- Outer Diameter
- 120 mm
- Current Strength from
- 50 A
- Number of diodes
- 8
In stock
Original equipment number
Alternator rectifier, OE 42531816. 2 compatible equivalents from 2 brands, 1 of them in stock. Prices from £26.99 to £30.99. Fits MERCEDES-BENZ.
MOBILETRON RB-93H£26.99
Manufacturers list each of these parts against OE 42531816. The cheapest ones in stock come first; the full list follows, sorted by price.
UK delivery £5.99, free over £50 · We also ship from the EU to 200 countries, with no customs charges within the EU — see prices and times
Your car
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In stock
1 in stock now, 1 not in stock right now. Sorted by price.
| Brand | Number | EAN | Features | Price | Availability |
|---|---|---|---|---|---|
| MOBILETRON | RB-93H | — | 120 mm · 50 A · 2 · 8 | £26.99 | In stock |
| Brand | Number | EAN | Features | Price | Availability |
|---|---|---|---|---|---|
| MEAT & DORIA | 52153 | 8033419177577 | 28 V · 132114 | £30.99 | Out of stock |
OE 42531816 is compatible with the following make/model combinations:
Choose a brand to see their compatible parts for OE 42531816.
OE part number 42531816 is a Alternator rectifier used by MERCEDES-BENZ. We have 2 compatible replacement parts from MOBILETRON, MEAT & DORIA.
Alternator rectifier OE 42531816 prices range from £26.99 to £30.99, with 2 brands offering compatible parts.
OE (Original Equipment) number 42531816 is a manufacturer's reference code for Alternator rectifier used to identify the exact specification of a part fitted during vehicle production. By cross-referencing this OE number, you can find 2 compatible aftermarket brands that match the same specification — often at a lower price than the original. All parts listed above are verified to match OE 42531816.
Original installation position for OE 42531816. The red ring marks where this part installs on the vehicle.

OEM workshop diagram — sourced from manufacturer parts catalogue.
| Attribute | Value |
|---|---|
| Alternator Charging Current [A] | 140 |
| Number of diodes | 3 |
| Bore Distance [mm] | 75 |
| Inner Diameter [mm] | 27,00 |
| Inner Diameter [mm] | 50,00 |
| Manufacturer Restriction | DIODE: 6x35A |
| Manufacturer Restriction | DIODE: 6x50A |
| Net Weight [g] | 2 |
| Outer Diameter [mm] | 102,0 |
| Outer Diameter [mm] | 102,00 |
Other original equipment numbers linked to 42531816. Each one leads to its own fitment and price page.
Only vehicle manufacturers' numbers are listed here. Other makers' equivalents are under “Compatible parts”.
Common original equipment numbers linked to replacement-part pages.
4–8 days
Standard delivery £5.99. Free on orders from £50.00.
£50.00
On every order from £50.00.
14 days
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OE 42531816 fits vehicles from MERCEDES-BENZ and other compatible models listed below.
OE 42531816 is an original equipment reference for a Alternator rectifier. It identifies the exact part specification used by the vehicle manufacturer.
Replacement parts for OE 42531816 cost between £26.99 and £30.99, depending on brand and specification.
MOBILETRON, MEAT & DORIA all offer compatible replacements for OE 42531816.
OE 42531816 is an original equipment reference assigned by the vehicle manufacturer. The parts listed below are quality-matched aftermarket and OEM-equivalent replacements that meet the same specification.