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OEM Mercury Water Separating Fuel Filter
Mercury Fuel Filter 8M0166596 For 450R, 500R V8 & 500-600HP V12
The Mercury 8M0166596 fuel filter is an OEM Mercury water separating fuel filter used on select high-performance Mercury Racing V8 and large-displacement Mercury V12 outboards.
This filter fits Mercury Racing 450R and 500R V8 FourStroke outboards, along with Mercury 500HP-600HP V12 FourStroke outboards. It helps remove water and contaminants from the fuel system during scheduled maintenance.
Compatible Applications
| Brand / Family | Horsepower | Engine Platform | Application |
|---|---|---|---|
| Mercury Racing | 450R, 500R | V8 FourStroke | Water separating fuel filter |
| Mercury Verado / SeaPro | 500HP-600HP | V12 FourStroke | Water separating fuel filter |
This Mercury 8M0166596 fuel filter is for select Mercury Racing 450R and 500R V8 outboards and Mercury 500HP-600HP V12 outboards.
Always verify your engine model, serial number, and current filter number before ordering fuel system parts.
Part Numbers & Cross References
| Brand / Source | Part Number |
|---|---|
| Mercury Marine | 8M0166596 |
| Related Water-In-Fuel Sensor | 8M0157779 |
Related Fuel Sensor
Water-In-Fuel Sensor
Mercury 8M0157779 water-in-fuel sensor used with the 8M0166596 fuel filter assembly on compatible applications.
View ProductWhat This Fuel Filter is Used For
The Mercury 8M0166596 fuel filter is used to help remove water and contaminants from the fuel supply before fuel reaches sensitive engine components.
Clean fuel is especially important on high-performance Mercury Racing V8 and Mercury V12 outboards. Replacing the fuel filter during scheduled maintenance helps support fuel system reliability and engine performance.
Key Features and Benefits
- OEM Mercury water separating fuel filter
- Fits Mercury Racing 450R V8 outboards
- Fits Mercury Racing 500R V8 outboards
- Fits Mercury 500HP-600HP V12 FourStroke outboards
- Helps separate water from the fuel system
- Helps trap fuel contaminants before they reach the engine
- Used during scheduled fuel system maintenance
- Pairs with Mercury 8M0157779 water-in-fuel sensor
Part Details
- Part Number: 8M0166596
- Product Type: Water Separating Fuel Filter
- Brand: Mercury Marine
- Application: Mercury Racing V8 and Mercury V12 Outboards
- Common Fitment: 450R, 500R, 500HP V12, 600HP V12
- Related Sensor: 8M0157779 Water-In-Fuel Sensor
- OEM Mercury Part: Yes
FAQ
What engines does Mercury fuel filter 8M0166596 fit?
This filter fits select Mercury Racing 450R and 500R V8 outboards, along
with Mercury 500HP-600HP V12 FourStroke outboards.
Does this fit the Mercury 500R?
Yes. Mercury 8M0166596 is used on Mercury Racing 500R V8 applications.
Does this fit Mercury V12 outboards?
Yes. This filter is used on compatible Mercury 500HP-600HP V12 outboards.
What sensor goes with this fuel filter?
The related water-in-fuel sensor is Mercury part number 8M0157779, linked above.
Is this a genuine Mercury fuel filter?
Yes. This is an OEM Mercury Marine fuel filter.
When should I replace this fuel filter?
Replace the fuel filter during scheduled maintenance or any time fuel
contamination or water-in-fuel concerns are found.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 continental U.S.
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1-5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Fuel filters must be new, unused, and in original packaging.
