PRODUCT DETAILS
Voltage Regulator / Rectifier for Mercury & Mariner Outboards
High-quality marine-grade aftermarket 6-wire voltage regulator / rectifier for selected Mercury and Mariner outboard engines.
Suitable for a wide range of selected 2, 3, 4 and 6-cylinder Mercury / Mariner applications from 25 HP to 225 HP.
Replaces Mercury Part Numbers:
- 8M0084173
- 883072T
- 883072
- 815279T
- 815279-3
- 815279-5
- 830179T
- 830179-2
- 854515
- 856748
Mercury 883072T has been superseded to 8M0084173, although the later genuine replacement kit may look different from the original regulator.
Regulator Specification
6-Wire Series Type
Working Voltage: 12V DC
Terminal Identification:
- Grey – Tach
- Yellow – AC
- Red Female – Sense
- Red Male – B+
- Black – B- / Ground
- Yellow – AC
This six-wire terminal arrangement is documented for this regulator family.
Fits Selected Mercury / Mariner Outboards
25–40 HP – 2 Cylinder
Selected:
25 HP – 40 HP
2 Cylinder
Approx. 1995–2005
45–90 HP – 3 Cylinder
Selected:
45 HP – 90 HP
3 Cylinder
Approx. 1987–2007
Applications vary considerably by horsepower, charging system and year.
90–125 HP – 4 Cylinder
Selected:
90 HP – 125 HP
4 Cylinder
Approx. 1989–2006
150–225 HP – 6 Cylinder
Selected:
150 HP – 225 HP
6 Cylinder
Approx. 1992–2000
The above cylinder/year groupings match the application information published for this regulator family.
IMPORTANT
These are application ranges, not a guarantee that every engine within every horsepower and year uses this regulator.
Always check the engine serial number, charging system and original regulator part number.
Product Features
- Marine-grade aftermarket voltage regulator / rectifier
- 6-wire series type
- 12V electrical system
- Suitable for selected Mercury / Mariner outboards
- Applications across 2, 3, 4 and 6-cylinder engines
- Helps regulate charging-system voltage
- Provides rectification of charging-system AC output
- Replacement for numerous earlier Mercury regulator numbers
- Designed as a compatible replacement for the applicable original unit
Replaces / Cross References
Mercury / Mariner:
8M0084173
883072T
883072
815279
815279-1
815279-2
815279-3
815279-4
815279-5
815279T
815279T2
815279T3
815279T4
815279T5
817411
817411-1
830179
830179-2
830179T
854514
854514-1
854514T
854514T1
854515
854515-1
854515T1
856748
883071A1
CDI's cross-reference data supports this broader group of Mercury numbers for the 194-5279 regulator family.
Additional Cross References:
CDI 194-5279
Sierra 18-5743
Cross-reference catalogues also associate 18-5741, 18-5742 and 18-5744 with this regulator family.
⚠️ Important – Check Before Ordering
Do NOT order this regulator by horsepower or appearance alone.
Mercury and Mariner used different charging systems and voltage regulators on engines with the same or similar horsepower.
Before purchasing, please check:
- Engine horsepower
- Number of cylinders
- Engine year
- Engine serial number
- Original regulator part number
- Number of wires
- Electrical connectors
- Charging-system specification
Most importantly:
Compare the part number and wiring configuration with the regulator currently fitted to your engine.
If the regulator looks the same as yours, this does not always mean it is the correct one for your outboard.
If you are unsure, contact SSI Marine with your complete engine serial number and original regulator part number before purchasing.
Important – 8M0084173 Replacement
Mercury currently lists 8M0084173 as a replacement voltage regulator kit for various Mercury and Mariner 2-stroke outboards.
The genuine 8M0084173 kit includes a 30-amp mini-fuse block, wiring and installation hardware, so a current genuine Mercury 8M0084173 kit can look different from an older 883072T-style regulator.
This listing is for the aftermarket regulator shown in our photographs.
Please compare the regulator, wires, connectors and original part number before ordering.
Aftermarket Replacement Part
This is a high-quality marine-grade aftermarket replacement part.
It is not a genuine Mercury / Quicksilver component.
OEM manufacturer names and part numbers are used for identification and compatibility reference only.
The part is designed as a replacement for the applicable original regulator references listed above.
Buyer Responsibility
It is the buyer's responsibility to ensure this regulator is suitable for their particular outboard.
Electrical components can differ depending on engine generation, serial number and charging system.
If unsure, please contact SSI Marine before ordering.
Please provide:
- Engine make
- Horsepower
- Number of cylinders
- Engine serial number
- Original regulator part number
We will be happy to help check compatibility.
Why Buy From SSI Marine?
- Marine-grade aftermarket & OEM-spec parts
- Workshop-tested products
- More than 10 years supplying and working with outboard engines
- Same-day dispatch before 1 PM Monday–Friday
- Royal Mail Tracked 24
- UK stock
- Collection available from Leigh, Greater Manchester
- Technical support from experienced outboard specialists
- Workshop open Monday–Friday, 9 AM–5 PM
SHIPPING & DELIVERY
Delivery & Returns Policy
Delivery
Standard Delivery
- £6: Royal Mail Tracked 24 Service
- £3.99: Large Letter - Royal Mail 1st Class Post (Untracked)
We offer free delivery on all orders over £150 (excludes outboard engines).
Orders placed before 1:00 PM (Monday-Friday) are usually dispatched the same working day.
Most parcels are delivered within 24 hours, but please allow extra time for courier delays that may occur outside our control.
For outboard engines, please contact us for a delivery quote.
Important: Please ensure your shipping address is correct before completing checkout. SSI Marine is not responsible for parcels sent to an incorrect address provided by the buyer.
Tracking Your Order
Once your order has been dispatched, you will receive a tracking number via email (after 5 PM on the day of dispatch).
Tracking is available only for parcels sent via Royal Mail Tracked 24.
Large Letter orders are sent via Royal Mail 1st Class Post (untracked).
Returns
We accept returns of unused and undamaged items within 30 days of purchase.
Returned items must be in sellable condition and include the original packaging.
Please do not tape, label, or write directly on the product's original box.
Important: Do not return items in their original product boxes only, they must be placed inside a protective outer box or bag. Parcels returned like the example below will be subject to a 20% restocking fee.
Return shipping costs are the customer's responsibility.
Please include your order details and reason for return inside the parcel.
Refunds
Refunds are issued for the item purchase price only (shipping costs are non-refundable).
All refunds will be made using the same payment method as your original order.
Items returned in poor condition or without proper packaging may incur a 20% restocking fee.
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