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STG50177 Starter Motor 50856996T 5086976 50-856996T 50-86976 Replacement for Mercury Marine Mariner Outboard Engine 150-225HP

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PRODUCT DETAILS

STG50177 Starter Motor 50-856996T 50-86976 Replacement for Mercury Marine Mariner Outboard 115HP 135HP 150HP 200HP 225HP 12V

Part Numbers

Brand	Part Number
Mercury Marine	50-856996T
Mercury Marine	50-86976
Arrowhead	SAB0081, 410-21061
API Marine	MOT3009
ARCO Marine	5381X
EMP Parts	4-5609
J&N	410-21061
Lester	5398, 5902
Sierra Marine	18-5609
United Tech	10013040-M030SM, 4838740-M030SM, SM18059, SM48387
WAI	2-3146-UT, 5398N

Product Specifications

Item	Specification
Product Type	Starter Motor
Model	STG50177
Voltage	12 Volt
Rotation Direction	CCW (Counter Clockwise)
Teeth Count	9 Teeth
Starter Type	PMDD (Permanent Magnet Direct Drive)
Unit Type	Starter
Condition	Aftermarket Part
Unit Weight	4.3 KG

Replacement Information

STG50177 Starter Motor is a high-quality aftermarket replacement designed for Mercury Marine and Mariner outboard engines.

It replaces Mercury Marine OEM numbers 50-856996T and 50-86976, as well as aftermarket references from Arrowhead, Lester, Sierra Marine, WAI and other brands.

Product Features

Feature	Description
Marine Grade Design	Designed for reliable starting performance in marine outboard environments
Compact PMDD Structure	Permanent magnet direct drive design provides efficient operation and reduced weight
Direct Replacement	Manufactured to match OEM specifications for easy installation and dependable service

Applications

Mariner Outboard Engines

115L Optimax / 115XL Optimax Saltwater
135CXL DFI / Optimax
135L DFI / Optimax
135XL DFI / Optimax
150CXL DFI / Optimax
150L DFI / Optimax
150XL DFI / Optimax
200L / 200XL / 200XXL Optimax
200CXL / 200CXXL DFI / Optimax
225L / 225XL / 225XXL DFI / Optimax

Mercury Marine Outboard Engines

Compatible with:

115HP Optimax Series
135HP Optimax Series
150HP Optimax Series
200HP EFI / Optimax Series
225HP EFI / Optimax Series
250HP Saltwater EFI Series

Keywords

Mercury Marine 50-856996T Starter Motor, Mariner Outboard Starter Replacement, 12V PMDD Marine Starter Motor

PRODUCT HIGHLIGHTS
SHIPPING

Item Details

Processing Time Orders are processed within 1-3 business days after payment confirmation

Shipping Methods DHL/UPS/ FedEx/ TNT/ Air Freight/ Sea Freight

Estimated Delivery Time Express shipping: 3-7 business days, depending on destination

Packaging Export-standard cartons with protective inner packing

Tracking Tracking number will be provided once the order is shipped

Shipping Cost Calculated based on weight, dimensions, and destination

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WARRANTY POLICY

All new aftermarket parts come with a 1-Year warranty. Quality is the first thing we consider. Check out our Warranty Assistance for more details.

SHIPPING POLICY

We offer express and standard shipping options to ensure your off-road machine gets back in action—fast and reliably. For more details, please visit our Shipping Policy .

EASY RETURN POLICY

We prioritize your satisfaction. If your order doesn't meet your expectations within 90 days, you may be eligible for a refund. See our Easy Return Policy for details.

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