- Installed or fuel-contaminated filters are not returnable.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Terms
8M0166596, Mercury 8M0166596, Mercury fuel filter, Mercury water separating fuel filter, Mercury 450R fuel filter, Mercury 500R fuel filter, Mercury Racing fuel filter, Mercury V8 fuel filter, Mercury V12 fuel filter, Mercury 500HP V12 fuel filter, Mercury 600HP V12 fuel filter, Mercury Verado V12 fuel filter, Mercury SeaPro V12 fuel filter, Mercury 500R water separator, Mercury 450R water separator, Mercury water in fuel sensor, 8M0157779, Mercury fuel system maintenance, Mercury outboard fuel filter
8M0235013
32437A1
32437A3
37433A1
42579A4
44292A4
48747A3
57234A1
57234A3
57234B1
58618A4
60367A1
60367A4
64141A11
69222A3
73802A3
73804A3
78400A2
96148A5
96148A8
96148B5
96148B8
Mercury Racing 2 Stroke Oil 8M0078011
The Mercury Racing 2 Stroke Oil 8M0078011 is a high-performance synthetic blend 2-stroke marine engine oil designed for demanding racing and high-output applications. Sold in a 1 gallon container, this formula is built to protect against heat, wear, and carbon buildup while helping two-stroke engines run clean and strong.
Product Overview
This oil is made for high-performance 2-stroke engines where extra protection matters. Mercury Racing describes it as a low-smoke, ashless formula designed to maximize horsepower while helping reduce deposits and wear in extreme operating conditions. It is recommended for use in oil-injected or premix applications.
Applications
| Application Type | Use |
|---|---|
| Marine Racing Engines | High performance 2-stroke outboard and marine racing applications |
| Premix Systems | Can be used in premix applications where racing 2-stroke oil is required |
| Oil Injection Systems | Can be used in compatible oil-injected 2-stroke engines |
| Other High Performance 2-Stroke Engines | Also recommended by Mercury Racing for certain air- or liquid-cooled 2-stroke powersports applications |
Product Features
- Synthetic blend high performance 2-stroke formula
- Low-smoke, ashless chemistry
- Helps protect against heat and wear
- Helps reduce carbon buildup and deposit formation
- Supports strong performance in high-load racing conditions
- Works in premix or oil-injected applications
Specifications and Standards
| Specification | Details |
|---|---|
| Part Number | 8M0078011 |
| Alternate OEM Format | 92-8M0078011 |
| Container Size | 1 Gallon |
| Formula Type | Synthetic Blend 2-Stroke Oil |
| Standards | TC-W3, JASO FD, ISO EGD |
What This Oil Is Used For
This oil is used to lubricate and protect high-performance 2-stroke engines operating under heavy load and high temperature conditions. It is a strong choice for customers running performance-oriented marine engines that need clean burn characteristics, reduced deposits, and dependable protection at high RPM. Mercury Racing states that the formula is intended to help maximize horsepower while controlling carbon buildup and wear.
FAQ
Is 8M0078011 a premix oil?
Yes. Mercury Racing says this oil can be used in premix applications as well as compatible oil-injected systems.
What type of oil is this?
It is a synthetic blend high performance 2-stroke marine engine oil made for racing and high-output 2-stroke applications.
What certifications does it meet?
Mercury Racing states that this oil exceeds TC-W3, JASO FD, and ISO EGD standards.
What size container is this?
This part number is sold as a 1 gallon container.
Dealer Discounts & Store Policies
Dealer / Marine Industry Discounts
Are you a marine dealer, technician, boat builder, or industry professional? We offer dealer pricing for qualified marine businesses.
Shipping Policy
- Free shipping on orders over $100 (continental U.S.).
- Orders ship via UPS, USPS, and FedEx.
- Orders received before 5:30 PM EST ship the same business day.
- Typical delivery time is 1–5 business days.
30-Day Return Policy
- Returns accepted within 30 days of delivery.
- Items must be new, unused, and in original packaging.
- Return authorization is required before sending items back.
Need help with a return or order question?
Contact Us
Phone: 941-721-3000
Searchable Part Numbers
8M0078011, 92-8M0078011, Mercury Racing 2 Stroke Oil, Mercury synthetic blend racing oil, Quicksilver racing 2 stroke oil, 1 gallon 2 stroke racing oil
813743A2
858085K01
858101Q01
858102Q01
99493A2
0775467
43026B2
43026Q02
43026T 2
43026T2
430261
430262
430264
8M0025709
All Models that use Mercury Power Steering
Verado L4 L6 V6 V8 V10
892365A01
857186T02