 | 55A Pulley 1 groove OD74 | 80A Pulley 2 grooves OD74 | No |
| A1632 | 55A Pulley OD74 | 80A Pulley OD70 | No |
Vehicle Applications
| Brand | Model | Engine | Engine Code | Series | Model Type | Type | Year |
|---|---|---|---|---|---|---|---|
| YANMAR MARINE | 2GM20 | 0ccm Diesel | 1984 - | ||||
| YANMAR MARINE | 2GM20-F | 0ccm Diesel | 1984 - | ||||
| YANMAR MARINE | 3GM30 | 0ccm Diesel | 1984 - | ||||
| YANMAR MARINE | 3GM30-F | 0ccm Diesel | 1984 - | ||||
| YANMAR MARINE | 3JH2-TE | 0ccm Diesel | 1991 - 1999 | ||||
| YANMAR MARINE | 3JH3-BE | 0ccm Diesel | |||||
| YANMAR MARINE | 3JH3-E | 0ccm Diesel | |||||
| YANMAR MARINE | 4JH2-DTBE | 0ccm Diesel | |||||
| YANMAR MARINE | 4JH2-DTE | 0ccm Diesel | |||||
| YANMAR MARINE | 4JH2-E | 0ccm Diesel | |||||
| YANMAR MARINE | 4JH2-HTE | 0ccm Diesel | |||||
| YANMAR MARINE | 4JH2M-E | Diesel | |||||
| YANMAR MARINE | 4JH2-TE | 0ccm Diesel | |||||
| YANMAR MARINE | 4JH2-UTE | 0ccm Diesel | |||||
| YANMAR MARINE | 4JH3-E | 1995ccm Diesel | |||||
| YANMAR MARINE | 4JH-4C | 2190ccm Diesel | 2005 - | ||||
| YANMAR MARINE | 4JH-DTBE | 0ccm Diesel | |||||
| YANMAR MARINE | 4JH-DTE | 0ccm Diesel | 1983 - 1989 | ||||
| YANMAR MARINE | 4JH-DTXE | 0ccm Diesel | |||||
| YANMAR MARINE | 4JH-E | 0ccm Diesel | 1983 - 1989 | ||||
| YANMAR MARINE | 4JH-HTE | 0ccm Diesel | 1983 - 1989 | ||||
| YANMAR MARINE | 4JH-HTXE | 0ccm Diesel | |||||
| YANMAR MARINE | 4JH-TE | 0ccm Diesel | 1989 - | ||||
| YANMAR MARINE | 4JH-TXE | 0ccm Diesel | |||||
| YANMAR MARINE | 4JH-XE | 0ccm Diesel | |||||
| YANMAR MARINE | 4JM | 1490ccm Diesel | |||||
| YANMAR MARINE | 4JM-T | 1490ccm Diesel | |||||
| YANMAR MARINE | 4LH-DTE | 0ccm Diesel | 1989 - | ||||
| YANMAR MARINE | 4LH-HTE | 0ccm Diesel | 1989 - | ||||
| YANMAR MARINE | 4LH-TE | 0ccm Diesel | 1989 - |
Description
A1248 Replacement Alternator
The Sahibs A1248 alternator is associated with Lucas reference LRA01248 for replacement identification. The listed electrical rating is 12V 55A. An alternator maintains battery charge and supplies electrical power while the engine runs. Applications include selected Yanmar Marine 2GM20 variants.
Key Features and Benefits
- 12V electrical system: match the vehicle voltage before selecting a unit.
- 55A output: compare the listed rating with the original alternator.
- Single-groove pulley: check belt profile and alignment against the existing unit.
- 3 mounting holes: compare the fixing pattern and unit position.
- M5 B+ terminal: check the connection against the original unit.
Compatible Vehicles and Applications
- Yanmar Marine 2GM20 – selected applications 1984 -.
- Yanmar Marine 2GM20-F – selected applications 1984 -.
- Yanmar Marine 3GM30 – selected applications 1984 -.
- Yanmar Marine 3GM30-F – selected applications 1984 -.
- Yanmar Marine 3JH2-TE – selected applications 1991–1999.
- Yanmar Marine 3JH3-BE.
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 A1248. Compare them with the original unit and technical specifications; a number match alone does not establish vehicle compatibility.
LRA01248, LRA1248, HAL15520B, LR155-20, LR155-20B, LR155-29, 20115006TBA
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 A1248 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 A1248 fit my Yanmar Marine 2GM20?
Yanmar Marine 2GM20 (1984 -) is a listed application. Confirm the engine code and original unit configuration in the detailed fitment table.
Does A1248 replace Lucas LRA01248?
Lucas LRA01248 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 A1248?
The listed details include 12V, 55A output, 1 pulley groove. Compare the complete specifications on this page with the unit being replaced.
Is A1248 new or remanufactured?
Check the current product condition selection for A1248. Confirm the supplier and availability of the option you want before completing the order.
What should I compare before ordering A1248?
Compare 12V compatibility, 55A 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.
